Heat soaked starter problems
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Cargo Master
Joined: Jul 2000
Posts: 2,281
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From: Northern California
Heat soaked starter problems
I have a 428 with headers and the starter is too slow once it's been driven for a while. The CR is about 10.5:1 and I'm using a stock rebuilt starter with ground going directly to the starter bolt. It cranks great when cold.
I wrapped the pass side header and have a ThermTec starter wrap around the starter and a thick steel plate between the back of the starter and the header where the wrap doesn't cover.
I was wondering if anyone knows of any other ways to help keep the starter from heat soaking.
Is heat probably the problem with a slow starter?
Any suggestion?
I wrapped the pass side header and have a ThermTec starter wrap around the starter and a thick steel plate between the back of the starter and the header where the wrap doesn't cover.
I was wondering if anyone knows of any other ways to help keep the starter from heat soaking.
Is heat probably the problem with a slow starter?
Any suggestion?
Moderator
Joined: Dec 2001
Posts: 22,436
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From: Louisville,Ky.
Heat soaked starter problems
[updated:LAST EDITED ON 31-Aug-02 AT 02:41 AM (EST)]You might want to try a NEW starter. With most rebuilt ones, they only replace what is bad such as the bendix, A new one will have all new windings and everything. This may cure your problem.
Also, make sure that your cables are in good shape, my Mustang did that once and the ground cable was weak. It looked good, but when I replaced it, the problem went away.
Timing's not to high is it? They usually won't drag from high timing when cold.
Also, make sure that your cables are in good shape, my Mustang did that once and the ground cable was weak. It looked good, but when I replaced it, the problem went away.
Timing's not to high is it? They usually won't drag from high timing when cold.
Post Fiend
Joined: Sep 2000
Posts: 8,238
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From: Oregon
Heat soaked starter problems
[updated:LAST EDITED ON 03-Sep-02 AT 03:37 PM (EST)]I agree that you should also try a new starter, as the measures you've taken to reduce heat should be enough. But I wanted to mention that although those thermal starter blankets are good, the header wraps aren't. I run a hopped up 428 as well with the stock starter, but I had my headers ceramic coated. This works so well I don't have the need for a starter blanket. I just wanted to throw that out in case you continu to have a chronic problem, you might think about getting your headers coated.
Almost forgot...before you go switching out starters, check your timing. When you talk about a slow starter when hot, I assume you mean its cranking slow. Mine used to do the same thing...untill I adjusted my timing advance (I don't recall if it was up or down though). Right now I have it at 12 btdc and everythings happy.
Almost forgot...before you go switching out starters, check your timing. When you talk about a slow starter when hot, I assume you mean its cranking slow. Mine used to do the same thing...untill I adjusted my timing advance (I don't recall if it was up or down though). Right now I have it at 12 btdc and everythings happy.
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
Heat soaked starter problems
I assume you have replaced the ignition module with something other than stock. The Ford OEM Duraspark modules have a timing retard function built in.
I agree with the ceramic coated headers (they are worth the $$) and the new starter -vs- rebuilt unit. A remanufactured starter should have new windings and all new parts. Some parts are advertised as reman when they are only rebuilt.
You need airflow around the starter, some wrap type heat shields make the problem worse. You need a heat shield against radiated heat, but you also need unobstructed air flow around the starter while you are moving and sitting still.
You might want to try one of those gear reduction high torque starters. Try the cheap remedies first.
I agree with the ceramic coated headers (they are worth the $$) and the new starter -vs- rebuilt unit. A remanufactured starter should have new windings and all new parts. Some parts are advertised as reman when they are only rebuilt.
You need airflow around the starter, some wrap type heat shields make the problem worse. You need a heat shield against radiated heat, but you also need unobstructed air flow around the starter while you are moving and sitting still.
You might want to try one of those gear reduction high torque starters. Try the cheap remedies first.
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