1200 Main Jets

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1200 Main Jets

Triumph Trophy mailing list
Anyone know what size main jets you are running in your 1200? I have a 2001 1200 that has 115 size main jets and sooty plugs. I also have a problem with the enrichment jets that may well be contributing to the problem as well but just curious what others may be running. It would also be interesting to know the differences between the US and the UK etc.
 

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Re: 1200 Main Jets

Triumph Trophy mailing list
I'm running 120 mains with 2.5 turns on the enrichment jets on my 1995
Trophy 4 1200 here in Virginia.  Gets around 38 to 40 MPG and runs like a
scalded dog.  Plugs indicate a bit rich but does not create any issues.

--
Steve
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Re: 1200 Main Jets

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Thanks Stephen! That's the only response I've gotten so far but I did
find a link to some interesting reading;
http://www.mk1speedtriple.co.uk/triumph-hinkley-faq/
     I think your '95 has much different cams and stuff than my '01 but
appreciate the info. My plugs always read rich when the bike is running
well but I only get about 30 MPG here in flatland Florida! ;-)
Ed J.

On 5/1/2016 11:31 PM, Stephen Johnson [hidden email]
[TriumphTrophy] wrote:

>
>
> I'm running 120 mains with 2.5 turns on the enrichment jets on my 1995
> Trophy 4 1200 here in Virginia.  Gets around 38 to 40 MPG and runs
> like a scalded dog.  Plugs indicate a bit rich but does not create any
> issues.
>
> --
> Steve
>
>
>

--
Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200 321-795-4387


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Re: 1200 Main Jets

Triumph Trophy mailing list
Hi Ed,
Which plugs were sooty?  On mine, plugs 2 & 4, I think were sooty when I did a maintenance at 8K miles.  I lowered the needles by 1 notch on those, but I'm about to do my 18K maintenance and check those plugs again,  Lots of changes have happened in the meantime, including new coils, so I want to see what the difference is.
- Dave

 
      From: "Ed Johnson [hidden email] [TriumphTrophy]" <[hidden email]>
 To: [hidden email]
 Sent: Monday, May 2, 2016 9:14 AM
 Subject: Re: [TriumphTrophy] Re: 1200 Main Jets
   
     Thanks Stephen! That's the only response I've gotten so far but I did find a link to some interesting reading; http://www.mk1speedtriple.co.uk/triumph-hinkley-faq/ 
     I think your '95 has much different cams and stuff than my '01 but appreciate the info. My plugs always read rich when the bike is running well but I only get about 30 MPG here in flatland Florida! ;-)
 Ed J.
 
 On 5/1/2016 11:31 PM, Stephen Johnson [hidden email] [TriumphTrophy] wrote:
 
 I'm running 120 mains with 2.5 turns on the enrichment jets on my 1995 Trophy 4 1200 here in Virginia.  Gets around 38 to 40 MPG and runs like a scalded dog.  Plugs indicate a bit rich but does not create any issues.
 
  --
  Steve    
 
 --
 Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200 321-795-4387

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Re: 1200 Main Jets

Triumph Trophy mailing list
All  of them David but the enrichment jet was in the float bowl on #4
and loose on #2 which affects the effective size of the respecctive
corresponding main jet. Most people don't even know the enrichment jets
even exist. When I first got my bike all of mine were missing! I suspect
that someone in the past has blasted my present float assemblies with
high pressure compressed air. It will be interesting to see how it runs
with them all in place for the first time since I owned the bike.
Regards and thanks for your input. I would still be interested in what
size main jets are installed your bike as that is what all other carb
issues are based on!
Ed J.

On 5/2/2016 3:53 PM, David Webb [hidden email]
[TriumphTrophy] wrote:

>
>
> Hi Ed,
>
> Which plugs were sooty?  On mine, plugs 2 & 4, I think were sooty when
> I did a maintenance at 8K miles.  I lowered the needles by 1 notch on
> those, but I'm about to do my 18K maintenance and check those plugs
> again,  Lots of changes have happened in the meantime, including new
> coils, so I want to see what the difference is.
>
> - Dave
>
>
>     ------------------------------------------------------------------------
>     *From:* "Ed Johnson [hidden email] [TriumphTrophy]"
>     <[hidden email]>
>     *To:* [hidden email]
>     *Sent:* Monday, May 2, 2016 9:14 AM
>     *Subject:* Re: [TriumphTrophy] Re: 1200 Main Jets
>
>     Thanks Stephen! That's the only response I've gotten so far but I
>     did find a link to some interesting reading;
>     http://www.mk1speedtriple.co.uk/triumph-hinkley-faq/
>         I think your '95 has much different cams and stuff than my '01
>     but appreciate the info. My plugs always read rich when the bike
>     is running well but I only get about 30 MPG here in flatland
>     Florida! ;-)
>     Ed J.
>
>     On 5/1/2016 11:31 PM, Stephen Johnson [hidden email]
>     <mailto:[hidden email]> [TriumphTrophy] wrote:
>>     I'm running 120 mains with 2.5 turns on the enrichment jets on my
>>     1995 Trophy 4 1200 here in Virginia.  Gets around 38 to 40 MPG
>>     and runs like a scalded dog.  Plugs indicate a bit rich but does
>>     not create any issues.
>>
>>     --
>>     Steve
>
>     --
>     Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200 321-795-4387
>
>     <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon>
>     Virus-free. www.avast.com
>     <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link>
>
>
>
>
>
>
>

--
Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200 321-795-4387


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Re: 1200 Main Jets

Triumph Trophy mailing list
Hi Ed,
I'd guess that the enrichment jets would only affect the mixture when the enrichment circuit (choke) is engaged.  Am I thinking wrong on this?
I looked through the photos of my disassembled carbs on Photobucket and unfortunately, I took them all with the jets turned threads-up.  There are no numbers visible.
I found a good site that discusses how to read spark plugs that might help some...
The Ultimate Guide to Spark Plugs

|   |
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| The Ultimate Guide to Spark PlugsAutomotive Technical Information, Automotive News and More! |
|  |
| View on brianesser.com | Preview by Yahoo |
|  |
|   |


There is a good set of pictures of different types of plugs.  Other sites discuss where the timing mark appears on the plug, and the meaning of different patterns on the insulator, but these sites are more for tuners than for people who are using the manufacturer's recommendations.
- Dave
 
      From: "Ed Johnson [hidden email] [TriumphTrophy]" <[hidden email]>
 To: [hidden email]
 Sent: Monday, May 2, 2016 4:50 PM
 Subject: Re: [TriumphTrophy] Re: 1200 Main Jets
   
     All  of them David but the enrichment jet was in the float bowl on #4 and loose on #2 which affects the effective size of the respecctive corresponding main jet. Most people don't even know the enrichment jets even exist. When I first got my bike all of mine were missing! I suspect that someone in the past has blasted my present float assemblies with high pressure compressed air. It will be interesting to see how it runs with them all in place for the first time since I owned the bike.
 Regards and thanks for your input. I would still be interested in what size main jets are installed your bike as that is what all other carb issues are based on!
 Ed J.
 
 On 5/2/2016 3:53 PM, David Webb [hidden email] [TriumphTrophy] wrote:
 
  Hi Ed,
  Which plugs were sooty?  On mine, plugs 2 & 4, I think were sooty when I did a maintenance at 8K miles.  I lowered the needles by 1 notch on those, but I'm about to do my 18K maintenance and check those plugs again,  Lots of changes have happened in the meantime, including new coils, so I want to see what the difference is.
  - Dave
 
   
      From: "Ed Johnson [hidden email] [TriumphTrophy]" <[hidden email]>
 To: [hidden email]
 Sent: Monday, May 2, 2016 9:14 AM
 Subject: Re: [TriumphTrophy] Re: 1200 Main Jets
 
         Thanks Stephen! That's the only response I've gotten so far but I did find a link to some interesting reading; http://www.mk1speedtriple.co.uk/triumph-hinkley-faq/ 
     I think your '95 has much different cams and stuff than my '01 but appreciate the info. My plugs always read rich when the bike is running well but I only get about 30 MPG here in flatland Florida! ;-)
 Ed J.
 
   On 5/1/2016 11:31 PM, Stephen Johnson [hidden email] [TriumphTrophy] wrote:
 
 I'm running 120 mains with 2.5 turns on the enrichment jets on my 1995 Trophy 4 1200 here in Virginia.  Gets around 38 to 40 MPG and runs like a scalded dog.  Plugs indicate a bit rich but does not create any issues.
 
  --
  Steve  
 
 --
 Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200 321-795-4387
 
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 --
 Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200 321-795-4387

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Re: 1200 Main Jets [1 Attachment]

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Hi Dave! Thanks for the interest. In a perfect world I'm guessing that
you are correct in your thinking that the enrichment circuit would only
be in effect when it was engaged. [But look what I'm thinking with! :-[]
Providing that there is not a lot of wear in the circuit and when the
choke is closed it is truly closed. In my case however considering the
difference in size of the jet hole and the hole it came out of I can now
understand why others needed full choke in order to start their engines
and if I did that I had to change a couple of plugs if it didn't start
and 1/4 choke [Or None] was plenty on my bike.Unfortunately when I
rebuilt my carbs I used float assemblies from a lower mileage bike but
didn't insure that these jets were firmly in place. They are simply a
press fit but considering how firm the pressure I used to replace the
fallen one that should be adequate considering the flow is opposite of
the direction needed to dislodge them.My home compressor can only
accomplish about 119 PSI with a small tank so is not able to maintain
that pressure for very long and is no where near enough pressure to blow
these jets out. I can only assume someone with access to a "Shop
Quality" air supply could possible dislodge them depending also on what
kind of liquid cleaner was accompanying this pressure. My Dad always
said; " Make something Idiot Proof and God will simply make a better
Idiot!" I replaced my fallen one firmly in place and no amount of WD40/
Carb Cleaner/ Air pressure [as above] combined could dislodge it again
although I'm going to use a replacement but i like to experiment with
stuff like this! [Retirement has it's merits! 8-)]

     I haven't looked at your recommended site for reading plugs yet but
I can assure you I have had a long and extensive career in reading plugs
so am definitely "Old School" in that regard. Having said that the
problem I've had since the beginning with main jets on a Trophy's is
accessibility. In the old days [for me that was the late 50's and early
60's] We found a deserted highway somewhere, tucked ourselves in, and
proceeded down said highway with Wide Open Throttle. If at top speed
closing the throttle a minute amount caused an increase in speed we were
too lean. If not then we simply pulled the clutch while simultaneously
hitting the "kill button" and coasted to the side of the road and pulled
the plugs. [Being careful of course to put a rag over the plug hole to
avoid cold air access to the hot valves etc.] We could then read the
plug and adjust the main jet [s] accordingly. Once this process was
achieved satisfactorily we could then move on to further tuning
procedures like needle placement, slide cutaways, carb syncing, and
such. This process is pretty hard to beat as it takes into consideration
the wind load on the bike which even a DYNO can only estimate if
considered at all. I think this process would be almost impossible on
our Trophy's without considerable help and equipment.

     To get accurate results all the Tupperware would have to be in
place during every run. A traveling roadside workshop would be a
definite requirement [Air Conditioning a must for those of us in Florida
and other hot climates] A minor adjustment in jet size would be a very
time consuming exercise unless someone has a magical way of changing
main jets without pulling the carbs. I could go on and on [Like I
usually do :-[] but the attached document goes into great detail about
tuning our Trophy's and I will leave it at that!

Thanks again for your interest!

--
Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200 321-795-4387

On 5/3/2016 8:24 AM, David Webb [hidden email]
[TriumphTrophy] wrote:

>
>
> Hi Ed,
>
> I'd guess that the enrichment jets would only affect the mixture when
> the enrichment circuit (choke) is engaged.  Am I thinking wrong on this?
>
> I looked through the photos of my disassembled carbs on Photobucket
> and unfortunately, I took them all with the jets turned threads-up.
>  There are no numbers visible.
>
> I found a good site that discusses how to read spark plugs that might
> help some...
>
> The Ultimate Guide to Spark Plugs
> <http://brianesser.com/main/index.php/9-tech-info/26-the-ultimate-guide-to-spark-plugs>
>
> image
> <http://brianesser.com/main/index.php/9-tech-info/26-the-ultimate-guide-to-spark-plugs>
>
>
>
>
>
> The Ultimate Guide to Spark Plugs
> <http://brianesser.com/main/index.php/9-tech-info/26-the-ultimate-guide-to-spark-plugs>
>
> Automotive Technical Information, Automotive News and More!
>
> View on brianesser.com
> <http://brianesser.com/main/index.php/9-tech-info/26-the-ultimate-guide-to-spark-plugs>
>
> Preview by Yahoo
>
>
> There is a good set of pictures of different types of plugs.  Other
> sites discuss where the timing mark appears on the plug, and the
> meaning of different patterns on the insulator, but these sites are
> more for tuners than for people who are using the manufacturer's
> recommendations.
>
> - Dave
>
>     ------------------------------------------------------------------------
>     *From:* "Ed Johnson [hidden email] [TriumphTrophy]"
>     <[hidden email]>
>     *To:* [hidden email]
>     *Sent:* Monday, May 2, 2016 4:50 PM
>     *Subject:* Re: [TriumphTrophy] Re: 1200 Main Jets
>
>     All  of them David but the enrichment jet was in the float bowl on
>     #4 and loose on #2 which affects the effective size of the
>     respecctive corresponding main jet. Most people don't even know
>     the enrichment jets even exist. When I first got my bike all of
>     mine were missing! I suspect that someone in the past has blasted
>     my present float assemblies with high pressure compressed air. It
>     will be interesting to see how it runs with them all in place for
>     the first time since I owned the bike.
>     Regards and thanks for your input. I would still be interested in
>     what size main jets are installed your bike as that is what all
>     other carb issues are based on!
>     Ed J.
>
>     On 5/2/2016 3:53 PM, David Webb [hidden email]
>     <mailto:[hidden email]> [TriumphTrophy] wrote:
>>     Hi Ed,
>>
>>     Which plugs were sooty?  On mine, plugs 2 & 4, I think were sooty
>>     when I did a maintenance at 8K miles.  I lowered the needles by 1
>>     notch on those, but I'm about to do my 18K maintenance and check
>>     those plugs again,  Lots of changes have happened in the
>>     meantime, including new coils, so I want to see what the
>>     difference is.
>>
>>     - Dave
>>
>>
>>         ------------------------------------------------------------------------
>>         *From:* "Ed Johnson [hidden email]
>>         <mailto:[hidden email]> [TriumphTrophy]"
>>         <[hidden email]>
>>         <mailto:[hidden email]>
>>         *To:* [hidden email]
>>         <mailto:[hidden email]>
>>         *Sent:* Monday, May 2, 2016 9:14 AM
>>         *Subject:* Re: [TriumphTrophy] Re: 1200 Main Jets
>>
>>         Thanks Stephen! That's the only response I've gotten so far
>>         but I did find a link to some interesting reading;
>>         http://www.mk1speedtriple.co.uk/triumph-hinkley-faq/
>>             I think your '95 has much different cams and stuff than
>>         my '01 but appreciate the info. My plugs always read rich
>>         when the bike is running well but I only get about 30 MPG
>>         here in flatland Florida! ;-)
>>         Ed J.
>>
>>         On 5/1/2016 11:31 PM, Stephen Johnson [hidden email]
>>         <mailto:[hidden email]> [TriumphTrophy] wrote:
>>>         I'm running 120 mains with 2.5 turns on the enrichment jets
>>>         on my 1995 Trophy 4 1200 here in Virginia. Gets around 38 to
>>>         40 MPG and runs like a scalded dog. Plugs indicate a bit
>>>         rich but does not create any issues.
>>>
>>>         --
>>>         Steve
>>
>>         --
>>         Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200
>>         321-795-4387
>>
>>         <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon>
>>         Virus-free. www.avast.com
>>         <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link>
>>
>>
>>
>>
>
>     --
>     Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200 321-795-4387
>
>     <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon>
>     Virus-free. www.avast.com
>     <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link>
>
>
>
>
>
>
>




---
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Re: 1200 Main Jets

Triumph Trophy mailing list
Hi Ed,
I can honestly say that I've never had more than a few seconds at WOT on my bike.  As much as I'd like to do the full Italian tune-up with plug reading and everything, I'm just not in any position to do it, and I'd be a bit scared to take the bike up to those speeds, anyways.
I can speak to the choke question also.  On my bike, 1/4 to 1/2 added enrichment is all it ever needs, depending on ambient temperature.  
The funny thing about it is, my bike has been sitting in the garage for a few weeks while I'm waiting for things to come together for me to get a new chain on it.  I've made sure to head out and start it at least weekly and to roll up the idle speed to about 3K rpms after letting oil circulate through the engine (so it'll charge the battery).  For the most part, I'm not letting the bike warm up to full operating temperature though.
I mention this because it starts way easier when the bike hasn't heated up fully, requiring less enrichment.  This is as-compared to when I've ridden it 33 miles one-way on my daily commute.  The next morning or afternoon, it's usually a bit slow to start, and it runs on 2 or 3 cylinders for a few seconds until all 4 start running.  If I drain the float bowls after the bike cools off, the gasoline is a darker color than the nearly clear color that goes into the tank.
I think the lighter elements of the gasoline in my float bowls are boiling off when I park the bike.  I don't prime the circuit every time I get on to ride, so I'm not sending fresh fuel to the float bowls prior to starting. I think that the added enrichment gets that extra fuel to the engine once there's enough vacuum to open the petcock, and then the bike starts up.
There are other possibilities. At 12K miles, I had two valves at the low end of tolerance.  If they're not closing enough to get full compression during start then that could also explain slow starting.  If they're not closing completely during run, that could affect the plugs and could also cause them to not close completely, ever.  My next valve check is soon, and I plan to go ahead and make some tolerance adjustments at that time.  I designed a tool that I will try to build, and that will allow me to push a valve down and release it without rotating the engine for each valve.  If it works, I'll post pictures.
- Dave
 
      From: "Ed Johnson [hidden email] [TriumphTrophy]" <[hidden email]>
 To: [hidden email]
 Sent: Tuesday, May 3, 2016 10:19 AM
 Subject: Re: [TriumphTrophy] Re: 1200 Main Jets [1 Attachment]
   
    [Attachment(s) from Ed Johnson included below]  Hi Dave! Thanks for the interest. In a perfect world I'm guessing that you are correct in your thinking that the enrichment circuit would only be in effect when it was engaged. [But look what I'm thinking with! :-[] Providing that there is not a lot of wear in the circuit and when the choke is closed it is truly closed. In my case however considering the difference in size of the jet hole and the hole it came out of I can now understand why others needed full choke in order to start their engines and if I did that I had to change a couple of plugs if it didn't start and 1/4 choke [Or None] was plenty on my bike.Unfortunately when I rebuilt my carbs I used float assemblies from a lower mileage bike but didn't insure that these jets were firmly in place. They are simply a press fit but considering how firm the pressure I used to replace the fallen one that should be adequate considering the flow is opposite of the direction needed to dislodge them.My home compressor can only accomplish about 119 PSI with a small tank so is not able to maintain that pressure for very long and is no where near enough pressure to blow these jets out. I can only assume someone  with access to a "Shop Quality" air supply could possible dislodge them depending also on what kind of liquid cleaner was accompanying this pressure. My Dad always said; " Make something Idiot Proof and God will simply make a better Idiot!" I replaced my fallen one firmly in place and no amount of WD40/ Carb Cleaner/ Air pressure [as above] combined could dislodge it again although I'm going to use a replacement but i like to experiment with stuff like this! [Retirement has it's merits! 8-)]
      I haven't looked at your recommended site for reading plugs yet but I can assure you I have had a long and extensive career in reading plugs so am definitely "Old School" in that regard. Having said that the problem I've had since the beginning with main jets on a Trophy's is accessibility. In the old days [for me that was the late 50's and early 60's] We found a deserted highway somewhere, tucked ourselves in, and proceeded down said highway with Wide Open Throttle. If at top speed closing the throttle a minute amount caused an increase in speed we were too lean. If not then we simply pulled the clutch while simultaneously hitting the "kill button" and coasted to the side of the road and pulled the plugs. [Being careful of course to put a rag over the plug hole to avoid cold air access to the hot valves etc.] We could then read the plug and adjust the main jet [s] accordingly. Once this process was achieved satisfactorily we could then move on to further tuning procedures like needle placement, slide cutaways, carb syncing, and such. This process is pretty hard to beat as it takes into consideration the wind load on the bike which even a DYNO can only estimate if considered at all. I think this process would be almost impossible on our Trophy's without considerable help and equipment.
      To get accurate results all the Tupperware would have to be in place during every run. A traveling roadside workshop would be a definite requirement [Air Conditioning a must for those of us in Florida and other hot climates] A minor adjustment in jet size would be a very time consuming exercise unless someone has a magical way of changing main jets without pulling the carbs. I could go on and on [Like I usually do :-[] but the attached document goes into great detail about tuning our Trophy's and I will leave it at that!
  Thanks again for your interest! --
 Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200 321-795-4387 On 5/3/2016 8:24 AM, David Webb [hidden email] [TriumphTrophy] wrote:
 
  Hi Ed,
  I'd guess that the enrichment jets would only affect the mixture when the enrichment circuit (choke) is engaged.  Am I thinking wrong on this?
  I looked through the photos of my disassembled carbs on Photobucket and unfortunately, I took them all with the jets turned threads-up.  There are no numbers visible.
  I found a good site that discusses how to read spark plugs that might help some...
  The Ultimate Guide to Spark Plugs
   
|     |
|     |    |     |     |     |     |     |
|   The Ultimate Guide to Spark Plugs Automotive Technical Information, Automotive News and More!    |
|
  |
|  View on brianesser.com  |  Preview by Yahoo  |
|
  |
|     |

 
  There is a good set of pictures of different types of plugs.  Other sites discuss where the timing mark appears on the plug, and the meaning of different patterns on the insulator, but these sites are more for tuners than for people who are using the manufacturer's recommendations.
 - Dave
   
      From: "Ed Johnson [hidden email] [TriumphTrophy]" <[hidden email]>
 To: [hidden email]
 Sent: Monday, May 2, 2016 4:50 PM
 Subject: Re: [TriumphTrophy] Re: 1200 Main Jets
 
         All  of them David but the enrichment jet was in the float bowl on #4 and loose on #2 which affects the  effective size of the respecctive corresponding main jet. Most people don't even know the enrichment jets even exist. When I first got my bike all of mine were missing! I suspect that  someone in the past has blasted my present float assemblies with high pressure compressed air. It will be  interesting to see how it runs with them all in place for the first time since I owned the bike.
 Regards and thanks for your input. I would still be interested in what size main jets are installed your bike as that is what all other carb issues are based on!
 Ed J.
 
   On 5/2/2016 3:53 PM, David Webb [hidden email] [TriumphTrophy] wrote:
 
  Hi Ed,
  Which plugs were sooty?  On mine, plugs 2 & 4, I think were sooty when I did a maintenance at 8K miles.  I lowered the needles by 1 notch on those, but I'm about to do my 18K  maintenance and check those plugs again,  Lots of changes have happened in the meantime, including new coils, so I want to  see what the difference is.
  - Dave
 
   
       From: "Ed Johnson [hidden email] [TriumphTrophy]" <[hidden email]>
 To: [hidden email]
 Sent: Monday, May 2, 2016 9:14 AM
 Subject: Re: [TriumphTrophy] Re: 1200 Main Jets
 
         Thanks Stephen! That's the  only response I've gotten so far but I did find a link to some  interesting reading; http://www.mk1speedtriple.co.uk/triumph-hinkley-faq/ 
     I think your '95 has much different  cams and stuff than my '01 but appreciate the info. My plugs always  read rich when the bike is running well but I only get about 30 MPG  here in flatland Florida! ;-)
 Ed J.
 
   On 5/1/2016 11:31 PM, Stephen  Johnson [hidden email][TriumphTrophy] wrote:
 
 I'm running 120 mains with 2.5 turns on the enrichment  jets on my 1995 Trophy 4 1200 here in Virginia.  Gets around 38 to 40 MPG and  runs like a scalded dog.  Plugs indicate a bit rich but  does not create any issues.
 
  --
  Steve  
 
 --
 Ed J. Indian Harbour Beach,  FL 2001 Triumph Trophy 1200 321-795-4387
 
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 --
 Ed J. Indian Harbour Beach, FL 2001 Triumph Trophy 1200 321-795-4387
 
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Re: 1200 Main Jets

Triumph Trophy mailing list
In reply to this post by Triumph Trophy mailing list
Good looking spark plug. It looks like the ones in both of my bikes. Greg
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