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MikeJinCO
Joined: 08 Jun 2010 Posts: 1228 Location: Maysville, Colorado
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Posted: Wed Dec 04, 2019 3:34 am Post subject: ARP Rod Bolts Group buy? |
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I have been thinking it might be time to get some more rod bolts made by ARP. I think I could do it thru my local motor machinist if I handled all the details and money. I have no idea of the price per set last time or the minimum number of sets( I believe it was 10).
I'm retired and will be home for several months so have time to deal with it.
Let me know if you have interest and if 10 sets come up I'll pursue it. I would be in for 1. _________________ Mike
'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild) |
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Cedric
Joined: 27 Aug 2004 Posts: 2608 Location: Sweden
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Posted: Wed Dec 04, 2019 4:58 am Post subject: |
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Im interested in a set. Could it be a good idea to check with the UK club if there are any interested guys there to get to 10 pcs.? _________________ 1980 924 Turbo
www.instagram.com/garagecedric/ |
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924RACR
Joined: 29 Jul 2001 Posts: 8804 Location: Royal Oak, MI, USA
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Posted: Wed Dec 04, 2019 4:58 am Post subject: |
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I'd definitely be in for one, maybe two depending on price. _________________ Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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Fifty50Plus
Joined: 28 Feb 2008 Posts: 1354 Location: Washington DC area
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Posted: Wed Dec 04, 2019 6:35 am Post subject: |
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I'd be in for a couple sets. _________________ 1979 924 NA race car
1982 924 NA race car - Sold
1982 924 Turbo almost a PoS
1981 924 Turbo a real PoS, new engine
1982 924 Turbo nice body, blown engine
1972 911 E race car - going to Vintage
Various 944s to become IT-S race car |
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GregSC
Joined: 19 Jul 2008 Posts: 122 Location: Lovely, KY
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Posted: Wed Dec 04, 2019 6:47 am Post subject: |
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I'd be in for at least one set. _________________ 1981 931 |
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safe
Joined: 18 Mar 2017 Posts: 586 Location: Sweden
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Posted: Wed Dec 04, 2019 8:01 am Post subject: |
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Depending on price, yes I could be interested, never know when you want to build another engine. Ideolas price was $285 from an invoice I have. |
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MikeJinCO
Joined: 08 Jun 2010 Posts: 1228 Location: Maysville, Colorado
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Posted: Wed Dec 04, 2019 8:08 am Post subject: |
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How would I get in touch with the UK group?l _________________ Mike
'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild) |
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Fasteddie313
Joined: 29 Sep 2013 Posts: 2596 Location: MI
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Posted: Wed Dec 04, 2019 9:12 am Post subject: |
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Maybe..
Will they be eternally reusable like ARP head studs? _________________ 80 Turbo - Slightly Modified |
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MikeJinCO
Joined: 08 Jun 2010 Posts: 1228 Location: Maysville, Colorado
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Posted: Wed Dec 04, 2019 9:23 am Post subject: |
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Yes, they are reusable. _________________ Mike
'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild) |
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Fasteddie313
Joined: 29 Sep 2013 Posts: 2596 Location: MI
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Posted: Wed Dec 04, 2019 9:26 am Post subject: |
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Can anyone post the specs of these bolts here?
Diameter, pitch, length and stuff? _________________ 80 Turbo - Slightly Modified |
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Fifty50Plus
Joined: 28 Feb 2008 Posts: 1354 Location: Washington DC area
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Posted: Wed Dec 04, 2019 9:35 am Post subject: |
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I just looked to see if I had another set that I got from Dan. Nope. Now I'm committing to three sets. _________________ 1979 924 NA race car
1982 924 NA race car - Sold
1982 924 Turbo almost a PoS
1981 924 Turbo a real PoS, new engine
1982 924 Turbo nice body, blown engine
1972 911 E race car - going to Vintage
Various 944s to become IT-S race car |
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safe
Joined: 18 Mar 2017 Posts: 586 Location: Sweden
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Posted: Wed Dec 04, 2019 6:03 pm Post subject: |
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Fasteddie313 wrote: | Can anyone post the specs of these bolts here?
Diameter, pitch, length and stuff? |
From the Ideola website:
"OEM replacements for the Porsche 924 / 931 2.0L rod bolts are NLA. Fortunately, in 2008, we were successful in commissioning an aftermarket replacement for the stock units, which are now a catalog item from ARP.
The part number is AR336. These units are made from a higher grade material (ARP2000) than OEM replacement due to the demand in the aftermarket for a rod bolt suitable on higher-than-stock forced induction applications. These rod bolts and are rated at 220 ksi."
"924 2.0L Nuts for Rod Bolts
Set of 8 10mm x 1.0 12-point nuts suitable for the 924/931 2.0L AR336 rod bolts." |
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Carrera RSR
Joined: 08 Jan 2010 Posts: 2309 Location: Somerset, UK
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Posted: Wed Dec 04, 2019 6:19 pm Post subject: |
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MikeJinCO wrote: | How would I get in touch with the UK group?l |
Done ...... https://porsche924.co.uk/forum/viewtopic.php?f=14&t=34022 _________________ 1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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Juho
Joined: 03 Oct 2018 Posts: 377 Location: Finland
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Posted: Wed Dec 04, 2019 7:27 pm Post subject: |
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Might be intrested in a set, how big of a upgrade they are and are they worth the price? |
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Carrera RSR
Joined: 08 Jan 2010 Posts: 2309 Location: Somerset, UK
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Posted: Wed Dec 04, 2019 8:57 pm Post subject: |
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Juho wrote: | Might be intrested in a set, how big of a upgrade they are and are they worth the price? |
On a stock NA, they are recommended to be replaced ..... but are not always needed and you could reuse the old. Depends on your state of risk aversion.
On a stock turbo, recommended to change bolts on rebuild, but if you are feeling lucky, don't over rev or overly boost, you may get away with reusing. Not the best advice.
On a high revving NA or over boosted turbo you must replace the bolts or internal damage may ensue.
Stock bolts would suffice but they are long time NLA. So ARP is the only option except they are not a stock item and have to be bought in minimums of 10 sets direct from ARP. Not necessarily seen as an upgrade.....but ARP does sell themselves as superior to OEM. No idea if this is true on rod bolts spec? But they are your only option.....so you have to pay the price of new bolts and nuts. Think I paid circa $200 on the last set I bought with nuts.
To boost order numbers, may be worth contacting Mittelmotor who stock them but do run out of supplies. I think EBS Racing also do/did? _________________ 1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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