Does anyone make a head gasket < .050?

[frontrange]

It looks like my old head gasket is a bit over .060 after being compressed. I'd like to zero deck the block and get the quench to .050 or less with a thinner gasket if one is availible?

I'm planning on running the compresssion up to 9:1 since I'm at well over 6000 ft above sea level.

TIA

 

[grant5127]

No.......

Thinner? Get real..........

There are other ways to boost compression ratios........

 

[frontrange]

So how do you get real and have a effective quench of under .050 with a .062 head gasket? Run a negative deck height and hope you don't punch through the inside edge of the gasket at the cylinder bore?

 

[dargreg]

Run .062 gasket and stay standard,lots of ways to adjust for altitude.

 

[frontrange]

.062 is ineffective for quench, and if I have to take this thing down closer to sea level in the future, I don't want to have to deal with engine knock because I ran the compression too high to deal with my current circumstances.

I'll pay cometic to make me a custom gasket if I have to, but I want to make sure there isn't an aftermarket gasket that is a tad thinner than 60 thou before I go to that expense. I can't believe no one else with flat top pistons has ever tried to build an engine with an effective quench area.

 

[Poser]

Have you cut the cylinder head at all?

 

[frontrange]

Not yet, I have to source a head gasket before I know what deck height and chamber volume I will be using.

 

[Poser]

So what would be the issue with using an existing head gasket and cutting the head to get you desired result?

 

[frontrange]

IOT get the piston within the 40-50 thou head clearance that provides an effective quench area, you have to have a zero'd deck (flush with the piston top at TDC) and a gasket that is no more than 40-50 thou thick once compressed (or some other combination with the same effect).

The gasket that came off is 62 thou compressed, which is too thick to provide the "squish" that is effective in controlling detonation when you raise the engine's compression. It maybe that there is another OEM or aftermarket gasket that compresses to less, but I'd rather not buy every possible one, then mic it and see if it will compress to 40-50 thou, hence the question does anyone know of a brand that is thinner.

When I built my Vette engine a few years back, I was able to get the quench down to .039 using a Cometic gasket at .027. That engine runs pump gas on my annual trip to Florida at sea level with no ping and a static compression ratio of 11.37:1. Quench is a good thing and I would not want to raise an engine's C/R much beyond stock without a plan to get it.