fiestaturbo.com

by **bassboy** on Wed Dec 19, 2001 2:33 pm

Sunny...u always used to question 200+bhp on standard injectors............whats going on here then??? :wink:

bassboy

by **Fezzy Turbo** on Wed Dec 19, 2001 2:48 pm

Good evening :grin:

I am not at liberty to tell the rollers which were used in this exhaust testing. Some other secrets are also to be held :wink:

Doc is right about the "turbo" part on the charge carrier, my letters have gone.....

"the truth is out there"

_________________

AkA: Greg, Radient red the only colour to have :wink:

<font size=-1>[ This Message was edited by: Fezzy Turbo on 2001-12-19 13:49 ]</font>

by **sunnyFRST** on Wed Dec 19, 2001 2:50 pm

On 2001-12-19 13:33, bassboy wrote:
Sunny...u always used to question 200+bhp on standard injectors............whats going on here then???

bassboy

Have a think about it Bassboy.

Sunny.

by **CarismaDave** on Wed Dec 19, 2001 3:04 pm

I totally agree with Sunny, Doc and Fezzy. BUT as I found out to my peril (having gained all the extra bhp on the outwardly rolled exhaust) whatever you do DO NOT put the Magnex sticker on the pipe!!!!!! Otherwise the 'drag' factor increases (shown on a recent rr) and you lose most of the increase gained by the outwardly rolled pipe. A major peril as I'm sure you'll agree...much like the standard lettering Doc mentioned on the Charge Carrier.

Dave:wink:

by **bassboy** on Wed Dec 19, 2001 3:08 pm

i think i get what u mean Sunny :???:

bassboy

by **Project** on Wed Dec 19, 2001 3:36 pm

Dave - you cheeky git! :lol:

by **chumkila** on Wed Dec 19, 2001 3:53 pm

a 3" system bore with outwardly rolled 4" tailpipe is in order me thinks! :grin:

by **chubbs358** on Wed Dec 19, 2001 3:56 pm

lost for words!!!

by **Jon ERST S2** on Wed Dec 19, 2001 3:58 pm

on a more serious note - don't get a huge bore if you are running standard - only want it if you are running high power - too low back pressure or something...

by **Doc** on Wed Dec 19, 2001 4:07 pm

Jon, 4" outward rolled for me, 132bhp on the rollers, sounds about right, i dont think i would get better figures using a 3".

by **chubbs358** on Wed Dec 19, 2001 4:09 pm

if ts not bn done yet you should try 2 get maxpower or fast ford 2 do that test 2 prov it 2 all the disbleavin gets (like my bro) :grin:

by **chubbs358** on Wed Dec 19, 2001 4:18 pm

i know it wiz bhp u were after but i wiz wunderin which u thought played a sweeter tune. :devil:

by **Excursion** on Wed Dec 19, 2001 4:36 pm

Ill tell you something that is scientifically true, tailpies of over 4" long that are larger than the overall diameter of the system hurt performance due to air "stall" (as a result of turbulence). Thats why competition cars have same diameter

of course we are talking <1bhp here which counts in competition

another piece of trivia :smile:

by **Doc** on Wed Dec 19, 2001 4:54 pm

Damn, could have got 134bhp! :devil:

by **Fezzy Turbo** on Wed Dec 19, 2001 7:15 pm

I see there are too many non-believers......oh well...

Myself and sunny thought we would pass on some usefull knowledge.

We tried to help...... :sad:

by **Project** on Wed Dec 19, 2001 7:37 pm

Jon mentioned the bore of the system - I think he means the overall bore, not the tailpipe size.

Mine will be 2.5" bore, on a 1600 EFi n/a engine, which is pushing it a bit, and basically causes a loss of torque but a theoretically freer revving engine (won't make a lot of difference really).

by **TrekkieFRST** on Wed Dec 19, 2001 7:49 pm

well I believe

by **Jon ERST S2** on Thu Dec 20, 2001 5:59 am

I got 136.9bhp with a 2.5" bore and 4" (Outwardly rolled). It made about 80bhp before that. (ok the actuator wasn't working and it was boosting at 0.5psi) but still!

by **matthewhignett** on Thu Dec 20, 2001 9:29 am

Boys boys boys, I have personally unclosed the greatest way of achieveing BHP. Firstly get some electrical tape and get a pair of go faster strips around your car, that should see around 15 bhp, at the cost of 39p per roll of tape. Also by cutting a hole under the passenger's feet, allows them to run whilst in the car, adding just a few more bhp when needed. Another great method was to develop a dirty great big max power sticker accross the rear window. My mate saw over 35bhp increase.!!! please dont tell anyone but this is gospel. I do belive that sunny is questioning the concept of these modifications. How he found out is unknown.................. :bonkers:

by **sunnyFRST** on Thu Dec 20, 2001 6:55 pm

From what I hear CrazyDave's car has the above mentioned mods done to it (you must of gained that knowledge from him matthew!)

Sunny.

by **The Bruster** on Thu Dec 20, 2001 10:41 pm

OK, not wishing to sount like a complete anorack car gammon slipper person, (ahem) but the other day on cold startup and (even more than usual) smoke coming out the back i noticed that the inward rolls were causing turbulance!!!! I actually thought about difference in performance between inward and outward rolling...

Then again on my van most of the gas gets out BEFORE the fecking tailpipe!

In terms of styling I prefer a thick metal simply cut and machined smooth... as seen on the Blitz/HKS exhaust systems.....

If yer serious about an exhaust you'd have deresonaters too :razz:

by **wiacek** on Thu Dec 20, 2001 11:08 pm

sorry but thats absolute rubbish. the was never 40bhp between a different design back box :lol:

by **Fezzy Turbo** on Fri Dec 21, 2001 3:57 am

Prove us wrong Wiacek!.....

the exhaust system on your car makes a huge amount of difference to performance, it is part of how your car breathes.

so... :razz:

to you...... :wink:

by **Phil Si** on Fri Dec 21, 2001 5:51 am

well why do people say it doesnt make "that" much difference then on the pum,a racing site? or is that NA engines?

anyway... if it WAS the case... then ur insurance would fukkin rise a hell of a lot for just a zorst :razz:

by **Jon ERST S2** on Fri Dec 21, 2001 6:12 am

insurers don't know yet - thats why we got to keep it quiet :eek:

by **TKing** on Fri Dec 21, 2001 8:33 am

How can you expect anyone to belive what u r saying??? :lol:

The inward roll will not effect your performance! The only reason it would effect it is if it was causing back pressure and lets be honest IT'S NOT!! :lol:

Sorry mate but after being a mechanic for 5 years you tend to know when people are lying about power gains!! :grin:

by **Asad** on Fri Dec 21, 2001 11:41 am

i have to say that it is true what sunny has said.

Exhaust design is all about the flow of the gasses out. Any imperfections have an effect. What we are seein here is the effect ampilified on turbo cars as the effect becomes more significant. Box design, and also pipe design makes a much bigger diference than you would think.

i know this [ERRR] my Thesis for my Mech Eng degree was on exhaust system flow.

Asad

by **Fezzy Turbo** on Fri Dec 21, 2001 1:55 pm

there we go...........we have proof...(see above)

:grin:

by **chumkila** on Fri Dec 21, 2001 1:59 pm

On 2001-12-21 10:41, Asad wrote:

my Thesis for my Mech Eng degree was on exhaust system flow.

Asad

goodman!!

by **Jon ERST S2** on Mon Dec 24, 2001 6:22 am

lol I gotta btt this :lol:

by **timb551** on Mon Dec 24, 2001 6:27 am

ooooo Tking are you feeling a bit sheepish now :razz:

At last Asad the man with the knowledge

by **285Andy** on Mon Dec 24, 2001 7:33 am

On 2001-12-19 05:45, Doc wrote:
The Turbo lettering IS embossed inside the pipe thus causing an induction "rippling" effect, not good! I`m investigating this at the mo, "clean" air = smoother induction = increased power.

save your money [ERRR] it aint got turbo embossed on the inside. what would ford produce a cast ally pipe with lettering on the inside for? they wouldnt, [ERRR] it would cost more to make em. prodution cars are made to be as cheap to manufacture as possible. even aston martins use ford & vauxhall parts to keep cost down or they would have to make a new production line to make switches etc (and before somone says it, i know ford now own aston martin :wink:

)
anyway, mine aint got it so unless its worn off (which i dont think somhow) you must be on a wind up there Doc :wink:

by TJ on Wed Jan 23, 2002 3:02 pm

Also the custom twin (either side) exhausts, are only good for turbo engines, as on normally aspirated engines there is a loss of back pressure, affecting the performance.
(this is serious. )

by **Project** on Wed Jan 23, 2002 3:52 pm

On 2002-01-23 14:02, TJ wrote:
Also the custom twin (either side) exhausts, are only good for turbo engines, as on normally aspirated engines there is a loss of back pressure, affecting the performance.
(this is serious. )

I think my rash is more serious though... :aaah:

by **sunnyFRST** on Thu Jan 24, 2002 1:56 am

I forgot all about this thread! :lol:

Sunny.

fiestaturbo.com

Performance Diffierences Between Outward Rolled Exhaust Back

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