Tec 202 Camshaft - Street Twin 900

Discussion in 'Triumph General Discussion' started by Eldon, Aug 6, 2023.

  1. Eldon

    Eldon Elite Member

    Nov 14, 2018
    6,302
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    North Yorkshire
    A breakdown of the cost is as follows ;-

    Cam £360
    Post £6
    Shim x3 £15
    Alternator gasket £9

    No need to change oil and filter for this job as none lost and mine was only 1 month old of low miles.
     
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  2. barneymusician

    Jun 11, 2020
    31
    13
    Chiswick, London, UK
    Yes, agreed on the shocks and a Hagon/YSS upgrade maybe down the line (also agreed on the FOX though they do look premium - which one would expect at that price!) .
    I should have added above that your spoked look great and interesting to hear (as many others testify too) that no problems being tubed. So the T100 in black fit without issue? I had heard that but you the first I've seen to show. Currently £825 from Triumph https://triumphdirect.co.uk/products/black-wheels-a9648040 (but I'd get some £ back from selling the casts). Triumph World have a set for the T120s on a great deal (been on ages) but I guessing these won't fit the ST -
    https://www.worldoftriumph.com/products/triumph-black-wheel-kit-a9648045.
    I do like the aesthetics of my Crafton Atelier seat and prefer to the Motone offering but your custom seat also looks great and as if it might offer up a bit of added rider height (?) whilst also retaining the raised rear for pillion which I did like about the stock (as did my wife!).
    You've got me thinking about those spoked T100s anyway! :)
     
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  3. TRIPLE X

    TRIPLE X Senior Member

    Sep 1, 2021
    357
    113
    Downham Market, Norfolk
    Great that you made your own special tools and saved a fortune. The camshaft timing plate alone is a frightening £138 (World of Triumph).
     
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  4. Eldon

    Eldon Elite Member

    Nov 14, 2018
    6,302
    800
    North Yorkshire
    Well done on the body weight loss as it all adds up, I could do with doing similar myself but it ain't happening : unamused:
     
  5. Eldon

    Eldon Elite Member

    Nov 14, 2018
    6,302
    800
    North Yorkshire
    Does your shocks have a damping adjuster at the bottom?
    My shocks are very similar but all black and were already on the bike when I purchased it, however they don't have the collar yours has.
    Assuming it's a damping adjuster, is that for compression or rebound damping?
     
  6. RevPaul

    RevPaul Senior Member

    Apr 21, 2020
    710
    193
    Cheshire, UK
    Just a quick observation the TEC cam doesn't fit the older air cooled engines such as those fitted on the 2012 Thruxton 900. I'd hate for you or anyone else to waste their money.

    I will also say (as I have observed in threads elsewhere) that my experience of the TEC cam is much the same as @Eldon's, especially the sense that the gearing is better, I'd been thinking about messing about with rear sprockets to see if that would stop me looking for a 6th gear, but now the gearing feels just right.
     
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  7. RevPaul

    RevPaul Senior Member

    Apr 21, 2020
    710
    193
    Cheshire, UK
    Is that the Motone Side panel? And does it cover the upper frame rails better, or is it that your seat sides wrap lower down the frame? Like you, I'm not happy with the exposed loom and upper frame rail under the standard saddle on my Street Cup.
     
  8. Eldon

    Eldon Elite Member

    Nov 14, 2018
    6,302
    800
    North Yorkshire
    Yes I agree, previously I was always running 5th gear on A roads, however, now I can find myself hovering in 4th ready for an opportunity to overtake, or happily sat in 4th corner to corner on a B road.
     
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  9. RevPaul

    RevPaul Senior Member

    Apr 21, 2020
    710
    193
    Cheshire, UK
    Me too and yet my fuel consumption remains at least as good as it was before:grinning:.
     
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  10. Eldon

    Eldon Elite Member

    Nov 14, 2018
    6,302
    800
    North Yorkshire
    #30 Eldon, Aug 7, 2023
    Last edited: Aug 8, 2023
    Of all the bikes I've worked on, which is quite a few, these twin Triumphs are a piece of p155.
    The space, access etc. are to be admired. Take for example Triumphs own triples, access is tight in places ( see pic below). I needed to helicoil a street triple 675 head for the cam chain tensioner - Engine out would have been the dealer answer no doubt, or head off, with significant costs, yet with a few self created special tools, then it can be done in a couple of hours.

    Street twin tips.
    Use special pliers to remove petrol quick disconnect when removing the tank...... don't ask, easily cocked up and Triumph want £77 for the fuel pipe, no separate clips :joy:
    Easily sorted for £4 if you know where to look.

    Take your time and be careful with the injector plug disconnection, this is small, fiddly and awkward.
    Watch any chain tensioner reset clips intently.
    Use the two specialist tools and camchain timing is easy.
    Ensure you have good incremental feeler gauges for valve clearance checks.

    20201020_131659.jpg
    Look how tight this chopped down drill bit is to the frame? ( ST675R)

    20230806_162611.jpg

    https://www.ebay.co.uk/itm/22268075...yEQKC&var=&widget_ver=artemis&media=WHATS_APP
     
  11. beerkat

    beerkat Senior Member

    Aug 14, 2019
    883
    243
    Cheshire UK
    Yes the T100 wheels are a straight swop. They were worth around £600 when I had them fitted and as Bill Smith's had no use for the original ST mag wheels they gave them to me. I sold them on this forum for around £350 I think.
    No, the T120 wheels aren't a straight swop but that is a very good price.
     
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  12. beerkat

    beerkat Senior Member

    Aug 14, 2019
    883
    243
    Cheshire UK
    Yes it is a damping adjuster but I can't remember what it adjusts :laughing:. To be honest these shock are so basic I would be surprised if the adjuster made any difference. I'm not one for messing around with suspension settings. I recently noticed that TEC don't list them anymore and heard it was because the original supplier has gone out of business (or somesuch).
     
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  13. beerkat

    beerkat Senior Member

    Aug 14, 2019
    883
    243
    Cheshire UK
    Yup, they are Motone side panels. I don't like the Street Twin logo and thought about respraying the original panels. Then I saw a pair on the Square Deals site, with 3 horizontal slots. They were inexpensive but lasted about half a dozen 'removals' before 2 of the fitting posts snapped off. After a couple of failed attempts to repair them they went in the bin. It was around this point I discovered Motone and the rest is history.
    They don't cover any more of the frame than the originals, it's the seat that does that. I wanted the stepped look of the original but with the tuck'n'roll style. Aftermarket bench seats, of all makes, look like they're floating on top of the frame, which looks wrong to me. I wanted the seat to hug the frame.
     
  14. beerkat

    beerkat Senior Member

    Aug 14, 2019
    883
    243
    Cheshire UK
    14748FEA-0B81-45D5-8AE9-68F4184B0F0C.jpg
    Thought I'd show the Motone ribbed engine cover now fitted and you can just see the Motone footpeg which replaced the TEC pegs.
     
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  15. beerkat

    beerkat Senior Member

    Aug 14, 2019
    883
    243
    Cheshire UK
    IMG_1961.jpeg

    This is how the ST looks today (headlight bezel soon to be changed). Note the battered bash plate. There are two of the 3 Hondas it shares the garage with.
     
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  16. Eldon

    Eldon Elite Member

    Nov 14, 2018
    6,302
    800
    North Yorkshire
    Spam, mods might as well delete.
     
  17. Baza

    Baza Elite Member

    Jul 25, 2020
    3,417
    750
    Amazing Grace
    Many thanks for your words of wisdom.
     
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  18. Eldon

    Eldon Elite Member

    Nov 14, 2018
    6,302
    800
    North Yorkshire
    #38 Eldon, Aug 8, 2023
    Last edited: Aug 8, 2023
    In addition to @RevPaul comment, I'm not sure @Baza if this, or similar, is actually an upgrade i.e. fast road cam, from a normal scenario.
    I'm wondering if TEC somehow got wind of the originally intended Street Twin cam and so rightly mark this up as a "derestricted cam" rather than a " performance cam".
    Maybe your youngests Thruxton in effect, prior to further emission controls and accounts/marketing fiddling, may already be on par and so little, if anything, to gain.
    Bear in mind the Thruxton has been Triumphs flagship nostalgia model for quite a few years now.

    I don't see it anywhere marketed as a performance cam, do you, or anyone else?

    In comparison, the 1200 offering, is marketed as a performance upgrade.
     
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  19. Pegscraper

    Pegscraper Elite Member

    Jun 12, 2020
    3,283
    800
    Yorkshire
    A cam change was part of the facelift/upgrade by Triumph for the 2019 onwards Street Scrambler/Street Twin giving the bike an extra 9-10bhp. TEC say their cam just brings the older bikes up to 2019> spec.
     
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  20. Baza

    Baza Elite Member

    Jul 25, 2020
    3,417
    750
    Amazing Grace
    I wouldn’t be surprised if this is the case. When I’ve ridden the machine I’ve never found it wanting. But it could really do with a sixth gear. When we went to Wales last year the fuel consumption was not good. We are off again next week but he’s taking his new machine this time. Thanks for your observations.
     
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