Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Cracked head 3vze

Old 06-13-2019, 07:39 AM
  #1  
Registered User
Thread Starter
 
Dilomski's Avatar
 
Join Date: Oct 2018
Posts: 35
Received 0 Likes on 0 Posts
Cracked head 3vze

Hello again all.

My trouble with the 3vze continue. 91 4runner, 5 speed. Begun a complete rebuild of the engine, all cylinders this time were around 85 psi, car barery run. Timing was two teeth before on the crankshaft. The worst thing so far is that the left head is cracked. What should I do? Replace only one head, or both, or? I have an offer for a head, dude says it really doesnt matter which head is left and right, also he thinks they are interchangeable, but is this really true?

Thanks for every comment, guys!
Dilomski is offline  
Old 06-13-2019, 08:47 AM
  #2  
Registered User
iTrader: (8)
 
arlindsay1992's Avatar
 
Join Date: May 2011
Location: Southeast Virginia
Posts: 1,133
Likes: 0
Received 41 Likes on 34 Posts
The driver's side front cam cap has the mount for the distributor. You can't just move cam caps to a different head, they are machined to match. Seems to me you need a driver's side (left) head.
arlindsay1992 is offline  
The following users liked this post:
Dilomski (06-13-2019)
Old 06-13-2019, 10:56 AM
  #3  
Registered User
 
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 6,685
Likes: 0
Received 126 Likes on 111 Posts
How do you know the head is cracked? If the crack is visible, it is possible (but not a given) that the other head has a harder-to-see crack

RockAuto has (bare!) cylinder heads for $305. You can use that number to evaluate alternatives.
scope103 is offline  
Old 06-13-2019, 11:05 AM
  #4  
Registered User
Thread Starter
 
Dilomski's Avatar
 
Join Date: Oct 2018
Posts: 35
Received 0 Likes on 0 Posts
Pressure tested with liquid, producing constant air bubbles. So you say its best to replace both heads? The other head will be checked once more to double check its condition.
Dilomski is offline  
Old 06-13-2019, 11:25 AM
  #5  
Registered User
 
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 6,685
Likes: 0
Received 126 Likes on 111 Posts
I no authority on this, but if your existing head passed reasonable tests (pressure test, flatness, valve-seat condition), I'd keep it. Toyota heads don't really "wear out," something happened to your head to crack it. Unless you know the engine was WAY overheated, whatever it was could easily have happened to just one head.
scope103 is offline  
The following users liked this post:
Dilomski (06-13-2019)
Old 06-15-2019, 11:39 AM
  #6  
Registered User
Thread Starter
 
Dilomski's Avatar
 
Join Date: Oct 2018
Posts: 35
Received 0 Likes on 0 Posts
Thanks Arlindsay, Scope. I found a used head in good condition that will order on monday, then pressure test and everything. If its good will put it on. So far no visible damage to the rest of the engine, meaning the crankshaft and so on. I hope this engine will be rebuild right this time, with special attention to the cooling system, so I could avoid overheating issues in the future. Crossing fingers, anyway

Last edited by Dilomski; 06-15-2019 at 11:40 AM. Reason: typing fail
Dilomski is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
lectric80
86-95 Trucks & 4Runners
3
03-27-2012 08:29 PM
msvphoto
93-98 T100s
4
01-13-2011 03:35 PM
myster
86-95 Trucks & 4Runners
22
06-10-2009 03:06 PM
Fo by Fo
86-95 Trucks & 4Runners
7
12-21-2008 02:31 PM
StevenR
Maintenance & Repair Archives
5
06-14-2005 09:49 AM


Thread Tools
Search this Thread
Quick Reply: Cracked head 3vze


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: