Ok guys this is for all of you with a 24v that have replaced you OEM headgasket with a 20 thousandths over marine gasket.

How do you like it?
Does it smoke upon startup?
Any trouble starting?
Loss/gain of noticeable power?

Also please post if you had the head milled and if so how much. Also please post if you have an ETC or an ETH. I have 3 trucks that we are O-ringing and I am considering using this gasket. All of the trucks are between 500-600 HP single charger with boost levels below 60 psi.

Thanks for your input.

Doug

 

You lead a hard life. Working on three truck pushing 5-600hp with one charger.

 

Shoot one of the trucks made over 590 uncorrected HP @ 37 lbs boost. This truck is a daily driver that pulls horse trailers all the time. Its nice seeing trucks come together and work well with the right complement of parts.

Doug

 

That's sort of what I'm looking for with mine. Except I want twins.

 

[list=1][*]Mine's +.030 marine. [*]Shredded the 1st gasket w/ stock bolts, added studs and no problems w/ gasket #2.[*]Slight haze of smoke under 45°F OAT. Most likely due to the other fueling mods. [*]Zero problems starting in -5°F, rough idle for the first 30 seconds if not plugged in at that temp.[*]I don't have any way to judge the gain in HP other than the truck was at 200rwhp before the change and ~600rwhp after. [*]Brand new head, DonM port & rings. [*]ETC manual[/list=1]

The gasket that blew was checked for oring depth and sealing quality. It was perfectly sealed on the stock firerings. Two bolts were stretched to .020".

brandon.

 

If I remeber correctly, HeberRam tried a marine headgasket on his ETH before finally getting the head o-ringed a few years ago. He complained about loss of power.