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Starter heat soak with headers

Old 06-09-2018, 10:58 PM
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19corvette91
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Default Starter heat soak with headers

Experiencing starter heat soak in my 1991 L98/ ZF6.
Starter will not turn over when car is hot.

I hear solenoid engagin.

Anyone experience this and have a cure?

If I remember correctly, I had this problem with an IROC Camaro about 15 years ago. Never solved it then either.

Thanks in advance.
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Old 06-09-2018, 11:19 PM
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Benny42
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When i installed headers on my '86 i replaced the starter (non-original, unknown vintage) with a starter from a '95 model. This created plenty of clearance and i've had no heat soak issues. What style starter does your car have. '91 is "supposed" to have the smaller starter but my buddy's '91 had an old style, huge, almost touched the pipes, boat anchor. It now has a later model, no issues.
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Old 06-10-2018, 12:00 AM
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A cheap *** metal heatshield to create an air gap around it if it is the small one will pretty much solve it. On the 67 no matter what I do it still does it though. The collector is about 4 inches from that one though...
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Old 06-10-2018, 12:22 AM
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I do indeed have the small starter.

Might have to give the heat shield a try.

Thanks!
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Old 06-10-2018, 12:36 AM
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Originally Posted by 19corvette91 View Post
I do indeed have the small starter.

Might have to give the heat shield a try.

Thanks!
I believe your 'denso just needs some 'maintenance' !! You don't need a shield and I don't know that there is a shield for the 'denso. You also need to check cable condition 'not' limited to just battery terminals, if your + cable has the slip-on protector with a 'ring-terminal' beneath it give it attention also.

You also need a battery that's @ 100%

Last edited by WVZR-1; 06-10-2018 at 12:39 AM.
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Old 06-10-2018, 04:01 AM
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aklim
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Originally Posted by 19corvette91 View Post
I do indeed have the small starter.

Might have to give the heat shield a try.

Thanks!
Maybe a better quality starter if this one is failing or a little weak? Maybe a high torque starter?
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Old 06-10-2018, 09:20 AM
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Originally Posted by aklim View Post
Maybe a better quality starter if this one is failing or a little weak? Maybe a high torque starter?
If the OE/'denso is still there 'maintenance' , battery, cables and the SER circuit checks. After checking all, if starter is an after-market reman then maybe you consider a starter replacement. It would be I think the last resort.
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Old 06-10-2018, 11:07 AM
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This was a common problem on 70s muscle cars (I had a 1970 442 with this problem). Heat shield didn't work, new starter only worked for a few months. What fixed it permanently was a kit to relocate the relay portion of the starter solenoid to a cooler location (the fender well in my case).

Steve
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Old 06-10-2018, 11:51 AM
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Originally Posted by NavAir View Post
This was a common problem on 70s muscle cars (I had a 1970 442 with this problem). Heat shield didn't work, new starter only worked for a few months. What fixed it permanently was a kit to relocate the relay portion of the starter solenoid to a cooler location (the fender well in my case).

Steve
This is the next step if the peanut doesn't work on the 67. The factory starter was marginal cold with the compression it is running though.
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Old 06-10-2018, 12:29 PM
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Any mods other than headers. I would do the test battery and connections routine.
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Old 06-10-2018, 01:21 PM
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Repair or replace your starter. Heat soak is usually not a problem on modern small starters.
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Old 06-11-2018, 02:23 AM
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Originally Posted by WVZR-1 View Post
I believe your 'denso just needs some 'maintenance' !! You don't need a shield and I don't know that there is a shield for the 'denso. You also need to check cable condition 'not' limited to just battery terminals, if your + cable has the slip-on protector with a 'ring-terminal' beneath it give it attention also.

You also need a battery that's @ 100%
Originally Posted by RWDsmoke View Post
Repair or replace your starter. Heat soak is usually not a problem on modern small starters.
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Old 06-11-2018, 12:16 PM
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I'd replace the starter. Heat shields do not work. Wraps let rust eat up exhaust pipes.
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Old 06-11-2018, 02:37 PM
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Originally Posted by 19corvette91 View Post
Experiencing starter heat soak in my 1991 L98/ ZF6.
Starter will not turn over when car is hot.

I hear solenoid engagin.

Anyone experience this and have a cure?

If I remember correctly, I had this problem with an IROC Camaro about 15 years ago. Never solved it then either.

Thanks in advance.
Hello,

Tim from DEI here. We offer a couple of versions of starter wrap that work really well. We offer the full size GM starter wrap under pat number 010402 and a mini starter wrap under part number 010384. We sell tons of these with great results on just about everyone that is having solenoid or heat soak issues. They have hook and loop strips for easy installation. Some guys will use our stainless steel locking ties as an extra securing method. As far as header wrap, I suggest our Titanium wrap check out kit number 010095 between the starter shield and the header wrap this should fix the issues you are having. Also, when wrapping headers as long as they are coated, painted or stainless you should not see any rust. Bare steel, water and oxygen cause rust not header wrap. Header wrap is over top of your exhaust system that typically runs between 400-800 degrees Fahrenheit. So unless you drive your car thru a swamp or car wash and then park it immediately any water on the wrap will burn off almost immediately. No different than an unwrapped pipe getting wet. For any questions feel free to reach out to me or visit www.designengineering.com

Thank you, Tim
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Old 06-11-2018, 05:44 PM
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Originally Posted by whalepirot View Post
Agree/disagree.


My 408cid HiPerf had this issue. Lessons learned:

1) starter blanket kept the heat in the starter real well,
2) relo of solenoid did not help,
3) header wrap (painted) did not ruin my headers, in 10 years of use.

4) HiTorque (IMI) starter was my solution (American made, too).
YMMV
Just got a text saying the starter is clicking when hot again. That's a mini gear reduction one at that. Made it 3 months lol. I guess I have to remote mount the relay and see if that helps... Race car problems lol.
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Old 06-11-2018, 06:55 PM
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Originally Posted by 84 4+3 View Post
Just got a text saying the starter is clicking when hot again. That's a mini gear reduction one at that. Made it 3 months lol. I guess I have to remote mount the relay and see if that helps... Race car problems lol.
There's $50 mini and there's quality mini - they ain't all the same. Many folks pay 'premium' but still receive the $50 mini.

Ain't a 'race car problem' - likely a quality part problem.
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Old 06-11-2018, 07:54 PM
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Hi.. The Chevy Silverado's from about 99ish to 05ish (those are the ones I have seen anyway, may run newer or older?) have a totally universal looking shield over the solenoid area. It just clips into place covers the solenoid to dissipate heat like a sink.

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Old 06-11-2018, 09:13 PM
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Originally Posted by WVZR-1 View Post
There's $50 mini and there's quality mini - they ain't all the same. Many folks pay 'premium' but still receive the $50 mini.

Ain't a 'race car problem' - likely a quality part problem.
Well, the collector touched the non gear reduction starter and is about 3 inches away from the mini... I think it is just a bad design tbh. (Even though they're direct fit headers...)

That being said it is the summit in house starter but I've talked to a lot of people and they've all had good luck with them but I never have luck with anything... The selection I have is also limited because of the 166 tooth flexplate... May try another brand depending on what summit says. (And others)
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Old 06-11-2018, 09:46 PM
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Originally Posted by 84 4+3 View Post
Well, the collector touched the non gear reduction starter and is about 3 inches away from the mini... I think it is just a bad design tbh. (Even though they're direct fit headers...)

That being said it is the summit in house starter but I've talked to a lot of people and they've all had good luck with them but I never have luck with anything... The selection I have is also limited because of the 166 tooth flexplate... May try another brand depending on what summit says. (And others)
Did you mean 168 OR do you maybe have a '67 Pontiac?

Last edited by WVZR-1; 06-11-2018 at 10:03 PM.
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Old 06-11-2018, 09:59 PM
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Originally Posted by WVZR-1 View Post
Did you mean 168 OR do you maybe have a '67 Pontiac?
No it's a pontiac, I'd have fixed the chevy by now lol. It just isn't well laid out at all imo. (I work on a lot of peoples crap... this one is just very wild...) If it were mine I wouldn't be so worried but like I don't need my aunt getting stuck somewhere when I'm at work or at school you know? My cousins are good but they won't push a car a quarter mile down the road if they had to... I treat this thing like it is my own.
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