im building a 2.4 for boost, and just wondering if anyone knows how well the felpro head gaskets hold up. or should i jus buy a cometic? the engine has been bored .020 and lowered comp to 9:1 with wiseco pistons and eagle rods. also wondering how the stock head would hold up too.
I asked about this a couple days ago, everyone had bad things to say about cometec except a few. My motor is the same as yours, .020 over and the 9.0.1 pistons and I am useing the Felpro. I am going to be assembling the engine tomorrow so I hope it hold up.
http://members.cardomain.com/vertz24 1998 Z24 Convertible
I love the Cometics. They have their good and bad like every other company. Felpro isn't a bad company either. Haven't seen many used it high output applications though.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
yea, the only cometic i would use is the boosted cometic through jtuners.com, but they are currently out of the 2.4 gaskets.
tad cherry wrote:yea, the only cometic i would use is the boosted cometic through jtuners.com, but they are currently out of the 2.4 gaskets.
lol, all the cometics are built the same. If you have problems with the NA version, you'll have problems with the boosted version. If you're boosting your motor, the most important thing to add (if you want to keep the cylinders sealed up) are some ARP head studs, and of course make sure the mating surfaces are perfect.
fortune cookie say:
better a delay than a disaster.
My boosted Z has a Fel-pro. I know of other who have used it as well. For $10 each they are a good price. Matched with some ARP head studs works great.
FU Tuning
I also have a Fle-pro head gasket on my N/A now,and I just bought another for my new JBP head and my new Gm supercharger kit thats currently being used as a paper weight on my floor until the weather gets better,I have had it on for three years now and given it a beating it has leaked yet.
Friends Don't Let Friends Drive Stock!!!!!
Fel-pro is a good company! Like said above, ARP studs and the right torque, you should be fine! The Cometic MLS(multi-layer-steel) is appelling though< isn't it!
Failure is not failure if you learn from it
My 12,000 mile Fel-Pro gave up at 15psi and cost me a motor.
So you tell me. You want to install one?
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
^^^^So are you going o-ringed and copper? MLS, 450+Hp is gunna need a good HG!
Failure is not failure if you learn from it
MLS... and quite a few measures to ensure it holds 100% untike that poor felpro.
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
SunfighterGT wrote:My 12,000 mile Fel-Pro gave up at 15psi and cost me a motor.
So you tell me. You want to install one?
-Chris-
You are the first person I have heard of with a problem. What was your set-up at the time? head studs etc..?
FU Tuning
I also wanted to chime in here, and ask what the best option is for the 95-97 2.2 motor? I think fel-pro or the Victor reinz gasket from napa are the only two i've even heard exist for the 2.2 but I do hope I am wrong on that.
I'm about to be re-assembling my built 2.2 and was wondering what the best head gasket to use would be? I want to approach 20 psi on it. So, I want something that will hold up.
When i pulled out my other block, i was working on, also a 2.2, it had a fel-pro gasket on it, and when i installed it, i used the cooper sticky spray, from advance auto parts. That gasket was STUCK to the head! I had to pull a bit hard to get it to coem off. That inspires some confidence about the cooper spray. not sure about the fel-pro part.. Any opinions?
well, if we can go so far as to take someone elses word on it... Major hit 22psi on a felpro headgasket with his LN2 and it did not blow... NO it wasn't a consistent 22psi daily, just happened once. I believe he ran 15psi no problem with his t3/t4 and did not blow it.
I think Notec was the first to hit the nail on the head.
make sure both mating surfaces are perfectly flat and that will greatly reduce the risk of failure.
the copper spray doesn't sound like a bad idea, I just have to find somewhere locally that sells it.
VTLoki wrote:I also wanted to chime in here, and ask what the best option is for the 95-97 2.2 motor? I think fel-pro or the Victor reinz gasket from napa are the only two i've even heard exist for the 2.2 but I do hope I am wrong on that.
I have an SCE copper, planning on 20+
VTLoki wrote:When i pulled out my other block, i was working on, also a 2.2, it had a fel-pro gasket on it, and when i installed it, i used the cooper sticky spray, from advance auto parts. That gasket was STUCK to the head! I had to pull a bit hard to get it to coem off. That inspires some confidence about the cooper spray. not sure about the fel-pro part.. Any opinions?
I've had engines where I had to scrape gaskets off because they were stuck. It really isn't a sign of how well it will hold up, more so of the gasket material and operating conditions.
fortune cookie say:
better a delay than a disaster.
I've got an SCE copper HG sitting here as well, but I've been advised not to oring the block (much less use the copper alone)
stevefire wrote:I've got an SCE copper HG sitting here as well, but I've been advised not to oring the block (much less use the copper alone)
porque no?
fortune cookie say:
better a delay than a disaster.
Quote:
will a felpro hold up?
Last week we had a eclipse GST running 20psi on the dyno. Fully built engine with 2,000 miles on it. We were tuning the car and on the 11th run the head gasket blew out at 7,000 rpm. It was a very ugly and scary sight. A small fire started on his exhaust manifold from the oil that blew out. After the smoke cleared we took a look at it and noticed on the corner of the head is head gasket was hanging it. He was using just a regular head gasket. If you use a non metal gasket your asking for trouble. If it would have blew out while he was on the street some where the car would have burnt to the ground.
OHV notec wrote:porque no?
???
i thought about oringing the block, but it seems to be the less favorable method now adays.. If only jtuners made a pre 98 LN2 MLS order with Cometic
I'd be fine.
the speed shop doing my machining suggested going with a stock replacement.
a friend/GM tech suggested I use a stock replacement and his reason for that was to create a 'fusable link'... hmm food for thought, thats for sure.
we need more options, this sucks!
[font-arial]And why would you not o-ring the block and put in reciever grooves with strong ARP studs?
That sounds pretty odd...
Don't go with a stock replacement if you plan on going into mid range boost. It's just not meant to stand up to the pressure.
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
thats something I'm going to think about carefully before I decide to throw the engine together. ARP headstuds are already here
Cometic MLS for the win
I was a retard, and now I'm permanently banned.
Spotabee Racing (The Fake Z24) wrote:Cometic MLS for the win
What about for us 2.2 people who can't get a MLS? or should i custom order one from them.... hmmm, that may work...
