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-   -   Early engine spec question (http://forums.pelicanparts.com/911-engine-rebuilding-forum/1165573-early-engine-spec-question.html)

zztot 08-13-2024 10:09 AM

Early engine spec question
 
Doing a build on early 2 liter T engine. Based on upgrades have some piston/valve clearance issues due to bigger valves and DC 30 cams.
From the experts, is there any difference in valve angles ( in essence the heads) in T engine and early S (68/69) heads other than size of valves.
Thanks

Flat6pac 08-15-2024 06:26 AM

Terry, valve angle is the same
Bruce

zztot 08-15-2024 08:08 AM

Heads
 
Thanks Bruce……We were figuring they should be , but Cam Mfg said something like the valve reliefs in early S pistons were at an odd angle, so needed to check that box before we started trying to fly cut pistons to provide clearance for new cams (DC30s).

Rosco_NZ 08-16-2024 01:34 PM

Recheck that cam timing

zztot 08-17-2024 05:03 AM

Clearance
 
Pretty sure he did several times.


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