Using a wider metal headgasket? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

IchigoMae · 02-01-2007, 10:05 PM

So i bought a cometic headgasket on ebay cheap $50. I blew mine and this was too much of a deal to miss. Thing is, its a 91mm .040". Will it be ok to throw it in the KA with out having to bore it out? thanks

JDMClifford · 02-02-2007, 01:25 AM

from what ive read it works, dont quote me on that ide do more reasearch on it.

steve shadows · 02-02-2007, 04:35 PM

cometic is crap

if you really compare it to any other one.

Make sure its not more than 1 mm over sized.

*NemeGuero* · 02-02-2007, 11:56 PM

^ all the KA-T guys like the cometic. I'm using mine and I don't have any issues.

HalveBlue · 02-03-2007, 01:10 AM

Cometic head gaskets are fine as long as you're not pushing crazy boost.

Somone a while back posted a picture of their Cometic HG and it looked all tore up.

If you're planning on running NA, stock boost, or only slightly over stock, a Cometic HG should be fine.

FWIW, I run a Cometic head gasket and haven't had any problems yet.

GSXRJJordan · 02-03-2007, 05:59 AM

.040 over is too big IMHO, but I've heard Cometics work best about .5mm too big. I'd say don't use it, and get a better one, or at least a Cometic that fits.

*NemeGuero* · 02-03-2007, 11:43 AM

Yah why you would buy an oversized head gasket on a stock bore engine is beyond me.

02-01-2007, 10:05 PM	#1
IchigoMae Zilvia Junkie Join Date: Dec 2002 Location: socal Age: 41 Posts: 353 Trader Rating: (4) Feedback Score: 4 reviews	Using a wider metal headgasket? So i bought a cometic headgasket on ebay cheap $50. I blew mine and this was too much of a deal to miss. Thing is, its a 91mm .040". Will it be ok to throw it in the KA with out having to bore it out? thanks __________________

02-02-2007, 01:25 AM	#2
JDMClifford Zilvia Junkie Join Date: Nov 2006 Location: Santa Cruz Posts: 376 Trader Rating: (0) Feedback Score: 0 reviews	from what ive read it works, dont quote me on that ide do more reasearch on it. __________________ Parking lot pimping

02-02-2007, 04:35 PM	#3
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	cometic is crap if you really compare it to any other one. Make sure its not more than 1 mm over sized. __________________ Like Me on FaceBook !

02-02-2007, 11:56 PM	#4
NemeGuero No more nissan. Join Date: Jan 2003 Location: RAIN, Washington. Age: 40 Posts: 8,132 Trader Rating: (10) Rides Gallery: NemeGuero Feedback Score: 10 reviews	^ all the KA-T guys like the cometic. I'm using mine and I don't have any issues. __________________

02-03-2007, 05:59 AM	#6
GSXRJJordan Post Whore! Join Date: May 2006 Location: San Diego, CA Posts: 9,135 Trader Rating: (19) Rides Gallery: GSXRJJordan Feedback Score: 19 reviews	.040 over is too big IMHO, but I've heard Cometics work best about .5mm too big. I'd say don't use it, and get a better one, or at least a Cometic that fits. __________________ Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com

02-03-2007, 01:10 AM	#5
HalveBlue Zilvia FREAK! Join Date: Mar 2004 Location: I'm somewhere where I don't know where I am! Posts: 1,549 Trader Rating: (0) Feedback Score: 0 reviews	Cometic head gaskets are fine as long as you're not pushing crazy boost. Somone a while back posted a picture of their Cometic HG and it looked all tore up. If you're planning on running NA, stock boost, or only slightly over stock, a Cometic HG should be fine. FWIW, I run a Cometic head gasket and haven't had any problems yet.

02-03-2007, 11:43 AM	#7
NemeGuero No more nissan. Join Date: Jan 2003 Location: RAIN, Washington. Age: 40 Posts: 8,132 Trader Rating: (10) Rides Gallery: NemeGuero Feedback Score: 10 reviews	Yah why you would buy an oversized head gasket on a stock bore engine is beyond me. __________________