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Performance enhancements follow-up question 120-130

posted by  walrus3 on  Thu Jan 22 09:10 CST 2004
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last visit: Mon Dec 2 14:20 CST 2013
[RELATED]

I haven't studied the B18 heads like I have the B20s but if you are fairly sure
your head is not from a marine engine, the E and F B20 heads have ports for
fuel injectors, the others (with smaller valves) don't.
If it is LESS than 3 3/8" thick it is a high comp head (B20E, etc) but if it
is more than that it is low comp (B20F).
In either case if you are going to use a B20 head on a B18, your comp ratio
may be low at standard bore but if you bore it to 3.5" it will be fine.
(That is the main reason not to use a B20 head on a B18 engine.)
You'll need to be sure the gasket is for a B20 and preferably the thin
head gasket (B20E, etc).
--
George Downs, Bartlesville, Oklahoma, Central US






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New Performance enhancements follow-up question [120-130]
posted by  Aidan  on Thu Jan 22 08:48 CST 2004 >


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