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2mm redblock headgasket

S

Steerfromdarear

Member
Joined
Oct 7, 2017
I'm have trouble finding a 2mm head gasket standard type or mls they seem to be a long wait on the places I've contacted.
 
OVERDRIVE said:
.010"? With pistons poking anywhere from 0 to .007" I'd run the stock gasket, I'd love to have that kind of squish.


Carrier pigeon

No, the chat window on the Cometic website.
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I have a 1.8mm gasket would this work? in total with the with the amount off block and head I need 1.94 gasket be standard compression
 
cwdodson88 said:
The amount that was removed doesn’t really matter. The amount that the pistons are above the deck is what matters.

My advice, measure the piston>deck heights to be sure, then aim for a piston to head clearance of 0.035 (+0.0025) inches.
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If the pistons are .254 above the deck if you fitted 1.2 standard hg + .254 =1.454 would leave standard head to piston clearance how would this leave the valves and compression
 
culberro said:
Is this a turbo motor?
How much was removed from the head? I see that the block had 0.25mm removed.
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Turbo motor I checked it before I over heated the engine to leave it back to standard I used a 1.5mm head gasket It was skimed again .4 so I need a 1.9mm gasket
 
Steerfromdarear said:
Turbo motor I checked it before I over heated the engine to leave it back to standard I used a 1.5mm head gasket It was skimed again .4 so I need a 1.9mm gasket
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Ok, so 0.4mm off the head is just about getting into the good place for a turbo motor, see below.

You have only removed about 2cc of volume from the chamber, so the head around 49.5 CCs (~4.5cc/mm of head being machined).
Your final CR with turbo pistons and a stock thickness HG is 9.1:1 CR, which is a great spot to be in.
If you're using naturally aspirated pistons the CR would be 10.3:1, which means you'd probably want to open the head a bit by unshrouding the exhaust to gain some chamber volume. Or run it at the higher CR and possible have some detonation unless you lower boost or alter the timing.

If the engine has turbo pistons, I'd run it as is with a stock HG. It would be a really good place to start.
 
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culberro said:
Ok, so 0.4mm off the head is just about getting into the good place for a turbo motor, see below.

You have only removed about 2cc of volume from the chamber, so the head around 49.5 CCs (~4.5cc/mm of head being machined).
Your final CR with turbo pistons and a stock thickness HG is 9.1:1 CR, which is a great spot to be in.
If you're using naturally aspirated pistons the CR would be 10.3:1, which means you'd probably want to open the head a bit by unshrouding the exhaust to gain some chamber volume. Or run it at the higher CR and possible have some detonation unless you lower boost or alter the timing.

If the engine has turbo pistons, I'd run it as is with a stock HG. It would be a really good place to start.
Click to expand...
The head was skimmed twice
 
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