warped or not - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

180ways2slide · 04-18-2009, 06:55 PM

my buddy has an det with a power enterprise metal headgasket. he removed the head to put on a built head but the sale fell threw. now when he puts back on the metal hg he uses copper spray bu.t torques the head down in wrong order.did he damage the head or can he just loosen everything and re torque the head..

also he never had an over heating problem or any thing, the head was just taken off because he thought he was getting a built head. i told him to loosen it and re torque i wasnt sure if the head could get warped like that.. thanks

*fliprayzin240sx* · 04-19-2009, 02:41 AM

I dont know about it getting warped because its not torqued properly, I'd be more worried about it leaking.

GSXRJJordan · 04-19-2009, 03:07 AM

Only one way to find out lol.

Pull the head off, reseat, retorque (in order), and run that bitch.

dOMEmE · 04-20-2009, 01:34 AM

Quote:

Originally Posted by GSXRJJordan

Pull the head off, reseat, retorque (in order), and run that bitch.

yup.......only way to find out for sure indeed.

*handinpants* · 04-20-2009, 05:34 PM

pull it off and lay a straight edge down and measure... do a google search on how to check a head for warpage, and you buddy is an idiot, let him know that 10 times

moses · 04-20-2009, 07:26 PM

I might have some bad news. I was one of the idiots that torqued on the head bolts backwords. I just loosened them up and torqued them down. I drove on them for about 250 miles then went to go get it dynoed. I ran it hard on a dyno with no problems but when I ran against a vette later that night I suddenly lost compression in all 4 cylinders. It looked like I was getting bad detonation but I was not able to open it and look into it because I got deployed to Iraq. It was weird because there was no leaks anywhere so i dont really have a clue what it was.
If there is a way to check for head warpage I would do it.

*fliprayzin240sx* · 04-20-2009, 08:10 PM

Compression check before anything else...

zylvia213 · 04-20-2009, 08:35 PM

Yea you can check with a straight edge or one of them fancy rulers (dont know the proper name) place the head on a flat surface you should be able to tell if its uneven or warped. Or if your not 100% sure take it to a shop have them check. And another thing there is a torque sequence. When torquing the head you start from the inside out and also when removing the head it has its sequence from out to in. So if you just loosen the bolts with out using the sequence you my friend F'd up. It's all in the FSM

04-18-2009, 06:55 PM	#1
180ways2slide Leaky Injector Join Date: Apr 2007 Location: new york Age: 41 Posts: 125 Trader Rating: (0) Feedback Score: 0 reviews	warped or not my buddy has an det with a power enterprise metal headgasket. he removed the head to put on a built head but the sale fell threw. now when he puts back on the metal hg he uses copper spray bu.t torques the head down in wrong order.did he damage the head or can he just loosen everything and re torque the head.. also he never had an over heating problem or any thing, the head was just taken off because he thought he was getting a built head. i told him to loosen it and re torque i wasnt sure if the head could get warped like that.. thanks

04-19-2009, 02:41 AM	#2
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	I dont know about it getting warped because its not torqued properly, I'd be more worried about it leaking. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

04-19-2009, 03:07 AM	#3
GSXRJJordan Post Whore! Join Date: May 2006 Location: San Diego, CA Posts: 9,135 Trader Rating: (19) Rides Gallery: GSXRJJordan Feedback Score: 19 reviews	Only one way to find out lol. Pull the head off, reseat, retorque (in order), and run that bitch. __________________ Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com

04-20-2009, 07:26 PM	#6
moses Zilvia Junkie Join Date: Mar 2005 Location: Jacksonville, ar Age: 38 Posts: 555 Trader Rating: (2) Rides Gallery: moses Feedback Score: 2 reviews	I might have some bad news. I was one of the idiots that torqued on the head bolts backwords. I just loosened them up and torqued them down. I drove on them for about 250 miles then went to go get it dynoed. I ran it hard on a dyno with no problems but when I ran against a vette later that night I suddenly lost compression in all 4 cylinders. It looked like I was getting bad detonation but I was not able to open it and look into it because I got deployed to Iraq. It was weird because there was no leaks anywhere so i dont really have a clue what it was. If there is a way to check for head warpage I would do it. __________________ Thats what I said

04-20-2009, 08:10 PM	#7
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Compression check before anything else... __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

04-20-2009, 05:34 PM	#5
handinpants FreshColdBeer.com Join Date: Feb 2008 Location: California Age: 42 Posts: 2,665 Trader Rating: (48) Rides Gallery: handinpants Feedback Score: 48 reviews	pull it off and lay a straight edge down and measure... do a google search on how to check a head for warpage, and you buddy is an idiot, let him know that 10 times

04-20-2009, 08:35 PM	#8
zylvia213 Nissanaholic! Join Date: Aug 2007 Location: LOST ANGELES Posts: 1,978 Trader Rating: (36) Rides Gallery: zylvia213 Feedback Score: 36 reviews	Yea you can check with a straight edge or one of them fancy rulers (dont know the proper name) place the head on a flat surface you should be able to tell if its uneven or warped. Or if your not 100% sure take it to a shop have them check. And another thing there is a torque sequence. When torquing the head you start from the inside out and also when removing the head it has its sequence from out to in. So if you just loosen the bolts with out using the sequence you my friend F'd up. It's all in the FSM __________________

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