Tec Camshaft

If you're seriously thinking of having a TEC cam fitted then it would be helpful to you if you read my (this) post from the beginning. As I've said, I had the camshaft fitted at Youles Manchester and it has made a significant difference (details described previously). They charged me £250 to do the job. I bought the cam direct from TEC and ordered the other odds and sods from Youles, which came to just under £30.
So the whole job wasn't cheap but I found the lack of oomph all the way through the rev range (plenty at the bottom end) frustrating. Having the cam swopped is a lot cheaper than trading in the bike.

 

I think if your bike is still under warranty, or not far out of it, you should think twice before going for a cam swop. But my bike is over 4 years old and I very much doubt if Triumph would have helped out should a problem have arisen with the engine at this stage. They do have a bit of a poor rep for this.
I looked into this carefully. Thousands of post-2016 Bonnevilles have been sold. Many have covered high mileages. There have been a few issues, but relative to the numbers sold only a very few. I spoke to George Milburn at TEC, and yes of course he wants to sell his products, but he was very convincing when explaining why Triumph restricted the 900cc engine and how the extra horses could be released. The TEC cam is as well made as the standard Triumph cam, in fact they are (or at least were originally) made by the same people.
I spoke to the technicians at Youles. They had done the cam swop on several bikes and there have been no problems.
I realise that some people would feel nervous about doing this. Fair enough, but I took the plunge and I'm glad I did.

 

I know this thread is well over a year old but I'm just wondering if you ever had the camshaft job done. Also, why do you need to travel up the M6 for an hour and a half when the Manchester Youles shop is so much nearer to you?

For anyone interested I have had absolutely no issues with the TEC camshaft.

 

I agree with Pegscraper. You shouldn't have any problems with fitting the TEC came to your 2017 ST.
If you want further confirmation you could email George Milburn at TEC Parts for his advice or try asking at a Triumph main dealer. The chaps at Youles Triumph Manchester were very helpful and enthusiastic about the swop.
If you go ahead, then I'd be interested to hear how it went and what you thought of the transformation. Good luck.

 

From my experience you will be in pretty safe hands at the Manchester Triumph shop. I hope you're as impressed with the increase in power as I was. Let us know how it goes.

 

Sorry to hear about the puncture, at least you came to no harm, which is the main thing. Have you got the original cast wheels and tubeless tyres or did you swop them for spoked wheels with tubed tyres? Just curious about the tubed vs tubeless thing.
As you say, you've not had a chance to check out how the new cam has affected performance. Will you be taking it easy for the first few miles? The Youles technician told me not to bother, so I didn't . I noticed a difference as soon as I rode out of their carpark, it picked up more quickly and had an urgency I hadn't felt before.
Coincidently I've just got home from a trip to Youles for a browse. They've got a stonking, immaculate mid-90's FireBlade that I drooled over (not literally).
The Street Twin is the easiest bike to ride that I've ever owned and the cam swop has upped the power to make it even more fun. When you get it out on the road give it the beans and let us know what you think.

 

You will definitely find more power! The first generation 900cc engine put out around 55bhp's. George Milburn reckons that the cam swop, together with the X-pipe decat and better breathing end cans (or exhaust) should up that to around 68bhp's. I can easily keep up with my brother on his T120 on motorways and his bigger bike can't match mine at traffic light GP's (yes I know it's childish).

I can't remember, have you dumped the catalytic converter?