View Single Post
Old 11-07-2014, 12:03 PM   #2
SkinnyG
Registered User
 
SkinnyG's Avatar
 
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 2,295
Re: Compression ratio question

I am running iron heads at 10.9:1, with as little squish as I can get away with. I have a cam with a lot of overlap, and it seems to be working. It does not seem to ping on 91, and I think max timing is 34 or 35 at the moment.

As I understand it, one of the the reasons this is working for me, is the 0.015" head gasket I am using - it minimizes squish, which (I think) increases turbulence in the combustion chamber, making it less prone to detonation.

But I'm no professional engine builder....
__________________
1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, turbo, LS
1977 Silverado: Shortboxed & dropped, potato-potato
V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag
Lotus Super 7 Replica: Scratch-built street-legal rollerskate
SkinnyG is offline   Reply With Quote