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Location:
Newcastle
Registered:
September 2003
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Over tightened head = this......
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Sat, 16 April 2005 08:07
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I am in the process of doing some mods to my 7MGTE powered Cressida (bigger cooler, turbo, intake manifold, computer etc.) Before I pulled the car of the road to do these mods it was starting to develop a overheating problem being a 7M the first conclusion I come to was BHG but I checked everything ells out first and nothing fixed the problem..
So while the car is already in bits I thought it would be a good opportunity to check and replace the head-gasket.. While I was pulling of the exaust manifold I noticed a water stain down the side of the block I thought maybe the block had a crack in it and this was causing my overheating problems but wasn't 100% sure because I couldn't see a crack so I continued pulling the head off when I found this!!!!!!!!!!
The headgasket hadn't actually blown which was probably thanks to the o-ringed block but i guess that doesn't matter when there is a crack down the side of your block leaking water out..
I rang up the guy I bought the car of 2 years ago and questioned him on how tight he did up the head bolts and he told me he did some research and did them up to 90ft/lb  Toyota's specs are 60 and most people say to do them to 72 just to be safe but not bloody 90!!!!!!!!! 
So if anyone has a 7MGE or GTE block laying around please let me know as I am now on the search for a replacement
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I supported Toymods
Location:
sydney.au
Registered:
August 2002
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Re: Over tightened head = this......
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Sat, 16 April 2005 08:09
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woah!
thats nuts!
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Location:
Sydney
Registered:
April 2004
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Re: Over tightened head = this......
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Sat, 16 April 2005 08:11
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1JZ time? 
Seriously.. consider it.
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Location:
Newcastle
Registered:
September 2003
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Re: Over tightened head = this......
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Sat, 16 April 2005 08:15
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I am actually thinking about a 2JZ not a real fan of the 1J's to small..
how much could you pick up a 2JZ short block so basiclly just block and head the rest I will make up..
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I Supported Toymods
Location:
Casula
Registered:
January 2005
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Re: Over tightened head = this......
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Sat, 16 April 2005 08:18
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Fark,that's the first block I've seen crack like that.
If you where every considering an upgrade then nows the time.
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Location:
Melbourne
Registered:
May 2002
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Re: Over tightened head = this......
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Sat, 16 April 2005 09:59
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thats not over tightening thats hydraulics's, he has left oil/water in the bolt holes, done it up and POP go's the block!
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Location:
Melbourne
Registered:
May 2002
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Re: Over tightened head = this......
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Sat, 16 April 2005 10:01
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note the ammount of carbon in the bores that thing has been runing pig rich... modifications??
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I Supported Toymods
Location:
Lwr Templestowe, Melbourne
Registered:
August 2004
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Location:
Newcastle
Registered:
September 2003
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Re: Over tightened head = this......
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Sat, 16 April 2005 15:48
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Thanks for the link, pitty it is in qld.. Will see what I can find down here first..
The motor has had no mods done to it before pulling it apart and yeh I did notice ALOT of carbon in the bores!!! It was starting to blow a lil smoke on startup but never once it was running so maybe it was burnt oil rather than being to rich.. And I am thinking it is probly the turbo and not the valve stem seals as there was no oil on the tops of the valves or on the pistons when I pulled it apart but there was some oil floating around in the cooler pipes but nothing to excessive..
I am going to clean up the head tomorrow and check it for cracks and any warping fingers crossed!!
Also the idea of hydraulics does make alot more sence because I was trying to figure out how doing up the bolts to much could actually force the block apart...
Marc,
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I Supported Toymods
Location:
Lwr Templestowe, Melbourne
Registered:
August 2004
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Re: Over tightened head = this......
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Sat, 16 April 2005 22:16
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Well I was quoted $75 to send it down to Melbourne. So it'll be slightly cheaper to get it down to Sydney yeah? Didnt get it coz missus thought I ought to spend the money on something more substantial *grumbles*... her mentality was: if it aint broke, why get another one?
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Location:
Eskilstuna, Sweden
Registered:
May 2002
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Re: Over tightened head = this......
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Sun, 17 April 2005 00:55
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Man that is terminal isn't it!! I have not seen anything like it before. Thanks for the pics.
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