Blown head gasket? - Page 2

h8z2luze · 05-26-2006, 09:11 PM

i will have to do it myself. I couldnt even imagine how much it would cost to have a mechanic do it. I have a lot of experience but mostly with old domestics. I had a 89 accord that i put a head gasket on and changed out the tranny and a few other minor things and I rebuilt the izusu motor in my LUV but other than that I havent worked on any imports. I will probably be on here a lot during this process. I just took the intake and valve covers off. The bolts wernt even tight on the valve covers. There is white gunk (water) all in there. not good. How much do you guys usually see the head gasket kit for? Plus bolts. I priced them at autozone, kragen and rebies and they ran from 150-350 i almost shit my pants. Thanks again for the help.

f00g00 · 05-30-2006, 10:55 AM

The allen bolts Are your head bolts, they are 10mm so you will need a 10mm 3/8 drive and maybe two short extentions or one at least 6" to go with the torque wrench. The procedures for taking the head off can be found here.
http://groundsky.co.nz/techinfo/TSRM/03_EM.pdf
page EM-32.
I re-torqued my head bolts last week and had to hook my battery back up and crank the engine a couple of times because the cams were interfering with some of the bolts.
The 7M engines are supposed to be non interfering engines so turning one cam at a time shouldn't be a problem.

h8z2luze · 05-31-2006, 03:26 AM

I cant open that. I got the haynes manual. But i didnt see any specific instructions for taking them off. I have the allen wrench but what about the bolts down below the cams. I think they are holding the cams to the head. Do i need to take those off? Not the caps.

razerback121 · 05-31-2006, 04:20 AM

Hah! i just did that 2 months ago, have all the parts it took! You in the bay? 1 crtitcal thing you need to to do is.......replace every hose you take off, it wont even cost that much, and it good you good piece of mind. I didnt do this and now, 2 months later i've replace about 6 coolant lines that have decided to leak or blow. *head is very very heavy*(theres also a coolant line right in the rear of the exhaust side, hard to spot specially if your eager to get it off). To loosen the timing belt, theres a pully below centered between the gears, 14mm will kill it nicely.

h8z2luze · 05-30-2006, 01:06 AM

Ok I have it all torn apart except the head. For the head bolts is there a certain socket I need? None of mine will fit down in there. Also what about the cams. How do they come out? I took the timing belt off (the hard way) not thinking about trying to take off the cam gear. Does it hurt the motor to turn one cam and not the other? First time I have worked on a DOHC motor. Have I got in over my head? Well im there now so i ask for your help. Also in the middle of the head there are allen style bolts i have the wrench for them but what are they? Thanks again guys for helpin me out. I cant wait to get this thing on the road. I have never even got to drive it yet.

Rommy · 05-30-2006, 01:20 AM

Quote:

Originally Posted by h8z2luze

Hello, I have a 89 Supra N/T. I got it from an auction. The guy said there was nothing wrong with it but there is. It misses really bad. When I pulled the plug wires off the valley where the plugs screw into the head was full of oil. I have never worked on one of there straight sixes before. What does this mean? I hear it could be a blown head gasket or a craked head. How mush is a rebuld kit for these? Thanks in advance.

Just damaged valve cover gaskets. Mine has the same problem. As for the missing, try changing the plugs while you're changing the gaskets. Worked for me! (Should be $20 for the gaskets, $15 for the plugs, just about) Note, a mechanic should be able to do this for $120, parts included.

h8z2luze · 05-30-2006, 04:42 AM

I already have it stripped down to the head. I might as well just replace the head gasket. and everything else lol.

05-30-2006, 10:55 AM	#2
f00g00 12psi boost Join Date: Aug 2005 Location: Kuwait Posts: 292	Allen bolts The allen bolts Are your head bolts, they are 10mm so you will need a 10mm 3/8 drive and maybe two short extentions or one at least 6" to go with the torque wrench. The procedures for taking the head off can be found here. http://groundsky.co.nz/techinfo/TSRM/03_EM.pdf page EM-32. I re-torqued my head bolts last week and had to hook my battery back up and crank the engine a couple of times because the cams were interfering with some of the bolts. The 7M engines are supposed to be non interfering engines so turning one cam at a time shouldn't be a problem.

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05-26-2006, 09:11 PM	#1
h8z2luze 12psi boost Join Date: May 2006 Location: Nor*Cal Posts: 338	i will have to do it myself. I couldnt even imagine how much it would cost to have a mechanic do it. I have a lot of experience but mostly with old domestics. I had a 89 accord that i put a head gasket on and changed out the tranny and a few other minor things and I rebuilt the izusu motor in my LUV but other than that I havent worked on any imports. I will probably be on here a lot during this process. I just took the intake and valve covers off. The bolts wernt even tight on the valve covers. There is white gunk (water) all in there. not good. How much do you guys usually see the head gasket kit for? Plus bolts. I priced them at autozone, kragen and rebies and they ran from 150-350 i almost shit my pants. Thanks again for the help.

05-31-2006, 03:26 AM	#3
h8z2luze 12psi boost Join Date: May 2006 Location: Nor*Cal Posts: 338	I cant open that. I got the haynes manual. But i didnt see any specific instructions for taking them off. I have the allen wrench but what about the bolts down below the cams. I think they are holding the cams to the head. Do i need to take those off? Not the caps.

05-31-2006, 04:20 AM	#4
razerback121 Stock Join Date: Mar 2006 Location: Fremont Posts: 11	Hah! i just did that 2 months ago, have all the parts it took! You in the bay? 1 crtitcal thing you need to to do is.......replace every hose you take off, it wont even cost that much, and it good you good piece of mind. I didnt do this and now, 2 months later i've replace about 6 coolant lines that have decided to leak or blow. head is very very heavy(theres also a coolant line right in the rear of the exhaust side, hard to spot specially if your eager to get it off). To loosen the timing belt, theres a pully below centered between the gears, 14mm will kill it nicely.

05-30-2006, 01:06 AM	#5
h8z2luze 12psi boost Join Date: May 2006 Location: Nor*Cal Posts: 338	Ok I have it all torn apart except the head. For the head bolts is there a certain socket I need? None of mine will fit down in there. Also what about the cams. How do they come out? I took the timing belt off (the hard way) not thinking about trying to take off the cam gear. Does it hurt the motor to turn one cam and not the other? First time I have worked on a DOHC motor. Have I got in over my head? Well im there now so i ask for your help. Also in the middle of the head there are allen style bolts i have the wrench for them but what are they? Thanks again guys for helpin me out. I cant wait to get this thing on the road. I have never even got to drive it yet.

05-30-2006, 04:42 AM	#7
h8z2luze 12psi boost Join Date: May 2006 Location: Nor*Cal Posts: 338	I already have it stripped down to the head. I might as well just replace the head gasket. and everything else lol.