Going To Be Runing 20 PSI.. Which Head Gasket?

[DSM_ThuNDeR]

hey guys I have came accross a 95 gsx with 660's and a afc.... It has no compression on 2 cylinders(1,2). Im not really worried about not having compression, I have used a MLS head gasket before and did not work.. tourqued the head that time to 80 lbs.

Im going to be using APR head bolts for this project, will a graphite hg work good enough to hold the psi im shooting for???

what do you guys recomend?

 

[The_EE]

I run the stock head gasket. My stock 132,000 mile motor held almost 30 psi for quite a few runs and ran at 22psi for a long time with no problems.

As for the compression, get it fixed, dont half ass it.

 

[DSM_ThuNDeR]

does anyone have the stock number for the head gasket?

I'm pretty sure some valve seats are not making valves seat... either way I'll find out when the head is out.

 

[skeeter4200]

sounds like either your valve seats or piston rings took a dump on you as far as the HG i would use a cometic HG Search Results for " extreampsi.com " has a combo deal on ARP and cometic HG for like 155 or right around that price

 

[turboglenn]

The first thing you NEED to fix is not having compresssion. There's not a head gasket n the world that's going to fix a blown motor, so take care of that issue first, then worry about the head gasket when you're putting the motor back together. Buy a Cometec HG, i've seen them go a long ways, but there may be something better out there that some one will chime in with.

 

[AshTsi]

I would go with the MLS HG, Lots of people use it in combo with those arp's works awsome. Just make sure that your head and block are all in good order. When you used the mls last time did you have your head surfaced?

 

[blownturbotsi]

I'm using a Mitsu MLS also. I plan on running ~30ish psi also on my 6152e and I have no worries about the HG going out.

 

[DSM_ThuNDeR]

I would go with the MLS HG, Lots of people use it in combo with those arp's works awsome. Just make sure that your head and block are all in good order. When you used the mls last time did you have your head surfaced?

no, haha.. I thought that the head was 100% since the car never overheated. Im going to look that combo for 155... sounds pretty good will 100lbs work or should I tourque the head further more?

 

[snowborder714]

If you're asking what the APR head studs should be torqued to:
http://www.dsmtuners.com/forums/cylinder-head-short-block/187841-arp-head-stud-torque-specs.html

 

[turbotalawd]

mls mitsu headgasket + arp headstuds = badass combo!!! mine has seen high psi by accident a couple times with no problems.

 

[420a-t]

If you are only going to be running 20psi, go with what is tried and true, OEM mitsu composite. I'll be running that this year, but closer to the 30psi mark. It's less than an mls, and you don't have to get the block redecked if you don't want to pull out the entire engine. Just my .02

 

[DSM_ThuNDeR]

alright guys.. i Think im going to use copper spray to help it seal.. anyways later on im going to post on how to use an afc with 660's because I have NEVER used one before..

 

[DSM_ThuNDeR]

If you are only going to be running 20psi, go with what is tried and true, OEM mitsu composite. I'll be running that this year, but closer to the 30psi mark. It's less than an mls, and you don't have to get the block redecked if you don't want to pull out the entire engine. Just my .02

how much is this one?

 

[Boost92awd]

how much is this one?

Search, the vendors on this site.

 

[blcknspo0ln]

If you are pulling the head, I would highly recommend at least taking it to a machine shop and checked for flatness. If it is not, a mill is in order.

 

[snowborder714]

Head gasket
Part number - MD183808
Price - $41.44
OEM Mitsubishi Parts

 

[420a-t]

Exactly what I did about 3 weeks ago. Head redecked, OEM mitsu gasket (I think I got mine from slowboy or extremepsi), no copper spray, ARP's torqued to 90 ft/lbs. I figure this should be a pretty solid setup. When you take off the head, make sure you clean the block really good, reguardless of the headgasket. Good luck and have fun!

 

[420a-t]

Here's some supporting vendors:

https://secure.buschurracing.com/ca...d=157&osCsid=5491dfeccdab447c7934cbf34f3cbb6d

Slowboy Racing, Inc. :: DSM :: Engine :: Gaskets :: Head Gaskets :: Mitsubishi :: Mitsubishi STOCK FELT 4G63 Head Gasket

EXTREME PSI : Your #1 Source for In Stock Performance Parts - OEM Composite Head Gasket : Mitsubishi Eclipse 90-99

 

[mylevi08]

Im going threw a build right now I ordered a cometic multi layer hg with the rubberized coating and arp head studs from extreme alond with a topline kit for the misc gaskets and seal. acl race bearings and eagle rods wiseco 9:1 standard bore in a 99 block <-- made without oil squirters for some reason. so it should be a nice little car with some 272's meth and 114octane. but I opted for the cometic new design simply because i've seen people use the stocker with high boost and run into issues. the cometic and arp combo was only 165 from extremepsi.com.. just call and when it goes automated dial ext 111

 

[My98slvrGSX]

I have the oem hg on and im running 22psi. no problems what so ever.

 

[DSM_ThuNDeR]

im thinking the guy blew the head gasket because its two cyls that are next to each other that have NO compression...(he put oil in them, and nothing..) so if its not the HG then the head would def need a valve job . He said he got a JDM 7bolt motor put on it about 18K miles ago.. from which car do you think it will be from? EVO3?

 

[DSM_ThuNDeR]

Also, are there any vendors that have the mitsu composite with apr head sud's combo?

 

[blcknspo0ln]

I think extreme was doing that for a while, call 'em up.

 

[GORBS88]

For that boost level there is no reason to not use the stock OEM one with ARP studs. I ran my EVO 3 at 23psi for one full season and my hx-35 at 28psi for another season and haven't had any issues.

OEM composite + ARP studs

 

[blcknspo0ln]

OEM composite + ARP studs

So that's what, +1241241 for the OEM+ARP vote? Fyi, there are those who have gone 10's pushing over 30 psi with that combo. Is that fast enough? Of course, that's not to say a properly sealed cometic or MLS won't work either.