Question before installing Gen3 SFB on Gen2 SHO

[morebhp]

Hi all,

I have read in other posts that when installing Gen3 SFBs on a Gen2 car, there is something that needs to be ground off to allow fitment. I would like someone to clarify for me where the grinding is needed. I've decided to have a local shop do the work and I want to give them the heads-up about the grinding lest they abort the job and tell me the SFB doesn't fit.

Can someone give me a little explanation of what needs to be done? I'm assuming it is the sub frame that gets ground. (?)

Thanks,
Mark

 

[firebat45]

The Gen 3 bushings have little plastic clips that lock onto the subframe and keep the bushings from falling off when everything is unbolted. You just need to clip or grind those off, they make no difference at all when the subframe is bolted up.

The Gen 3+ subframes have little slots cut in the subframe to allow the clips to fit. You could have that done instead of modifying the bushings, but it's much easier to just get rid of the clips on the bushings. Less than a 5 minute job for all four.

 

[morebhp]

Okay, that make sense. I need to look at the bushings again when I get home. I've looked at them before but didn't notice any tabs. Clearly I missed them.

Thanks,
Mark

 

[Racer X]

I think you're also missing the tidbit about having to cut the transaxle and/or engine mounts off of your Gen 2 subframe, and weld it on to the Gen 3 subframe.

I think you might be in for a bit of searching and reading.

 

[rbruso]

I believe the OP is just trying to use the gen 3 subframe bushing on a gen 2 subframe, not performing a gen 3 subframe swap.

 

[Racer X]

Reading comprehension fail.

My bad.

 

[morebhp]

Haha... yeah. Just replacing my original SFBs here. Not changing the sub frame. For a minute there I thought I'd really misled myself.

 

[morebhp]

Sorry to be **** here...

Are the plastic clips on the inside (center) of the new bushing? I want to grind these off before taking it to my mechanic. Just want to grind the correct thing. (I'm not usually this thick )

Thanks.

 

[zak]

It would be better IMHO to have your mechanic just make a couple of small notches with a handheld grinder or dremel on the subframe itself (they go fore and aft in the large hole, mimicing the front IIRC), for the two little bumps to slide in. This keeps the bushing from vibrating, turning and losening your subframe bolt, which is rather important.

 

[morebhp]

Ah, okay. That helps answer my question. I saw the two locating ridges at opposite ends of the outer diameter of the bushing but wasn't sure if that was what got in the way. I was looking for clips in the literal sense.

I may try to have them do what you suggest. I'm just not sure how much I can rely on these guys to do if the part isn't "drop-in" when I hand it to them.

Thanks.
Mark