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 chain eating timing cover
#768404
11/29/06 02:11 PM
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Joined: Mar 2006
Posts: 42
OP
Getting the Wheeling Fever
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I've been through this before, 25-30k miles ago.
Tell me what you think of this idea. The chain is too long because the cylinder head has been shaved below minimum specs. OR the cylinder head was replaced by a PO who put on a 22RE head. At the machine shop I saw two numbers yesterday 3.90-3.950' head thickness and 3.785'.
Does anybody have the factory manual for an '86 that would have the info? [img]http://[/img]
Last edited by Buffalo86; 11/29/06 02:29 PM.
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Re: chain eating timing cover
[Re: Buffalo86]
#768405
11/29/06 02:30 PM
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Joined: Mar 2006
Posts: 42
OP
Getting the Wheeling Fever
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I just took a couple pictures but I'm not sure how to post them
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Re: chain eating timing cover
[Re: Adam F]
#768407
11/29/06 03:06 PM
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Joined: Mar 2006
Posts: 42
OP
Getting the Wheeling Fever
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Welded cover and where the chain was eating the head ![[Linked Image]](http://img206.imageshack.us/img206/8904/p4240004ay9.jpg)
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Re: chain eating timing cover
[Re: Buffalo86]
#768408
11/29/06 03:18 PM
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Joined: Mar 2006
Posts: 42
OP
Getting the Wheeling Fever
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Re: chain eating timing cover
[Re: Buffalo86]
#768409
11/29/06 06:40 PM
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Joined: Aug 2001
Posts: 2,941
J Roll Me Over
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I think it is a later head because of the kidney-shaped combustion chamber, but I am not sure.
The best/easiest way to tell is if the ports are oval or teardrop shaped... The early had oval ports, while the later had teardrop shaped ports.
Another thought... The exhaust manifold would have 1 bolt in the middle for an early head, while the later have 2 (like the pic).
"A young man who does not have what it takes to perform military service is not likely to have what it takes to make a living." - John F. Kennedy
Proud owner of an 88 Montero (with a blown engine).
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Re: chain eating timing cover
[Re: Buffalo86]
#768410
11/29/06 08:08 PM
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Joined: Nov 1999
Posts: 1,049
Body Damage is Cool
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Does anybody have the factory manual for an '86 that would have the info?
If I am not mistaken, the 86 block and head is the same whether 22R or 22RE. Must have too much shaved off. Danny look here engnbldr.com
Last edited by toyrunner; 11/29/06 08:12 PM.
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Re: chain eating timing cover
[Re: toyrunner]
#768411
11/29/06 08:46 PM
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Joined: Aug 2004
Posts: 669
Rock Warrior
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yeah, 22r and 22re does not matter.
the only difference in height and combustion chamber is pre '85, and '85+.
How are the chain guides and tensioner?
Last edited by eightyeight; 11/29/06 08:47 PM.
-matt
-'88 toy x-cab, SAS, chevys, gears, lockers, free tires, dented body mod.
-'87 4runner, bone stock DD
"It's OK to do stupid things, as long as you are not stupid about it."
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Re: chain eating timing cover
[Re: Buffalo86]
#768412
11/29/06 08:56 PM
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Joined: Oct 2000
Posts: 669
Rock Warrior
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I've been through this before, 25-30k miles ago.
Tell me what you think of this idea. The chain is too long because the cylinder head has been shaved below minimum specs. OR the cylinder head was replaced by a PO who put on a 22RE head. At the machine shop I saw two numbers yesterday 3.90-3.950' head thickness and 3.785'.
There are two versions of timing chains. The head could be shaved too much. The block could be decked too much. Could be an incorrect head, as you've mentioned... You need to figure you which block/head combo you have as well as measure your timing chain.
22REturbo.net 1988 4Runner 22RTE core, turbocharged, megasquirted...
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Re: chain eating timing cover
[Re: eightyeight]
#768413
11/30/06 06:09 PM
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Joined: Mar 2006
Posts: 42
OP
Getting the Wheeling Fever
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yeah, 22r and 22re does not matter.
the only difference in height and combustion chamber is pre '85, and '85+.
How are the chain guides and tensioner? They were shot. I went and bought everything. new timing chain set. new gasket set. also a 0.02 steel shim. I'm putting the thing back together now.
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![[Linked Image]](http://img143.imageshack.us/img143/229/p4240006va0.jpg)
