Offshoreonly.com

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   head gasket selection (https://www.offshoreonly.com/forums/general-q/350687-head-gasket-selection.html)

BBYSTWY 11-06-2017 06:34 AM

head gasket selection
 
need help choosing head gaskets...in the process of "freshening up" my 525 sc....its getting a set of dart heads roller cam and 575 sci blower...whats a good choice for head gaskets?? it will have ARP head studs installed as well...may seem like a dumb question but I know not all gaskets are created equal

thanks

Stewart

TorchLK 11-06-2017 06:54 AM

Need to know more about the setup to recommend an exact head gasket.... desired compression ratio, piston cc, head cc, etc.

I would highly recommend an MLS (multi-layered steel) head gasket though, but I cant make a recommendation on brand or thickness

BBYSTWY 11-06-2017 07:14 AM

oh yea sorry...shooting for 8:5:1 forged pistons not sure on brand yet....119 cc dart heads iron eagle that's about all I know at this point...looking for 7-8 lbs of boost and it does have a chiller

thanks

Stewart

mike tkach 11-06-2017 08:27 AM

you don,t need a mls gasket for you,r power leval,a fel pro perma torque would be what i would use.edit in,i also would not use head studs,arp head bolts would be a better choice.

BBYSTWY 11-06-2017 08:30 AM

would the MLS be added protection?? just want to make sure hopefully I only do this once hahaha

thanks

Stewart

dcb 11-06-2017 10:22 AM


Originally Posted by BBYSTWY (Post 4592088)
would the MLS be added protection?? just want to make sure hopefully I only do this once hahaha

thanks

Stewart

You need to have heads and block machined to a finer RA for MLS gaskets.

BBYSTWY 11-06-2017 10:40 AM

so maybe just stick with the felpros and hope for the best??

What about this...lets say the engine had 9:1 compression...how does that change things??

Stewart

Griff 11-06-2017 12:27 PM

The Felpro marine gaskets will be fine. I ran them on my bumped up 525SC with 8# of boost.

TorchLK 11-06-2017 01:16 PM

I'm sure a stock style head gasket will work just fine but I would highly recommend stepping it up to an MLS. Especially since you are re-doing everything you can have the heads and block finished to the correct surface finish for an MLS.

I cant think of any drawbacks to an MLS if done properly. I cant actually name a modern engine that doesn't have an MLS gasket.

Also, what is your reasoning for recommending head bolts over studs?

Griff 11-06-2017 02:17 PM

I also just used ARP head bolts and not studs on mine.
IMO, studs are overkill for what he is doing and he will most likely have to grind the lower studs to clear the exhaust.


All times are GMT -5. The time now is 08:51 AM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.