mantisgb
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| posted on 10/9/11 at 11:00 AM |
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38mm inside diameter fuel filler screw cap
I lost my fuel tank filler cap at Silverstone, and whilst I know the inside diameter is 38mm I'm not sure what measurement to take to get the
thread right. I've bought a replacement neck plus cap from JJC Race and Rally but whilst it has 38mm inside diameter the thread is completely
different  . Any ideas what measurements I need to take or where I could look for a replacement?
Cheers! Keith
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JeffHs
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| posted on 10/9/11 at 04:32 PM |
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38 mm sounds a lot like 1.5 inches. There are several thread types it could be - BSP (old British Standard) NPT US imperial pipe sizes or metric.
Start looking at Google for thread pitch and diameter
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mantisgb
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| posted on 11/9/11 at 09:17 AM |
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pictures of thread, ideas for solution anyone?
Here are a couple of pics of the capless thread in the hope this might inspire someone to say "!! I know what that is!!!" Any
suggestions as the best approach if I can't find the same cap? Get one machined or take the tank out and get the new neck and cap I bought
welded in its place?
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Mal
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| posted on 17/9/11 at 10:00 AM |
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Take a look at the Compbrake website, they sell that style of filler.
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