rear precat help

[smoking rr]

so i am putting my motor back together and i seem to have an issue. besides grinding the rear transmission bracket to clear the precat eliminator, can some one give me an idea of how to fix this or maybe what i did wrong. are the brackets out of order maybe? i will try anything at this point.

IMG_20111129_170246.jpg
IMG_20111129_170300.jpg

[smoking rr]

just incase the pictures dont show what the issue is..... my the bottom flange on my rear precat eliminator hits the rear transmission stay bracket before the top flange of the precat eliminator even gets flush with the turbo.

[Greg E]

2 things:

First you gotta attach the oil return line. That's gonna be a bitch to get right with the turbo already bolted in.

Next is your bracket. The precats are different between a 1G and 2G. Make sure you have the right one.

[2fnloud]

The 3SX rear precat delete does not differentiate between 1gen, 2gen, or 3gen

What gen are you working on O.P. ?

[smoking rr]

well.... not really sure. its a 91 car. a 93 block/oil pan. 1 gen heads i believe.

[dbest671]

Looks like a 1st gen precat elim.

[2fnloud]

Looks like a 1st gen precat elim.

According to 3SX there is no option of 1st gen or 2nd gen for their rear pre-cat delete.

[smoking rr]

Well that's even more interesting.

Sent from the bat cave

[dbest671]

According to 3SX there is no option of 1st gen or 2nd gen for their rear pre-cat delete.

The OP never said it was a 3sx precat eliminator... and the one from 3sx is drilled for both 1st gen and 2nd gen (ie: 2 holes on each side)

And I went downstairs to look at my downpipe (2nd gen), and now I almost 100% positive that is a 2nd gen. Do you have a universal downpipe or generation specific?

[smoking rr]

The 2 holes on each side shouldnt effect where it lines up to the brace. I have no clue what brand it is. I bought it used 3 years ago.

Sent from the bat cave