416cc Head & Base Gaskets?

[David RD]

I have an Ross 87mm (416cc) 10.8 to 1 piston I intend to install in my 2003 400EX. I wanted to use Cosmetic gaskets but it doesn't appear that they offer a head gasket for an 87mm bore.

Any suggestions?

[400exrider707]

contact C&D racing, right here on this site....they can hook you up with what you need at a good price.;)

[cals400ex]

yeah, they do make a gasket set for that bore. C&D will probably have them in stock.

[David RD]

Great - thanks for the replies. I'll give C&D a call.

[butterbean416]

I have a 416 11.5.1 piston and I'm running with stocks gasket because I blew out two sets of the cometic gaskets but they do make them

[400eXr1d3rZ]

Originally posted by butterbean416
I have a 416 11.5.1 piston and I'm running with stocks gasket because I blew out two sets of the cometic gaskets but they do make them

You could run NO gaskets and just use high temp silicon to seal it.

[buck naked-r]

Originally posted by 400eXr1d3rZ
You could run NO gaskets and just use high temp silicon to seal it.

on which gasket?

[cals400ex]

many people do that for the base gasket on a 400ex. i was about to do it on my 450 until i looked at things closer. i didn't do because of the oil ports down there. they could get clogged pretty easily i figured.

[250X_project]

Yeah, I starved for oil after I used silicone. I have a question also. MY engine has a stock bore of 74mm and now has an 86mm, can I cut the head gasket to fit? or will C&D have these kits for the 250X/300EX?