Head Gasket ? Please Help

[bad71camaro]

Well with only 10miles on my new car I blew a head gasket It was a felpro regular old head gasket and stock bolts. The gasket blew at 26psi does this sound right? Needless to say I now am going to have to buy new stuff. I plan on buying arp head studs. I dont want to run a metal head gasket so what would be the best head gasket to run the car is going to be run 31psi at the most and I dont want to have to worry about blowing another one so what would be the best non metal head gasket to buy? Also I think the specs call to torque the bolt so 85pounds but a few people around hear have been tourquing to 110pounds, what are you guys opoions on these things? Any help as always is appreciated

 

[joeracer321]

if you want to run a metal head gasket you will have to machine the deck of the block so it is absolutely flat. Otherwise your gasket will not seal. People have had good luck with the mitsubishi multi layer gasket. I would probably get the head machined while it is off, swap to studs and run the mitsubishi head gasket. good luck.

 

[4geze63]

I would get some 850cc injectors if i were u

 

[defrag010]

What are you doing running 26 psi 10 miles after a rebuild?

 

[TSIfreek]

I think you should reevauate your max boost for the equiptment you have. I would not run any mor than 23 psi of boost on a stock head gasket with stock bolts it just plain domb for you to use the stock bolts to begin with.
With ARP head studs and the FACTORY OEM gasket torqed to 80 FT lbs with moly lube you should be ok at 26 psi. Its really all in your tune for head gasket reliablity. Make sure you have you fuel system upgraded and have some type of fuel management for that PSI level or you will have more problems than a blown head gasket. Unless you like pulling your motor.

 

[zxdude]

no kidding .. i cracked all my pistons when i spiked to 28 just for a second on a fresh rebuild 10-20 miles (didnt hook up waste gate) opps. pictures in my profile

 

[bad71camaro]

I no that I should not have been running that much boost on a rebuilt motor when I bought the car he told me he had it set to 15psi. But when i got on the car it spiked to 26psi and I was on it through all of 2nd gear until I noticed but it was to late. The car does have safc to be tunned with and I no that I need bigger injector I had an appointment at extreme to get the car tuned and put 760s in it before it blew up. He mistakely told me that it had arp head studs but it didnt. He is sending them to me in the mail so the will be put on. I am looking to run 30psi when it is broken in so what would be the strongest non metal head gasket to run?

 

[green92gsx]

Theres really not much options on non metal head gaskets besides oem and felpro that I can think of. If your looking to run alot of high boost on your motor, I would go with a metal gasket.

I use arp studs with a mitu metal head gasket. Running 26+ psi for about 10,000 miles now with no problems.

 

[bad71camaro]

I just have read alot about the metal gaskets leaking and that the block really should be machined perfect and I did not want to have to pull my motor just to run a metal head gasket but let me no what your guys experiences are with them. Thanks for the replys

 

[sweet97]

Say bad71camaro i guess that you just bought the car so have no opinion of some of the parts. I am interested in the 2-221 FMIC. I have a 50 trim and 720cc inj's were way too big. i now have 660's. Mark

 

[fastdsmz]

You need a metal hg. If ypur going to run that kind of boost you need some arps aswell. I dont understand why you wouldnt want a metal Ive ran them for years with no problems. Mitsu multilayer and now cometic. If you want one that will not blow get cometic. Some people have problems some people also dont know how to torque correctly! I would advise you to go metal but them again I would look at my boost gauge every time I punch it

 

[bad71camaro]

I posted on here about the 2-221 because it was so small I doubted it effecincy but everybody sayed that they loved it and the it was a very good front mount I just always like the looked of the front mount taking up the whole bottom grill. I am going on what everybody told me about the injectors but I am going to ask extreme what they think.

I am not saying that I dont want a metal head gasket but alot of people on hear have sayed that they have had problems leaking. Did you have you block machined and do you have any leaking problems

 

[sweet97]

I have the 221 but have not finished the install but have not heard much about it so i was wondering if you had experience on how well it handled the 20G. Isn't the cometic a layered gasket, not what I call a full metal shim gasket? we used layered gaskets on conquests all of the time. Hey bad 71 30+ PSI, isn't that above that turbo's range? Mark

 

[green92gsx]

I pretty sure the 2-221 and 20g combo is good for low 11's-high 10's at the 130 range. It was the intercooler of choice back in the day.
Why wouldn't a 20g be good for 30 psi ?

bad71camaro,
My block and head was machined before installing the metal head gasket. I've heard of people using copper spray with metal gaskets only when surface conditions wasn't perfect.

 

[sweet97]

The 20G may be fine at 30+ PSI. I was questioning if indeed it was. I hope the 2-221 allows my 50trim 20 PSI on pump without knock. Mark

 

[GPTourer]

I am not saying that I dont want a metal head gasket but alot of people on hear have sayed that they have had problems leaking. Did you have you block machined and do you have any leaking problems

When faced with this same issue a few weeks ago, I went with the OEM gasket and ARP's. For the Mitsubishi MLS (or Cometic), I don't think you have an option. The block and the head have to be honed/decked/surfaced whatever you call it and be true. No exceptions. I didn't want to pay for the block to come out of the car so I went with the OEM. But I'm not planning to run 30psi either. Your going to have to have a metal gasket to do that, and your going to have to pull the engine, IMO.

 

[bad71camaro]

That is what I figured about the metal head gasket I also dont want to pull my block. With arps and a felpro alot of people around hear have been running 25psi on a daily bases and boosting close to 30 on race gas. What do you guys think of the felpro the is also a non metal head gasket on dsmparts that says that it is good for 450hp. It has some weird japanese name.

 

[fastdsmz]

I have used metal hgs on both decked blocks and stock blocks never once have had a problem. I've put them on several stock blocks never out of the car. Mostly mitsu mls, but now Im using cometic looking to run 30+ psi next year. But like I said before alot of people do not torque hgs right, maybe thats why they have problems?You can torque metal higher and its not a one step deal!

 

[sweet97]

20g is out of it's efficiency range at 30 psi. Doesn't you can't be very quick with one asBuschur has run in the 10's with their 20G which is a modded 20G at $1350. More than boost to go quick. bad71 yu will do fine with less boost and a gasket that will be more forgiving. mark

 

[green92gsx]

20g is out of it's efficiency range at 30 psi. Doesn't you can't be very quick with one asBuschur has run in the 10's with their 20G which is a modded 20G at $1350. More than boost to go quick. bad71 yu will do fine with less boost and a gasket that will be more forgiving. mark

So your saying Buschur ran 10's on the 20g with low boost to stay in the "efficiency range " because it went slower at high boost. Yeah right.
I think some people spend too much time looking at hacked up compressor maps from the 80's. Look at them maps with a gain of salt. Hell half of them or not even fully complete.

 

[TSIfreek]

That is what I figured about the metal head gasket I also dont want to pull my block. With arps and a felpro alot of people around hear have been running 25psi on a daily bases and boosting close to 30 on race gas. What do you guys think of the felpro the is also a non metal head gasket on dsmparts that says that it is good for 450hp. It has some weird japanese name.

You may want to try the AJUSA performance head gasket that jackson auto machine sells.
http://www.jacksonautomachine.com/html/shopping/list_section.cfm?sectionId=29

 

[sweet97]

I never said Buschur ran lower boost to stay in it's more efficient range. I have not asked him what boost he ran but I will. Remember his 20G is not typical at $1350. it has mods that are probably proprietary. No reason to take offense. i'm trying to learn the best range for the 50 trim. I am hoping for 20 PSI on the 2-221 Spoearco. Buschur also had mega head work and mega bucks to run that 20G into the 10's. My point is that bad71 can run quick with less boost than he thinks and still be quick and employ a more user friendly gasket in doing so. Is the goal to run as much boost as possible or run quick? has it occurred that the quicker car may run less boost? mark

 

[GPTourer]

I have used metal hgs on both decked blocks and stock blocks never once have had a problem. I've put them on several stock blocks never out of the car.

I think that its possible to get by, but risky. My head and block were not warped at all when I replaced my gasket, so maybe I could have gotten an MLS to work without decking the block. But I think the stock stretch bolts and paper gasket are a cheap fuse to save your bottom end in case something goes wrong. With studs, I wonder how people really know what the limit is, or they just assume that when it lets go on them - that that was the end. I'd wonder how far really good tuning (with DSMlink, Haltech, VPC, etc) could take you on the stock gasket before you have problems. As opposed to having a strong gasket be a band aid for not so good tuning and losing your bottom end instead.

On another note, I thought Buschur's 20G was TD05H based, so maybe you'd have more top end capability with the Td06H at the expense of spool.

 

[bad71camaro]

my turbo is a buschur racing 20g

 

[bad71camaro]

You may want to try the AJUSA performance head gasket that jackson auto machine sells.
http://www.jacksonautomachine.com/html/shopping/list_section.cfm?sectionId=29

Yeah that is the head gasket that I was talking about. It says that is good to 450whp which I hope to get somewhat close to so it sounds like just what Im looking for. Do any of you guys have experiences or opions on this gasket and info would be great.