You all were such a great help with my 4053 I have another question.
This old tired 302 has horribly low compression. I mean really low between 100 - 110 in all 8 holes. well for years I just discounted it as being really wore out as that is how it always ran anyway. I while back I went ahead and did a leak down on 2 cylinders on each side and to my suprize they were sealed up pretty darn good considering, and were only leaking 15% or so if I remember right. this doesn't make add up to me. I figure with the super low compression it has it would have crazy blow by, which it doesn't. The leak down test would have shown it leaking like 60% or something stupid like that but it is in not. So here is my crazy idea as what is wrong with it.
The orginal owner told me they were into the 302. I suspect they didnt get the timing marks lined up while changing the timing chain. Just guessing mabey it's off & retarded by a tooth???
What do you all think? Is this crazy idea of mine even remotely possible? i have ran this by a few freinds and they think I am nuts :yes: but I still feel like things dont just add up. I could see if I had a 1 or 2 cylinders that were low there being a problem like head gasket, burnt valve etc... But since evey single cylinder is low there has to be something else going on.
I believe this 302 should have 190 per the books I have read and I know I might loose a little from 5500' of altitude we live at but just for the heck of it I checked a cylinder in my 66 Gt Rustang and it was @ 185.
So am I nuts and don't know what I am talking about or is my crazy therory(sp) possible? I hate to tear into it if I am way off base here.
Thanks in adavance,
:beers:
This old tired 302 has horribly low compression. I mean really low between 100 - 110 in all 8 holes. well for years I just discounted it as being really wore out as that is how it always ran anyway. I while back I went ahead and did a leak down on 2 cylinders on each side and to my suprize they were sealed up pretty darn good considering, and were only leaking 15% or so if I remember right. this doesn't make add up to me. I figure with the super low compression it has it would have crazy blow by, which it doesn't. The leak down test would have shown it leaking like 60% or something stupid like that but it is in not. So here is my crazy idea as what is wrong with it.
The orginal owner told me they were into the 302. I suspect they didnt get the timing marks lined up while changing the timing chain. Just guessing mabey it's off & retarded by a tooth???
What do you all think? Is this crazy idea of mine even remotely possible? i have ran this by a few freinds and they think I am nuts :yes: but I still feel like things dont just add up. I could see if I had a 1 or 2 cylinders that were low there being a problem like head gasket, burnt valve etc... But since evey single cylinder is low there has to be something else going on.
I believe this 302 should have 190 per the books I have read and I know I might loose a little from 5500' of altitude we live at but just for the heck of it I checked a cylinder in my 66 Gt Rustang and it was @ 185.
So am I nuts and don't know what I am talking about or is my crazy therory(sp) possible? I hate to tear into it if I am way off base here.
Thanks in adavance,
:beers: