Big Boost
03-28-2002, 10:24 AM
My engine will be done in about three weeks, so I need to purchase the absolute best steel head gasket. HKS and Greddy came to my mind first. I researched and found one from Tomei as well. Louis sells the Cometic unit. I simply want the best performing unit available. They don't call me "Big Boost" for nothin'. I want to do this right the first time or everyone will be calling me "Big Bang"!
I've seen the "stopper style" head gaskets by HKS and although pricey, I've been highly recommended to buy that one. Please provide me with just the facts. Thanks in advance.
Rob
Big Boost
03-30-2002, 09:43 PM
Anybody? Anybody? Ferris? Ferris Bueler?
TurboMiata
03-31-2002, 03:30 PM
Buler......Buler.......Buler...................... . :D
Jackson Diamond
03-31-2002, 10:48 PM
YO, just hondabond that shit:D :D :D :cool:
SENTRASER
04-01-2002, 12:07 AM
Just use the OE nissan head gasktet....or Nissan motor sports sells a "turbo head gasket"...I've herd of HKS head gaskets blowing on a high boost 300zx, then they went back to stock and it was fine....
~Ryan
Big Boost
04-01-2002, 10:41 AM
The stock head gasket will absolutely not be able to properly seal the amount of cylinder pressure this engine will see. The block will be O-ringed for an added safety measure. The gasket will have to be a steel unit. I just need to know which one between the HKS, Greddy (Trust), Tomei or Toda is the best one to use.
1fastser
12-11-2002, 06:35 PM
FYI, the stock OE head gasket has held 400+ HP!
SENTRASER
12-11-2002, 06:53 PM
Yup...stock headgasket will hold up to 20psi of boost...
muleman
12-11-2002, 10:24 PM
big boost ,don't run stock it is not fine for your motor (this dude doesn't have a stock det).My buddy has a sr20det & run's 28 psi and had a greddy gasket no problems but the price.We just did a 3 angle valve job and now we switched to cometic also nice.His motor has gti-r crank, JE pistons,cunigham rods and ran 28psi for over a year with no problems.Hopful the cometic is also good good luck
muleman
12-11-2002, 10:36 PM
The only diffrent I can see between the cometic and greddy is in sum of the water ports around the bore the cometic has smaller holes so the water whould be more limited in flow as the greddy has all the water ports the same (open all the way) I was told that the smaller the hole's are to slow the water flow down to help cool it better and the bigger hole in the greddy will flow to fast to cool the head down as well as the cometic
1fastser
12-11-2002, 10:37 PM
Granted, I don't know your setup. Enlighten me.
I'm also looking for an aftermarket HG. I'm looking for a Greddy 1.4mm...doesn't have to be Greddy but it has to be 1.4mm to be back at my desired height and to not screw up cam timing, quench, yada, yada, yada.
Louis Anaya has the cometic's instock...don't think he has 87mm (my application).
laterz...Jody
muleman
12-11-2002, 10:56 PM
I think big boost is building a 10.4-1 motor for turbo I was going to buy his motor. ps my buddy has a 86mm cometic for cheap brand new
1fastser
12-11-2002, 11:02 PM
Oh yeah, 87mm bore.
10.4:1 :eek: Water injection? I'll be running over 20psi but with 300ztt pistons and not near that kind of compression.
laterz...Jody
muleman
12-11-2002, 11:08 PM
well I will be running about 30psi with the cometic and 8.5-1 areis piston and eagle rods.I hope it hold good lol
1fastser
12-11-2002, 11:11 PM
You running water injection? Just wondering what your setup will be...details! PM if you like.
laterz...Jody
muleman
12-11-2002, 11:22 PM
http://www.sr20deforum.com/showthread.php?s=&threadid=19917 here is big boost motor