What are good headgaskets??

  • Sponsors (?)


cool thanks...

tell me something.. alot of people are telling me the reaosn they blew was ebcause im running 13 pounds of boost.... they told me that alone would kill my stock gaskets... is that true???? i hoenstly think that a lean condition did it, but lets say it wasnt lean.. could the boost alone kill them? or thats bs?
 
If you go with a Cometic MLS or Fel-Pro MLS (Mulitple Layer Steel) style gasket instead of blowing the gasket you'll pull the crown up on the piston or break other parts. They are not for novices... The MLS style gaskets also require a certain RA finish on the block and head.

I'd suggest the direct replacement gasket from Fel-Pro they are like a 8548PT-2 ($21/each)or the 10111($32/each) (upgraded gasket). The direct replacement (cheapest gasket) can hold a lot of boost but the tune needs to be there, the 10111 will be a little more forgiving. I have seen the PT2 take 28psi on boost from a 800HP+ combo.

I would upgrade to head studs if you don't already have them, make sure the deck and head are flat.

ALL HEADGASKETS WILL BLOW, if the tune is not right, you get greedy, or the surfaces are not flat. Can you get a pic of the gasket, this will tell us how it blew and we can make a more educated guess as to why.

What do the plugs look like? What gas were you running? In the winter months all gas stations switch to a "winterized" gas which has a lot more oxygen in it and this will create a lot of issues on a power adder car. It will make more power and the fuel demands will change. We pulled the crown up on a piston fresh off the dyno and datalog runs by adding in some of the winterrized gas. Be Careful, Exxon and Sunoco are the most highly oxgenated brands.
 
Rick 91GT said:
If you go with a Cometic MLS or Fel-Pro MLS (Mulitple Layer Steel) style gasket instead of blowing the gasket you'll pull the crown up on the piston or break other parts. They are not for novices... The MLS style gaskets also require a certain RA finish on the block and head.


Yeah they need about a 15 micro inch finish. Most older V8's block and heads are machined to around 40 micro inch.