1.8T engine conversion costs

[F17BAD]

its a expensive job to do right, exhaust has to be the right size bore for a start.. i had planned to keep my old magnex but couldnt

I might be wrong but could you not use a smaller bore exhaust on a non Bam / 225 conversion

Not really well I personally wouldn't with the back pressure from the turbo etc, I'd want at least the same bore as donor car but I'm very picky I guess haha and also work on the "do it once, do it right" theory

[danny_p]

perfectly possible to use a smaller bore exhaust, it'll still work

whats more inportant to consider is the desing and shape of the system and the silencers.

turbos make excelent silencers themselves so when doing a turbo exhaust you only need a singel box at the back of the system, as for sizeing of the pipes a smaller bore well desinged and built system can outflow a larger bore system at a given pressure differance quite easaly.  nice sweeping mandrel bends FTW 3" is often preferd as it sounds better and helps them sell

thers not much point being fussy with the downpipe if your still running a std manifold TBH as thats nasty

[F17BAD]

LOL

[LowlifeDubber]

budget for 3k with a normal 1.8T mate, possible to do it for 2.5 ish

This is the argument i have just had with some one brad, Benjamines best mate infact, he recons he can do it £1k lol fooooool, i sat at a push £1600 if you have a 16v to convert if not £2000

I dont suppose thats Daz.E on Facebook is it?I recall seeing that and commenting on it.Unfortunately i dont think he has a clue what is involved in the conversion.

[F17BAD]

budget for 3k with a normal 1.8T mate, possible to do it for 2.5 ish

This is the argument i have just had with some one brad, Benjamines best mate infact, he recons he can do it £1k lol fooooool, i sat at a push £1600 if you have a 16v to convert if not £2000

I dont suppose thats Daz.E on Facebook is it?I recall seeing that and commenting on it.Unfortunately i dont think he has a clue what is involved in the conversion.

It is him indeed mate

seems he isnt the only one either going by some of the stuff been said in this thread 

[tshirt2k]

I'm sure if it's done on the cheap.  It won't be a very good one.

[LowlifeDubber]

It is him indeed mate

seems he isnt the only one either going by some of the stuff been said in this thread 

Aaah i thought so  hope he gets another sunstrip like his last car had 

[benvictors]

I kindly offered to do Daz a conversion from his 8v to a VR6 for £1000, thats him giving me his 8v and me returning him a VR, fully serviced, new engine mounts, cleaned bay etc etc
He said he could get an engine for £350 so didn't want to pay me to just 'Pull his engine out and bob in the other one'
Was I trying to rip him off?
I dont think so

[Agreeable Slick]

perfectly possible to use a smaller bore exhaust, it'll still work

whats more inportant to consider is the desing and shape of the system and the silencers.

turbos make excelent silencers themselves so when doing a turbo exhaust you only need a singel box at the back of the system, as for sizeing of the pipes a smaller bore well desinged and built system can outflow a larger bore system at a given pressure differance quite easaly.  nice sweeping mandrel bends FTW 3" is often preferd as it sounds better and helps them sell

thers not much point being fussy with the downpipe if your still running a std manifold TBH as thats nasty

As Danny has said, bore size on the whole exhaust is not as important as you would think.

The most important part is the manifolding as it is turbulent air flow that causes most issues. The ultimate way to ensure that the gas flow is maintained without back pressure becoming an issue is to flow from a larger pipe (manifolding) to a smaller pipe (exhaust) using a 4-2-1 set up with polished internals and large radius bends ensuring smooth transfer through the corners, then a conical blend in to the main exhaust. Removing a CAT removes a restriction and will aid overall gas flow but there is really no need for a 3inch exhaust on and engine under 2.5 ltrs.

Basically it's all about first principals and the venturi effect. The turbo has a very little effect on this as it is designed to flow high volumes of air without unbalancing gas flow and thus surging.

[tshirt2k]

perfectly possible to use a smaller bore exhaust, it'll still work

whats more inportant to consider is the desing and shape of the system and the silencers.

turbos make excelent silencers themselves so when doing a turbo exhaust you only need a singel box at the back of the system, as for sizeing of the pipes a smaller bore well desinged and built system can outflow a larger bore system at a given pressure differance quite easaly.  nice sweeping mandrel bends FTW 3" is often preferd as it sounds better and helps them sell

thers not much point being fussy with the downpipe if your still running a std manifold TBH as thats nasty

Where are you getting your info from? Have you tested small systems on cars using test data or dyno analysis ? What about EGTs?