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M35 Dump Pipes Again

Angus Smart

By Angus Smart,
in Four Door Family & Wagoneers

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Jetwreck Grand Master

Jetwreck

Posted
Posted
Was looking at getting someone to do full exhaust from turbo back. Would I be right in thinking if I put one of these dumps on then the hardest part for them to fabricate would be done?

nup......hardest part is the suction pipe atm!......I'm pretty sure headers will be a motor out job....if we ever do them!

scotty nm35 Grand Master

scotty nm35

Posted
Posted
nup......hardest part is the suction pipe atm!......I'm pretty sure headers will be a motor out job....if we ever do them!

Skirt!

Im pretty sure I could get the manifolds off without removing the engine, but I couldn't get the replacement custom manifold and GT35 back on. Best to drop the engine. Suction pipe is easy mate. :)

I had an issue with the last dump pipe I made, I couldn't remove the nuts on the stock dump, they had been over torqued onto the turbo, the engine will have to be dropped to get a socket onto the nuts in this case.

Sunkist Grand Master

Sunkist

Posted
Posted
Skirt!

Im pretty sure I could get the manifolds off without removing the engine, but I couldn't get the replacement custom manifold and GT35 back on. Best to drop the engine. Suction pipe is easy mate. :)

I had an issue with the last dump pipe I made, I couldn't remove the nuts on the stock dump, they had been over torqued onto the turbo, the engine will have to be dropped to get a socket onto the nuts in this case.

Lol he is referring to my car.. looks like the mechanic used a breaker bar n loooooooooooong extension n tightened them good(in this case bad).

Scotty... he said he's gonna drop the engine a couple of inches n put your dump on free. im hoping to get it on there by wednesday-ish but hopefully before the end of the week :)

until then i'll just stare at it. :)

Sunkist Grand Master

Sunkist

Posted
Posted
Do I need two?.... :)

I can't use the "my turbo will blow" excuse on the Mrs to get an exhaust.... DAMM! :)

LMAO this is the exact excuse i used on my parents, it wasn't believed, then my Turbo actually blew, so they paid for it hahahahahahahahah

Sunkist Grand Master

Sunkist

Posted
Posted (edited)
Nothing to do with the boooost level? :)

noooo scotty nothing to do with 20psi with a stock turbo.. nothing at all..i remember dad asking what the little T boost thing was.. i made up something along the lines of. i had a split in the bosst line so i have to use that to control it so too much doesnt go through..

got a reply from the mechanic.. he can only do the dump week after next :)

he's doing it for free so i guess ill have to wait

Edited by AaronNM35
Old Gregg Enthusiast

Old Gregg

Posted
Posted
nup......hardest part is the suction pipe atm!......I'm pretty sure headers will be a motor out job....if we ever do them!

Was only talking about turbo back, so custom dump from here, then new front pipe, hiflo cat and new muffler will do it? And most exhaust places could fabricate?

Actually just went out for a crawl under the thing to check what you and others were refering to - not going near the bits before the turbo.

(If I have confusion I am sure someone will set me straight.)

"Someone" suggested as most of the restriction was in the dump, minor "modifications" of the cat/s and replacing dump would get almost as much benefit as a new 3" exhaust? I wonder how they where going to modify it....said something about a hammer.

Anyway put me down for one and let me know exact $ and when pls.

PetroDola Proficient

PetroDola

Posted
Posted (edited)

hehe thanks scott.. best investment i made so far getting that complete zorst up here from dump to muffler, as far as mods go thus far,

dont have to deal with any of this bs :P

hehe i always wanted to ask about the zorst manifold wrapping around as such. nice to know its a bitch of a job if we ever wanna go custom.. but alas screw one bank being turbo.

Edited by PetroDola
Commsman Veteran

Commsman

Posted
Posted
Have to get my matey onto it. he doesnt work full time at the fabrication shop anymore, so he has to do it in his spare time..

i've told him there is about 7 or so interested in it so hes pretty keen to get it started.

G'day Angus.

How are we looking on numbers now? By my rough count there's at least 10 people interested.

samuri Rising Star

samuri

Posted
Posted (edited)
Mate, that's EXACTLY what I wanted to hear. I'll do some dodgy maths now to show how the dump pipe mod will pay for itself (better fuel economy) in X months and with no downside how can she say no???

Any chance of showing how this dump pipe will benefit fuel economy, and reduce costs?

lets say for every 10,000km

Any comments on this

I got this off the Interent

Sound/noise level will vary with the size of the pipe down the whole length of the system. A bigger pipe with a bigger muffler with a bigger tailpipe will make it louder. But if the system only has a larger dump pipe and a stock size pipe after that, it will stay the same and make little or no difference for power too.

Galebanks.com has a tech section with loads of info, even if he doesn't make a system for that truck, his knowledge is unparalleled.

If the standard piping other than the dump pipe remains the same will fuel economy really change?

I am still having trouble understanding with the exhaust gases exiting from the standard piping , though the pictures posted were helpful.

Just trying to work out whats true and trying to learn.....thanks

Edited by samuri
andy65b Veteran

andy65b

Posted
Posted
Any chance of showing how this dump pipe will benefit fuel economy, and reduce costs?

lets say for every 10,000km

Any comments on this

I got this off the Interent

Sound/noise level will vary with the size of the pipe down the whole length of the system. A bigger pipe with a bigger muffler with a bigger tailpipe will make it louder. But if the system only has a larger dump pipe and a stock size pipe after that, it will stay the same and make little or no difference for power too.

Galebanks.com has a tech section with loads of info, even if he doesn't make a system for that truck, his knowledge is unparalleled.

If the standard piping other than the dump pipe remains the same will fuel economy really change?

I am still having trouble understanding with the exhaust gases exiting from the standard piping , though the pictures posted were helpful.

Just trying to work out whats true and trying to learn.....thanks

If you are trying to work out how to reduce fuel consumption with a M35 Stagea you are looking in the wrong direction and the wrong car.

Replacing the stock dump pipes achieves 2 things

1) Removes a restriction by increasing the diameter of the pipe and removes narrow opening at the turbo.

2) Removes a catalitic convertor that is a huge restriction.

Benifits:

1) Improved power in low to mid range. (not dyno tested as too expensive to keep getting a dyno run for each change I have made)

Negatives:

1) Slightly louder at the dump pipe but not an issue.

2) A little more heat transfer to the floor of the car. (I have just rectified this by thermo wrapping the dump pipe)

Hope that helps.

Cheers

Andy

Daleo Grand Master

Daleo

Posted
Posted (edited)
Any chance of showing how this dump pipe will benefit fuel economy, and reduce costs?

lets say for every 10,000km

Any comments on this

At least 10 people have a dump pipe of some description on their their cars, ALL of them have reported a performance gain. The extra power/torque allows you to use a smaller throttle opening in any given situation (i.e. hills, pulling away from lights) to achieve the same end result.

I got this off the Interent

Sound/noise level will vary with the size of the pipe down the whole length of the system. A bigger pipe with a bigger muffler with a bigger tailpipe will make it louder. But if the system only has a larger dump pipe and a stock size pipe after that, it will stay the same and make little or no difference for power too.

One word; Bollocks.

Galebanks.com has a tech section with loads of info, even if he doesn't make a system for that truck, his knowledge is unparalleled.

Maybe so, but he doesn't have FIRST HAND experience with THIS car. Look at the guys reporting positive results in THIS forum.

If the standard piping other than the dump pipe remains the same will fuel economy really change?

Yes; I could be wrong, but I think so far, I'm the only one to fit the dump pipe ONLY; with the standard exhaust.

My opinion; It makes a HUGE difference to the car, responsiveness, reduced throttle opening required, POWER, TORQUE, honestly it's like a different car. Fuel economy, a little, but it's not like you're suddenly going to be getting 6l per 100km. This car weighs around 1700kg (minimum) not a Prius by any means.

I am still having trouble understanding with the exhaust gases exiting from the standard piping , though the pictures posted were helpful.

Just trying to work out whats true and trying to learn.....thanks

The best thing you could do is; look at the forum, trust the guys who have done the mod, read their feedback, follow their lead. First hand experience form the guys on this forum is worth it's weight in gold.

Cheers, Dale

EDIT, bah! Andy beat me.

Can you see the pattern forming?

Edited by Daleo
cha_cha_ Apprentice

cha_cha_

Posted
Posted

The stagea exhaust seems pretty atypical - in most exhausts the dump would definitely not be a significant restriction. what samuri says stands true in the majority of cases however based on several pieces of anecdotal evidence and the pretty pictures of a big hole becoming a really little hole (ie, the stock dump and 1st cat on the last page) i'm more than happy to accept that a better flowing aftermarket dump is going to make a discernible difference.

iamhe77 Grand Master

iamhe77

Posted
Posted (edited)
Any chance of showing how this dump pipe will benefit fuel economy, and reduce costs?

lets say for every 10,000km

Any comments on this

I got this off the Interent

Sound/noise level will vary with the size of the pipe down the whole length of the system. A bigger pipe with a bigger muffler with a bigger tailpipe will make it louder. But if the system only has a larger dump pipe and a stock size pipe after that, it will stay the same and make little or no difference for power too.

Galebanks.com has a tech section with loads of info, even if he doesn't make a system for that truck, his knowledge is unparalleled.

If the standard piping other than the dump pipe remains the same will fuel economy really change?

I am still having trouble understanding with the exhaust gases exiting from the standard piping , though the pictures posted were helpful.

Just trying to work out whats true and trying to learn.....thanks

Andy and Dale are right on the money here Graham.

The best thing you could do is; look at the forum, trust the guys who have done the mod, read their feedback, follow their lead. First hand experience form the guys on this forum is worth it's weight in gold.

Couldn't agree more.

Edited by iamhe77

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