Anonymous

What is the bigest u can go i know sean b had a 4inch system but thats just to big lol.Im thinking a 3 1/2 full system or isit just to much??My exhaust is old and crappy and is meant for a saffy so want anew bling bling one for the car i want it loud i run one back box now and it sounds good i recon it roars.What is every ones opinyon on system sizes?

Diablo

iTrader: (1)

A 3.5" system should be no problem, except for the clearance around the front ARB and the fact that the car should be remapped.

Mike Rainbird

iTrader: (3)

Let me know if you find someone that can do a 3˝" or 3ź" system, as I have yet to find anyone that can do these sizes .

The best off the shelf one is a good old Mongoose . Good enough for anything up to just over 500bhp , and more if you don't mind a bit of back pressure...

dumped

Mines 4.25" LOL

Not loud though.

Spiky

iTrader: (1)

Dave Henshall

and can have the centre box taken out for extra 'rummness'

dumped

Actually come to think of it it was 4 1/2" downpipe splitting to 2X 3 1/4" if memory serves me right. Not loud on only one box.

Anonymous

I only ru a back box on a 3inch system and peeps here me comminga mile away lol but its a shit heap of an exhaust needs replacing it doesent shine

Dave Henshall

what system was it when it was new, there is not a lot of difference in teh mongoose between teh 4x4 and esco, one other than the length and the rear tailpipe tbh...

Anonymous

AAHAHA just of the phone from long life he said he can do it for sure ut might be costly i am going up there tomoro and will keep u informed but hes confident anything is possible hehe wooooooommmm

Dave Henshall

Anonymous

Mike im getting a full 3.5" system made & found only one company that could do this.
PM for details.

Stavros

Longlife? Make SURE he can REALLY do that bore, as ive heard em say they can in the past but couldnt.

Also check out the bends on a longlife sys, or "squashes" which would be a more accurate name for em.

And throw a bit of water on their "stainless" steel n watch patches of it go brown with rust...

CraigN

nige something that big dont fit without removing the front anti roll bar then that will fuck up your suspension setup

Anonymous

Wel im going up tomoro for a price up and its a life time warrenty so i dont care and there 15 mins from my house.As for not being 3 1/2 if its not i wont be buying he said they only really do up to a 3 inch but can do anything i like if i want. i want a 3 1/2 lol.Money talks bullshit walks

pee vee

man, that thing is soo loud at the moment!
its gonna be crazy with that on it!!

ECU Monitor Enthusiast

iTrader: (1)

You will see little benefit from an exhaust bore larger than the exhaust turbine housing outlet size.

The main restrictions in any exhaust system are the bends and the silencers.

The bends cause the fast moving gas to bend which causes extra turbulence
and the silencers obviously restrict as they slow the gas down to reduce
the noise output.

I have seen 630 +bhp (ENGINE DYNO) on a escort cos YB engine with a 3 inch standard
mongoose system fitted in situ. while being mapped.

pee vee

i think he just wants to have louder exhaust than all the boy racers lol

ECU Monitor Enthusiast

iTrader: (1)

pee vee,

Phil, I guess I am getting too old for loud exhausts

Anonymous

LOL well my exhaust has seen better days and is proberly about 2 inches if not less in places cos its flatternd lmao.Id want a three and a half really as its a step up if sean can fit a 4 inch i think the next step down would fit also i might try for a 3 and 1/4.I like big lol and i do like loud id not want to put a quiter exhaust on my car. like the whhhooooooom and i like to be heard lol.She is like a rally slag now so want her defo to sound like one.

Stavros

Ive seen dyno results of a car where they gained over 35bhp from going from a 3" system to a 4" system (the car was in the mid 700bhp range tho....)

The difference it made to SeanBs old RS500 engine in his Escort was quite significant too when went from 3" to 4", the amount of extra fuel that had to be mapped in to compensate...

Deffo agree its silencers and bends that do bad as much as overall bore.

0psi backressure is what you want post turbo, itd be good to plumb a gauge into the downpipe to test what people get, on a 500bhp engine on a cossie i bet a 3" sys has a lot.

Capable of flowing 600+ still, but its a restriction long before that it seems, and for the sake of fitting a bigger exhaust, its crazy not to liberate the extra power thats hiding...

GARETH T

im sure i remember a figure of 16% more fuel

Stavros

i was thinking 18%, but even if it was only 10%, thats fuckloads!

and it was the amount that had to be removed once the 3" was put back on too, so it deffo was the exhaust and not just the mapping

big exhaust, zero backpressure post turbo, is the way.

no drawbacks, less heat, more power, potentially faster spooling of the turbo too.

im going 4" side exit, possibly not even a silencer, depending how brave i feel

Anonymous

Side exits are bannedi belive mate cos they face the pavement so my car will be drinking more fuel lol

Stavros

On a Cossie the side exit wouldnt be on pavement side as ideally it should be on turbo side.

On a GTR the turbo is on pavement side, but i dont give a fuck, im having a side exit

My GTT had a side exit on pavement side too.

Infact it prob makes pigs less likely to pull you as they behind you n spot a big tailpipe that always equals a blue light n a producer from them cooonts

All4it

c0ss1e9i6

I think mines a mongoose! It was the biggest one you could fit at the time with an oval end! 4.5 inch (no cat!!... i didn't say that!)

My old saff cossie had a 5 inch hand built stainless job, but it needed it!!!

And it had zero ground clearance, rubbed on the prop shaft whenever you looked at bends or speed bumps, 90% of it was scratched within a month and then i unrolled the tail pipe getting on a ferry!!!!

So i wouldn't recommend that!

Stavros

What, your telling me your entire sytem on your escort is 4.5inch, and on the saff was 5 inch? FPMSL

Lay off the crack mate

I think your on about the TAILPIPE, the system wont be bigger than 3", same as the others.

c0ss1e9i6

Like i say i don't know!



These are the best pipes i've had and they are only 40mm!

I bow to your fantastic pipe knowledge!

HOT RGB

Mongoose !!!

c0ss1e9i6

I know the standard system vibrates like fek on something when its on!!

Get a right gyration through the floor plan! Only in left hand bends though!!

The saff used to be right hand bends? I thought the belly pan layouts were the same!

SS1

iTrader: (3)

ring this company

http://www.blueflameperformance.com/

good mate used to work there ive been the workshop AWESOME
lazer tracking your old system and quality PRICES
its in the northwest though but they will put you on the right track

quote from there site

Over the last eight years Blue Flame Performance has achieved high recognition as the UK's leading bespoke or custom build exhaust system manufacturers.

As you would imagine our 24000 square foot facility in Skelmersdale is the ideal location in terms of resources for anyone to visit should an off the shelf exhaust system be unavailable or excessively expensive.

Perhaps you require a custom exhaust system which will create a unique look to your vehicle, whether a full system - a rear silencer or multiple exit exhaust, Blue Flame can cater to your needs at very competitive prices, typically build times can take between 3 hours and 3 days depending on the level of complexity to the system.

A look at some of our satisfied customers vehicles below, will give an indication of the projects undertaken

DAN P

iTrader: (1)

i have a 3inch goose sounds ok lol

space hoppers

hi rod WHO did you say found the place that can make 3 and a half inch exhaust that was my input to your car

Porkie

iTrader: (1)

According to some of the experts, exhausts aren't quite a simple as you think and are a bit of a black art. Sean had that monster exhaust made to make the car quiet for trackdays.... it didn't work!!!! it did gain a bit of power though BUT its primaryt task was making the car quiet and so it was a failure!

I Had my exhaust done to make it quiet and once the screamer pipe is sorted properly next week it will be The actual exhaust is very very quiet AND the car does seem to go alot better as a bonus. Karl is going to remap it and so we will see what he thinks as well

Custom Hayward and Scott job. I'm really happy with it so far and will be 100% happy when the screamer is silenced some more

The way it goes into a 4' is supposed to help Turbo spool up??? don't know about that but it looks cool

Anonymous

Right ive just got back from long life he said he can defo get the pipe work 3 1/2 or 3 1/4 hes saying have the down pipe 3 1/4 past the prop then go toa 3 1/2 system all the way back its all bends not welds aswell mandaral bends???i think he said.Im waiting on the price back What would u suggest a 3 1/4 full system or the 3 1/4 in to a 3 1//2 he recons the half would be cheaper as the pipe is cheaper where as 3 1/4 is rarer

Disabled Account

3.5" tube Nigel

Anonymous

So 3 1/2 all the way back from the down pipe or u mean all the way back he really doesent want to do 3 1/2 all the way he thinks itl rub like crasy but i might make him do it lol.Is the 3 1/4 in to 3 1/2 stupid??

Disabled Account

It's not that it is stupid.......

Just that IF he CAN do the whole system in 3.5" tube, then it would be better IMO......

BUT if the ARB/small prop clearance wont allow that, then I guess the 3.25" downpipe with 3.5" for rest of the system is the only solution

Depending on price, I may get mine done at Long Life too.......did hear "one or two" stories about them though - so not sure

Anonymous

Well life time warrenty doug says it all.if its no good take it back he even mentioned taking a system off and refunding cos the custimer didnt like the sound