Do I need a thicker head gasket?

Machine shop is wrapping up the machining on my engine and head work.

.002 skimmed on head, .004 on the block.

Question is, do I need a thicker head gasket over just .006?

 

Only if there's going to be interference with the valves/pistons; honestly I'd take the extra compression. The builder can determine if that will be needed.

 

maybe



in all seriousness it depends on the style of piston that you are using and if is is significantly taller than stock, i seriously doubt that you will have an issue but it should be verified while the motor is taken apart

 

This is what I ordered. Nothing extreme.
https://www.pd-tuning.com/shop/mazd...reme-duty-88mm-0-20-bore-forged-dish-pistons/

 

it literally says extreme right in the product name!!!
still going with maybe, gonna just have to measure everything once it is in hand and then order a head gasket. or just order a thicker one and take the small compression hit.

 

Extreme duty. Like doodie. ha. Will look more when I get it all back. May just get a cometic .036" to be safe.

 

Edge Autosport had it in stock, and shipped it out today. .036 thicker so I am safe. https://edgeautosport.com/cometic-head-gasket-mazdaspeed-3-2007-2013-mazdaspeed-6-2006-2007/