Two ARP Main Studs Shorter/Sitting Lower Than Others?
#1
Senior Member
Thread Starter
Join Date: Jun 2022
Location: Aliso Viejo, CA
Posts: 1,373
Total Cats: 264
Two ARP Main Studs Shorter/Sitting Lower Than Others?
Going through my block on my VVT motor before bolting the oil pan on and noticed two of the ARP main studs seem to be sitting lower than the others (two closest to the camera in attached photo). I assembled everything according to ARP's directions. Finger tight on the studs, lube on all the interfaces, 60lb/ft on the nuts in three stages. Used a fancy pants Snap-on torque wrench so the torque measurements should have all been consistent. Are two of the studs shorter than the others and supposed to be situated in one of the mains specifically? I made sure all the bores were clean before installing and I don't remember any of the studs being shorter than the others but this has be second guessing myself. Help/suggestions anyone?
#2
Senior Member
Thread Starter
Join Date: Jun 2022
Location: Aliso Viejo, CA
Posts: 1,373
Total Cats: 264
I now realize how stupid that question was. I removed all the nuts, main caps, and studs. Obviously all the studs were the same length. Gave each of the bores another cleaning with a brush and some brake cleaner and compressed air. Looked inside each of the female threads with a light, doesn't look like there's any other debris in there. Finger tightened studs again and followed the torqueing procedure. Studs all sit at the same height still. At this point, I'm assuming a couple of the female threads in the block were drilled to different depths.
#4
Senior Member
Thread Starter
Join Date: Jun 2022
Location: Aliso Viejo, CA
Posts: 1,373
Total Cats: 264
That's about what I figured. I cant imagine overdrilling those holes by a few millimeters makes enough difference in block strength for the manufacturer to care. Could've grabbed a depth gauge to really get scientific with it but everything is back together now and my mind is at ease. Now onto the next questionable thing I find while putting this motor together.
Thread
Thread Starter
Forum
Replies
Last Post