Which engine and Jet size - Triumph Forum: Triumph Rat Motorcycle Forums
Trophy Trophy 3 & 4 - for all 900 and 1200cc models 1991- 2004

 
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post #1 of 7 (permalink) Old 12-05-2012, 11:03 AM Thread Starter
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Which engine and Jet size

Long story but is there a way of telling the difference between a Daytona and Trophy 1200 engine? We know it's a 1200 motor but are trying to find the right jets for it.

The two bikes have different ignition advances, 26 and 29 deg BTDC at 6500rpm but is there a way of checking this whilst the engine is cold?

Any ideas welcome.
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post #2 of 7 (permalink) Old 12-07-2012, 09:26 AM
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Can you pull the cam cover and look at the dabs of paint on the cam lobes? Daytona should have red; I think Trophy should be green. The paint won't necessarily be those actual colors after all this time inside the motor, but you should still be able to tell used-to-be-red from used-to-be-green...

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post #3 of 7 (permalink) Old 12-07-2012, 10:16 AM Thread Starter
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Originally Posted by KitNYC View Post
Can you pull the cam cover and look at the dabs of paint on the cam lobes? Daytona should have red; I think Trophy should be green. The paint won't necessarily be those actual colors after all this time inside the motor, but you should still be able to tell used-to-be-red from used-to-be-green...

Cheers,
-Kit
Hi Kit.

Many thanks for the suggestion and I'll pass it on. Does this mean that the cams are different as well?
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post #4 of 7 (permalink) Old 12-07-2012, 05:54 PM
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Cams, pistons, and igniter are different. Also, all the 1200's used the same Mikuni carbs, but, jetting changed throughout the years. Is this a black motor or grey? To play it safe, I would use 112.5(cyl 2/3) & 117.5(cyl 1/4) mains. This is in the middle of the range of mains used in the 1200 Daytona and the largest for the 1200 Trophy. These should work fine with whatever 1200 you have. Also, check the needle sizes. The larger # goes to cyl 1/4, smaller to 2/3.

Hope this helps.
Happy trails,
Erv

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post #5 of 7 (permalink) Old 12-07-2012, 06:02 PM
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Oh yea, just remembered. If it's a grey motor. Triumph also made a 1000cc four cyl. Basically a short stroked 1200. Don't know what jets where used in that. You could take the number off the crankcase and go to your local dealer and have them look it up. That will give the year and model.

Happy trails,
Erv

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post #6 of 7 (permalink) Old 12-07-2012, 06:10 PM
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My 96 1200 (grey motor) has blue dabs of paint on cam lobes

When Bones and I compared our 1200 Trophy cams, mine were just a bit hotter. His is a 2001 (black motor) and mine is a 1996 (grey). I can't remember the color of paint dabs on the 2001's cams.

He's been looking at a set of Daytona cams for his bike (hotter still than my 1996's cams).

BTW, I'm going to drop the motor this weekend. My money is on the sprag clutch, as the metal bits I've found look to be little pieces of same. Going to be fun to look inside a motor with 56,750 miles on it. Pics will be coming...

John F
1996 Trophy 1200 BRG
2012 Bonneville T-100 Phantom Black & Graphite
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post #7 of 7 (permalink) Old 12-07-2012, 06:35 PM
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Blue dabs? Hmmmm...... Maybe you have the 1000cc Daytona cams. Anyways.....Going with the red dot daytona cams on a trophy motor is a big waste of money unless you get the daytona pistons and igniter. The gains are minimal and disapointing without the other mods.

Happy trails,
Erv

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