 Valve Guide Question, 8 mm exhaust valve guide |
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| Highland |
 Oct 1 2017, 12:05 PM
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#1
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Senior Member  Group: Members Posts: 529 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California  |
I'm looking at purchasing a set of 2.0 stock heads that have 8 mm exhaust valve guides.
My understanding is intake guides are 8 mm and exhaust are 9 mm. I assumed they welded the heads to drill out the bore for 8 mm guides, but is that okay? Also if they used intake valve guides all around is the length difference significant? |
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Replies(1 - 1)
| porschetub |
Oct 1 2017, 01:09 PM
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#2
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Advanced Member Group: Members Posts: 4,754 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Pretty sure the exhaust valve guide has a larger O.D. under 16mm and the inlets are over 13mm,they don't interchange.
Make sure the heads you are buying have new exhaust valves and guides...minimum. I never reuse exhaust valves its not worth the risk. |
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