Jump to content
SAU Community

Recommended Posts

I've been made aware's that a few of you might be after some dumps again.

If we can get about 10 partys interested i'll get him to make some more up

we'll do them in mild steel this time with ceramic coating. the stainless was painful to work with dew to the rather strange bellmouth size and design.

This is a photo of the similar design, its a stock replacing dump, so can work with your stock exhaust without problems.

post-31456-1284609075_thumb.jpg

Sorry i dont have a photo of the last ones we got made.. i am sure someone will post one up

should be ballpark of $400

Link to comment
https://www.sau.com.au/forums/topic/337039-m35-dump-pipes-again/
Share on other sites

  • Replies 270
  • Created
  • Last Reply

Top Posters In This Topic

I've been made aware's that a few of you might be after some dumps again.

If we can get about 10 partys interested i'll get him to make some more up

we'll do them in mild steel this time with ceramic coating. the stainless was painful to work with dew to the rather strange bellmouth size and design.

This is a photo of the similar design, its a stock replacing dump, so can work with your stock exhaust without problems.

post-31456-1284609075_thumb.jpg

Sorry i dont have a photo of the last ones we got made.. i am sure someone will post one up

should be ballpark of $400

how about delivery to the UK ?

I can tell you that if I had my time again and limited budget for an exhaust upgrade I would only do the dump pipe. It created the biggest difference to mid range power.

I took some photo's of my stock dump to give you all an idea about the limitations of it. You will see in the second shot the Cat that is inside the dump and this is a huge restriction and for any one running a stock turbo also a big risk as it retains so much heat that it leads to premature turbo failure.

post-41854-1284680184_thumb.jpg

post-41854-1284680212_thumb.jpg

Can anyone tell me if changing the dump pipe is a DIY job?

Would most people tackle this themselves or take it to their favourite exhaust shop for fitting?

In any case, I'm thinking seriously about it.

Can anyone tell me if changing the dump pipe is a DIY job?

Would most people tackle this themselves or take it to their favourite exhaust shop for fitting?

In any case, I'm thinking seriously about it.

I was told by others in the know you can.. but its not easy without a hoist and some deep 1/4inch sockets of size 14.

i got mine done at a reputable exhaust shop for $280. but it wasnt just the dump..full system inclusive of dump for the install cost.

Can anyone tell me if changing the dump pipe is a DIY job?

Would most people tackle this themselves or take it to their favourite exhaust shop for fitting?

In any case, I'm thinking seriously about it.

I did mine my self and with the help of a mate we did it in about 3 hours but this was on a hoist and a good selection of sockets and extensions.

The hardest part is getting the stock one off the turbo as it wil have been there a few years untouched getting hot and cold but mostly hot.

You also need to remove the mounting bracket from the stock dump to fit the new dump pipe.

If you can get your car off the ground and are handy with tools, you should be able to do it.

Hey guys i will wait a little untill we can get close to 10.. and then get stuck into them when i have the time... which i have plenty of at the moment.

i've twisted my mateys arm and hes keen to get involved again also..

I was told by others in the know you can.. but its not easy without a hoist and some deep 1/4inch sockets of size 14.

i got mine done at a reputable exhaust shop for $280. but it wasnt just the dump..full system inclusive of dump for the install cost.

Sound's like I could get just the dump installed for a couple of hundred $ at most.

I did mine my self and with the help of a mate we did it in about 3 hours but this was on a hoist and a good selection of sockets and extensions.

I'm relatively handy on the tools but my selection has grown a lot smaller over the years (lost/borrowed & not returned) but I don't have ready access to a hoist.

Thanks for the feedback guys.

I'll keep an eye on this thread for the time to buy.

Can anyone tell me if changing the dump pipe adds very much to exhaust noise?

I've got to sell this mod to my wife (it's her car after all), so it's got to be all about the fuel economy and long turbo life. Power gains are only secondary (for her) but a big increase in exhaust noise will leave me in the dog house for a loooong time.

It only adds a little to the in cabin noise. I did the exhaust first so not a perfect comparison.

Mine is made of stainless steel so when I do work on the turbo next I will wrap my dump pipe as the floor under my wifes feet get a little warmer without the exhaust shield.

If these new one are ceramic coated you won't need this.

Cheers

Andy

Sound's like I could get just the dump installed for a couple of hundred $ at most.

I'm relatively handy on the tools but my selection has grown a lot smaller over the years (lost/borrowed & not returned) but I don't have ready access to a hoist.

Thanks for the feedback guys.

I'll keep an eye on this thread for the time to buy.

Can anyone tell me if changing the dump pipe adds very much to exhaust noise?

I've got to sell this mod to my wife (it's her car after all), so it's got to be all about the fuel economy and long turbo life. Power gains are only secondary (for her) but a big increase in exhaust noise will leave me in the dog house for a loooong time.

I fitted the dump pipe alone before doing the rest of my exhaust. I used the "this will make life easier for the turbo, extending it's life, AND we'll get better fuel economy cos there's less restriction" route to justify the purchase, and thus far both have been successful :blink: . Definitely the best single mod, and it only improves as you move further through the exhaust upgrades. 'Course if my turbo fails I'll have some questions to answer...

The added noise issue is a bit of a non event, You can hear the whistle a little more, slightly metallic sound, not unpleasant. The other side of that is, I'm convinced the turbo spools up faster, so the engine noise doesn't mask it as much. All up though, you won't really notice much change in noise; only performance :D . Mine's heat wrapped, so no heatsoak issues to speak of, and this may also damp a little bit of noise.

I'll take one.

Mine is at 99,500km, so I'll probably have a good opportunity to change it when the turbo goes... Already have a custom cat-back.

As I have never had a turbo before can someone indicate on a stock 2002 M35 an average life with an average driver?

Currently done 112,000k.

If only the dump pipe is bigger but the other pipes remain the same size, eg no muffler change ,wont the gases exiting still exit at the same rate . I don't think anything will change in terms of gases leaving quicker.

Just trying to understand the physics of a better performance.

When they say fuel economy or power is better are we only talking 2 or 3 percent ,5 or 10 percent or what? . Can i get a ball park figure?

Anyway I am also seriously interested based on the positive comments of others.

Edited by samuri

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • I'm normally copping my own abuse from neglecting my daily drivers. "Those suspension bushes will last a bit more", "Don't worry about the oil leak, just keep topping it up". The project cars I'm always doing things slowly on them as I'm wanting them to be done better, and neater, and nicer. Luckily I don't have to deal with 18 year old Matt's "Learning to wire" stuff in the project cars. And there's only one piece of wiring I'm displeased about in the Landcruiser, and it's about to be cut out... However, the box loads of parts that have been going through this place lately for the Landcruiser... Brake pads Brake Rotors Full handbrake overhaul Wheel Bearings Seals Swivel hubs Steering Boxes Half the suspension joints Shocks Air bags (Ones to go in the rear springs for towing) Water pump Timing kit Lower timing case Harmonic Balancer Radiator Lots of other little seals and shits Gas struts for the bonnet New power window switches And god knows what else I've forgotten... Ha ha ha I have my fingers crossed the pinion seals don't start leaking on the diffs, that the transfer case doesn't leak, and the gearbox input shaft doesn't leak, nor the rear main seal. As they're about the only seals I haven't replaced in the driveline! I'm seriously eyeing off buying new caliper rebuild kits front and rear brake calipers... I'll probably recheck all the valve clearances soon too, and hopefully, it should be all good and sweet to haul some long distance trips again!
    • Every time I pull my 3x gauges out of the console and see the crack-addict way that I did the wiring, and I just can't bring myself to tear it all apart and "make it nice", because it is currently working. In fact, the last time I was in there I probably made it worse.
    • The best part is when you own the car long enough that you look back and find your OWN ham fisted amateur shit!
    • The annoying part about neglect, is when you start to replace one thing, and find ten more broken things. Ham fisted monkey repairs you normally only find out about when trying to do something unrelated! Ha ha   Neglect you can kind of anticipate the huge costs to fix it all. Ham fistedness is normally a shock the first time your work on a new old car, as everything "looked" good before.
    • For DBA, check out their guide table here. https://dba.com.au/wp-content/uploads/2023/01/Direct_Replacement-Guide-2021.2.pdf   Additionally they have some other guides and info on how to make sure you choose the right pad.
×
×
  • Create New...