I'm interested in this too... 
When is O-ringing the block called for?
Thread Starter
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Joined: Feb 2003
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From: Spring Hill, TN
When is O-ringing the block called for? I'm curious at what point it would be necessary (or highly advisable) to O-ring a block when doing a boosted motor.
The plans call for a 402 with AFR 225 heads with studs and a good head gasket. Perhaps about 15lbs of boost.
Thanks.
The plans call for a 402 with AFR 225 heads with studs and a good head gasket. Perhaps about 15lbs of boost.
Thanks.
From what I know of it O-ringing is supposed to seal the heads better and allow it to keep the boost in extreme application...Most guys on here are running MLS head gaskets which are doing the job rather well...MLS stands for Multiple Layer Steel...Cometic and Gm are both popular brands...I have seen people run way over 15psi with these gaskets and no problems...Just make sure that you have a thick deck and studs which you already are doing...In your application I wouldn't think it to be necessary...
O-ring your heads and run the gm mls and you'll have no problems as long as your tune is right and you dont pull a mighty mouse 
, We've seen over 25psi on a similar set up with no problems.
, We've seen over 25psi on a similar set up with no problems. SCE gaskets has made me a set of their trick TITAN ICS gaskets....they were the originators of that design. It incorporates an O-ring that does not require you to machine the block or head. Ken Dutweiller tested a set for them, and threw something like 42PSI on a 289 small block for 50 dyno pulls. They are insane...
Do you think that those gaskets would be necessary on an engine\turbo setup that is going to be pushing 15psi max??? I'm sure that they have a pretty price tag too...I like reassurance myself though so if he feels that they are necessary then those are definitely an option..
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Verdad Gallardo Oh I agree...A Dry sump oiling system is money well spent too...it gives you more horsepower and insurance of constant oil flow around corners and under extreme g's but if you don't need it....I'm just saying that guys are doing pretty well without them and if they are that much then I would only put them on if I had a problem with blowing gaskets...You're not going to really blow a MLS gasket unless you're pushing a crazy amount of boost or have extreme detonation or some kind of factor like that...
The Felpro head gaskets with the pre-flattened steel fire ring is also a solid choice.
The thing with all the gaskets mentioned is to ensure your motor does not detonate, use good quality head studs, assembly lube and a good torque wrench. Back off the stud torque and re-tighten after a few days of driving, as per the instructions. Your 15lbs should be fine without any o-ring.
Jim
The thing with all the gaskets mentioned is to ensure your motor does not detonate, use good quality head studs, assembly lube and a good torque wrench. Back off the stud torque and re-tighten after a few days of driving, as per the instructions. Your 15lbs should be fine without any o-ring.
Jim
Originally Posted by BLk01SS
It was in HOT ROD John, Cometic just introduced it. I think you have to custom order them. I'll see if I can find a link to the write up and post it.
They use a gas filled o-ring. They sound trick, but way to pricey for me.The Titan ICS gaskets are around $175-$200. They look very interesting. I believe it's a copper gasket with a firewire ring inside the copper (not exposed). I'd like to hear from some LSx users who have tried these... I might even give them a try if I can't find someone who's used them assuming they make them in a 4.125" bore. My only real concern is seeping and very long term durability.
Originally Posted by Pro Stock John
I'd like to hear what Mike Brown is doing, I don't think he is running copper head gaskets.
Originally Posted by allthrotle
Hey wet 1 yes they do make the titans in a 4.125 bore.
