Leaking Thermostat Housing
Thread Starter
Race Director
Joined: Sep 1999
Posts: 12,437
Likes: 919
From: CONCORD NC
Leaking Thermostat Housing
In probably 15 street and track engines, just had a new problem that I've never seen before. My water pump started leaking, and I'm pretty sure it is leaking around the thermostat housing. It does have a low temp thermostat in it, but I'm 100% it was torqued properly and the o-ring was intact.
Anyway, anyone ever had a problem with this. I haven't had a chance to pull it off yet, but I'm a bit boggled by it. The water temp had just hit 220 when I noticed it.
btw, stock cap, so no reason anything abnormal should have been going on with high pressures etc.
Anyway, anyone ever had a problem with this. I haven't had a chance to pull it off yet, but I'm a bit boggled by it. The water temp had just hit 220 when I noticed it.
btw, stock cap, so no reason anything abnormal should have been going on with high pressures etc.
Burning Brakes
Joined: Sep 2006
Posts: 936
Likes: 8
From: England United Kingdom
Hi mate
in my kb kit,i had just a 160* thermostat,like no housing cover.my original was the integral cover ,stat type.
so i got a cover for a 2004(they have a seperate stat ).
ok put it all together .....nice little weep,with the cooling fans on blew dex all over the place.
so drain,take off the stat cover,clean it up,dry,put some black silcon
sealant on both sides of the rubber seal.its a pita to hold the cover against the pump and do up the bolts,due to the spring on the stat.
anyways,let it sit overnight and we are cool.
bottom line ,i dont think the gasket sits that well in the area between
the cover and the pump.seems like its vee `d and may have a small gap even when the bolts are up tight.
redo yours with a nice bit of sealant and it should be fine
in my kb kit,i had just a 160* thermostat,like no housing cover.my original was the integral cover ,stat type.
so i got a cover for a 2004(they have a seperate stat ).
ok put it all together .....nice little weep,with the cooling fans on blew dex all over the place.
so drain,take off the stat cover,clean it up,dry,put some black silcon
sealant on both sides of the rubber seal.its a pita to hold the cover against the pump and do up the bolts,due to the spring on the stat.
anyways,let it sit overnight and we are cool.
bottom line ,i dont think the gasket sits that well in the area between
the cover and the pump.seems like its vee `d and may have a small gap even when the bolts are up tight.
redo yours with a nice bit of sealant and it should be fine
