Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by: KPower

.060" copper headgasket

Thread Tools
 
Search this Thread
 
Old 10-04-2017, 04:23 PM
  #1  
Junior Member
Thread Starter
 
2jz_mickey's Avatar
 
Join Date: Jul 2017
Posts: 73
Total Cats: 3
Default .060" copper headgasket

Hi guys first post here! Unfortunately my cometic mls took a dookie after 3 weeks of use. I am running 8psi right now but will be bumping up to 15 psi max later on in life. My buddy running an sr20 said he loves his copper gasket. So my question is should I get another mls from cometic or get a custom .060 copper gasket? Also what do you guys torque your gasket too? Thank you for looking guys. Looking forqard to being swayed!
2jz_mickey is offline  
Old 10-04-2017, 04:50 PM
  #2  
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 10,917
Total Cats: 2,201
Default

concealer404 is offline  
Old 10-04-2017, 04:55 PM
  #3  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

18psi is offline  
Old 10-04-2017, 05:05 PM
  #4  
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 7,325
Total Cats: 2,377
Default

OEM gaskets are good to 25psi with ARP studs. Cometics are good until the block asplodes. There was something wrong elsewhere. The likely hood that it was a design or workmanship flaw in the Cometic is about the same as winning the lotto.
Do over.
__________________


www.facebook.com/SuperMiata

949RACING.COM Home of the 6UL wheel

.31 SNR
emilio700 is offline  
Old 10-04-2017, 05:08 PM
  #5  
Junior Member
Thread Starter
 
2jz_mickey's Avatar
 
Join Date: Jul 2017
Posts: 73
Total Cats: 3
Default

Originally Posted by emilio700
OEM gaskets are good to 25psi with ARP studs. Cometics are good until the block asplodes. There was something wrong elsewhere. The likely hood that it was a design or workmanship flaw in the Cometic is about the same as winning the lotto.
Do over.
Thank you for the advice I appreciate it! Do you torque your head to factory spec or a little heavier? Thank you again?
2jz_mickey is offline  
Old 10-04-2017, 05:20 PM
  #6  
Elite Member
iTrader: (1)
 
Full_Tilt_Boogie's Avatar
 
Join Date: May 2009
Location: Jacksonville, FL
Posts: 5,155
Total Cats: 406
Default

Copper headgaskets are awesome if you plan on draining the coolant out of the engine when youre not using it
Full_Tilt_Boogie is offline  
Old 10-04-2017, 05:21 PM
  #7  
Elite Member
iTrader: (6)
 
ryansmoneypit's Avatar
 
Join Date: Feb 2013
Location: A cave in Va
Posts: 3,395
Total Cats: 456
Default

OEM bolts should use OEM torque spec. A lot of us use ARP as Emilio already stated. If you were going to buy a custom gasket, spend that cash on ARP studs instead.
ryansmoneypit is offline  
Old 10-04-2017, 05:28 PM
  #8  
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 10,917
Total Cats: 2,201
Default

Originally Posted by 2jz_mickey
Thank you for the advice I appreciate it! Do you torque your head to factory spec or a little heavier? Thank you again?
Factory bolts get torqued to __________ ftlbs.
ARPs get torqued to _________ ftlbs.


Fill in the blanks with what you think would be logical.
concealer404 is offline  
Old 10-04-2017, 05:32 PM
  #9  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

the specs are top secret. they could never be found by doing any sort of basic search
18psi is offline  
Old 10-04-2017, 05:55 PM
  #10  
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 7,325
Total Cats: 2,377
Default

OEM studs torque to OEM specs
ARP studs torque to ARP's specs

ITT: Radical tuning secrets revealed
__________________


www.facebook.com/SuperMiata

949RACING.COM Home of the 6UL wheel

.31 SNR
emilio700 is offline  
Old 10-04-2017, 06:05 PM
  #11  
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 10,917
Total Cats: 2,201
Default

Originally Posted by emilio700
OEM studs torque to OEM specs
ARP studs torque to ARP's specs

ITT: Radical tuning secrets revealed
I'm glad you impart so much deep knowledge to the community. It makes me feel warm and fuzzy about this morning's order.
concealer404 is offline  
Old 10-04-2017, 08:49 PM
  #12  
Former Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,099
Default

Originally Posted by concealer404
Read about 10 words of the OP, saw this photo, lol'd so hard I stopped reading. Carry on
Savington is offline  
Old 10-04-2017, 08:53 PM
  #13  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

but bro, how heavy do you torque your head?
18psi is offline  
Old 10-06-2017, 10:35 AM
  #14  
Senior Member
iTrader: (1)
 
BogusSVO's Avatar
 
Join Date: Mar 2012
Location: Pensacola Fla.
Posts: 588
Total Cats: 203
Default

Originally Posted by 18psi
but bro, how heavy do you torque your head?

I torque my factory head bolts to 110 ft/lbs ..... that answer your quest 18psi?!?!?!?!
BogusSVO is offline  
Old 10-06-2017, 10:38 AM
  #15  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

I go heavier, at 220
18psi is offline  
Old 10-06-2017, 12:35 PM
  #16  
Moderator
iTrader: (12)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 20,652
Total Cats: 3,011
Default

My ARP studs came with destructions.
sixshooter is offline  
Old 10-10-2017, 10:29 PM
  #17  
Elite Member
iTrader: (2)
 
ridethecliche's Avatar
 
Join Date: Aug 2016
Location: New Fucking Jersey
Posts: 3,890
Total Cats: 143
Default

Originally Posted by sixshooter
My ARP studs came with destructions.
You've been on fire lately.
ridethecliche is offline  
Old 10-11-2017, 12:38 AM
  #18  
Moderator
iTrader: (12)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 20,652
Total Cats: 3,011
Default

Originally Posted by ridethecliche
You've been on fire lately.
Yeah, but the penicillin cleared it right up.
sixshooter is offline  
Old 06-06-2018, 06:39 PM
  #19  
Junior Member
Thread Starter
 
2jz_mickey's Avatar
 
Join Date: Jul 2017
Posts: 73
Total Cats: 3
Default

So I went with a cometic Mls and warranteed my Arp studs. The issue was in the fact that the shop doing the work torqued the head to 40 ftlbs which they insisted was the factory spec. Sorry to take so long to update! Redid all the work and just passed the breakin period on this motor. Because of this scare I have lost any confidence in my motor and I'm having another motor built by a different shop. Thanks for all the help and the MT.NET styled welcome! Loving this site!
2jz_mickey is offline  
Old 06-06-2018, 09:46 PM
  #20  
Elite Member
iTrader: (6)
 
ryansmoneypit's Avatar
 
Join Date: Feb 2013
Location: A cave in Va
Posts: 3,395
Total Cats: 456
Default

Crazy. Isn't 40 even less than OEM spec?
ryansmoneypit is offline  


Quick Reply: .060" copper headgasket



All times are GMT -4. The time now is 08:34 AM.