Rennlist - Porsche Discussion Forums

Rennlist - Porsche Discussion Forums (https://rennlist.com/forums/)
-   964 Forum (https://rennlist.com/forums/964-forum-59/)
-   -   replacing rod bolts without splitting the case. (https://rennlist.com/forums/964-forum/785391-replacing-rod-bolts-without-splitting-the-case.html)

creaturecat 11-09-2013 12:28 PM

replacing rod bolts without splitting the case.
 
anyone else do this?
Apparently my (ex) independent repair guy did.
I have the receipt.

jaguarman 11-09-2013 04:29 PM

Now I know what they mean when they say to a mechanic, "you must be a magician"

Keith

Geoffrey 11-09-2013 06:48 PM

Yes, it is possible (and common) to replace the rod bolts without splitting the case. However, you can only use a torque wrench to torque them, you cannot use a stretch gauge which (in my opinion) is the correct way to torque the rod bolts. Given that the engine was assembled using a torque wrench, there probably is no negative to doing using only the torque wrench method.

creaturecat 11-09-2013 07:49 PM

thanks guys
is it easy enough to change the rod bearings at the same time?

Steve Weiner-Rennsport Systems 11-09-2013 11:18 PM

Yes, we do this all the time.

The rods get resized (rebushed if needed) and ARP bolts installed. We tighten the bolts to the specified stretch spec and measure the torque required to reach that value. If new bearings are to be installed, the rod journals are measured so the rods can be adjusted for correct bearing fitment.

Once re-installed back onto the crank, these are tightened to the measured torque value above to ensure proper tension & stretch on the bolts.

creaturecat 11-10-2013 01:03 PM

thanks Steve.
They charged me for splitting the case.
85 hours of labour for a reseal. 16000 dollars
The case was not split. Hopefully the rod bolts and bearings were actually replaced.

And it leaks like a sieve.

Steve Weiner-Rennsport Systems 11-10-2013 01:51 PM


Originally Posted by creaturecat (Post 10894910)
thanks Steve.
They charged me for splitting the case.
85 hours of labour for a reseal. 16000 dollars
The case was not split. Hopefully the rod bolts and bearings were actually replaced.

And it leaks like a sieve.

O-M-G.

PM me about who did this, please.


All times are GMT -3. The time now is 05:23 AM.


© 2024 MH Sub I, LLC dba Internet Brands