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  1. Coolant procedures.

    If you didn't do a drain/fill/flush then it'd only drop if you had air in the system. If you're on the OEM fill still, there wasn't really a point in doing the bleed procedure.

  2. Coolant procedures.

    I did both the high and low procedures successfully. But I didn’t see anything drop in coolant, is this normal? I didn’t upgrade or replace anything. Just doing routine maintenance. TIA.

  3. Wagner Tuning Manifold....Thoughts?

    And what have been those race cars? Did they have electrical PWM water pumps and a low temp cooling circuit that pumps coolant through a heat exchanger in a cooling stack in front of the car and an air to water intercooler located in a intake manifold?

  4. RECENTLY BOUGHT SUPRA ENGINE PRODUCING WHITE SMOKE

    Turns out it needs a head gasket replacement. Is this something I should be worried about? I’m concerned it’s had this problem at only 10k miles

  5. Verus oil-to-air oil cooler

    An well-designed heat exchanger will improve your IATs, eg PWR. Unfortunately, most of the aftermarket heat exchangers are junk that add weight and massively increase pressure, ie decrease flow, in the low temp system. From my testing, the PWR one is probably the only one worth buying. There may...

  6. RECENTLY BOUGHT SUPRA ENGINE PRODUCING WHITE SMOKE

    Yea coolant is fine

  7. RECENTLY BOUGHT SUPRA ENGINE PRODUCING WHITE SMOKE

    Yes, it works perfectly now, after I installed a new harmoic balancer. I made a thread about this here: https://www.supramkv.com/threads/slipping-serpentine-belt-broken-crank-pulley-harmonic-damper.22242/ But have you checked the coolant level yet? Might be that it is low on coolant, but that...

  8. Air conditioning blowing hot air

    Hey gang! There was a coolant pump seized code when the dealership scanned my car. But there was no check engine light, it was dangerous as hell because my Intercooler temp could have been terrible. The low temp circuit coolant pump was broken! Once the low temp coolant pump was replaced, the...

  9. Air conditioning blowing hot air

    How did they come to that conclusion that the pump had seized, was the coolant not being used?

  10. Air conditioning blowing hot air

    I need all of you to re-assemble here like the avengers please. Having the same problem, my pulley belt snapped took a chunk of the ac compressor pulley with it. I got another compressor from an M340 installed and the clutch on it does not engage, ac still blows hot air but the pulley spins just...

  11. Toyota Supra coolant concern

    BMW HT-12 is not premixed, you should mix it according to the directions on the container. However, 2 cups' worth isn't going to cause a problem.

  12. Toyota Supra coolant concern

    Hello I just have a concern about my Supra’s coolant. It’s giving me notification that my coolant level is low. Therefore I bought the BMW HT-12 green coolant and poured like 1-2 cups of it until filled up to the max limit. I did not mix it with deionized water. After that I was concerned if I...

  13. Cool me down to take another round

    It’s funny since I stopped driving off season, I don’t remember doing anything different with the coolant. But it’d be interesting to hear how it turns out for ya! Maybe things have changed. That’d be a cheap & quick way to bring IATs down if it works…

  14. Cool me down to take another round

    I haven't yet but I thought about mixing a lower amount of the bmw ht-12 coolant with one of those or Summit Racing non-glycol coolant. Maybe I'll do that first for the low temp circuit to see if it helps lower IAT at all.

  15. Cool me down to take another round

    the only coolant you should be using on a track is water+water wetter.

  16. Blown Head Gasket ?? [HELP NEEDED]

    How low does your coolant temp drop after flooring it ? I don't have a catch can setup. Just running the factory pcv system right now. However, I do plan on doing pcv block off pins when I replace the head gasket since I'll be in there anyways. I can understand small amounts of smoke but it was...

  17. Bad direct injector?

    First off I want to say thank you for all you suggestions, I really appreciate it! I have done a smoke leak test but not sure if the smoke was able to get into the intake manifold as most of the smoke was leaving through the air filter. I want to give this another go but not need to figure out a...

  18. Bad direct injector?

    Have you ever smoke tested your intake side? That's another diagnostic that I don't recall in the thread's post history. Perhaps you have a significant leak somewhere, and the car is hunting, to the extent that it's tripping cylinder 1. Grasping at straws some more: How are your MAP sensors...

  19. Coolant issue

    I brought the wife's car in for service last week (same engine but in a real BMW) because the coolant was a smidgen low and the warranty is about to expire. They performed a pressure test and couldn't find any issues. The service writer (who I generally, mostly trust) said that it's very...

  20. Supra engine overheating

    Coolant target is 95c at operating temp and 107c at warm up. Control (when the alarm bells sound) is 130c. So you are close at 120c. Did you do the correct bleeding sequence for the high temp circuit? High temp circuit is with the engine running and low temp circuit is without the engine...





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