View Full Version : WTF: Tranny minus 4th Gear = GAY
turbotalon1g
10-13-2009, 11:29 AM
I thought it was third more than forf. ESP at that power level
blackrosenova400
10-13-2009, 11:47 AM
Yeah, at these power levels, the trans case actually starts flexing, causing the gears from the counter shaft and input shaft to pull away from each other. Now the gear contact is on a weaker part of the tooth. Its why I shimmed up my counter shaft and input shaft up tighter to help prevent this, but does put more load on the bearings obviously.
Min lasted 38k: 21k miles stock, 9k miles@266whp/240wtq, 8k miles @305-320whp/300-320wtq, and about 10 parking lot launches. The parking lot launches are what ultimately killed it. I drive aggressive too, but ultimately, launching kills stock clutches faster than anything else.
I gotta say though, I didn't realize that 4th gear on DSMs pooped out at 400wtq. Suck.
desolate
10-13-2009, 11:57 AM
Wow sucks to hear.. shit happens.. hopefully you fix it and get it back up!
sleepydsm
10-13-2009, 12:03 PM
Its directed towards anyone questioning the maintenance I perform on my cars, including you or anyone else. These cars break enough on their own, there is no reason to skimp on something so cheap and easy as drivetrain fluids.
Haha are you implying I was skimping? I used what I thought/felt was a good fluid. 2 years ago John Shep said that fluid was fine. And I highly doubt this failed because of fluid choice. I actually never liked the Redline cocktail. I do have redline heavyduty shockproof in he rear end and transfer case!
Anyways, I will eventually pull the tranny, ship it to Shep. If it's an arm and a leg, I'll just throw a stock tranny on. If it just costs an arm, I might spend a leg too and turn it into a "stage 4"
Or maybe I could just try to fix it myself hahaha. I've taken one of these apart nicely, it wasn't a big deal. Putting it back together and shimming it right, another story...
goodhart
10-14-2009, 10:24 AM
Or maybe I could just try to fix it myself hahaha. I've taken one of these apart nicely, it wasn't a big deal. Putting it back together and shimming it right, another story...
If you do this LET ME KNOW!! That way maybe we can do our together.
Kracka
10-14-2009, 10:42 AM
Haha are you implying I was skimping?
Not at all. From what I can tell it seems like you take care of your car, and like you said you were going based on information you thought was good from a supposedly reliable source.
I honestly for the life of me can't figure out why Shep continues to recommend the BG Synchroshit II for people to use. Its too thin and it sheers far too easily to properly protect a transmission. Fast shifting with perfect synchros? Yes. Long-term durability and protection? No.
At-Least-It's-An-Evo
10-16-2009, 08:46 AM
I honestly for the life of me can't figure out why Shep continues to recommend the BG Synchroshit II for people to use.
I'd probably take his word over yours.
Kevin, when's stage: dogbox comin!? Maybe stage: sc300 trade? :)
blackrosenova400
10-16-2009, 01:11 PM
Uh Shep does not recommend BG Syncroshift.
Taken directly from his sight
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There are several gear oils that will work depending on horsepower or intended use. For most transmissions we recommend Redline MT90 or Pennzoil Synchromesh. For drag use or high horsepower cars please contact us. Please let us know if you need any Redline gear oil.
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I run two quarts of Mt-90 for friction modifier, and two quarts of lightweight shockproof. Overfilled on purpose so that the gears dont pull the sump dry from using thicker lubricant. I may run Heavyweight in the summer.
Even if Shep recommended Syncroshift, I wouldn't use it but on a stock dsm.
Kracka
10-16-2009, 01:32 PM
Good to see he finally changed his recommendation! That Penzoil stuff is no good either though b/c it sheers just as badly (its a GM fluid designed for a specific truck transmission).
Info that agrees with what I've been saying (this is all pretty new info on TRE's site too): http://www.teamrip.com/manual_transmission_gear_oil_recommendation_info.h tml
Kracka
10-16-2009, 01:34 PM
I'd probably take his word over yours.
Be my guest.
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