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Flex Plate Issues


FIERCE

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  • Member For: 15y 18d
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I have an atomic balancer possum, care to pm me why the change to a standard one is suggested?

hoping it's only a weight thing

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  • Member For: 14y 9m 26d
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I would never weld bolts especially ones that have been torqued, it would defeat the purpose and create weak spots throughout the bolt especially the thread end.

When I fitted my new flex plate, I used the standard bolts with a special hydraulic sealer used for holding cylinder liners in place and torqued the bolt to 80Nm (Bolt specified torque. do not use the manuals specified torque at 65Nm.) so far no problems and that's after some hard trials.

But as a side thought I am very surprised they advised to "weld" the bolts in place. really a cheap way out, and a very expensive process when they snap and damage more than just your flex plate.

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  • Member For: 13y 9m 26d
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  • Location: Auckland, New Zealand

I would never weld bolts especially ones that have been torqued, it would defeat the purpose and create weak spots throughout the bolt especially the thread end.

When I fitted my new flex plate, I used the standard bolts with a special hydraulic sealer used for holding cylinder liners in place and torqued the bolt to 80Nm (Bolt specified torque. do not use the manuals specified torque at 65Nm.) so far no problems and that's after some hard trials.

But as a side thought I am very surprised they advised to "weld" the bolts in place. really a cheap way out, and a very expensive process when they snap and damage more than just your flex plate.

I might go for this approach myself. Where did the torque info come from?

Thanks

Chris

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Im confused abit guys, I heard Brad got them welded, but in that case, how does it bolt up all together, if the nuts are welded, when the motor came from atomic it had no flexplate bolted on ??

sounds like it's been done later

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  • Member For: 14y 9m 26d
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Specific bolt torque comes from a chart you can buy at any bolt store. im an engineer by trade so I use my own chart at my work. But yes The ford handbook has in total (3) torque specifications for the same adaption! 60Nm, 65Nm, 75Nm. though you will find for my specific bolt its optimum clamp pressure is at 80Nm. Plus use a good fastener glue, one that can withstand shock and heat. You should have no problems after that.

Now to get specific torque steps for your bolt, you must measure: its thread pitch,bolt shank, length and width. also take not of its tensile grade. I.e 1-10 located on the bolt head.

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There is no way I would TIG a 1cm section on a crank bolt. That is getting a bit stupid. Fair enough getting the MIG out and just putting a quick spot weld on but the TIG will just put so much heat into the bolt to render it useless.

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