28-08-2024, 04:35 PM
(This post was last modified: 28-08-2024, 04:37 PM by Andy Bennett.)
OK, I think I got away with it, assuming it doesn't change when hot.
Squirted a little oil down bores as were dry and of course previously wet so no lubrication present.
Turning over cold (with 3 tightenings of studs to 20lb since yesterday) as I am awaiting a new top hose hopefully arriving tomorrow before refilling coolant.
Compression across 1-4 130, 100, 110 and 120. Appreciating that whilst all over 100 there is a significant variation (noting cold). Repeated twice turning over for 15 seconds to give plenty of opportunity for any crunching.
When the head gasket blew I had 80 on 1 and 4 (engine still warm).
When I last tested (with same gauge) 3 years ago I had 85 to 95 across all.
As I said, more by luck than knowledge, I hope I have got away with it?
I will repeat all when I have run to hot but can the skimmed head really have improved compression that much, combined perhaps with a new gasket and better/flatter head to gasket joint as the numbers seem a little too good?
Andy
Squirted a little oil down bores as were dry and of course previously wet so no lubrication present.
Turning over cold (with 3 tightenings of studs to 20lb since yesterday) as I am awaiting a new top hose hopefully arriving tomorrow before refilling coolant.
Compression across 1-4 130, 100, 110 and 120. Appreciating that whilst all over 100 there is a significant variation (noting cold). Repeated twice turning over for 15 seconds to give plenty of opportunity for any crunching.
When the head gasket blew I had 80 on 1 and 4 (engine still warm).
When I last tested (with same gauge) 3 years ago I had 85 to 95 across all.
As I said, more by luck than knowledge, I hope I have got away with it?
I will repeat all when I have run to hot but can the skimmed head really have improved compression that much, combined perhaps with a new gasket and better/flatter head to gasket joint as the numbers seem a little too good?
Andy
Enjoy yourself, it's later than you think!