70 Hp 900cc Street Twin

[RHB]

Well, it seems that progress continues on several fronts. I have a Street twin and it seems up until this week there has not been much work done on the Street twin performance outside a few well known racing shops with ties to Triumph.

TEC performance in the UK has apparently cracked the performance limit on the 900cc WCTs and has built a cam used only with a stock ECU, x pipe CAT delete and Vance and Hines Fuel map to produce 70 HP at the rear wheel. Amazing gains on what he describes is a moderate cam grind. By some luck I was able to secure a slot in the first limited production run hopefully to be ready by January or even sooner.
His reasoning is that the 900cc and 1200cc are not significantly different in potential power. So why the big HP difference? In his thinking, Triumph for marketing reasons, has seen fit to make the difference more profound by severely limiting the 900cc engines with a restrictive cam, one throttle body and smaller valves. plus a few other obvious things like sleeving the cylinders, tune etc. He reckons when he develops a cam eventually for the 1200cc engines the gains will not be that great, but around 15-18%
increase. Check out his you tube intro;

View: https://www.youtube.com/watch?v=hRk6x_u3mBI

 

[RHB]

I have ordered one of these cams, Tec has had an unbelievable response to this announcement, and nobody here is apparently the least bit interested? Very notable, and puzzling. to be clear, It is not a racing cam, but more of what a stock cam for the Street twin should be. And being manufactured for TEC by one of the UK's top cam suppliers.

 

[Qship]

Good info. Thanks for sharing.

 

[oldhotshoe]

I have ordered one of these cams, Tec has had an unbelievable response to this announcement, and nobody here is apparently the least bit interested? Very notable, and puzzling. to be clear, It is not a racing cam, but more of what a stock cam for the Street twin should be. And being manufactured for TEC by one of the UK's top cam suppliers.

I’ve been begging Tech to sell me one. Not available now. I can’t wait. Is yours installed?

 

[RHB]

I’ve been begging Tech to sell me one. Not available now. I can’t wait. Is yours installed?

The cam was supposed to be ready by end of January, I canceled my order and will see what happens with other options. Apparently he was premature in offering this cam, Raisch also now offers a cam "set" including X-pipe and PCV with pretuned settings. may be the way to go but very pricey.

 

[oldhotshoe]

The cam was supposed to be ready by end of January, I canceled my order and will see what happens with other options. Apparently he was premature in offering this cam, Raisch also now offers a cam "set" including X-pipe and PCV with pretuned settings. may be the way to go but very pricey.

Trying to find Raisch on line. What is the full name of the company?

 

[RHB]

Engine, Tuning & Power
sorry, i should have posted a link, i just bought a rear sprocket from him.

 

[oldhotshoe]

I read that Tech Bike Parts gave up on the 900cc Hi Torque cam. Not going to happen...

 

[oldhotshoe]

Just spoke to "Laurie" at Web Camshafts and she seems very interested in building cams for us. She built (welded up) some racing cams but don't know how long those racy cams will last. Says "new triumphs are way undercammed". She's looking into building cams (weldeding up) cams for the 900 HT and seems to think they would last if in a milder form for the street since they have a "wide roller" . I sent her pics of the valve train for her perusal. I've used their cams in race bikes with no problems. It might be a good time to let them know you're interested. She said the price would be around $500....another topic..Just finished a 2600 mile trip on my '17 Street Twin and the bike performed flawlessly. (used a 17T counter shaft sprockett)

 

[oldhotshoe]

P.S. Tec bike parts sent me a message saying they are suspending development on the 900cc cam. Just when we got our hopes up...

 

[RHB]

he is looking at offshore manufacturing, reported on another forum. sigh...
But there is another firm in Germany making cam "kits" including a pre programmed PCV with timing and neccessary fueling changes, several guys have already installed it and have good reviews. Pricey, but that's dependent on how bad you want it.
Engine, Tuning & Power

 

[oldhotshoe]

Thanks for the tip I emailed them and asked a couple of questions and they responded. .....
"Hi John,
"it is billet."
"The price for the single cam is 619€ ($376.69)(included german Tax)."

Seems like a fair price. Tec Bike Parts caims the computer on the new bikes will make all the adjustments and that nothing else is needed. Wonder if that is true?

 

[RHB]

Thanks for the tip I emailed them and asked a couple of questions and they responded. .....
"Hi John,
"it is billet."
"The price for the single cam is 619€ ($376.69)(included german Tax)."

Seems like a fair price. Tec Bike Parts caims the computer on the new bikes will make all the adjustments and that nothing else is needed. Wonder if that is true?

unlikely, Raisch includes in his package a pre programmed PCV that ajusts fueling and timing, I would think it's a neccessary step, whether you dyno it yourself or just buy Raisch's unit.

 

[oldhotshoe]

I'm considering buying a Raisch kit but their description is confusing. Their translation into English is poor and vague. You mentioned several guys have used Raisch with good reviews. Is there a thread where I can read them?

 

[RHB]

check your messages. BTW, I have spoken to Rainer and ordered a 44 tooth Sprocket from him, a good guy, but if you order try to get him to upgrade the shipping method if timely delivery is important to you.

 

[oldhotshoe]

unlikely, Raisch includes in his package a pre programmed PCV that ajusts fueling and timing, I would think it's a neccessary step, whether you dyno it yourself or just buy Raisch's unit.

I just received an email from Rainer at Raisch. He said: “It makes no sense at all just to change the camshaft. What TEC says is wrong. That's why we have our tuning kits that work perfectly.”...Sounds expen$ive.

salute
Rainer

 

[RHB]

Rainer is a salesman, but there is truth in what he says. He will sell you the cam alone but it is up to you to buy the PCV, dyno tune, time and program it. much easier to buy at least the basic kit, buy your own de cat and he will supply the appropriate PCV with tune for your application. For me it is too expensive for about 5/10 of a second 0-60 time. But the bike is indeed a faster bike.
I'm getting 4.4 seconds 0-60 now (down from 5 seconds with my stock bike) with a Motone De cat , stock Euro4 mufflers, snorkel removed with DNA filter, and Booster Plug fueling device. I have not yet clocked 0-60 with my custom pipes, but I'm sure I can get 4 seconds or a little less. I'm not an expert drag racer so an experienced professional could, I'm sure do better.heres a link to a recent video I did of my mods. if you look on my channel, you can see my sound tests road and static, for my various muffler set ups.

View: https://www.youtube.com/watch?v=rE-JTj7dJf0&t=367s

 

[oldhotshoe]

I'm curious how you're getting your 0 to 60 MPH times? Are you using an accelerometer?

 

[oldhotshoe]

Question answered. I watched your video.

 

[RHB]

Question answered. I watched your video.

The cell phone apps are useful for same bike, same environmental conditions, same rider comparisons, not accurate times. However multiple runs prove they are pretty consistent within their limits.
This week I re-installed my shorty pipes with a different type of DB killer and came away with some pretty good results. I decreased my 0-60 times to 4.1 seconds. The pipes are loud but don't hurt my ears with the DB killers. they are the perforated hole type as compared to the ones I had before that have mechanical baffles protruding into the pipe.
new video

View: https://www.youtube.com/watch?v=6D_4leG-vC8