help with magna head to get high compression
help with magna head to get high compression
Just wondering if anyone can tell me how much i can take off a magna head to gain a compression ratio up around 11 to 1 mark
spoto a 57 chev
...a 57 2 door
...a 57 2 door
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Scorpma82
- Sigma-Galant Police (Global Mod)
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- Location: melbourne
Re: help with magna head to get high compression
answer is dependant on the bottom end more than the head
U using an Astron I or II block?
Std or O/S (or modified) pistons
are u running the std crank?
U using an Astron I or II block?
Std or O/S (or modified) pistons
are u running the std crank?
Built with pride, Driven in anger
Re: help with magna head to get high compression
Astron 2 bottom end with std pistons and crank
spoto a 57 chev
...a 57 2 door
...a 57 2 door
Re: help with magna head to get high compression
If your around brisbane I can weld the comp chamber
Cheers stealth
Cheers stealth
Engineering the unfair advantage !
Red bull , fuelling the fastest race cars on earth !
Red bull , fuelling the fastest race cars on earth !
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Superscan811
- Posts: 1689
- Joined: Sun Mar 22, 2009 4:12 pm
- Location: Sydney
Re: help with magna head to get high compression
2.5-3mm is the maximum you can take off a M6 to M9 magna head.
The kidney shaped M8 or M9 head have a smaller combustion chamber, so would be a good place to start.
A good idea is to also deck the block, so the pistons are 0.25mm above the deck height. This improves the "squish" zone, which helps reduce detonation.
If you remove a lot from the head, you would need to space out the hydraulic tensioner AND probably need an adjustable cam gear, to get the valve timing correct.
Cheers.
The kidney shaped M8 or M9 head have a smaller combustion chamber, so would be a good place to start.
A good idea is to also deck the block, so the pistons are 0.25mm above the deck height. This improves the "squish" zone, which helps reduce detonation.
If you remove a lot from the head, you would need to space out the hydraulic tensioner AND probably need an adjustable cam gear, to get the valve timing correct.
Cheers.