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-   -   exhust help (https://www.scoobynet.com/general-technical-10/884217-exhust-help.html)

scoobiesteve103 14 April 2011 11:29 AM

exhust help
 
i need some advice on my exhust for my classic plz. i have a open mouth 3" downpipe going to a 2 and half inch flange i also have a blitz nur spec r backbox thats also a 2 and half ince flange but 3" pipe. heres my question. would i lose out if i use a 2 and a half inch center pipe or would it be better to get a 3" and sort the flanges to 3"? ive looked all over the net but cant find a 3" center pipe anyplace pls help!!!!

joz8968 14 April 2011 11:41 AM

True 3" straight through centre:-

Haywood & Scott Subaru Classic 3" Straight through Centre Pipe

http://www.haywardandscott.com/media...ntrepipe_1.jpg

Stevo-C 14 April 2011 11:47 AM

Exhaust Help
 
Hi mate.

I had the same thought recently when buying an exhaust for my newage. I ended up with a Miltek 2.75" system and it delivered everything I needed.

I guess it depends on how much power you're planning to end up with?

If you're aiming for up around 400bhp then go 3". If you're not, save yourself the aggro

scoobiesteve103 14 April 2011 11:57 AM

im only lookin for around 360-380 most as i dont wanna kill the gearbox yet lol

joz8968 14 April 2011 12:03 PM

If you can be bothered to sort the flanges to proper 3", then I'd do that, and get the 3" centre above.

That way, if - rather, WHEN! - you get project creep ;), you won't ever have to address the exhaust again, as it won't be a potential restriction.

scoobiesteve103 14 April 2011 12:15 PM

you ever thought of changing ur name to batman because that good thinking lol

joz8968 14 April 2011 12:16 PM

I'm 'only' running 342/330, but got a true 3" system from the outset, for that very reason. ;)

scoobiesteve103 14 April 2011 12:35 PM

nice im only at 307 at the mo

scoobiesteve103 14 April 2011 12:46 PM

found 1 on scoobybits. going down on sat to get it £95

joz8968 14 April 2011 01:34 PM

Result! Wicked. :)

TonyBurns 14 April 2011 02:31 PM


Originally Posted by scoobiesteve103 (Post 9987132)
im only lookin for around 360-380 most as i dont wanna kill the gearbox yet lol

On a classic that will probably kill a gearbox and an engine (and the clutch and the brakes will be useless etc).

Tony:)


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