big87toyota

I have a 87 4x4 with the 22r I have compleatly built this motor from ground up all new been running for bout two years and recently its been over heating after quite a long drive and every time it over heats it takes a gallon of water but I have no water leakes and I have put a new radiator new water pump thermosat I can't figure this out my compresion on each cylindar is 125 also is that low and where is my water going please help

yayfortrees

Please search, there are at least 2 or 3 threads that are identical to this. (Probably dozens)

Also, grab yourself a manual. It is the most reliable source of information, and the fastest way to get it. You can get it from here, I hope you aren't using dial-up:

http://ncttora.com/fsm/1985/1985FSM_OCR.pdf

And yes, 125 PSI is low.

Welcome to YT.

Lumpy

Yes, search around a bit. But I'll help ya out a bit. Sounds like the HG is going/has gone/is on it's way out. Click on the FSM in my sig for help.

big87toyota

alright thanks i found some other forums on my issue

offroad1990

hey where did u find the help with your water disaperence?? cause im haveing the EXACT same problem with my 89 V6 4runner. .

LITLRED

You mean HG?

DoveGray85

Same here. I have to add water every time I drive my truck. I'm pretty sure it's the head gasket. I also see white smoke coming out the tail pipe sometimes.

That's a bummer you only got 2 years out of the motor before having problems, big 87. Maybe try re-torquing the head bolts?

I'm building a motor right now, out of a 2nd block I picked up. My plan is to use a mls head gasket and ARP head studs. I'm also having the block decked and buying a new head. I hope to avoid head gasket problems. There are constantly threads on here about blown head gaskets.

Lumpy

Yessir, fixed...I do that sometimes...

offroad1990

thats what i thought it woulb be, the head gasket, but i doesent leak water from nowhere at all,, so wouldnt it leak if it was the HG??

camo31_10.50

mine doesn't leak water anywhere..but i'm putting out a HUGE cloud of White smoke..and the overflow tank is full, and overflowing actually.

i'm about 95% sure it's my headgasket..i only got 9500-10,000 miles on my motor