| 924S-944-951 Rod
Bolt Set
Rod
bolt & nut set for all 924S/944/951
924 2.0L Rod Bolt Set
The
924 2.0L rod bolt (AR336) is not available anywhere else. We are
currently running a group buy for this item. Nuts are NOT included with
rod bolt set. NOTE: Limited availability, please inquire before ordering.
Rod Bolts
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.
AR336 Rod
Bolts for Porsche 924 & 931 2.0L
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.
Closeup of
AR336 Rod Bolts and a 924/931 stock rod
While
these are now a catalog item, they are not stocked by ARP or any other
reseller we are aware of. In the meantime, we would be happy to
coordinate another group buy
if there is sufficient interest.
ARP
also provides a variety of product available for the 924S, 944, 951 and
928 which we have also requested permission to resell. | | 924S-944-951
Head Studs
Includes
washers & 12-point nuts. NOTE: Limited availability, please inquire before ordering.
924
Head Studs
Includes
washers & 12-point nuts.
Head
Studs
There is also a lot
of debate about replacing the stock head bolts any
time they are untorqued (e.g. during a top-end rebuild) due to concerns
over the effect of stretching and restretching on the tensile strength
of the bolt. The Porsche Factory Service Manual says to replace with
new.
ARP
251-4701 Head Studs for Porsche 924 & 931 2.0L
In
mid-2008 we learned from a friend that the ARP head studs made for the
Ford Cosworth turbo engines are a direct-fit replacement for the stock
924/931 head bolts. The ARP part number is 251-4701. In addition to the
2.0L platform, we have requested permission to resell all fastener
products for the 924S/944/951 and 928 lineups.
Closeup
showing Allen key head in ARP head studs
Benefits
- Allen
key head for easy installation, unlike Raceware studs or OEM bolts
- Less
expensive than Raceware or OEM for OEM-or-better quality
- Easier assembly
of the engine with the cylinder head and gasket assured of
proper alignment
- More
accurate and consistent torque loading than OEM bolts
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