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The TTR250 FAQ web pages -> TTR250 -> Projects and restorations -> Valve shim specs- what's everyone running?
Post Info TOPIC: Valve shim specs- what's everyone running?
benny579


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Valve shim specs- what's everyone running?
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Hi everyone. I bought a 2002 model last year in complete pieces (engine the lot) and am just about to fire it up. All I need is to set the valves and the shims were missing. I had the head reconditioned but I would like to know what valve shim specs everyone is running so I can set the valve clearances as a starting point? 

Cheers 

Benny. 



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locky


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Can only help with with the exhaust valve shims, just checked through the thread I posted when I done mine.
I have 165 shims in both exhaust valves. This was after lapping the valves in.

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2004 TTR250. White Brothers E series exhaust, modded airbox, rejetted, 13/48 c&s & many more mods..
TTRfan


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Locky's suggestion is good. To get a starting point, just use what you have, smallest possible so that you get a gap.

What did you get done to the head when it was reconditioned?

Brian



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benny579


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Thanks everyone. I don't have any shims to start with, they were missing from the start. Just need a base setting so I can go down and get 4 to start with. The head had the valves lapped and new stem seals. They said it was in very good condition. 

Cheers. 



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TTRfan


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Maybe someone in Oz can lend you some? You only need a pair to get you started. Do one camshaft at a time.

Brian



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benny579


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Got it 180ex and 195in.
Cheers.

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