| Author | Topic |
|---|
Registered:
July 2002
|
|
is a 7mgte head o-ringed?
|
Wed, 29 January 2003 11:52
|
 |
i recently removed the head of my 7m , and noticed that the head is o-ringed not the block is this standard ?
if not why would the head b done and not the block?
also what tests should b carried out on tha head ? ( for leaking head gasket area specifaclly) before i put it back on?
|
|
|
Location:
Brisbane
Registered:
December 2002
|
|
Re: is a 7mgte head o-ringed?
|
Wed, 29 January 2003 11:57
|
|
|
people o ring the heads to try and stop the bhg problem. Test it for cracks and also look for any signs of how it could be warped. Block doesnt need to be o ringed as far as i know. not 100% sure tho.
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: is a 7mgte head o-ringed?
|
Wed, 29 January 2003 13:36
|
|
7M's are definitely not o-ringed from the factory. If yours has an o-ringed head, it's been modified by someone at some point.
|
|
|
Location:
North Sydney
Registered:
May 2002
|
|
Re: is a 7mgte head o-ringed?
|
Thu, 30 January 2003 08:53
|
|
You lucky bastard, if my 7mgte head was oringed i'd run more than 14psi(currently 420hp) and throw 20psi into it and crack the 500hp mark 
Got any pics of it??
|
|
|
Registered:
July 2002
|
|
Re: is a 7mgte head o-ringed?
|
Thu, 30 January 2003 10:39
|
|
i might do i took some pics with my mates dig camera over the course of rebuild so i might have one..
i do have a pic of my head gasket though i cant work out how to get it up here.... ( im no a comp friendly kinda guy)
ill find out and post some if i do!
is it likely that the head would b cracked? im sort of leaning towards this as a cause to my dramas at the moment.
what mods are good for a 7m head while there of as it looks like it mihgt b comming of again! 
|
|
|
Location:
Perth
Registered:
January 2003
|
|
Re: is a 7mgte head o-ringed?
|
Fri, 31 January 2003 19:11
|
|
|
Stock heads are not O-ringed. What kind of gasket was it using, and how tight were headbolts?
|
|
|
Registered:
July 2002
|
|
Re: is a 7mgte head o-ringed?
|
Sun, 02 February 2003 04:26
|
|
they were using a copper head gasket about 1mm , orginal bolts and i dont know how tight, but they were torqued over spec , so id say about 70Nm
they were all tight when i took them off
|
|
|
Location:
North Sydney
Registered:
May 2002
|
|
Re: is a 7mgte head o-ringed?
|
Mon, 03 February 2003 07:48
|
|
Definitely been modded then. Some pics would be really good!
You could email them to me and i could post them up.
paul.pearce@honeywell.com
|
|
|
Registered:
July 2002
|
|
Re: is a 7mgte head o-ringed?
|
Tue, 04 February 2003 01:29
|
|
big dramas! head apears to b leaking as it was before...
talking to eng reco mob who said it is a very bad idea to oring a alloy head , the head is to soft and the orings push up into the head, and when torquing them down they will tend to sqew the head. so it looks like im up foor a new head!
anyone have one worth seling? 
( im still trying to get my photos!)
|
|
|
Location:
Lost in the K hole
Registered:
May 2002
|
|
|
