Good place to get an exhaust for TB42?

[menace 2]

yeh sorry Drew...mine could be 2 1/4...and forgot to mention ...it has a high flow cat after the extractors..really small one only about 4-5 inches long...cheers

[Drewboyaus]

Every place I have spoken to has been in favour of the 2 1/4 system and all have said the 2 1/2 is not suited unless running turbo... I run 2 1/4 and it breaths very well... See what prices you get ??? and let me know.. the secret to not running a hotdog at the end is to have a longer muffler. My muffler is too short so I need that hotdog on the end and thats on 2 1/4 .......

Yeah, George reckons 2 1/4 too and he knows his chit......
There are a lot of guys running 2 1/2 though too.....
I read one suggestion which was to have the outlet of the extractors at 2 1/4 into the Cat and then 2 1/2 out of the Cat......

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[Alitis007]

Yeah, I read one suggestion which was to have the outlet of the extractors at 2 1/4 into the Cat and then 2 1/2 out of the Cat...... Sent from my iPhone using Forum Runner

Normally people go bigger pre cat and smaller after because when the gasses pass thru the catalyst they actually get hotter. Also you'd be looking for a stainless steel core for the cat, i'd go for a 100cpi (Cell per square inch) over a 200 cpi unit coz if your motor starts to use oil it'll block it. What you need to remember is you want to increase the flow without loosing too much back pressure to help in low to mid range torque

[Drewboyaus]

Normally people go bigger pre cat and smaller after because when the gasses pass thru the catalyst they actually get hotter. Also you'd be looking for a stainless steel core for the cat, i'd go for a 100cpi (Cell per square inch) over a 200 cpi unit coz if your motor starts to use oil it'll block it. What you need to remember is you want to increase the flow without loosing too much back pressure to help in low to mid range torque

2 1/4 would be a bit cheaper too I assume.....

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[Pokey]

AB when you got your exhaust from Scotts Rods did it take long?
Reason I ask. .......they were recommended to me as the absolute best exhaust on the market for what I need. I rang and talked through the requirements and ordered and paid on the day with a promised three week delivery time and they were to email me the tracking no after it was sent. Well that was just over 5 weeks ago. No email no exhaust....

[AB]

AB when you got your exhaust from Scotts Rods did it take long?
Reason I ask. .......they were recommended to me as the absolute best exhaust on the market for what I need. I rang and talked through the requirements and ordered and paid on the day with a promised three week delivery time and they were to email me the tracking no after it was sent. Well that was just over 5 weeks ago. No email no exhaust....

Yeah wow that's disappointing mate. To be honest I can't remember. I was collecting everything when I was putting the turbo on so after I got it, it still sat in the shed for a while.

Contact them on the forum and see what happens.

[Winnie]

Normally people go bigger pre cat and smaller after because when the gasses pass thru the catalyst they actually get hotter. Also you'd be looking for a stainless steel core for the cat, i'd go for a 100cpi (Cell per square inch) over a 200 cpi unit coz if your motor starts to use oil it'll block it. What you need to remember is you want to increase the flow without loosing too much back pressure to help in low to mid range torque

When I got mine the exhaust guy said that it did not need a catalytic converter. I can't remember why something to do with gas?

[Drewboyaus]

When I got mine the exhaust guy said that it did not need a catalytic converter. I can't remember why something to do with gas?

EFI ones need to keep the cat to remain roadworthy.

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[Alitis007]

Edit: it said post error earlier and i reposted more information

[Parksy]

There was a mob in Ringwood Vic that made and sold exhausts on eBay. I bought one last year for my tb42e and it was a simple bolt in job. Full kit, extractors, cat, mufflers, bolts, gaskets and everything else. Can't seem to find them anymore though.