Starter overheat

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Not-quite-so-new-guy
Jul 14, 2020
38
18
Tyumen, Siberia
Hi, guys. There is a problem with 350 diesel starting due to overheating of the starter motor. It’s new, but the problem was diagnosed also with previous starter. It cranks good while the engine is cold but when it’s hot I need to wait more than 30 minutes to run the engine.
Anyone have the solution?
 
UNGN

UNGN

Comic Book Super Hero
Sep 6, 2016
2,670
113
Southlake, TX
Hi, guys. There is a problem with 350 diesel starting due to overheating of the starter motor. It’s new, but the problem was diagnosed also with previous starter. It cranks good while the engine is cold but when it’s hot I need to wait more than 30 minutes to run the engine.
Anyone have the solution?
Put a piece of Aluminum Sheet metal between the exhaust pipe and the starter with an air gap. Swap the Clutching fan on the motor with dual electric fans from a Dodge Intrepid/90's Chrysler 300.
 
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Game Over

Not-quite-so-new-guy
Jul 14, 2020
38
18
Tyumen, Siberia
Put a piece of Aluminum Sheet metal between the exhaust pipe and the starter with an air gap. Swap the Clutching fan on the motor with dual electric fans from a Dodge Intrepid/90's Chrysler 300.
Okay. Thank you!
 
M

Michael Watts

Master Mechanic
Dec 12, 2017
344
43
See if any heat shields from other cars like some from Moroso might fit.
 
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Roadwarrior88

Not-quite-so-new-guy
Feb 17, 2020
15
13
I've fought with hot soaked starters before. Tried heat shields, adding ground strap from starter bolt to frame, new battery cables, ran the LT1 starters, to only slightly better performance. Switching to a high torque mini starter helped alot, but after long drives in summer, still would have a longer crank on hot starts.

Painless "hot shot" relay is what finally fixed it. All you need is a standard 30/40 amp 5 pin relay, and connect as such.

Pin 85-purple start wire from ignition switch.
Pin 86-ground.
Pin 87-battery cable lug on starter
Pin 30-start terminal on starter solenoid.
 
Game Over

Game Over

Not-quite-so-new-guy
Jul 14, 2020
38
18
Tyumen, Siberia
I've fought with hot soaked starters before. Tried heat shields, adding ground strap from starter bolt to frame, new battery cables, ran the LT1 starters, to only slightly better performance. Switching to a high torque mini starter helped alot, but after long drives in summer, still would have a longer crank on hot starts.

Painless "hot shot" relay is what finally fixed it. All you need is a standard 30/40 amp 5 pin relay, and connect as such.

Pin 85-purple start wire from ignition switch.
Pin 86-ground.
Pin 87-battery cable lug on starter
Pin 30-start terminal on starter solenoid.
Wow! That’s a deal! Thank you
 
Game Over

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Not-quite-so-new-guy
Jul 14, 2020
38
18
Tyumen, Siberia
See if any heat shields from other cars like some from Moroso might fit.
I have an original shield. It was mounted to original starter motor. But it works not like shield but like sh*t
 
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