Baffle off but how to replace straight pipe?

marcus_payne · Mar 17, 2009

well my baffle is pritty much buggerd it has taken major abuse from the rocks and stumps in tixover quarry, so i have decided to get rid of it.

ive had a serch on the forum for the replacement of straight through rear pipes but no propper details are realy given as far as i can find. if i was to replace the rear 'baffle' do i need to keep the pipe the same length because of backpressure an all that.

i thought maybe longer due to the scilencer pipe length gives more backpressure than a standard pipe of equal length?

any help much appreciated

marcus

edge · Mar 17, 2009

I replaced the rear box with a power flow 6" stainless .It was a bit noisy ! But a slip in perforated tube baffle calmed things a bit and restored some of the torque lost from the
bottom & mid range.
This was on a 1.8 petrol by the way

freebiker · Mar 17, 2009

I've done very similar but with a twin exit stainless maganflow.

Edge, i take it you sliced just after the first silencer and fitted some bends before the powerflow. I've found that my bottom tube now sits a bit low under the axle bit will be getting some tube custom bent as ready bent tubes can't do what i'm after. Have you any more pics of what you've achieved with yours? I'm also guessing your tube doesn't run parallel with your sills anymore either?

edge · Mar 17, 2009

No mate the pipe fit on to the existing exhaust pipe where the original silencer pipe fitted, and we routed it between the drive shaft and the swing arm pretty much following the line of the original.
I havent had any trouble with fouling at all but .i have only been on gentle lanes not axle twisting lunacy and the black thing on the under side is a lpg tank!

Dann · Mar 17, 2009

You don't state which engine. Our small fleet of TD4s have no cat substrates. The rear silencers are replaced with straight through pipework from Peugeot 406 HDIs blasting sideways. Diesels don't need back pressure and the turbos love it.

marcus_payne · Mar 18, 2009

yea mines 1.8 we have tubo cars aswell but they have no exhausts haha but yea so a 1.8

is it too noisey to just have a pipe and no other scilencer because im no good at pipe bending and i have had a go ahha. but if i just fit a pipe in exactly the same place as the baffle will it pass a noise test?

thanks for your help

ianda12 · Mar 18, 2009

What noise test ?

freebiker · Mar 18, 2009

i've had her running without the rear silencer on while i was fitting it, and it sounds really really nice!! Mines also a 1.8k. I think by noise test you mean is it below the legal requirement? I think you'd get the coppers pulling you over if it was too loud.

This... i don't know, i didn't drive her with the silencer off so wouldn't know how loud she was with pedal to the metal.

edge · Mar 18, 2009

I think that without any silencer at all you would be deaf by the time you got to the end of the road.
And without the back pressure all the power would be way up the rev range

marcus_payne · Mar 19, 2009

yea sorry not sure why i put test:S haha so i do need some sorta scilencer then, any suggestions on what to replace it with? i dont realy want to replace with the same thing because it will just get damaged straight away.

Baffle off but how to replace straight pipe?

marcus_payne

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edge

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freebiker

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edge

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Dann

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marcus_payne

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ianda12

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freebiker

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edge

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marcus_payne

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