Triumphrat

sweatmachine · 04-14-2008

Quote:

Originally Posted by Thruxtonboy

Last weekend we made a really good run on the Dyno. The bike produced a impressive 91,6 Bhp on the backwheel.

In a copple af days I will post some prictures...

I'd love to see that dyno sheet!

do you think you could do a dyno run with stock cams on this same motor, as well as the tbike cams to get a direct comparison?

Bottle_Fed · 04-14-2008

You don't need a clutch, save your money. Just get some barnett green springs and you should be good. I believe the pn is MT 23-6 or something like that. If the greens don't hold, get the reds. I'm running red springs with a stock clutch and everything is holding, even on the bottle with a 30hp shot.

Greg

gilligan · 04-14-2008

Uh, could your mechanic come over to the USA and work on my bike? I'll provide the beer.

Thruxtonboy · 04-14-2008

Quote:

Originally Posted by gilligan

Uh, could your mechanic come over to the USA and work on my bike? I'll provide the beer.

Well, to be honest, he still has some more work to do... You know, he normally preparates Honda Racing Engines, specialy CBR 600 RR Racing Bikes for a guy called Benjan and who ownes a racing team. He also has a lot of experieance with the Honda VTR 1000 SP. He was VERY VERY impressed by the building quality from the Triumps Engine. Everything, specialy the valvetrain, it all looks very releable, very good buildingquality with a lot of reserve power. For that reason he is convinsed by the fact that this engine can do a lot more. He believes that this engine (904 cc) with 39 mm inletvalves, high compression pistons, carillo rods and 42 mm carbs is capable of 120 Bhp on the wheel. This all without turbo's, bigger bores and so on...
I dare him to prove that to me in the winter of 2008/2009!!

sweatmachine · 04-14-2008

I don't think you could ever get 120 street reliable hp out of a 904 bike, maybe with radical cams, radical headwork, and 14-1 compression, 45mm+ carbs, etc. Even then, 120 seems unrealistic. (without a turbo, nitrous, etc)

Please do us all a big favor and dyno those Thunderbike and stock cams back to back!

stig717 · 04-14-2008

Nice!...I'm drooling a little. Keep us updated!

M700R · 04-14-2008

Thruxtonboy - that's going to be one heck of a Triumph when you've got it all put back together and running right... Wow... Thanks for posting this.

Regards, Guy

nwraindevel · 04-14-2008

keep it coming, please.

SHILOH · 04-14-2008

Quote:

Originally Posted by sweatmachine

I don't think you could ever get 120 street reliable hp out of a 904 bike, maybe with radical cams, radical headwork, and 14-1 compression, 45mm+ carbs, etc. Even then, 120 seems unrealistic. (without a turbo, nitrous, etc)

Please do us all a big favor and dyno those Thunderbike and stock cams back to back!

These may be the cams in question.

http://www.theshop.co.nz/shopn:biwpg...014:6687_2.jpg

&

http://www.theshop.co.nz/shopn:biwpg...014:6687_3.jpg

I seem to recall someone using these cams in the last 4 or 6 months. Maybe some other forum, but I thought it was here.

sweatmachine · 04-14-2008

Quote:

Originally Posted by SHILOH

These may be the cams in question.

http://www.theshop.co.nz/shopn:biwpg...014:6687_2.jpg

&

http://www.theshop.co.nz/shopn:biwpg...014:6687_3.jpg

I seem to recall someone using these cams in the last 4 or 6 months. Maybe some other forum, but I thought it was here.

yes, those are the same cams but I would MUCH rather see an independent, unaffiliated dyno run. Those dyno runs are just advertising to me until they're proven accurate. I see Thunderbike still hasn't edited that jpg to include the headwork they did to the bike that made that dyno run. When they originally posted on this board about the cams they admitted that headwork was done to the bike, but never amended their dyno chart (advertisement) to reflect it.