broncobuckinaround
Member
- Joined
- Sep 24, 2012
- Messages
- 432
- Reaction score
- 1
- Points
- 16
- Vehicle Year
- 07/86
- Make / Model
- ford
- Engine Size
- 4.0
- Transmission
- Manual
ok i want to start this short thread by saying thx to those who have been giving me the great info.
ok so i know the compression ratio for this 91 460 is 8.5 to 1.
i took apart another 91 460 i had here. just to see whats in side. the head casting are E7TE they arent too bad of heads. i know there better ones out there. but these are good from what ive read.
from what i can see and read. the piston at tdc isnt flush with the block deck.
the velves open very close to 1/2 inch. after tdc the valves start to open. by the time the valves get past the chamber, very little does, the piston is plenty far away.
now heres my question. how far can i go before a stock head gasket can no longer be used. i was told by a machine shop at 50 thousands my compression would be around 9.5 to 1. can i go higher?
we have 91 octane here where i live. would this fuel be sufficient to use at 9.5 to 1. as a daily driver.
i would like it to be at least 10 to 1. but if it isnt safe and 91 octane wont cut it ill stick with what i can get.
thx to all who reply.
ok so i know the compression ratio for this 91 460 is 8.5 to 1.
i took apart another 91 460 i had here. just to see whats in side. the head casting are E7TE they arent too bad of heads. i know there better ones out there. but these are good from what ive read.
from what i can see and read. the piston at tdc isnt flush with the block deck.
the velves open very close to 1/2 inch. after tdc the valves start to open. by the time the valves get past the chamber, very little does, the piston is plenty far away.
now heres my question. how far can i go before a stock head gasket can no longer be used. i was told by a machine shop at 50 thousands my compression would be around 9.5 to 1. can i go higher?
we have 91 octane here where i live. would this fuel be sufficient to use at 9.5 to 1. as a daily driver.
i would like it to be at least 10 to 1. but if it isnt safe and 91 octane wont cut it ill stick with what i can get.
thx to all who reply.