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M35 Dump Pipe - Making Up A Few

Angus Smart
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mym35 Collaborator

mym35

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$450 this is including delivery and also $450 not including delivery

They will be polished up before they get sent out.

pm me about it and i will organize it all. with my details.

i have 8 ready to go!

Cheers

how many have you got left.? :)

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mym35 Collaborator

mym35

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Most of them, ones already on a car, two are on hold and the rest are still there.

I've now bought one as well to go with the fujitsubo exhaust that has just arrived.All i need to do is get a front pipe with hi flow cat and things will be smooooooth, but hopefully not too loud. :)

andy65b Veteran

andy65b

Posted
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Hi Guys

I managed to get access to a hoist and some help (thanks Iain & Ben) on Saturday so decided to install the new dump pipe.

I was fortunate that I was able to talk to Jetwreck who had taken out his turbo himself and could give me some advise on how to get it out. He described working on the turbo and dump like, like working on a ship in a bottle and he is not wrong.

If you want to do this your self you need a hoist. I could not image doing this on the ground.

To get access to the nuts on the top of the dump you will need to.

* unbolt the exhaust from the dump pipe.

* unbolt the tail shaft at the back of the gear box.

* undo the bolts that keep the pipes for the attesa system in place around the tail shaft.

* undo the 4 bolts on the gear box cross member and lower the gear box by about 2-3 inches. (watch the Atessa pipe as you do this)

You will now have a tiny bit of access to the dump pipe but it is still ridiculously tight.

To undo the nuts on the dump pipe you will need a variety of tools from ring spanners to sockets with 1 - 2 uni joints and very long breaker bar.

The bottom nuts are the easy ones but the top 2 on the passenger side are hell.

We got the dump off in 2 1/2 hours.

When you remove the original dump you will need to remove the support bracket on the exhaust end and reuse on the new dump. This support is spot welded to the dump and requires a bit of work to get it off. This bracket supports the exhaust joint and is threaded so the original bolt can be used to join them. With out this support your exhaust will flex.

It took only 1/2 hour to put the new one back in. One thing to be aware of is that the nuts from the factory have a large flange on bottom edge and there are 1 - 2 nuts that need to be replaced with a nut that has little to no flange to fit on the new dump.

The O2 sensor is a bit of a pain to get out and put back in but patience and little hands will do the trick.

Bolt it all back together and you are set. (Iain may be able to post up some pics later on the difference between the 2 pipes)

The results and defiantly one of the best bang for you buck mods. The car feels more responsive to the throttle, is spooling up up earlier in the rev range. I am seeing full boost (14psi) from just over 2500 rpm. The results off the mark are well worth the effort.

The noise of the exhaust is a little louder and the exhaust note is a little deeper. You hear a bit more turbo whistle.

But I am a happy boy with the results. :P

scotty nm35 Grand Master

scotty nm35

Posted
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Good job, it sounds nearly as hard as changing the whole turbo, only a few more bolts. :P

Why did the back of the engine have to be dropped? Was this to get to the top nut on the flange?

andy65b Veteran

andy65b

Posted
Posted
Why did the back of the engine have to be dropped? Was this to get to the top nut on the flange?

Yes, if it was not dropped you would really struggle to get to the O2 sensor and the top nut.

I forgot to mention. You should loosen the nuts holding the air box before dropping the gearbox.

Cheers

Andy

dozzer Rookie

dozzer

Posted
Posted
Most of them, ones already on a car, two are on hold and the rest are still there.

Do you know wich car it was on??

Ive just recently got a full system on from West, (which i think is the same dump). Heaps more responsive. 3" pipe, metal cat and twin tip muffler. Cat sits a little bit lower than oem exhaust so i gotta watch those speed humps. Heaps happy with the guys work, it looks mad and has a real nice note. The missus hasnt complained about the noise yet so it cant be to bad!!

andy65b Veteran

andy65b

Posted
Posted
Do you know wich car it was on??

Ive just recently got a full system on from West, (which i think is the same dump). Heaps more responsive. 3" pipe, metal cat and twin tip muffler. Cat sits a little bit lower than oem exhaust so i gotta watch those speed humps. Heaps happy with the guys work, it looks mad and has a real nice note. The missus hasnt complained about the noise yet so it cant be to bad!!

Is yours a white M35?

andy65b Veteran

andy65b

Posted
Posted
Yeah mate, an rx

Beau was telling me about your car this morning and I think there are a few shots of your dump on this thread.

He was saying that the set up on your car was a bit different to mine when he got it, like it as not quite factory and had already had some exhaust changes done.

scotty nm35 Grand Master

scotty nm35

Posted
Posted
Yes, if it was not dropped you would really struggle to get to the O2 sensor and the top nut.

I forgot to mention. You should loosen the nuts holding the air box before dropping the gearbox.

Cheers

Andy

I got the O2 sensor out from the top, but I had to remove the top stud from the turbo to remove the dump.

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