ON Topic: 88 Supra overheating...
in [Toyota]
|
Prev: Groups want FCC to police hate speech
Next: Where's the monthly number of who posted the mostest?
From: clare on 4 Jun 2010 20:55 On Thu, 03 Jun 2010 21:32:18 -0400, Hachiroku ???? <Trueno(a)e86.GTS> wrote: >On Fri, 04 Jun 2010 01:23:24 +0000, Tegger wrote: > >>> The coolant I saw in the shroud was the stuff that was being purged out >>> of the bottle... >> >> >> Either a bad rad-cap, or you've got a blown head gasket. > >DO NOT say this!!! We're talking a Supra here! Not that a 1986-1991 Supra >would *EVER* blow a head gasket!!! > >This is the one thing I'm praying it's not... If you overheated it , whatever the original cause, you are LIKELY now looking at another head gasket - and be VERY sure you have the head checked for warpage when it is off. They are a fantastic engine, on the whole - but not terribly forgiving of massive overheating. > >AFAIK, the head gasket has already been replaced and the bolts torqued to >the new spec. I'm praying REALLY hard... (Although it doesn't look like >that hard a job. I was already 2/3 of the way there when I replaced the >spark plugs...) > >
From: clare on 4 Jun 2010 20:56 On Thu, 03 Jun 2010 20:28:54 -0700, jim beam <me(a)privacy.net> wrote: > >get one of those chemical leak test kits. the pH of the coolant changes >if the gasket is leaking - provided you haven't masked it by changing >the coolant too recently. It's not the PH it is checking - so having changed the coolant 2 weeks ago will have NO effect on the test.
From: clare on 4 Jun 2010 21:01 On Thu, 3 Jun 2010 22:52:38 -0500, "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote: > >Look for oil in the coolant, either in the radiator or a milkshake >appearance in the oil. Either symptom can indicate a BHG. If the coolant >and oil are pristine, then you have a leak somewhere in the cooling system - >radiator, hoses, cap, or heater core. > >While you're poking around make sure coolant isn't weeping or leaking from >the timing cover, a sign of a leaking water pump. On the M series engine it is not uncommon for a blown head gasket to NOT show up as either oil in the coolant or coolant in the oil. The exhaust sniffer at the rad cap is a pretty good diagnostic - but make sure NO antifreeze gets into the sniffer - the dedicated test kits that check for combustion byproducts works quite well - but just putting the rad pressure tester on a warmed up engine and loading the engine will tell you FOR SURE. If the needle climbs quicly on an engine running at normal operating temperature, you have a combustion pressure leak - guaranteed.
From: Hachiroku ハチロク on 4 Jun 2010 22:22 On Fri, 04 Jun 2010 20:55:19 -0400, clare wrote: > On Thu, 03 Jun 2010 21:32:18 -0400, Hachiroku ???? <Trueno(a)e86.GTS> wrote: > >>On Fri, 04 Jun 2010 01:23:24 +0000, Tegger wrote: >> >>>> The coolant I saw in the shroud was the stuff that was being purged >>>> out of the bottle... >>> >>> >>> Either a bad rad-cap, or you've got a blown head gasket. >> >>DO NOT say this!!! We're talking a Supra here! Not that a 1986-1991 Supra >>would *EVER* blow a head gasket!!! >> >>This is the one thing I'm praying it's not... > > If you overheated it , whatever the original cause, you are LIKELY now > looking at another head gasket - and be VERY sure you have the head > checked for warpage when it is off. They are a fantastic engine, on the > whole - but not terribly forgiving of massive overheating. >> The sound you just heard was my bubble bursting... I have a new radiator. If the rain holds off this weekend I'll put it in (it was needed anyway...) and then take it for a spin. It takes over 25 miles for the engine to start to creep up in temp. Yeah, I think a new HG is in order...I'm hoping I can get through this summer OK and do it over the winter. NOT something I was looking forward to doing...I believe it was replaced once, a year before I bought it in '04. >>AFAIK, the head gasket has already been replaced and the bolts torqued to >>the new spec. I'm praying REALLY hard... (Although it doesn't look like >>that hard a job. I was already 2/3 of the way there when I replaced the >>spark plugs...) >> >> >>
From: Tegger on 4 Jun 2010 22:52
=?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno(a)e86.GTS> wrote in news:IxiOn.33028$TL5.12092(a)newsfe24.iad: > > Yeah, I think a new HG is in order...I'm hoping I can get through this > summer OK Not a great idea. Leave it too long and you get corrosion and gas-cutting on the block surface,both of which will most likely render your engine uneconomic to repair. Unfortunately, you need to either park your ride or get this fixed, both ASAP. So, uh, have you taken a whiff of the expansion bottle yet? It only takes seconds to do that, and the result could change the entire tendency of this thread... -- Tegger |