Flywheel thread coming out

Clutch, transmission, rear axle

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ebaby35
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Flywheel thread coming out

Post by ebaby35 »

Ok I removed flywheel and noticed a thread was popping out. Should I just cut it, or resurface or get a new flywheel. I need a new ring gear and trying to save as much money as I can. Last thing the person I bought the truck from gave me a replacement ring gear but it doesnt look like it's a perfect circle that normal?
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Ranchero50
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Re: Flywheel thread coming out

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Looks like some dumbass installed a helicoil in it. No beuno... Should be a solid keyed insert instead. Google key-sert for pics and idea.
'70 F-350 CS Cummins 6BT 10klb truck 64k mile Bahama Blue

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ebaby35
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Re: Flywheel thread coming out

Post by ebaby35 »

What are my options? Should it be replaced

Ranchero50 wrote:Looks like some dumbass installed a helicoil in it. No beuno... Should be a solid keyed insert instead. Google key-sert for pics and idea.
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sargentrs
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Re: Flywheel thread coming out

Post by sargentrs »

I wouldn't take take any chances, I'd replace it.
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1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
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Ranchero50
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Re: Flywheel thread coming out

Post by Ranchero50 »

I would just install a keysert. We use them often at work and they're well suited for this type application. The coil insert should not have pulled out but they do if over torqued.
'70 F-350 CS Cummins 6BT 10klb truck 64k mile Bahama Blue

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ebaby35
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Re: Flywheel thread coming out

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So do I pull the coil out and re-tap for keysert?

Ranchero50 wrote:I would just install a keysert. We use them often at work and they're well suited for this type application. The coil insert should not have pulled out but they do if over torqued.
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Ranchero50
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Re: Flywheel thread coming out

Post by Ranchero50 »

Yeah, that should suffice. The keysert is a solid oversized insert with locking pins that you drive in once the insert is flush. You'll need to countersink the surface @ .100" before tapping it for the sert to go all the way flush or you can grind the excess off once installed.

In any case, don't overtorque the bolts.
'70 F-350 CS Cummins 6BT 10klb truck 64k mile Bahama Blue

Contact me for CNC Dome Lamp Bezels and Ash Tray pulls.
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