so, after my engine and tranny swap + clutch install, when the car is warmed up, the clutch gets grippy, and when taking off from a stop, not launching, just normal driving, if the revs are too low, it sounds like a monkey is jumping up and down in my hatch. ive learned to drive it, however, and rev it up more (~1800rpm) to take off, because ive found that slipping the clutch more makes it better.

so i thougt it was my rear subframe whacking up and down, so i bought subframe collars, put them on and... no dice, ive recently put a vlsd and aluminum drive shaft on the car, but the problem was the same before and after the swap.... so its not those, adn the diff on s13 is hard mounted to the subframe, so no motion allowed!

i just cant figure what the hell is moving back there. do the subframe bushings have to be very particularly seated on the top seat?

oh, and i have mr coilovers, adn i tried turning up the damping on the rear, and it didnt help at all...

argh
-thx

ummm...thats really weird becuase wheel hop is usually from your wheels spinning but not really catching traction making the tires bouce...dont know why it would do it taking off slow...but if for some reason your car blows up into a firey inferno...you should give me your wheels :)

A) Subframe collars are a band-aid, after a while the bushing will form around the collars to be just as loose as before.

B) Its prolly in the suspension link bushings. :dunno:

Clutch chatter.

clutch chatter sucks. Didnt install properly?? Or couldnt wait to dump it???

Or couldnt wait to dump it

I choose B. Final answer.

Clutch chatter.


:rofl: I didnt even think of that, but yeah, thats probably it.


My Exedy doesnt chatter like that but I think its slipping right now. hopefully I just have to adjust the pedal, I don't want to dig the transmission out right after I got it running.

My old Zoom clutch chattered like crazy... ACT doesn't chatter a bit. Thats because I drove my KA-T around like a puss becuase I didn't want to blow it up.LoL

well, i put it through the 1000 mile easy pace break in, just like ive heard to do, no launching or what-not. cause a friend of mine didnt, and his brand new spec stage II started slipping like 2 months after he had it put on, and im not dumb like that.

it was installed properly, and i had the flywheel resurfaced by a good shop, the wheel looked very true with a nice swirl hone.

one other thing, is anyone elses clutch creak or click when it disengages? like if i turn every thing off so i can hear well, and open the door, and push the pedal in, it makes a light click, almost like the fingers are sticking or something


thx
-bopp

Mine pops when I release it sometimes. Freaks me out on occasion. I think I'm hearing rod knock or something.lol

I can't think of anything else that would be your problem. I had the exact same thing and it was clutch chatter. What engine/tranny mounts are you using?

nismo

okay.

Then it has to be clutch chatter.

I've got an upgraded clutch and aluminum driveshaft too, and I got wicked wheel hop too.

Its NOT WHEEL HOP! In order to have wheel hop, you have to have wheelspin. Which is not happening in normal driving conditions from 1800rpm. You shouldn't really do anything special to break the clutch in other than normal daily driving for the first 300-400 miles. Unless you have a tried technique that you believe in such as SR20DETpower does. He is very expirienced in the field so chances are his method does work. For the average joe, just drive it under normal conditions for the first 300-400 miles. Also make sure and use some acetone or other agent to remove any grease from fingerprints after you tighten down the flywheel. Use a clean rag and whatever chemical you choose and wipe the contact surface well removing any fingerprints, grease, dirt ect. That can cause chatter as well.

i dont know about the other guy, but this happens when I do spin my tires....

yeah, its not really wheel hop, but its more like whacking in the rear, i have to replace a wheel bearing next week, so im just going to swap half-shafts too, cause i have a less used set, just in case the joints are worn on mine. other than that, it must just be loose rear end suspension parts with play in them that are clattering when teh clutch grabs.

i havent had someone stand outside of teh car to see if the wheels actually move, but all of the noise definitely comes from the rear end, so we'll see what happens

well, it may be clutch chatter, but the noise is coming from the rear end, because something has more play in it than it is supposed to, and since im not taking the tranny off again, because i know everything is right in there, im doing rear end work instead, im not just going to sit here and say "thats the way its supposed to be"

well, everyone had told me that i should just live with my broken speedometer and i probably wont figure out how to fix it...but i still went ahead and tryed to fix it, and did it myself for only 20$ and a little bit of my saturday...im not trying to down what you said, but sometimes you need to just asses the problem and do what you think it is. You could also jack the back end up and run it through the gears to see what happens. And get a stethescope(sp?) for automotive (you know the one im talking about) and start poking around to see if you find anything in the differential, driveshaft, ect..

Or you could realize that puck clutches and beat subframe bushings dont get along. :dunno:

well if it happens when your letting out the clutch and only then, wouldnt it be a clutch related problem probably?

It's only when he's letting out the clutches that the bushings get that kind of a shock which makes them make that particular noise.

the bushings make the noise, but that is just a symptom, not the real problem.

Does anyone make full aluminum subframe bushings? they own so hard on my SHO was like 200x better really.


I do, so far I love em... I have yet to drive hard on them because I'm breaking my motor in but I have zero shudder when taking off.


P.S. the people that bitch about gear whine are fucking lame.

the people that bitch about gear whine are fucking lame.

MF Werd.

I'm going to prolly get some aluminum subframe bushings soon. Too cheap not to get them you know?

werd...

Dont bother doing all the burning and cutting and bullshit

1)use a C-Clamp to press out the center, which will just rip out with a little force

2) cut two notches in the lip around the bushing case so that you can bend up a little flap.

3) Take a flat head screwdriver and hammer it in between the casing and the sumbframe (use a good screwdriver so it doesnt break right off the bat, I went thru two of them)

4) if the casing still hasnt fallen out find a punch with a larger diameter and drive it thru the gap you made with the screwdriver.


I spent 4 days trying to do it the burning and cutting way. After that I just got pissed and tried it my way and it took me 10 minutes to do the other three.