There are 4 packs of springs in the transgo box. I just rather ask the questions now then put a post up in a week or 2 saying how my new tranny doesn't work correctly But like I said a few people said to alternate the taper but they all looked straight to me I found the pack that fit mine as per the picture in the vague instructions (type 3) and installed them. I was looking at the big round one in the center of the input shaft held in by a circlip. Im not thinking of the 5 3/4 clutch return springs on the side of the clutch packs. I only ask cause I would never press anything like a shaft out of an engine that had what looked like checkball capsule in the end ( frankly I never have to press anything out of an engine lol) Learning is doing not sending it to a shop and paying someone. I've fitted supercharger and kitsturbo upgrades to AMG, BMW's and Audi and often service cylinder heads and time motors but I've been trained to do that and not trained to do this. And a factory certified BMW and Mercedes technician. I am very selective in terms of passing/ failing the drums and being suitable for use.***ĭefinitely a noob to transmissions but I am an experienced mechanic with 14 years experience. ***NOTE: I always perform metallurgy analysis, the Maganaflux equivelent for aluminum, and X-ray all of the drums. and I do NOT have any failures with the Sonnax collar. I seem to run configurations that are most likely more violent than what Maroon Monster would do. areas of the drum close to the Sonnax collar as still vulnerable to cracking if stressed enough. The entire drum is the same aluminum alloy throughout.įrom what Maroon Monsta said it sounds like he finds the drum cracking closer to the area housing the 3-4 clutch piston, than the area where the turbine shaft splines into the drum.īeing the metallurgy is the same. However, I am not surprised to hear that the drums do still fail. With the Steel re-enforcement sleeve installed, where did you see the drum fail after that? I have never had a failure here with this, and none of my customers (as far as I know) have ever had a failure.I have not had a drum fail yet in any of my customers transmissions either. Do not install the little restrictors in the reverse input piston. Use Teflon bushings in the pump, reverse input drum, extension housing, and the Sonnax extra wide bushing in the rear sun gear. Your drum must be flat in the area wear the band rides, or you will need a new oem drum. Use the Borg Warner Hi-Energy 2-4 band, as it is the best one out there in terms of durability, wear, and shift quality. 035", and the band clearance at the minimum. I use eight Borg Warner Hi-Energy clutches in all of my Heavy Duty and Street/Strip 700R4 kits and builds. The hole sizes I recommended on the separator plate will be fine here, as long as you are using the Corvette servo. Yes, I told you to alternate the springs on spring installation, to keep them from leaning over. However, these drums are being made out of cast aluminum. The sleeve when installed correctly will prevent the input shaft from breaking open the aluminum drum. "I completely understand what you mean about moving around the weak points." The instructions were confusing for that. That still the caseĪnd in the transgo HD2 kit there is one peice I didn't use that I think involved drilling a piston and installing 2 plugs. I remember a few people saying when you install the spring kit you have to alternate direction of installation to stop them falling over. There is myth floating around they had them from factory but mine definitely did not I completely understand what you mean about moving around the weak points I though a lot of people used them but I'll take your advice. I'm surprised about the reinforcement sleeve. Thats what the part shop quoted in the kit anyway Install a new pump bushingSweet ll just go 7 frictions then. Transgo 7-cs spring kit.do NOT screw with the capsule in the input drum.ĭrive a 2nd sun gear bushing in on top of the stock bushing (so there will be 2 stacked bushings) into the sun gear. If you don't already have one, add a "corvette" ratio servo. Most of them get a little concave with mileage. MAKE SURE your reverse input drum is smooth and flat. 004 clearance per clutch is a good starting point. Plus.if you install it wrong, you'll damage the drum and possibly even totally destroy it as you install.įor the 3/4's I recommend 7 frictions for almost all setups.but if you want 8 you can. It doesn't make the drum any just moves the failure point around. Please register or login to enable Dark Mode.ĭon't do the reinforcement sleeve.Hot Rod Power Tour/ Pump Gas Drags/ Drag Week.Gen 5 Camaro Tuning, Diagnostics, Dyno results.
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