NEWB, FIRST TIME 7MGTE REBUILD..NEED HELP

M

mk3some

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Dec 27, 2005
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buffalo
ok so heres the story, had some block work done after i blew the head gasket, there was excessive cylinder wear so i had the block sleeved...Ok the block was decked etc...
After assembly with a rebuilt head off ebay and using arp head studs also w/ cometic gasket, pressurize coolant system and found leak from head gasket..
Absolutely no seal between head and block..WTF...
OK so after doing a bit more research saw that the rear timing cover must be decked with the block or otherwise the head would be resting on that ledge instead of the block...
MY QUESTION...does the rear cover need to be at the same exact level as the block? in other words do i have to pull the motor again to get the block decked with this thing on it or can i just take off the cover and grind it down???
 
Nick M

Nick M

Black Rifles Matter
Sep 9, 2005
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You need to recheck flatness now. You bolted the head down when it wasn't level.

You likely can not just put it back on. Take measurements.
 
M

mk3some

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Dec 27, 2005
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buffalo
thanx for not answering my question...does the timing cover have to be ground down to the same exact level as the block or no???
it makes no seal there correct??
 
Mrbaboon

Mrbaboon

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Jul 13, 2006
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If you didnt machine it with the front cover you have to either:


A) find a robot-like machinist that could pull off milling it.

And the more likely yet correct option:

B) Pull the motor, you fucked up, likely you will not get a good seal and will have to buy a new metal head gasket, since you compressed it onto an uneven surface, likely bending it.


This situation screams all kinds of bad.

Edit: Don't give nick shit about not answering your question. Your initial post was confusing and unorganized.
 
s383mmber1

s383mmber1

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Oct 31, 2005
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mk3some said:
thanx for not answering my question...does the timing cover have to be ground down to the same exact level as the block or no???
it makes no seal there correct??
Click to expand...

Its not going to matter at all if the timing covers ground down or not, if your block is not flat!

Jeez, learn how to spell! I didn't think people still spelled "thanks" as "thanx"

Be respectful, and your questions will be answered.
 
M

mk3some

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Dec 27, 2005
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buffalo
IJ. said:
You had it sleeved? (do you mean bored?)
Click to expand...

sleeved 3 of the cylinders because of the amount of deep pitting of the walls...basically the machinest WAAY over bores the cylinder to fit a sleeve, aka, new cylinder...

and guys listen, im sorry i came off like an a$%hole, im obviously pissed off about this...
thanks for the advice.

I am still confused tho to be honest, does the rear timing cover make a seal with the head? from what i can see on the car, the HG doesn't look like it protrudes far enough out to meet with the top of the reartiming cover...
 
Mrbaboon

Mrbaboon

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Jul 13, 2006
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mk3some said:
IJ. said:
You had it sleeved? (do you mean bored?)
Click to expand...

sleeved 3 of the cylinders because of the amount of deep pitting of the walls...basically the machinest WAAY over bores the cylinder to fit a sleeve, aka, new cylinder...

and guys listen, im sorry i came off like an a$%hole, im obviously pissed off about this...
thanks for the advice.

I am still confused tho to be honest, does the rear timing cover make a seal with the head? from what i can see on the car, the HG doesn't look like it protrudes far enough out to meet with the top of the reartiming cover...
Click to expand...


The head touches it.

It needs to be the same level or you will have leaks like there is no tomorrow. You just better hope you didnt warp your head torquing it to an uneven surface like that...
 
xarewhyayen

xarewhyayen

276 whp - 324 tq @ 13psi
Oct 3, 2005
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Philly
IJ. said:
As a performance Build the block is now junk......
Click to expand...

thats what i was thinking, best off starting with another block...and possibly head if that got warped. the thin walls of the 7m shouldnt be overbored like that and only a couple cyl. sleeved... seems like a bunch of sloppy decisions by the machinist. Id say your best bet is to get a used block and start over but do your research and know what you need before you hit up the machine shop again. Good luck
 
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