3.5inch Full Exhuast

heys guys im just curious if has anyone or is it possible to put at full 3.5 inch zorst or at least 3 inch on there e - series?? custom make, not just the tip.

thanks

[sven]

3in will fit but not too sure on the 3.5

[Rmyers]

3 inch yes, don't know about 3.5inch (alot of places wont even attempt 3 inch, so i doubt that 3.5 inch would go) Why the hell would you want an exhaust that big anyway??

[svo347]

Overkill on a 4.0L unless you have a turbo.

[Rmyers]

Originally Posted by svo347

Overkill on a 4.0L unless you have a turbo.

Even then i've never heard of anyone going bigger than 3inch....

[EFFalcon]

wouldn't go 3.5", go twin 2.5 if you need bigger then 3"

pyroay was looking to go bigger then his 3" exhaust, but he was pushing near enought o 400rwkw before needing to go bigger, i'm fairly sure he decided to go for a twin 2.5" system.

[svo347]

I have a full 3inch on my ED no dramas.

[Grechie]

can 4.0L's handle a 3 inch cat back? i herd problems about back pressure n stuff

[Rmyers]

Originally Posted by svo347

I have a full 3inch on my ED no dramas.

Likewise

well a few more weeks and my EBII is gonna be off the road for awhile, i've slowly brought parts. Im just waitng for more dosh so i can get ACL gasket sets n rings & a LSD Diff so far i have a Garrett 35/40 my uncle borrowed from ford *tsk tsk* and pipin aftermarket ecu etc... so yeah thats why i was just wondering if i can go bigger with exhaust.

Thanks guys much appreciated

[ilsautomotive]

A few people like Kyle Hopf have put full 4 inch systems in, so it can be done. Apparently it's not that easy though.

[CruizinEB]

I am not going to get a 3ins because i just got fitterd a 2.5 LOL

sh******* 4 inch thats crazy wouldnt it be hittin the ground if your car is lowered and hittin on to diff etc making sh**** noises???

[LUXO_8]

3" will be fine for that setup....... maybe even starting towards overkill.....

3.5" would start to loose you power IMO,
its all about backpreasure

[EFFalcon]

4" would wanna go under the diff.

i would have to consider, so the recommended is 3 inch for the setup right.? when you say backpressure you meanin when down gearin or shiftin up it pops at the end of zorst??

[ilsautomotive]

Kyle's 4" was apparently over the diff, I remember him talking about it on performance forums.

For N/A I would have thought 2.75" was getting silly...

the exhaust isn't costin me anything because i have mate, which has the equipment bendin pipes welder etc.. he could do for me but then i just gotta make sure which one is suitable for this I6.

[EFFalcon]

for a turbo I6.. 3" is perfect.
for an n/a I6 2.5 is the norm.

[Grechie]

Originally Posted by EFFalcon

for a turbo I6.. 3" is perfect.
for an n/a I6 2.5 is the norm.

wot happens if someone fits a 3 inch to a n/a I6? does it take performance away?

[old_mate]

apparently yes though I wouldnt know by how much

Eseries falcons like a bit of backpressure, hence why some press bent extractors around out perform mandrel bent equivalents. Leave 3in for induction

[Psycho Chicken]

Originally Posted by Grechie

wot happens if someone fits a 3 inch to a n/a I6? does it take performance away?

I thought wot happened when you floored the pedal. Learn something every day hey?

[MRD-Ben]

We run a 3.5" system on John's car, over the diff and vent the screamer to atmosphere under the car, we cut into the spare wheel well to make room for the big stainless rear/only muffler although you dont have to. Proper mandrel bent exhausts are expensive and once you go 3.5" or bigger it gets expensive real quick. Expect to pay a fair bit although if you like making good power and having great boost response its really worth it.

Cheers MRD

P.S. Thanks for letting me take Steamboat for a squirt tonight John, even with the boost wound down it halls ***, I'd forgotten how much mumbo its got. Cant wait to see it on the strip, should be an eye opener.

[InitialD]

Originally Posted by CRUIZIN EB

I am not going to get a 3ins because i just got fitterd a 2.5 LOL

few! glad thats settled ;) i can rest easy now.

[Clarke AV]

Overkill

[toby123]

Originally Posted by MADNC_8

3" will be fine for that setup....... maybe even starting towards overkill.....

3.5" would start to loose you power IMO,
its all about backpreasure

with turbo cars, the less back pressure the better, the gases already have to make a right angle turn to get out of the tuurbo, they dont want any more restrictions....

[MRD-Ben]

Originally Posted by toby123

with turbo cars, the less back pressure the better, the gases already have to make a right angle turn to get out of the tuurbo, they dont want any more restrictions....

Somebody understands whats going on, the bigger the pressure difference you can get accross that turbo housing the faster that sucker's gonna spool and the more power it will make. You can produce 400+kw's very easily with a 4litre falcon engine and 3.5" is borderline adequate if you are venting your wastegate to atmosphere, 4" would be better or as was said you could also run a twin system but remember 2x 2.5"pipes dont have the same crossectional area as a 5"pipe. If you wanna see your turbocharger and exhaust manifold glowing red and not really wanna make good power run 3".

N/A 2.5" is on the money for a street engine, however I did see a speedway EF on methanol making big mumbo running 2.25" at one stage but only 1 muffler and exiting under the door so thats a little different.

[efbeggza]

I was thinking that a 3.5 inch exhaust was 'autobarn blitz' style! 2.5 is on the money for us N/A engines.