RARE-ROC-Z

ok here is the deal
how do i get my cats off?
the shop i am taking my car to will put a pipe in place LEGALLY, if there were no cats to begin with, so i have to take them off and take the car to them, so i need to know if i should bust out a saws all, or do they clamp on? thanks!!

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Jarrad
1990 IROC-Z L98 350 TPI
TH-700R4
G92- 9 Bolt Borg-Warner 3.27gears
Bright Red Hardtop/ Grey Custom Interior

mods: AFPR, B&M megashifter-HD4ft cable, Underdrive Pulleys, Ported plenum, K&N's, Magnaflow muffler, Aluminum Driveshaft, Gutted Air Boxes w/ Ram Air, and more!!
soon to have new PAINT, and suspension work

DAILY DRIVER: 1991 S10 2.5L/5SPD -

zz4mula

If you are using your car for limited street use and mostly drags, I can see removing your cats. But your sig says you are mostly stock. I wouldn't remove them until after you do some serious mods.

Sandy Mandel

I have a Random Tech cat, and I've used a straight pipe. The RT SHF cat is just increadibly close to my straight pipe. So much so, the bypass pipe is sitting in my basement for now. I almost see no reason to reinstall it. I'm looking at the GM Goodwrench performance cat back, too. Those 2 together should do some nice things to my power levels....It's aluminized and $280..Just a thought...

RARE-ROC-Z

OK guys i asked you how to get the cats off, not weither what kind i should have or if i should have them, now i know my car is basically stock, but it all takes time, and you just dont do everything at one jump, you have to work your way up the the top.

and i am taking them off, since one was clogged, and it broke itself loose, and i like the sound with out them, and yes there is a different sound!

now what does it take to get them off? i dont have my car here at my house so i cant look at it. if i did i wouldnt be asking.



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Jarrad
1990 IROC-Z L98 350 TPI
TH-700R4
G92- 9 Bolt Borg-Warner 3.27gears
Bright Red Hardtop/ Grey Custom Interior

mods: AFPR, B&M megashifter-HD4ft cable, Underdrive Pulleys, Ported plenum, K&N's, Magnaflow muffler, Aluminum Driveshaft, Gutted Air Boxes w/ Ram Air, and more!!
soon to have new PAINT, and suspension work

DAILY DRIVER: 1991 S10 2.5L/5SPD -

Jza

They're clamped (and welded sometimes) in the front and two bolts in the back.

vic_V8

Hey jarrad,
Those cats are going to be rusted on big time. You'll probably have to cut them off with a torch, pipe cutter, or even a saw-zall. good luck.

RARE-ROC-Z

thanks vic.. that is what i am figuring also, i am gonna go and look at the car tomorrow, the body guy is taking it tomorrow also!

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Jarrad
1990 IROC-Z L98 350 TPI
TH-700R4
G92- 9 Bolt Borg-Warner 3.27gears
Bright Red Hardtop/ Grey Custom Interior

mods: AFPR, B&M megashifter-HD4ft cable, Underdrive Pulleys, Ported plenum, K&N's, Magnaflow muffler, Aluminum Driveshaft, Gutted Air Boxes w/ Ram Air, and more!!
soon to have new PAINT, and suspension work

DAILY DRIVER: 1991 S10 2.5L/5SPD -

Mikos_89

Hey, so happens that I have my factory dual cat pipe assembly sitting on the patio in my yard. Each cat is WELDED, front and back, to the pipes. No bolts here. Time to break out the hacksaw. LOL.



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'89 GTA: blk on blk with 5.7 liter, T-tops, leather, N10 dual exh with 76,500 original miles. 100% stock including the ZR50 Goodyear "gatorback" tires.

IrocLouver

I am in the middle of cat elimination on my '90 L98. I already have the thru-pipes in place and am ready to weld everything back together. I am going to drill a hole in the bottom of the converter shell to allow the air injection tube to vent to the outside. Other than that it is pretty straight forward. I cut my pipes in front of the cats so I could have a continuous weld on the upstream side of the thru-pipes.