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70HP Street Twin

263K views 1K replies 107 participants last post by  ashwinbala 
#1 ·


My dream has been answered. What does everyone think? Is Triumph restricting the the 900?
 
#3 ·
Logged in just to give that a Like... All on the stock ECU map as well. Runs with no harm... I’m impressed. Great work by that guy & his crew.
 
#5 ·
Very interesting. I was thinking of selling the Twin but this might keep me interested. I am not convinced about the tune not being available. I need to take my bike to the dealer and confirm before going forward. The dealer said they hadn't received any TSB on the tune not being available but had to hook the bike up to be sure.
 
#8 ·
Way to go George, brilliant development. I did wonder how they achieved the A2 compatibility on a 900cc engine.
I don't think that Triumph have dropped the baby here - the bike/engine is fabulous in stock form, that is abundantly obvious from all the positive reviews, and the low rev HT characteristic suits the "style" of the bike.... BUT ... who would sensibly ignore adding 30HP for the sake of a cam tweak?

It would be great if Triumph offered this to maintain warranty ... and George should be granted a big slice of their revenue, but neither of these is at all likely.

So... I may try to wait till after the 2 year warranty - but then maybe I wont ... 30 HP is 30 HP is 30HP
 
#13 ·
It would be great if Triumph offered this to maintain warranty ...
When the bikes were launched Triumph did show us a range of racing parts, the performance camshaft is still shown as part number A9610492 on some Factory sites sites, like this:

http://www.triumphmotorcycles.co.uk/accessories/performance/2015/performance camshaft kit a9610492

Using that part number in a search we came across sites where it was offered at €625, considerably more than TEC's item. It's no longer available though.
 
#9 ·
Very interesting, the man is a true professional, the company are well respected in after market tuning.

One bit I didn't follow, at 17 - 18 mins he says the difference between the 900 engine & Thruxton R 1200 engine is all in the top end?

Doesn't the Thruxton R have a totally different & lightened crank? Maybe he meant to say the T120.
 
#10 ·
Pretty incredible improvement! Would be very tempted by this for my Street Scram, but part of me would want to wait until it was out of warranty. His comment about needing a brake upgrade too is telling, I already find them pretty anaemic. That said, I'm already paying the higher insurance for riding a 900cc motor, why not use it ha!
 
#16 · (Edited)
Yes, he explains in the video that the comparison is done with stock ECU tune & stock bike, but for an X-pipe on each. Then obviously shows the step-by-step chart comparisons with slip-on’s, then air-box, etc... Still all with stock ECU tune. This was a great video... And he didn’t even have to start every sentence off with a “So...” and sound like an annoying follower tool... #Try-Too-Hard
 
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#19 · (Edited)
Emissions are nothing to pooh-pooh... However, removing the CAT & changing the cam on motorcycles is sort of like going from 6 people peeing in the ocean, to 10 people peeing in the ocean... And with those healthy figures displayed in the video, whatever fuel consumption figures are reduced, big or small, I just don’t see how it could out weigh the gained fun & better overall riding experience/enjoyment one would now get from every ride. Even if it were to drop, however slight, it’s still going to be amazing MPG. So likely a non-factor.
 
#20 ·
I think George makes a convincing case. Probably more important than the ease of restricting the 900 for new riders is the ‘competition’ a 70hp 900 would have given the 1200. Triumph want to sell lots of the bigger bikes (because you can charge more for them >:) ) and use the smaller one as a ‘gateway drug’. How many times do we see on this forum folk ‘trading up’ to a T120?

There definitely room in my T100 for a more sporting cam. :smile2:
 
#24 · (Edited)
While there is much more power to be gotten out of 900cc, for me, the 10k service intervals and reliability were a reason to buy a T100. Conservative tuning is certainly a reason for that, even if 50 hp out of 900cc seems rather gentle. But it gets a few hundred hours of riding before a moderate service (10k miles!),and no need to open the engine for maintenance for many years. I wouldn't want to trade that for extra hassle if that is the price of more high strung tuning.

Had bikes where the manual calls for new pistons after 15 hours of use (and even when not used for racing, the engine needed to be rebuild in less than 100 hours). Most engines can be tuned to become that needy. So more power is nice, but there is a price beyond the performance parts.
 
#27 ·
You make good points and, yes, in standard form the 900 should last for as long as there’s petrol on sale to put in it. But, if the conclusion that the 900 has been artificially restricted is correct, releasing the extra power (that was designed in) will cause no problems with either rideability or durability.

You pays your money and takes your choice.

I don’t seek a massive increase (if I wanted a really fast bike I would buy one) but a little extra power and torque is always welcome. Years ago I ran (and raced) SOHC Hondas and the Yoshimura ‘Road & Track’ cam was brilliant. It caused no running problems and simply magnified the standard power curve. Exactly what is being claimed for the TEC cam. I’m prepared to risk it. :smile2:
 
#26 ·
I liked the stock handling of the T100 but the engine was totally uninspiring.... that's a polite way to say boring and felt a step up from a just a novice/beginner big bike.
So I bought the T120 after a 20 mile test ride.

I've done dozens 2 stroke and dozens of DOHC 4 stroke rebuilds, some trickier then others with obscure cam timing marks,(etc.).... but I'm guessing many of us have.

I also heard the veiled comment about the fueling mod on this one at 70HP but, if I had a T100, this cam kit would be in my possession, in the least amount of days as possible after it's release.... and probably installed the afternoon of receiving it!!
 
#31 ·
I wonder if the cam restriction on the 900 has anything to do with emissions regs? He also mentions that the water-cooled 900 motor has a single throttle body and that having dual throttle bodies would improve performance. Can the throttle bodies from an air-cooled 900 simply be bolted on?
 
#32 ·
no, throttle by wire, dont' forget. Though with some effort like a head swap, the dual throttle bodies from the 1200 could possibly achieved, but that'd be some trickery for sure.

I e-mailed them to get on the list as well. The biggest complaint I have about my Street Scrambler is the lack of power, followed by the lack of front brake. I say this every time I ride it. Having a Thruxton R also in the driveway really magnifies this shortcoming.
 
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