Clay Thompson
New Member
- Joined
- Feb 3, 2002
- Messages
- 217
Forward Drums are not the same!
Regarding a PTS forward drum versus any other that I am aware of on the market you asked;
"What is different about them? Both inputs are 300M. Both drums are stockers with the 300M welded to it, heat treated and reinforced. Please explain what makes yours superior."
I copied the forward drum section from
http://www.turbobuick.com/forums/showthread.php?s=&threadid=31365
The post is listed near the top of the trannie section and contains some of the best FREE performance information about the 2004R I've been able to find anywhere on the web. I printed the first version two or three years ago and the newer version thats up there now to guide me through my 2004R rebuilds--I've done three--but now I'm going to let a pro do the next one with all the best parts.
*FORWARD DRUM:
Here is where you get the most debate. Some have broken in the 14 second cars others live in the nines. All I can say is the people of India (where the metals came from for GM) must be some very inconsistent people. 1800 series hi carbon steel is what they were made of. Very close tensile and yield strengths (BAD). Fatigue also plays a factor. Someday hold one up and look at the spline area. All the power runs through that piece. Detonation and traction are what load and unload. When it fails, it is very fast and very violent. Now processes have been tried, hardening, annealing, softening, tigging and cryogentics. All to which have been to no avail. PTS came up with a Billet Drum Shaft and a way to fuse it to the drum and reinforcing the drum during this process. During testing no other "process" passed the 500 ft LB rating. The billet ones went to 1350 ft lbs, and Boeing and a subcontractor to them, did these tests. So numbers can be presented. We also replace the plastic thrust washer with a bearing. Oil and Lube to direct clutches is improved also. Always use hand fit teflon one piece solid teflon rings. Any brand name clutch will do. For hop up, we use Alto Red Eagle cluthes here.(No Kolene steels , stock is fine) *Note: It is not needed but if extra clutch is to be added in this clutch, the front planet ring gear must be cut down and clearenced and top apply pressure plate must be relieved also or driving forward in neutral and bind in reverse will occur. As time goes on metal will appear in the oil also.
Recommended use, 12.0 and under with heavy foot, or in heavy cars such as changeovers.
Has anyone told you that there is a better forward drum out there? I building the crate to ship my recently-broken 2004R and want to send it to the best. Please let me know quickly!
Regarding a PTS forward drum versus any other that I am aware of on the market you asked;
"What is different about them? Both inputs are 300M. Both drums are stockers with the 300M welded to it, heat treated and reinforced. Please explain what makes yours superior."
I copied the forward drum section from
http://www.turbobuick.com/forums/showthread.php?s=&threadid=31365
The post is listed near the top of the trannie section and contains some of the best FREE performance information about the 2004R I've been able to find anywhere on the web. I printed the first version two or three years ago and the newer version thats up there now to guide me through my 2004R rebuilds--I've done three--but now I'm going to let a pro do the next one with all the best parts.
*FORWARD DRUM:
Here is where you get the most debate. Some have broken in the 14 second cars others live in the nines. All I can say is the people of India (where the metals came from for GM) must be some very inconsistent people. 1800 series hi carbon steel is what they were made of. Very close tensile and yield strengths (BAD). Fatigue also plays a factor. Someday hold one up and look at the spline area. All the power runs through that piece. Detonation and traction are what load and unload. When it fails, it is very fast and very violent. Now processes have been tried, hardening, annealing, softening, tigging and cryogentics. All to which have been to no avail. PTS came up with a Billet Drum Shaft and a way to fuse it to the drum and reinforcing the drum during this process. During testing no other "process" passed the 500 ft LB rating. The billet ones went to 1350 ft lbs, and Boeing and a subcontractor to them, did these tests. So numbers can be presented. We also replace the plastic thrust washer with a bearing. Oil and Lube to direct clutches is improved also. Always use hand fit teflon one piece solid teflon rings. Any brand name clutch will do. For hop up, we use Alto Red Eagle cluthes here.(No Kolene steels , stock is fine) *Note: It is not needed but if extra clutch is to be added in this clutch, the front planet ring gear must be cut down and clearenced and top apply pressure plate must be relieved also or driving forward in neutral and bind in reverse will occur. As time goes on metal will appear in the oil also.
Recommended use, 12.0 and under with heavy foot, or in heavy cars such as changeovers.
Has anyone told you that there is a better forward drum out there? I building the crate to ship my recently-broken 2004R and want to send it to the best. Please let me know quickly!