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Old 11-11-2011, 11:10 AM   #1
Turboron_99
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Cool Hello Mk3 Owners

Hi Guys/Gals

I am totally new to the Supra world. I just picked up a '89 Supra about a week ago now. I have been whoring up the forum here. I have done so much searching! I got a really really good deal on this Supra. I was told that when i bought it, it was running poorly due to a BHG. I am a mechanic and that was not an issue to me!

I paid 2k for this Supra, I found that the BHG assumption was 100 percent false, it was missing and running badly because the majority of the Air was unmeasured due to the Inlet pipe off the Compressor housing on the Turbo being cracked and dry rooted!

Now I have the parts on order, and i am looking to find out why the car will start to get warmer than normal under regular driving after about 30 minutes of driving, I want to say it has a bubble by I am having a hard time bleeding the Radiator, I assume this is a common issue, is there some sort of trick to this?

Thanks for the help, I will post a Pictures of the car with in the next few days here!
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Old 11-12-2011, 02:06 AM   #2
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Checked the timing?

The overheating isn't "normal".... Have you checked the timing (both mech and ign)?

There is no bleeding proceedure for the MKIII; You really should just be able to purge any air with a couple heat cycles... if not the system isn't up to snuff. With that said, many still recommend bleeding by jacking the front of the car up as high as possible and then running it. I've never bled a MKIII. Either way if you still have gas in the air system after a few heat cycles you may indeed have a BHG and should do a pH test on the coolant.

Good luck with the car!
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Old 11-12-2011, 05:03 AM   #3
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Thanks for the reply,

Today did a compression check on the car, looked really good, the biggest percent difference i had was 3 percent and it was between cyclinders 3 and 6.

I did do a acidity test on the coolant came back fine, also the Coolant is still bright orange, I see no muddy looking coolant.

I took the car out and drove it around and everything was fine, I am going to assume that it was a air bubble trapped in the coolant system somewhere.

Plans for Saturday, is a oil change and I am going to tear about the intercooler setup, as you can clearly see that there has been blow by at some time from the valve covers and it got blown all into the intercooler piping. I am going to setup a catch can so i only have to clean it out once!

Are there any other things i should do or look at?
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Old 12-13-2011, 03:43 AM   #4
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Wink

Okay So i Have been one busy bee with the Supra, So far the things i have done.

I have pulled the motor out just to do some Pre-Problematic Maintenace.

Things i did.

1. Removed Head, Had shaved. they removed .004 to get it flat. I was Suprised.
2. While the head was out, had Turbo Rebuilt.
3. Installed ARP headstud.
4. Took the oil pan off to inspect pan, just looking for shaving chunks that kinda thing. Check all bearing.
5. Replace front and rear seals,
6. Fixed Leaky Power stearing pump and lines.


7. Supra went together today, took it for a drive man it is a blast now.

Mods so far, are a simple 3" Turbo Back, Intake, and With the new turbo I shimmed the wastegate with a 7/16" custom shim.

I will upload some pictures when it is warm enough to wash it. Right now it is a hot 12 degrees outside!
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