MortenBayliner
New member
Hi all engine guys.
I have recently changed my cylinder head on my OMC V8 5L small block 1988
The reason to this change was cylinder 7 who had a low compression (6.5bar)
Cylinder 1-3-5 was (9.5-10 bar)
Now can anyone help me to understand what the removed cylinder head are trying to tell me.
By looking at below picture, I would say cylinder 3 and 5 are looking just perfect,
Cylinder 7 is a little rusty, and I do also suspect the exhaust valve to be the reason for the low compression on this cylinder.
But what about cylinder 1, cylinder 1 had good compression (10bar) but it is very clear on the picture, it is very black and sodded.
Way?, bad mixture? any suggestions??
All the best
Mr Bayliner
I have recently changed my cylinder head on my OMC V8 5L small block 1988
The reason to this change was cylinder 7 who had a low compression (6.5bar)
Cylinder 1-3-5 was (9.5-10 bar)
Now can anyone help me to understand what the removed cylinder head are trying to tell me.
By looking at below picture, I would say cylinder 3 and 5 are looking just perfect,
Cylinder 7 is a little rusty, and I do also suspect the exhaust valve to be the reason for the low compression on this cylinder.
But what about cylinder 1, cylinder 1 had good compression (10bar) but it is very clear on the picture, it is very black and sodded.
Way?, bad mixture? any suggestions??
All the best
Mr Bayliner