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Rear Torsion Bar - Broken


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Looking for advice with regards sourcing a pair of Rear Torsion Bars, I am working with a snapped item (broken splined section still in situ 😬). Matt has informed me that they are NLA from Porsche.

Would also appreciate some guidance on what parameters to go by when selecting replacements. I have measured the plain shaft diameter as 24.2mm, 44 splines on the outer body.

Thanks Flappa2

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There always seem to be second hand ones knocking about unless you specifically want new?

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Just now, Phill said:

There always seem to be second hand ones knocking about unless you specifically want new?

Given the severity of the failure I would rather go new Phil. Thankfully I was travelling at very low speed at the time.

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24.1mm on the rears from factory, aftermarket ones seem to start about 26m and up so they will be a bit firmer, about £500 a pair

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11 minutes ago, Type911 said:

24.1mm on the rears from factory, aftermarket ones seem to start about 26m and up so they will be a bit firmer, about £500 a pair

Aftermarket available from UK stockists Matt ?

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Take a look on Design 911 and let me know what type you're after!

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Personally I'd be less concerned about the potential risk failure of good condition (i.e. not excessively corroded or pitted) s/h OEM items than anything that has been Zinc Plated ??!!!!

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1 hour ago, topcarrera said:

Personally I'd be less concerned about the potential risk failure of good condition (i.e. not excessively corroded or pitted) s/h OEM items than anything that has been Zinc Plated ??!!!!

Buy it from D911 it will probably be “used” anyway 😋

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3 hours ago, topcarrera said:

Personally I'd be less concerned about the potential risk failure of good condition (i.e. not excessively corroded or pitted) s/h OEM items than anything that has been Zinc Plated ??!!!!

You might have a different opinion if you had experienced the failure, thankfully I was travelling below 30 at the time.

Unfortunately you won't will not be able to ascertain the condition of a used part by visual inspection and you could be fitting a part 90% through its life cycle without visible defects. For me the lower risk solution is replacement with a new item.

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I know you asked about UK suppliers but Sway-Away solid torsion bars are $375 plus shipping for a pair 23mm or 25mm torsion bars to a fit a 915 fitted 3.2 from Elephant Racing in the US.  I bought my hollow torsion bars (can't remember the brand) from Elephant Racing in 2019 and had no problems with shipping, fitting or, subsequently, with reliability in use.  Obviously, there is a chance of getting stung for duty and VAT,but at £266 at today's exchange rate you have some space to play with price wise.

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Over the years I've read just as many reports on the various forums about failed new bars as old ones. It's a very rare thing either way. I vaguely remember @SilverWT putting how thread about it but could be wrong.

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11 hours ago, jehatwhitland said:

I know you asked about UK suppliers but Sway-Away solid torsion bars are $375 plus shipping for a pair 23mm or 25mm torsion bars to a fit a 915 fitted 3.2 from Elephant Racing in the US.  I bought my hollow torsion bars (can't remember the brand) from Elephant Racing in 2019 and had no problems with shipping, fitting or, subsequently, with reliability in use.  Obviously, there is a chance of getting stung for duty and VAT,but at £266 at today's exchange rate you have some space to play with price wise.

Useful info thanks

4 hours ago, Phill said:

Over the years I've read just as many reports on the various forums about failed new bars as old ones. It's a very rare thing either way. I vaguely remember @SilverWT putting how thread about it but could be wrong.

Ok Phil, I will see what comes to the thread. Thanks

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10 hours ago, Phill said:

Over the years I've read just as many reports on the various forums about failed new bars as old ones. It's a very rare thing either way. I vaguely remember @SilverWT putting how thread about it but could be wrong.

Not me this time, Jonny Hart  had problems with new rear T bars going soft.

I can add some experience though. My 3.2 has second hand 26mm turbo rear T bars which it has run for about 7 years of hard use (including track) without issue. If second hand bars are blemish free i.e. no scratches at all in the paint on the shafts there is a good bet they will last. They are handed though (marked with a "L" or "R" on the end face) and putting them on the wrong side will be a problem.

Mark

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4 hours ago, Wingnonut said:

Jees! You were lucky to get that out!

Plenty to talk about next road trip

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