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Hi Guys,

I have had a 2006 Z06 for many years now, the hot start issue has always been there and i am looking into a high torque starter motor but i have ARH Headers and in the past i bought a MSD Starter but it wouldnt get round the headers.

I have wrapped my headers now
I have a heat shield over my starter
I have decent Optima Red top battery
cables have been replaced to ensure good clean connections.

I am sure my stock starter is on its way out, i just wanted to check if anyone has found a high torque starter which works with ARH headers.

Car has full bolt on, cam / intake / headers / tb etc etc

I have also just put a vented hood on it to help with heat.

Any help is greatly appreicated

Thanks

Matt
 

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No mater what kind of starter you have, it cant produce it's full torque unless it has enough current and voltage. In many cases the best way to think of electricity is by analogy to hydraulics. Pressure is the equivalent of voltage and flow is the equivalent of current. There is a limit to how much water will flow (current) through a 1/2 inch pipe no mater how much pressure (voltage) you put behind it. It took about a day's work, but I replaced the stock cables (+ & - which I believe are 2 gauge) with welding cable (00 gauge). Welding cable is larger in diameter and has hundreds of fine strands of wire in it. The positive cable runs from the battery to the fuse/junction box under the hood. I did not replace the cable to the starter. Other than removing most of the passenger side interior parts, the most difficult part of the job was moving the BCM to pass the positive cable under it. Also pay close attention to where the negative cable goes to chassis ground near the right rear speaker. The entire chassis is coated; so, scrape the coating off. The bigger cable adds about 2 or 3 pounds to the car.

The red top is a good start, especially if it is the Group 34R 800 CCA version. I had to lengthen the hold down bolts. It was a tight fit, but it does fit and the hatch closes. I have LG headers and a 30k mile stock starter. Neither are wrapped. When I press the start button the starter takes off like its coming out of the car regardless of temperature in the engine.
 

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No mater what kind of starter you have, it cant produce it's full torque unless it has enough current and voltage. In many cases the best way to think of electricity is by analogy to hydraulics. Pressure is the equivalent of voltage and flow is the equivalent of current. There is a limit to how much water will flow (current) through a 1/2 inch pipe no mater how much pressure (voltage) you put behind it. It took about a day's work, but I replaced the stock cables (+ & - which I believe are 2 gauge) with welding cable (00 gauge). Welding cable is larger in diameter and has hundreds of fine strands of wire in it. The positive cable runs from the battery to the fuse/junction box under the hood. I did not replace the cable to the starter. Other than removing most of the passenger side interior parts, the most difficult part of the job was moving the BCM to pass the positive cable under it. Also pay close attention to where the negative cable goes to chassis ground near the right rear speaker. The entire chassis is coated; so, scrape the coating off. The bigger cable adds about 2 or 3 pounds to the car.

The red top is a good start, especially if it is the Group 34R 800 CCA version. I had to lengthen the hold down bolts. It was a tight fit, but it does fit and the hatch closes. I have LG headers and a 30k mile stock starter. Neither are wrapped. When I press the start button the starter takes off like its coming out of the car regardless of temperature in the engine.
Just a personal aside, I had a hot start issue, as in nothing happened, in my 74 Olds 455 Cutlass. After it cooled thirty or so minutes it would crank back up. No problem. It was getting heat soaked. I insulated around it and replaced the starter/solenoid with new GM parts. Never had the problem again.

I am a huge fan of stock parts, including sealed AC/Delco batteries. No aftermarkets. That being said, I have never had hot start problems on my Corvettes. My Z07 will warm up on a hot summer day.
 
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