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How to Fix a Cracked Starter Bolt Hole?

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Old 09-23-2017, 11:38 AM
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Dh1969
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Default How to Fix a Cracked Starter Bolt Hole?

I have a 1969 big block 4 speed with a cracked starter bolt hole. Has anyone used an engine starter plate allowing for a chevy 55-56 style starter mount cone? Real Deal Steel and Danchuk sell Chevy engine starter plates.

Also, has anyone used Lock N Stitch's GM starter motor BH (FFT4SP007K) product to solve the cracked bolt hole?

Thanks in advance.

Last edited by Dh1969; 09-23-2017 at 11:39 AM.
Old 09-23-2017, 12:55 PM
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71VetteLover
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Originally Posted by dh73&78
I have a 1969 big block 4 speed with a cracked starter bolt hole. Has anyone used an engine starter plate allowing for a chevy 55-56 style starter mount cone? Real Deal Steel and Danchuk sell Chevy engine starter plates.

Also, has anyone used Lock N Stitch's GM starter motor BH (FFT4SP007K) product to solve the cracked bolt hole?

Thanks in advance.

The crack repair process is known as a "Salsbury Cold Weld" and it was used for many years before Heli-Arc, TIG welding, and metal spraying came along. Cast iron is easily welded now days by pre-heating it and spraying molten iron powder into the V'eed out crack. How about putting an ordinary Heli-Coil into it and calling it a day?
Old 09-23-2017, 03:19 PM
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dmaxx3500
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you mighty have better luck using a ''time-sert'',or take the eng out and dissassmble it and have it spray welded
Old 09-23-2017, 05:06 PM
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71VetteLover
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My local automotive machine shop has welded many cracked Chevy blocks. They just heat the iron to near-melting then spray iron powder into the V'eed crack then re-drill and re-tap the hole. My outer starter bolt hole stripped several years ago and I just installed a Heli-Coil.
Old 09-25-2017, 12:43 AM
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Dino_'72
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Originally Posted by dh73&78
Has anyone used an engine starter plate allowing for a chevy 55-56 style starter mount cone? Real Deal Steel and Danchuk sell Chevy engine starter plates.
My son's friend used the Danchuk adaptor plate as a fix for a cracked starter bolt hole on an '86 K5 4x4 with 700R tranny. Been one year - working good. Only issue is the torque converter bottom cover needs to be modded for reinstallation.

Not sure, but I don't think this adapter plate will work for manual transmissions. I would think the clutch fork geometry would be out of alignment. You could modify and go to a hydraulic fork set up. Would need some research.

Another option is perhaps you could use a cast iron bellhousing that allows the starter to mount to the bellhousing. Check out link below, might be an option for you. Good luck.

http://www.4speedconversions.com/365.html

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