Toyota Supra Forums! Join the Supra forum! - Mechanic says it’s not the head gasket.

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- - Mechanic says it’s not the head gasket. (http://www.toyota-supra.info/forums/mkiii-supra/9521-mechanic-says-it-s-not-the-head-gasket.html)

An overflowing coolant recovery bottle = a blown head gasket. Its a sign that excessive pressure is entering the cooling system, and can you guess where that excessive pressure is coming from? I don't care who says otherwise. Come down to my shop and I'll pull your head off in 3 hours and show you your mangled, disfigured head gasket.

safe ?

you might pop a hose here and there but you can nurse it along for a long time

You will also erode the coolant passages in the cylinder head from the corrosive exhaust gases entering the cooling system. And the water pump impeller will erode away as well. This is if you drive the car with a BHG for ANY length of time. If it gets really bad and coolant starts to enter the crankcase you will also ruin the rod bearings.

And even worse Hydraulic your motor. Thought I had a bad battery, but Water doesn't compress too well.

Well I’ve been driving it all winter and its still doing fine. The only time the bottle was going over was in the summer on hot days. I plan to have my spare motor rebuilt this fall and will pop it in over the winter. Does anyone know if a BHG will cause your heat to not work? My heater only works on warmer days or when the car is at speed on the highway. The second I let off the gas it blows cold on me. It will not blow hot at idle unless it’s a warm day. The blower motor is fine.

you might wana check or search on the frequently asked questions....good luck......you'll be amazed at how much information has allready been asked and answered many times..

Well it looks like I was nursing a bad head gasket the whole time. It finally blew two days ago. She started bellowing white smoke and started running a little rough. I parked her in the garage and haven’t started her since. I have a few questions for the HG pros out there who have done this job before. I have never worked on major engine components on this type of car before but I’m up for the challenge. That being said I have found a few sources for gaskets and was hoping some of you could point me down the right path. From what I have read most people go straight to there Toyota dealers but the one I usually deal with here is very pricey on parts. I found a few external web based companies that offer gasket kits made by Felpro and Ishino. I was contemplating the Felpro kit. Has anyone ever used this one before? Any advice on it or should I just buy it from the dealer? I want to make sure all the gaskets fit right and I have heard stories about the Valve cover gaskets on some sets not fitting properly.

http://www.toyotapartscheap.com/

http://www.tpartswarehouse.com/catalog/?N=11790+4294966978+1725+11921+5774

http://www.innerauto.com/store/?D=toyota+supra&Ntt=toyota+supra&Dx=mode+matchallp artial&Ntk=Main&Ntx=mode+matchallpartial&N=4294966 978+4294967259+2471&Nty=1

If your Supra is a turbo you are in for a LONG workout. I'd put the car on a trailer and get it to "IHateHacks;s" garage now. It took me a month to replace the HG on a 1990 turbo, and I'd never do it again. I somehow damaged a nerve in my leg and spent the next YEAR on painkillers.

Sorry to hear about the leg. She’s not a Turbo and I have all the time in the world to work on her. She’s my driver but I only use it on Fridays and my wife can cover me as needed. It does look like a big job but I hope taking it slow will benefit me. Any comments on the gasket types?

I used a Felpro and it hasn't leaked again. My BHG was really very mild, no signs of heat and it was only slightly distorted. The head bolts had been retorqued ~50k miles, and it didn't leak until ~70k, so I am a believer that retorquing won't repair any early damage.

I confirmed my BHG by looking down the spark plug hole and finding a little water. Naturally it had to be #6 way in the back. I had the head resurfaced, and it was only out ~7 mils, IIRC. I just cleaned the block very well.

I think a NA engine would be a LOT easier to work on.