Signs point to head gasket? 87 22re

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01-24-2014 | 03:08 PM

#21

RAD4Runner

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Joined: Mar 2012

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Quote:

Originally Posted by yotarob2005

It might well be just the theromostat. Toyoya sells a dual stage stat and 4crawler has a write up on drilling a small hole in the plate of the thermostat to fix the issue. Was the heater on?

http://www.4crawler.com/4x4/CheapTri...tml#Thermostat

Quote:

Originally Posted by snobdds

I have found start with a small hole, < 1/8, ... It took longer to warm up, but I didn't mind too much.

Quote:

Originally Posted by rattlewagon

...I drilled 2 7/32 holes in it, I didnt want to have to do it again...
...The truck takes longer to heat up, but I guess its better than over heating...

Quote:

Originally Posted by henrypaz

Hi Fellas! I have taken the habit of drilling that small hole some of you guys have suggested doing....

Before The Truck Shop rebuilt my engine after a blown HG, owner, James mentioned the "hole" trick. However, instead of drilling a hole, they just remove the jiggle valve. He used to race 22RE's in Baja. If that trick worked in Baja, it should work in cooler climates, and considering the many believers in the small bypass method, I agreed to have that done on my T-Stat. Yep, takes longer to warm up, so I just start, let her idle as I adjust, mirror, pick my radio station, have a sip of my coffee... before I drive off.

Quote:

If you ever hear a pounding "boom" type noise as your going along, sorta like running over a brick in the road, it could be the sound of a failed thermo talkin' to ye! Steam will expand a bubble that will collapse with a bang when it meets a cool spot in the system. Watch out boys!

Good tip. Thanks!

Last edited by RAD4Runner; 01-24-2014 at 03:11 PM.