86FC RX-7

Ok whats the best way to gut these bad boys? Let the car cool down for 4 hours then un-bolt cats then start hackign the inside away with a screw driver or is there a more proper way of dooing this?

Dougster

Go to the hardware store & buy a long piece of steel rebar...Then use a hammer to pound down the rebar & slam out the insides...
(For off road use only)

Cory Simpson

Yeah, I did this, and it takes a long time, and the dust/fumes that come off of the material your breaking up. Most likely are harmdull!


Why don't you just buy a streetable header and presilencer from raceing beat? It will be MUCH better, and save you lots of time!

torean

buy a replacment from racing beat..then when emisson test time comes...u'll still have a replacement for it...my .02

silverrotor

iTrader: (1)

All pertaining to your question. The search function Is great when It's working.

https://www.rx7club.com/showthread.p...&highlight=gut

https://www.rx7club.com/showthread.p...&highlight=gut

https://www.rx7club.com/showthread.p...&highlight=gut

https://www.rx7club.com/showthread.p...&highlight=gut

https://www.rx7club.com/showthread.p...&highlight=gut

5 point whoa

yeah, I used a screw driver on mine, I'll warn you now, theres a bar going through the middle you wont see until your done, so when you bang and stuff wont move, it's prolly the bar, so it gets annoying. good luck, it only took me like 20 minutes to take it off,gut it, and put it back on

Rotory

iTrader: (1)

my cat wont come off i just cant get the bolts to budge with any amount of wd-40 and i dont have access to an impact wrench

apreludem

i have the same problem, the heat probably fixed the metal there......im just gonna cut it all off now >=)

Driv300mph

get a knife or scalpel, slice it open, and rip the **** out!

Cory Simpson

How are you gonna cut steel with a knife???


And if you did that, you would have to have a welder to seem it back together.


And as for the people that can't break the bolts loose, use PB blaster, and a pry-bar, but the pry-bar on the end of the rachet, and pull. Worst comes to worst, you'll twist the stud out of the cat. So I suggest useing LOTS of PB blaster, and letting it soke for a good couple of hours!

ANd unless your cats are clogged your really not going to gane hardly anything from doing this.

Aaron Cake

iTrader: (1)

Yes. Finally someone else who knows the miracle that is PB Blaster. Awesome stuff, though it takes extreme effort to get in Canada.

5 point whoa

I've never heard of it, were do you get it??

LAN

iTrader: (1)

fck d cat. straight pipe that sht.

Kenteth

cut it open, throw a pipe in it and shut it back up and weld it. Looks like a cat, but all it really is, is a pipe that goes through a cat body

Cory Simpson

Wal-Mart.

00nothing

hang the little bastards bye their tail put duct tape over their mouth so the neighbors don't hear the screams and use a serrated edge knife carefully slicing from tail to throat

I'm sorry this one i had to give a stupid answer for i couldn't help myself

walken

iTrader: (6)

If the nuts just strip on the cat, get a chissel and split them in half, then goto home depot and buy new nuts. (or you can heat them with a torch) Get a big screw driver and a hammer and bang the honeycomb stuff out, then pry up the wire mesh and pull that out with plyers.

Now you don't need the smog pump, but your 5/6 ports wont open. I'd reattach the pipe on the cat so you don't have an exhaust leak there.

Take the small tube that connects to the big metal air pipe and disconnect it. Look at your air control vavle. There is two hoses connecting to it. One comes from the airpump, the other goes to a long hose that goes to a silencer. Drill a hole in the hose that goes toward the fender. Now take your hose that came off the air pipe and stick it in the hole you drilled. Then seal it off with epoxy and superglue. Then grease your accutators up with an anti-rust lubricant (do not use WD-40!)

You now gained a few HP. I did this, but decided to ditch the pre-cats and go with a pacesetter. Nice, loud, and makes a few ponies.

Driv300mph

I said "Get a knife or scalpel, cut it open, and rip the **** out!" -- this was a JOKE! "Cats" -- I was thinking it would be funny, but you guys are too damn close minded... haha

Black2na

i really don't thing that gutting the cat is a good idea i know least on the MR2 and should be the same for most car all that gutting the cat will do it create turbulance inside of the cat actuly loseing power cause of it. like others said the best bet should be to get the presilencer from racing beat proformance