installing larger valves BBC
Thread Starter
Melting Slicks
Joined: Feb 2000
Posts: 3,052
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From: Vancouver BC, Canada
installing larger valves BBC
how are bigger vavles installed in BBC heads? what machine work is required? Is cylinder head porting req'd to take advantage of the larger vavles? thanks.
(just realized this is a better place to post this topic)
(just realized this is a better place to post this topic)
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: installing larger valves BBC (Turbo-Jet)
If you had the 2.19 1.88 heads you can install the 2.25 valves and 1.90 exhaust. There is room. I did this last winter. I think the 2.08 heads will only go to 2.19. Porting never hurt anything except bottom end.
Norval
Norval
Thread Starter
Melting Slicks
Joined: Feb 2000
Posts: 3,052
Likes: 0
From: Vancouver BC, Canada
Re: installing larger valves BBC (norvalwilhelm)
If you had the 2.19 1.88 heads you can install the 2.25 valves and 1.90 exhaust. There is room. I did this last winter. I think the 2.08 heads will only go to 2.19. Porting never hurt anything except bottom end.
Norval
Norval
i am curious what machine work is req'd?
porting hurts bottom end? huh?
[Modified by Turbo-Jet, 11:50 AM 9/21/2001]
