well i had two bad motor mounts so i made some new ones with 65 derometer neoprene. any way i still have the same problem just not as bad. if i dump the clutch without spinning the tires the transmission twists so far that it bangs up against the trans tunnel. are there any other mounts that i should check. i took a quick glance underneith it and i could not see any other mounts.


thanks for the help.

 

ppf?
Diff mounts?

sounds like your transmission is up too high in the tunnel.

 

no it is acually just a pinch lower than stock. also if i pull a really tight turn like starting a donut it will do the same thing. one more thing and sorry if it sounds dumb but what do you mean by ppf?

 

Power Plant Frame.. Mazdaspeed has an upgraded one:

http://66.216.67.51/product.asp?0=207&1=295&3=238

Here's a good thread about the PPF:

https://www.rx7club.com/forum/showth...hreadid=158582

 

Are the motor mounts stiff as stock ? sounds like they are flexing to much. An engine torque brace is not a cure but might help .I think you need stiffer pads in the motor mounts. If you want a torque brace ,PM me for info

 

i'm pretty sure they are. i heard that the stockers are only 40 derometer and they sure as hell felt stiffer when comparing the two.

 

Your tranny shouldn't be moving.

There is a rail under the car that bolts to the frame. It holds the rear of the tranny in place, and goes all the way back to the rear end. It act to stabilize the drive train.

I suggest that you put the car on jack stands, and get under there. I believe there are 8 studs with nuts on them. Make sure they are all tight. You will need a 21 mm deep socket with a long extension.

If these are all tight, you have another problem.

Adam

 

WHEN you go under the car to check the ppf nuts as above also look for cracks in the ppf itself .

 

thanks for the help guys, will check tomorrow.

 

The PPF is probably cracked back by the diff.

btw it is durometer.

Jeff

 

well ichecked it out and there are no cracks and all the nuts are tight. how likely is it that the bushings for the diff are toast? i didn't see any tears or cracking in them though.

 

The mazdaspeed unit is %10 stronger than stock, RE Amemiya's unit is %20 stronger. There's no doubt which one I'd buy...

 

Sounds like you have a problem with your motor mounts. Maybe the ones you "made" are not working properly. It is also possible that your motor isn't bolted up properly, or is loose. I suggest you re-check all of the bolts.

 

However, you are required to pay an extra fee or send in your PPF for the RE one.