GTM 1.5 upgrade

Mike@GTM · 04-29-2013, 01:15 PM

The Rotrex compressor housings are aluminum and there aren't any helicoils for the 6 bolt holes. That's why the torque spec is only 11 ft-lbs. It sounds like the bolt pulled the threads out of the aluminum (resembling a helicoil). Helicoils are generally made from steel and have locking tabs on them. So far, there hasn't been a need to helicoil anything on our kits.

Have you checked to make sure that the torque wrench you are using is calibrated correctly for low torque? Some torque wrenches may be within spec at mid to high torque levels, but not low torque.

pokeyl · 04-29-2013, 02:59 PM

Quote:

Originally Posted by Mike@GTM

The Rotrex compressor housings are aluminum and there aren't any helicoils for the 6 bolt holes. That's why the torque spec is only 11 ft-lbs. It sounds like the bolt pulled the threads out of the aluminum (resembling a helicoil). Helicoils are generally made from steel and have locking tabs on them. So far, there hasn't been a need to helicoil anything on our kits.

Have you checked to make sure that the torque wrench you are using is calibrated correctly for low torque? Some torque wrenches may be within spec at mid to high torque levels, but not low torque.

All other were good, could hasve been oversized drilled before tap... Many things could have been the problem. It's fixed now.

pokeyl · 04-29-2013, 03:17 PM

My oil cooler solution, this is the long filter. I will be going back to the standard hight one! It will not stick out below the frame.

pokeyl · 05-24-2013, 08:32 AM

This oil cooler is working great, no problems with air flow, less than $200 total, no cutting inder fender liner.

04-29-2013, 03:17 PM	#3 (permalink)
pokeyl Track Member Join Date: Nov 2010 Location: DFS Posts: 901 Drives: ??? Rep Power: 56	My oil cooler solution, this is the long filter. I will be going back to the standard hight one! It will not stick out below the frame. __________________ It's not my fault I'm old, I was born a very long time ago!

05-24-2013, 08:32 AM	#4 (permalink)
pokeyl Track Member Join Date: Nov 2010 Location: DFS Posts: 901 Drives: ??? Rep Power: 56	This oil cooler is working great, no problems with air flow, less than $200 total, no cutting inder fender liner. __________________ It's not my fault I'm old, I was born a very long time ago! Last edited by pokeyl; 05-24-2013 at 08:34 AM.

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04-29-2013, 01:15 PM	#1 (permalink)
Mike@GTM Not an active Vendor. DO NOT BUY Join Date: Sep 2009 Location: California Posts: 391 Drives: '13 Hot Lava FR-S Rep Power: 18	The Rotrex compressor housings are aluminum and there aren't any helicoils for the 6 bolt holes. That's why the torque spec is only 11 ft-lbs. It sounds like the bolt pulled the threads out of the aluminum (resembling a helicoil). Helicoils are generally made from steel and have locking tabs on them. So far, there hasn't been a need to helicoil anything on our kits. Have you checked to make sure that the torque wrench you are using is calibrated correctly for low torque? Some torque wrenches may be within spec at mid to high torque levels, but not low torque.