Manual Transmission Problems with Boost?

[mikestangs]

I was talking to a guy at the shop the other day about my plans to put a Procharger on my car. My 15 GT has the manual tranny. He said if you go over 600 hp at the wheels with the manual tranny, you'll destroy it in no time. He said I'd need to upgrade to something like a Tremec if I went much above 600 hp. I see a lot of talk on the forums and YouTube videos showing tons of our cars running well over 650-700 rwhp and haven't heard much about the manual tranny failing. Those of you that are boosted, what's your experience?

Sponsored

 

[BrazukaV8]

I was talking to a guy at the shop the other day about my plans to put a Procharger on my car. My 15 GT has the manual tranny. He said if you go over 600 hp at the wheels with the manual tranny, you'll destroy it in no time. He said I'd need to upgrade to something like a Tremec if I went much above 600 hp. I see a lot of talk on the forums and YouTube videos showing tons of our cars running well over 650-700 rwhp and haven't heard much about the manual tranny failing. Those of you that are boosted, what's your experience?

Car has 13k miles. Been boosted since 5k miles. Car makes 660rwhp 540rwtq I don't baby the car haven't had a problem yet. A friend of mine making 751rwhp with rxt clutch haven had a problem. Also know a guy that was stock and broke the tranny. Another guy bone stock number 8 piston blew. Honestly hard to know when your parts gonna give out. Just be prepared for the worse.

 

[venumous]

Only 700 miles on mine so far (3k total) but no issues yet. If it goes, time to upgrade. I have an RXT ready to go in as I'm sure that is going to be the first thing to go (though stock clutch is holding nicely so far). I don't care how easy the A6 is to make fast at the track. I spend approximately 0.00001% of my time there.

 

[FIVE_LITER]

It's a crap shoot with the mt82. Some last, some don't even last at stock power levels with no abuse. Don't be afraid, throw some boost at it and have fun. It something breaks that just means you get to upgrade.

 

[Jay-rod427]

All depends on driving/shifting style.

 

[WhiteyDog]

So far mine is holding up well with the ripping around that I do, which isn't often enough. But I'm not beating the sh*t out of it either.

 

[mikestangs]

Thanks for the responses! Sounds like I don't need to be too concerned about it. I don't abuse my car as it is and don't expect that to change when I add boost. And if something does break, I get to upgrade to stronger parts!

 

[2-tone]

I abuse mine regularly and its holding up so far. I even blew up a trac Loc and ring and pinion at the track. The Trans is still hanging in there. This is a Whipple 2.9 on e85 with a rxt clutch. I will probably send it to calimer over the winter to make it a bit stronger.

 

[dsp4848]

I was talking to a guy at the shop the other day about my plans to put a Procharger on my car. My 15 GT has the manual tranny. He said if you go over 600 hp at the wheels with the manual tranny, you'll destroy it in no time. He said I'd need to upgrade to something like a Tremec if I went much above 600 hp. I see a lot of talk on the forums and YouTube videos showing tons of our cars running well over 650-700 rwhp and haven't heard much about the manual tranny failing. Those of you that are boosted, what's your experience?

I'm having this exact same dilemma right now. I'm an engineer so I tend to analyze the hell out of anything I buy and want to understand it more. Just bought a Paxton kit (not installed though) and I'm worried about the MT82 because of all the horror stories. However, like you said, there's quite a few people running boost with a manual transmission and you usually only hear about the horror stories and never from the people whose transmission has held up great. Yeah the MT82 has a bad reputation from the S197 years, but Ford did revise the synchros for the S550, so we've at least got that in our favor.

Aside from how the MT82 is physically built, I'm a firm believer that your driving style plays a huge role. It really does seem that this transmission likes to be driven with some finesse, so if somebody is power shifting it or dumping the clutch at 6k RPM, they probably should go ahead and start saving for a new transmission.

Another thing I've heard, but don't have any personal evidence for it that going with too aggressive of a clutch doesn't bid well for the MT82. Ceramic clutches tend to grab harder than organic clutches, so to me it would seem that there's more of a shock to the transmission, especially when driving aggressively. Having just a tad of slip while engaging the clutch spreads out that force applied over a slightly longer time.

Anyway, that's just my .02 based off of some reading I've been doing lately. Would love to hear more (hopefully positive) MT82 experiences from other members.

 

[whatsup62]

Another thing I've heard, but don't have any personal evidence for it that going with too aggressive of a clutch doesn't bid well for the MT82. Ceramic clutches tend to grab harder than organic clutches, so to me it would seem that there's more of a shock to the transmission, especially when driving aggressively. Having just a tad of slip while engaging the clutch spreads out that force applied over a slightly longer time.

So I am on number two. NA for 7k miles, boosted for 2500 miles before she went. Still not sure what broke...sitting in garage not tore apart yet. Put another stock one in it and have about 2K on it now. From what others have said both in here and direct from some builders, I had/have the recipie for disaster. - Drag radials, RXT, stronger half shafts and driveshaft. Trans weaker than rear. The RXT does not give like a organic clutch. I do not power shift but I do speed shift it which shocks the drivetrain. I am working on different shifting method as well as considering sending the broken one in for a stronger rebuild.

 

[JohnG]

I have about 40 1/2 mile passes on my mt82 and most of them are with north of 700rwhp (RXT clutch/flywheel).

 

[mustang1]

the synchros are probably not designed to support power shifts or speed shifts. Shift normal to minimize problems. GT350 transmission has a number of improvements such as "power-honed gears, air-to-oil transmission cooler and carbon-bronze triple-cone synchronizers." And a dual mass flywheel. "The dual-mass flywheel enhances engagement smoothness, reduces noise, vibration and harshness, and allows for the elimination of damping springs in the hub of the clutch"

http://www.mustangandfords.com/news/1509-2016-shelby-gt350-gets-beefed-up-tremec-tr-3160-six-speed/
2016 Shelby GT350 Gets Beefed Up Tremec TR-3160 Six Speed

 

[Major League Infidel]

I killed 4th in mine with a JT-B. Swapped to a 6060 and couldnt be happier.

 

[DougRed]

the synchros are probably not designed to support power shifts or speed shifts. Shift normal to minimize problems. GT350 transmission has a number of improvements such as "power-honed gears, air-to-oil transmission cooler and carbon-bronze triple-cone synchronizers." And a dual mass flywheel. "The dual-mass flywheel enhances engagement smoothness, reduces noise, vibration and harshness, and allows for the elimination of damping springs in the hub of the clutch"

http://www.mustangandfords.com/news/1509-2016-shelby-gt350-gets-beefed-up-tremec-tr-3160-six-speed/
2016 Shelby GT350 Gets Beefed Up Tremec TR-3160 Six Speed

^this^ " the synchros are not designed for power shifting or speed shifts."

 

[BrazukaV8]

I killed 4th in mine with a JT-B. Swapped to a 6060 and couldnt be happier.

What's the cost of a 6060 if u don't mind me asking

Sponsored