|  | Topic : Valve adjustment shim screw up - always use genuine Triumph shims... |  |
| | | vrider | | Set |  | | Reg. Date | : | 21/02/2026 | | Posts | : | 38 | | Location | : | United States |
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| | Posted : 19 Aug 2026 - 01:30 Post title : Valve adjustment shim screw up - always use genuine Triumph shims... | | | My 2013 1700 Storm had 33000 miles on it when I bought it. I'm pretty sure nothing had ever been touched. Found the RH decompressor broken off when I opened the cover. intakes were tight and exhausts loose. I thought I'd save a buck and use some "Vintco" 25mm shims. First of all, the thickness was wrong on all of them. Usually thinner than was was printed on it. Second, they weren't exactly 25mm in diameter - more like 24.97mm. I thought it wouldn't make a difference, but they were too "ticky" after just a few miles. I couldn't stand it, so I ordered the shims I needed from Triumph and did the whole things again. What a pain. Sounds good now. Moral of the story, don't use aftermarket shims.
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| | | Leethal | | Zeus | |  | | Reg. Date | : | 24/01/2011 | | Posts | : | 6,632 | | Location | : | Australia |
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| | Posted : 20 Aug 2026 - 01:42 Post title : Re: Valve adjustment shim screw up - always use genuine Triumph shims... (Re: vrider) | | | Honda use the same shims on some older models. Last time I tried to buy some they were NLA here in Australia.
| Experience is something you get just after you needed it 
1600,Foran Razorbacks, Meerkat bypass, Dyno tune, real headlight,plenty of chrome,switchblade pegs, Nitron R3 shocks & Ikon progressive fork springs etc. Scorpion Western Low handlebars. PH adjustable fork caps.
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| | | vrider | | Set | | | Reg. Date | : | 21/02/2026 | | Posts | : | 38 | | Location | : | United States |
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| | Posted : 20 Aug 2026 - 23:17 Post title : Re: Valve adjustment shim screw up - always use genuine Triumph shims... (Re: Leethal) | | | The Honda shims were NLA? Or Triumph shims? Or both?
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| | | Leethal | | Zeus | | | | Reg. Date | : | 24/01/2011 | | Posts | : | 6,632 | | Location | : | Australia |
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| | Posted : 21 Aug 2026 - 01:55 Post title : Re: Valve adjustment shim screw up - always use genuine Triumph shims... (Re: vrider) | | | Honda, never mentioned Triumph.
| Experience is something you get just after you needed it
1600,Foran Razorbacks, Meerkat bypass, Dyno tune, real headlight,plenty of chrome,switchblade pegs, Nitron R3 shocks & Ikon progressive fork springs etc. Scorpion Western Low handlebars. PH adjustable fork caps.
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