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Author Topic: 390 running very hot  (Read 71563 times)
mikestang
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« Reply #30 on: September 07, 2013, 12:25:46 am »

Ya, one one way on this engine, v-belt
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nflfreak43
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« Reply #31 on: September 07, 2013, 10:07:13 am »

Ya got a laser thermometer? Go through the cooling system with it and see if you can find where the temp spikes.. If ya can you know about where a blockage etc is..


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mikestang
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« Reply #32 on: September 10, 2013, 07:11:56 pm »

Today it is cooler out, about 65.  Running at 236 before and after the t-stat.  Top metal part of the rad tank is about 232.  I can read the temp (w/laser thermometer) and it cools as you go down.  Bottom tank on the rad is about 200 and inlet on the bottom of the water pump is about 196ish.  

I put in a mechanical type gauge in the manifold, to be sure it was reading the same as my laser one, it is. 

Fan pulling good air, even driving in the cool air the vehicle wont cool off. 

Oil pressure it idle is sitting at 60psi, according to the mech gauge on the dash.  Seems high?  Part of why I was wondering if it was built too tight.
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85_GT
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« Reply #33 on: September 10, 2013, 08:57:26 pm »

Vacuum advance on the distributor?
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mikestang
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« Reply #34 on: September 10, 2013, 09:02:19 pm »

Yes, all timing spec listed at the first post. 
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85_GT
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« Reply #35 on: September 10, 2013, 09:24:14 pm »

12 deg initial with vacuum unplugged, correct?
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« Reply #36 on: September 10, 2013, 09:57:48 pm »

12 deg initial with vacuum unplugged, correct?


Remove the vacuum hose from your dizzy and reset your timing and test drive it.

It could be that your dizzy's vacuum advance system is messed up.
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85_GT
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« Reply #37 on: September 10, 2013, 10:04:24 pm »

12 deg initial with vacuum unplugged, correct?


Remove the vacuum hose from your dizzy and reset your timing and test drive it.

It could be that your dizzy's vacuum advance system is messed up.
Correct, remove and plug.  Then see what happens when you reconnect the vacuum hose after it's set. LUK
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85GT, Dart Windsor Jr, Crane 2030 equiv. Performer 5.0, 75mm TB, 88mm Slot, 34lbs injectors, 1 5/8" shorties, 5spd converted to 4R70W with Baumann controller, 3.25 9"
A9L running A9P bin via Quarterhorse with LC-1
mikestang
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« Reply #38 on: September 10, 2013, 10:36:33 pm »

Yes 12 with no vacuum. No vacuum at the dist when idling.  I can do that but the vehicle will get to 230 after idling only for about 20min, no driving. 
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85_GT
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« Reply #39 on: September 10, 2013, 10:43:56 pm »

Roger, just wanted to verify you didn't inadvertently have extra advance at idle.
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85GT, Dart Windsor Jr, Crane 2030 equiv. Performer 5.0, 75mm TB, 88mm Slot, 34lbs injectors, 1 5/8" shorties, 5spd converted to 4R70W with Baumann controller, 3.25 9"
A9L running A9P bin via Quarterhorse with LC-1
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« Reply #40 on: September 10, 2013, 10:46:51 pm »

If you want to try, it be interesting what it does if you reduced the advance to 0.

Theoretically, more heat goes out the exhaust with reduced timing and more goes into the heads with increased timing.
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85GT, Dart Windsor Jr, Crane 2030 equiv. Performer 5.0, 75mm TB, 88mm Slot, 34lbs injectors, 1 5/8" shorties, 5spd converted to 4R70W with Baumann controller, 3.25 9"
A9L running A9P bin via Quarterhorse with LC-1
mikestang
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« Reply #41 on: September 10, 2013, 11:18:51 pm »

I had though about that... I'll try it tomorrow, see what happens
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« Reply #42 on: September 11, 2013, 07:51:38 am »

If you retard timing , it will run hot. I would remove the vac adv. and bump up the initial so the total stays the same. Had a friends car that used to get hot, once we locked the distributor and run 32' timing, it would stay at 180. Bfore that it would creep up to 200-210 at low speeds. Good Luck!
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« Reply #43 on: September 11, 2013, 08:11:16 am »

If you retard timing , it will run hot. I would remove the vac adv. and bump up the initial so the total stays the same. Had a friends car that used to get hot, once we locked the distributor and run 32' timing, it would stay at 180. Bfore that it would creep up to 200-210 at low speeds. Good Luck!
What He Said
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85_GT
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« Reply #44 on: September 11, 2013, 08:51:48 am »

Guess Ford did not understand that when they wrote their software.  Whistling
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85GT, Dart Windsor Jr, Crane 2030 equiv. Performer 5.0, 75mm TB, 88mm Slot, 34lbs injectors, 1 5/8" shorties, 5spd converted to 4R70W with Baumann controller, 3.25 9"
A9L running A9P bin via Quarterhorse with LC-1
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