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Heat and ignition probs

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Old Sep 4, 2014 | 04:15 PM
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Default Heat and ignition probs

Hi every body ! I ´have a '72 base engine with a new aftermarket HEI distributor . After a drive , in hot day or if i stay stuck in the trafic , it´s difficult to restart my engine . Not a vapor lock. Just not enough power from the battery for the starter . After Few minutes , everything is ok and my corvette start and run like a charm !
Is it the cheap distributor ´s modul who dislike the engine heat ?
What do you think guys ?
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Old Sep 4, 2014 | 04:27 PM
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I would look for loose or frayed connections on the starter, and distributor. Bad connections result in added heat and resistance on the wire.
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Old Sep 4, 2014 | 04:48 PM
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if the starter is having trouble turning over when hot it has nothing to do with the distributor unless you didnt correctly set initial timing. What is your initial timing set for? How old is the battery? Are the battery connections at the battery, at the starter, and at the battery ground, clean and tight?
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Old Sep 4, 2014 | 05:16 PM
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Hi l,
If not connection/cable issues as Mash and MW listed….
Is the proper heat shield for the starter in place?
Regards,
Alan
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Old Sep 4, 2014 | 05:20 PM
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Originally Posted by MelWff
if the starter is having trouble turning over when hot it has nothing to do with the distributor unless you didnt correctly set initial timing. What is your initial timing set for? How old is the battery? Are the battery connections at the battery, at the starter, and at the battery ground, clean and tight?
Battery connections tight & clean . I' m going to check my starter wiring this week end . I' ve noticed in same time , my idle rpm decrease and my tack needle wobble...
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Old Sep 4, 2014 | 05:48 PM
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Originally Posted by Alan 71
Hi l,
If not connection/cable issues as Mash and MW listed….
Is the proper heat shield for the starter in place?
Regards,
Alan
No , i'haven ´t the heat shield !
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Old Sep 4, 2014 | 06:26 PM
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Hi L,
There was one there originally and the General wouldn't have installed it if it wasn't needed.
It's got to help a little. It helps prevent the heat from the outlet of the exhaust manifold from blowing right back on the starter and solenoid.
Regards,
Alan
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Old Sep 5, 2014 | 11:19 AM
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This was a common problem back in the 70's. The solenoids cook with the heat coming off the engine. We called it "Hot Starts".

Ford and Chrysler mounter the Solenoids on the side wall instead of down on the starter.

You probably need to replace your starter with a smaller faster one anyways, but you will definately need to install the heat shield to save whats left of the existing one.

If you can't find a pre-made heat shield, you can bend one up with some decent guage metal from a local department store.

Ken
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Old Sep 5, 2014 | 11:31 AM
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I'm using the reflective fabric-type heat shield on my 454 with headers. Got it at Summit and it installs very quickly with velcro. Cured my cars' hot start issue.
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Old Sep 7, 2014 | 04:10 PM
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Originally Posted by 74Ken
This was a common problem back in the 70's. The solenoids cook with the heat coming off the engine. We called it "Hot Starts".

Ford and Chrysler mounter the Solenoids on the side wall instead of down on the starter.

You probably need to replace your starter with a smaller faster one anyways, but you will definately need to install the heat shield to save whats left of the existing one.

If you can't find a pre-made heat shield, you can bend one up with some decent guage metal from a local department store.

Ken
Thanks , i 'll follow your advices.
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