924Board.org

[Ian89C4]

Gents,

I am very sure that I have to replace them on a rebuild, but so far all I have been able to source are the rod bolt nuts, even Porsche has a limited quantity of those.

Questions: Where can I source new rod bolts?

I tried through Pelican and another wholesale Porsche parts dealer and they said that Porsche was out. I have tried everywhere, but no luck. I have not tried DC auto, due to the fact that if they have to order them he will likely have a as hard a time as I.

Car will be a race car......so any leads towards ARP or Raceware would be awesome.....couldn't find any of those either.

Thanks,

Ian
_________________
Ian Edgerly
North Carolina

Current:
1981 924 SCCA/ChampCar Weissach Race Car ("Serenity")
1987 924S ChampCar Endurance Car ("Der Weg")
1980 924 Euro ("Wahala")

[StienbargerR]

I think ideola can help you with finding a set. I think I saw on his website that he is able to get them, but supply is limited.

garage.ideola.com is the website.

Ryan
_________________
1978 924 NA
-250lb lowering springs, Euro Pistons

[Martijnus]

You can get ARP ones, but you're certainly not obliged to replace them when rebuilding. I'd only replace them if they have visible damage or you know they have been stressed.

Remember that rod bolts are important when going high in revs... the valve train probably dies faster than the rod bolts.
_________________
"Rule: Turbo's make torque, and torque makes fun." (C. Bell)

924 "50-jahre", 1981.
MSII/extra, LPG, ITB's, 5lug.
To be turbo'ed in a while.
Killed her at the Nurburgring, Porscheless at the moment

[the_mad_electrician]

[Ian89C4]

I probably could leave them in there and just replace the nuts, but the line next to the rod bolt in the shop manual says "always replace" - and I think if I don't it will haunt me every time I take that car out on the track. Agreed though that the valve train will wear out faster.

I know on the 911's the rod bolts are designed to stretch quite a bit and they require 2 torque downs to achieve that. The shop manual for the 924 says it only needs one at 43 ft/lbs but I don't think I am going to chance it.

Thanks for the feedback
_________________
Ian Edgerly
North Carolina

Current:
1981 924 SCCA/ChampCar Weissach Race Car ("Serenity")
1987 924S ChampCar Endurance Car ("Der Weg")
1980 924 Euro ("Wahala")

[Rasta Monsta]

If you want to follow the instructions in the FSM (I know, who would?), they should be replaced.
_________________
Toofah King Bad

• WeiBe (1987 924S 2.5t) - 931 S3

[Martijnus]

They aren't 'stretch' bolts (or whatever they're called), so replacing them everytime you loosen the nuts is bs.
Which manual is exactly the one that says this? If it is the original porsche one, I can understand they are NLA
Remember that manufacturers have a win-win situation by mentioning such stuff... they sell their parts, and they can't be held responsible if a rod bolt would fail, no matter how slight the chance is.

Some engines do require replacement of rod and main bolts though... but there aren't many.

Edit: I see Ian already mentioned stretch bolts they indeed combine torque + angle.
_________________
"Rule: Turbo's make torque, and torque makes fun." (C. Bell)

924 "50-jahre", 1981.
MSII/extra, LPG, ITB's, 5lug.
To be turbo'ed in a while.
Killed her at the Nurburgring, Porscheless at the moment

[Rasta Monsta]

They do indeed stretch on install, and the Factory Service Manual (printed long before the parts were NLA) says they are not to be reused.

I appreciate your cynicism, but given the diffculties getting bearings, etc, for these motors these days, it seems like a foolish risk to take.
_________________
Toofah King Bad

• WeiBe (1987 924S 2.5t) - 931 S3

[gla924sem]

I think I got Ideola's last set

[Ian89C4]

Nope, I just got them
_________________
Ian Edgerly
North Carolina

Current:
1981 924 SCCA/ChampCar Weissach Race Car ("Serenity")
1987 924S ChampCar Endurance Car ("Der Weg")
1980 924 Euro ("Wahala")

[Martijnus]

[ideola]

[the_mad_electrician]

[Martijnus]

[Rasta Monsta]

FSM comes from the factory engineers, who specified the materials used for EVERY FASTENER ON THE CAR.

Smarter than Stuttgart? By all means, ignore the manual. . .but don't try to convince others to do the same.
_________________
Toofah King Bad

• WeiBe (1987 924S 2.5t) - 931 S3