Gasket thickness

[rcspeedmart]

what difference on the engines does the gasket thickness makes I see they come in 005, .012, .020 and more, and is there a difference in the copper heavy duty steel which is better? Thanks in advance.

 

[46u]

You use the different thickness gaskets to set you squish. So far I have not had any problems with the Zen blue gaskets on any of my 4 CY motors. I do like the the looks of the Steel Reinforced gaskets.

 

[rcspeedmart]

Ok thanks what is a squish?

 

[Deluge1]

The thinner the gasket, the higher the compression. A thicker gasket decreases compression. Depends on what you want. The higher the compression, the more bottom end you get. The lower the compression, the more top end you get.

[ame]

[/ame]This video basically explains squish. Skip to about 7:10.

As far as gasket material, I've only used the blue gaskets and haven't had an issue with them.

 

[46u]

I like to set my squish .020 to .025 of an inch and most engine builders do the same.

 

[rcspeedmart]

Oh great thanks for all the information a little to technical for me. thanks a bunch!!!!!!!!!!!

 

[rob64n]

put a .012 in it, although I have also used the .005, it makes a nice difference

 

[rcspeedmart]

put a .012 in it, although I have also used the .005, it makes a nice difference

Thanks for the tip!!!!!!!!!!!!!!!

 

[racetruck]

I use .10 shim stock and it works fine rob64n and i have used the copper and i"am using the steel shim stock with great succes and this gasket sealer pic below

 

[jeffp83]

Depends on what you want. The higher the compression, the more bottom end you get. The lower the compression, the more top end you get.

I always thought when you have more compression you get increased torque and RPM?

 

[Deluge1]

It's give and take. Higher compression = more torque, but you lose some RPM's, and vise versa.

 

[ImminentFailure]

More compression = more torque, max power occurs at a lower RPM.

Here's a reference I used in the past if you want to learn all about 2 stroke compression effects. http://www.drrinc.com/pdfs/higher_compression6.pdf