fc3schick87

iTrader: (1)

i did this install a while ago


it does not work.......

the rubber mount was broken on my 7, so we did this modification. it worked for about, 30 min untill i did a launch.

i BENT THE METAL that the pinion was screwed into


so if your looking for a cheap way to get by with out replacing your mount this isnt really going to fix the issue. its really just a bandaid that will soon just mess up again.

dont bandaid....... replace the mount with the right parts.

if your lowered i guess this will help you but if your looking for a quick way to fix a broken diff mount... yeah, its not going to help you.

Osirus9

iTrader: (10)

^ I wonder if that would happen if your front diff mount was NOT broken.
I can't imagine it would...

wrankin

The pinion snubber is meant to add support to the front diff mount in order to prevent it from tearing. It is not meant as a replacement. I'm not surprised you bent your floor pan.

sharingan 19

iTrader: (16)

^^^ This.

bumpstart

fc3schick is referring to running a vertical link with a torn rubber mount block
hence her refs to lowered ( and racing ) FC's could do with the method that corrects the pinion angle

her act of bending the metal bob arm bracket would be a good feat
,, thickness is twice that of what the block mounts through
but expect some toque multiplication cause of the arms length past the pivot
and so i expect if it is doing all the job,, something had to give
in racing situ , you could always brace the back of that arm with some angle iron

the mod that i have done is intended to retain the stock rubber mount block
i am also using a rubber pillow end at base of the vertical link
that will deform and give before the bracket does

there is also nothing stopping the hard core racers going 1 notch further
deleting the rubber mounting block and bracket
and to fab your own triangulating link to hypotenuse across to the studs on the diff nose

dwb87

iTrader: (22)

Do you have any pics or reference links of something like this? ^

onefastrx712a

iTrader: (1)

^^^^^ +1

misterstyx69

iTrader: (142)

Maybe BumpStart can answer this.
Instead if just adding a brace where the diff mount was,what about using a collar to Hold down the Whole front part of the diff to the Subframe?It looks like it can be done.
like a giant C collar to go over the diff and get bolted on each side,so that the front nose of the diff doesn't jump.
...../\..... <<<like that.(hope ya understand!)

dwb87

iTrader: (22)

I am pretty sure I get what you're saying... That's a pretty good idea. I have just been kind of searching for different pictures and ideas to see what sort of solutions we can come up with.

full-cruise

iTrader: (5)

i have an extra one i gotfrom sumit if anybody is interested send me a email.

lamar-

so ive been trying to figure this out, can you run a pinion snubber with a PBM solid diff mount? The PBM mount doesn't have the extension piece that comes off the front of the mount.

misterstyx69

iTrader: (142)

The snubber doesn't hit the mount.
It hits the diff.It is placed on the car body above the diff,touching.(preloaded).
I just did this about 2 weeks ago and it took about 2 hours.I'm getting old.
The Part(snubber) from Summit,you can get at NAPA.They will just order it in...at least that is what they did up here in Canada.It took a Whole day.

lamar-

O ok, from the sound of some of the posts it hit the extension of the original mount. Thanks for the reply.

scrapp

iTrader: (1)

Any update from people who have done this? is it still holding up well with no downsides? Will the diff mount still wear out? Will the diff heat ever melt the snubber? (I have a mazda comp diff mount sitting at home.)

This is basically the end-all-be-all solution for high HP FC's?

This seems so necessary, yet I dont hear it mentioned often or at all. I'm looking to do this.

Landon303

iTrader: (25)

I've done it in 2 cars. No new issues after 12K driven miles in my T2, using a mazda comp diff mount. Also put it in my vert, even though it has a welded front diff mount.

If you're not REALLY thrashing on the thing it will be fine. It's polyurethane, so itwon't melt.

It IS advised to re-inforce the welds on the front mount tab on the subframe.

rx7 SE

iTrader: (5)

No issues here on my previous FC, see sig.

papiogxl

iTrader: (6)

I haven't had a problem at all. I've had probably 80 hard launches on both the track and street with it, and I just had a few launches this weekend with my 400 ftlb VR6 on the two step and deadhooking without an issue.

coxxoc

iTrader: (3)

I've beat on the thing for years now with no issues. Cheap, simple band aid. If you want to see more people using them, check the v8 rx7 forums.

Mohr Garage