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The mkiv Supra Owners Club

Removing the exhaust and cats...


Jim_1979

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How easy is it to remove the exhaust and both cats??

 

The exhaust I would imagine quite easily... possibly the cat. But what about the cat closest to the turbo side? How easy is this to remove?? How awkward to get to etc??

 

How long should it take to remove them??

 

I'll be using a trolley jack/axle stands.

 

thanks in advance

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The cat by the engine is an arse to get to, if you are very lucky the bolts will come off in one.

 

i've heard of a lot of nighmare storys of bolts snapping etc and then a serious pain in the arse to fix.

 

unless you're used to tinkering with cars i'd take it to someone who know what they're doing.

 

I took mine to Paul Whiffin but he is the other side of the island to you. May be worth giving Chris Wilson a call (he is a member) he is well recommended but not sure where he is based, further up north than PW anyway. Both PW and CW supply the decats too. I think PW has a special offer at the mo too.

 

good luck.

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Mine came off no problem at all - a bit of "Freeze 'n Release", wire brush any visible thread, a decent long reach socket with a universal joint bit on, and a 2' breaker bar.

 

I've even taken my studs out just to give them a clean up (they are Torx heads, btw) :) You'd seriously have to give it some to snap the thread without using an impact wrench - they're fine-pitch M10 studs!

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If you're doing it yourself I recommend you get a handeld propane (not butane) torch from B&Q, they're only about £20. Heating the nut makes it a hell of a lot easier to get off.

 

If all goes well it should take about 20 mins to remove and yes, you have to do it from under the car

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having serious headache with this?!?!

 

Managed to take the back box off.... the centre section bolts wont move at all, so I moved onto the bolts that hold the 1st and 2nd cats together. I got one out, but can't get the other one out for shit!?!

 

I've got freeze and release... but it's not budging at all. To boot my cheap ass ratched has just died!!! :(

 

Anyone got any advice on how to remove this damn bolt? Also, the cat by the engine looks well awkward to get off... again... any advice?!?

 

thanks!

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Cheap tools will end up making the job much worse; cheap sockets stand a much higher chance of rounding off bolts as well.

 

Get yourself a decent socket set, e.g. the Professional series from Halfords, 1/2" drive. Get yourself a 2' breaker bar as well, also 1/2" drive. You will probably do exactly what I did and end up sitting there muttering to yourself "why the f**k didn't I get this earlier?" :p

 

Best bet to get the first cat off is to use a long reach socket with a universal joint, meaning you can get to it from any angle.

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Yeah.. I think I'll need it!... lol.

 

Any hinters?... I'm just gonna blow torch them to death and see what happens!!

 

Quick question tho...

 

When putting the new exhaust on how to you get the gaskets to stay in place? They're not what I thought they would be. They're like silver rings with blue stuff on each side.

 

I thought they would be the same shape as the parts that connect together with little holes for the bolts to go through to keep them in place.??

 

(if you get what I mean)

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Another quick question.....

 

The cat closest to the engine seemed to have some sort of sensor plugged into it? I assume (havn't looked), that the decat will have the same space for the sensor??

 

Thanks!! :)

 

Its prob the cat temp sensor just cable tie it up out the way:)

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When putting the new exhaust on how to you get the gaskets to stay in place? They're not what I thought they would be. They're like silver rings with blue stuff on each side.

 

I thought they would be the same shape as the parts that connect together with little holes for the bolts to go through to keep them in place.??

 

(if you get what I mean)

 

Sounds like you've possibly got a replacement gasket for the 1st cat. The gaskets I have are silver and shaped like the exhaust flanges, with holes in for the bolts. Although you may have bought replacement gaskets for the original exhaust (no idea what it's like). In which case they are wrong.

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