Fel pro head gasket limit 10mm studs

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BoBaCk1
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Fel pro head gasket limit 10mm studs

Post by BoBaCk1 » Fri Apr 05, 2013 8:01 am

Getting ready to have my car dynoed and looking to hit 500hp on e85 but just wondering if the fel pro and 10mm studs would be a concern on that power level. I'm thinking I can hit that power with 20-23 psi on my turbo. They are the ka24de studs arp 2000 not the Saturn studs. Precision 6262 .82 a/r, full proefi standalone with flex fuel, fic 2150cc, walbro 416lph hard wired . Thanks in advance it's just stressing me thinking about it. Had my fair share of head lifting from bad tunes to bad injectors.
Built ka-t
Arias 8:8:1 .20 over
K1 rods
Arp head,main,rod studs
Kelford 272's,dual valve springs
Precision 6262sp .82a/r, peakboost manifold
Cxracing fmic
Fuel injector development 2000cc
Proefi pro128, e85 flex fuel
Rb25 flywheel, dxd 350z clutch

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airman
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Post by airman » Fri Apr 05, 2013 9:27 am

At 500whp I would begin worrying about the head gasket. Several people have reported 500whp on a plain Felpro but I don't know how long it will be reliable.
R.I.P. 1990 Red Hatch - DOHC 5 speed // CP 9:1 - Eagle Rods - Clevite - ARP // Holset HX35 - 20psi daily - MSPNP2
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Post by RosadoRacing » Fri Apr 05, 2013 9:51 am

The studs are good to 700whp the gasket will not hold maybe you can squeeze out 500 but reliability will be a huge concern idk why people want to make big numbers and use a cheap gasket like felpro.should have got cometic I haven't seen anyone with a felpro make big numbers

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airman
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Post by airman » Fri Apr 05, 2013 11:05 am

Cosworth head gaskets on sale for $110 - a steal. I bought one myself and I don't even have a 240 right now.

http://www.cosworthperformance.com/stor ... tegory=105
R.I.P. 1990 Red Hatch - DOHC 5 speed // CP 9:1 - Eagle Rods - Clevite - ARP // Holset HX35 - 20psi daily - MSPNP2
8-bit wrote:You could spend your life building a ladder to the moon, or work for 5 years to pay for a trip.

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Post by sdaigle240 » Fri Apr 05, 2013 11:52 am

berkshire look him up he had quite a few miles high hp on his. it did end up blowing i think it was somewhere in the 6s though.
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Post by BoBaCk1 » Fri Apr 05, 2013 12:33 pm

Well I kept stock head gasket because everybody claimed bad experiences with cometic if surfaces were not prepped for it. And my surfaces were not prepped. Maybe I could have got away with it but I didn't want to chance it. Plus my friend duncan351 has used fel pros forever and has no problems granted he's on 11mm head studs. But thanks for the replys. Thanks for the link on the cosworth gaskets. Might give that a shot. I might have to do another motor for that gasket.
Built ka-t
Arias 8:8:1 .20 over
K1 rods
Arp head,main,rod studs
Kelford 272's,dual valve springs
Precision 6262sp .82a/r, peakboost manifold
Cxracing fmic
Fuel injector development 2000cc
Proefi pro128, e85 flex fuel
Rb25 flywheel, dxd 350z clutch

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Post by Caveit77777 » Sun Apr 07, 2013 2:15 pm

Can you do it? Sure. Should you do it? Ehh maybe, maybe not. Like others said, you can but why risk it? Grab a cometic or a cosworth and get everything smoothed out so you can have a smooth mating surface. Either that or run 11mm headstuds instead. In a perfect world where money doesn't matter, both of those is ideally what you want.
1996 Zenki: Arias 8.8:1 Forged Pistons, AMS Sportsman Series Rods, Tial 38mm, 370cc, Fel-pro Gaskets, New Stock Crank, Nismo Thermo, Nismo Mounts, Dual Canister Exhaust, Walbro 255, T3/T4 Turbo, Mishimoto Rad, Isis Fans, HKS SSQV, SPL Tension Rods, GAB Revo Sport II Coilovers, Enthalpy Tuned... more to come

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Post by Berserker » Sun Apr 07, 2013 2:36 pm

My 500whp held for few summers, and I beat on the car alot. But once I went over 600 it started leaking. But I'm also on 11mm head bolts. I also leaned out few pulls on the highway with felpro(1 fuel pump burned out) but put in new pump and still finished the summer without any problems. If you have everything on and ready to go i would say just stick with felpro.
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Post by BoBaCk1 » Sun Apr 07, 2013 3:20 pm

Thanks berserker I was hoping you would chime in. Yeah as of right now fel pro and 10mm studs are all I have. I shoulda my surfaces prepped but maybe I can take 1200 grit sand paper and prep it or just do another block for it. Just wanted to see if it'll hold for right now. My tuner is a well respected tuner here so he said he'll just take it easy on the timing and well try and make the power with boost.
Built ka-t
Arias 8:8:1 .20 over
K1 rods
Arp head,main,rod studs
Kelford 272's,dual valve springs
Precision 6262sp .82a/r, peakboost manifold
Cxracing fmic
Fuel injector development 2000cc
Proefi pro128, e85 flex fuel
Rb25 flywheel, dxd 350z clutch

BoBaCk1
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Posts: 156
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Location: houston tx,guam

Post by BoBaCk1 » Sun Apr 07, 2013 3:20 pm

I would love to put 11mm head studs and a cosworth gasket.
Built ka-t
Arias 8:8:1 .20 over
K1 rods
Arp head,main,rod studs
Kelford 272's,dual valve springs
Precision 6262sp .82a/r, peakboost manifold
Cxracing fmic
Fuel injector development 2000cc
Proefi pro128, e85 flex fuel
Rb25 flywheel, dxd 350z clutch

Berserker
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Post by Berserker » Sun Apr 07, 2013 5:03 pm

Yeah I also have the same turbo and I made 490whp @ 20 psi if I remember correctly. And it was not aggressive timing at all.
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Post by duncan351 » Sun Apr 07, 2013 5:29 pm

I have been pushing a fel pro paper gasket for over 3 years and past 30psi with 11mm head studs. Never replaced the head gasket. Just a little secret, its all in the tune. If you are blowing headgaskets then your are detonating. Stay out of detonation, you won't blow the head gasket.
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Post by Marcus » Sun Apr 07, 2013 5:52 pm

duncan351 wrote:I have been pushing a fel pro paper gasket for over 3 years and past 30psi with 11mm head studs. Never replaced the head gasket. Just a little secret, its all in the tune. If you are blowing headgaskets then your are detonating. Stay out of detonation, you won't blow the head gasket.
Awesome to hear...for I only run a fel-pro to let me know if something is wrong. A good failsafe in my book.

BoBaCk1
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Post by BoBaCk1 » Sun Apr 07, 2013 6:26 pm

What up Duron it's chris from Houston . Thanks berserker ill be happy at 490 hp if it stayed together.
Built ka-t
Arias 8:8:1 .20 over
K1 rods
Arp head,main,rod studs
Kelford 272's,dual valve springs
Precision 6262sp .82a/r, peakboost manifold
Cxracing fmic
Fuel injector development 2000cc
Proefi pro128, e85 flex fuel
Rb25 flywheel, dxd 350z clutch

BoBaCk1
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Posts: 156
Joined: Wed May 27, 2009 7:56 pm
Location: houston tx,guam

Post by BoBaCk1 » Sun Apr 07, 2013 7:43 pm

Is anyone in here actually running a cosworth gasket?
Built ka-t
Arias 8:8:1 .20 over
K1 rods
Arp head,main,rod studs
Kelford 272's,dual valve springs
Precision 6262sp .82a/r, peakboost manifold
Cxracing fmic
Fuel injector development 2000cc
Proefi pro128, e85 flex fuel
Rb25 flywheel, dxd 350z clutch

BoBaCk1
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Posts: 156
Joined: Wed May 27, 2009 7:56 pm
Location: houston tx,guam

Post by BoBaCk1 » Sun Apr 07, 2013 7:44 pm

Are the fire ring edges folded for better sealing like their other gaskets.
Built ka-t
Arias 8:8:1 .20 over
K1 rods
Arp head,main,rod studs
Kelford 272's,dual valve springs
Precision 6262sp .82a/r, peakboost manifold
Cxracing fmic
Fuel injector development 2000cc
Proefi pro128, e85 flex fuel
Rb25 flywheel, dxd 350z clutch

Berserker
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Post by Berserker » Sun Apr 07, 2013 8:11 pm

I have a cosworth gasket in right now with new 11mm arp studs.
I had my head resurfaced again.
For the block I cleaned up and used a block sander to smooth it out. It was decked when I had machine work done.
So far so good.
608 whp @ 27.25 psi powered by Precision6262
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Post by sdaigle240 » Wed Apr 10, 2013 9:54 am

i popped the wastegate line once and was really glad a had a felpro fuse.
airman wrote:I'm all about spreadsheets. Bitches love spreadsheets.
schmauster920 wrote:I shall cast my own pistons in the sands of time, then forge them in the depths of hell.. as funds allow
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hy35 18psi Build Thread: viewtopic.php?t=38784
RIP MJL best friend of 20 years and the man who showed me 240s

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Post by mewantkouki » Sun Apr 14, 2013 5:18 pm

airman wrote:Cosworth head gaskets on sale for $110 - a steal. I bought one myself and I don't even have a 240 right now.

http://www.cosworthperformance.com/stor ... tegory=105
I tried to order on of these on April 7th. Charge never posted to my credit card. On the 10th I see some random charge for $395 to radioshack.com. This is a fraudulent website. BEWARE I received an order confirmation, but can't check the status and it says the online store has been temporary closed. Just a heads up for anyone else who thought this was too good to be true. It definitely is.

BoBaCk1
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Post by BoBaCk1 » Sun Apr 14, 2013 8:53 pm

Thanks for the heads up and sorry for the scam that happened to you. I was thinking of ordering one from here.
Built ka-t
Arias 8:8:1 .20 over
K1 rods
Arp head,main,rod studs
Kelford 272's,dual valve springs
Precision 6262sp .82a/r, peakboost manifold
Cxracing fmic
Fuel injector development 2000cc
Proefi pro128, e85 flex fuel
Rb25 flywheel, dxd 350z clutch

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airman
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Post by airman » Thu Apr 18, 2013 1:06 pm

mewantkouki wrote:
airman wrote:Cosworth head gaskets on sale for $110 - a steal. I bought one myself and I don't even have a 240 right now.

http://www.cosworthperformance.com/stor ... tegory=105
I tried to order on of these on April 7th. Charge never posted to my credit card. On the 10th I see some random charge for $395 to radioshack.com. This is a fraudulent website. BEWARE I received an order confirmation, but can't check the status and it says the online store has been temporary closed. Just a heads up for anyone else who thought this was too good to be true. It definitely is.
How about that. Explains the ~$750 that they tried to charge to Macy's and Snowboarding gear.

Oh well...WTB Cosworth gasket...need to dispute the charge for the actual head gasket though.

Edit - looks like they took that one off too. Thanks Chase :D
R.I.P. 1990 Red Hatch - DOHC 5 speed // CP 9:1 - Eagle Rods - Clevite - ARP // Holset HX35 - 20psi daily - MSPNP2
8-bit wrote:You could spend your life building a ladder to the moon, or work for 5 years to pay for a trip.

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