13ALPHA

I recently had the 3250 DD installed, along with the goodies I put in. I have had for a while now, lots of city driving so I decided to do a small boosted launch, I tryed about 8-10 psi, ended up doing a burnout(left it in 2 HI, now I know). But afterwards not, when I let the pedal out to engage a it groans a little and has some new vibration. This is only when the slipping it, once it's in gear it's normal. And this really is only noticeable leaving in 2nd gear, the 2-3 shift I don't have to slip, I just let it out at the right rpm and it goes. Any ideas? Did it get real hot, start acting weird? Thanks

Tate

Mine used to make a screeching on the 2nd gear take off when it was new. No longer is an issue. I think it was just while it was breaking in.

When is your vibration? Mine developed around 1700 rpm in 4th gear. Got a fluid damper, reduced it quite a bit. Did the p-pump conversion, and it came back a bit. This is with a solid hub. Sprung hub should have less vibes than mine.

xtoyz17

What are the chances it's the 2nd gear shudder many trucks used to experience?

P.J

Mine did this too, not a friendly sound. I haven't heard it in quite a while.

Question, you have the 12 button ceramic, correct? I'd be surprised if it got hot.

scottsjeeprolet

I don't think your little burn out did anything to your clutch. Getblown5.9 has 10
+ sled hooks and numerous boosted launchs. Still holds strong.

afoulk

Yeah, and Getblown5.9 really rides the heck out of his clutch when he sledpulls thats what sold me on SB clutches

P.J

I think T.J has a higher plate load. I thought I heard him say like 3600?

afoulk

I think he might have the next one up from that yet. Is it 3850? Either way, I cringe everytime I watch him make a pull

13ALPHA

So the grinding is only when slipping the clutch, which only really happens in 2nd. I talked to Peter and he said when you get them pretty hot (and a newer clutch) spots get red hot, you let the clutch out, the spots stick together a little then break some chunks out and those are grinding in there. He said easy fix, let it just start to engage and blip the throttle to make it slip a litte, do this in first then reverse, should clear it up. I'll let you know the results...

J Lent

I have the 3250DD also & I just pulled it off yesterday while my tranny was out just to check things out. It still has about 3/4 of the clutch material left & that is after 5 sled pulls & 30k miles. You will be fine.

13ALPHA

Awesome, it was mainly that fact that there was grinding and groaning from my truck, I was a little worried.

J Lent

You sure it isn't the pilot bushing or tranny problems?

13ALPHA

Nope, I can't tell, I'm only going off what Peter said, though after today it seems to be getting better, I think that's a good sign.

12vstrokethis

are you guy running a bigger input shaft also does the dd drive like **** on a daily drive.
david

13ALPHA

Over a few days it had gotten better, I didn't need to upgrade to the 1 3/8 shaft, it's not as smooth as a single that's for sure, but it's not horrible at all.