GoRacer

iTrader: (2)

What's the latest update, Capt Bill?

Goukid2

?

DomFD3S

Goukid2

You dug up 5 year old threads! WTF?
Not only that, but 2 of them about the M2 Ball Bearing Turbos...and the ONLY thing you posted was "?".

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/another-m2-twin-ball-bearing-turbo-update-76807/page2/

WTF?!?!?!?!

Why don't you consider posting up the reason why you dug up a 5 year old thread.

Goukid2

Well for the simple fact that im about to get the BNR's but very curious on what the M2's did on Capt Bill's car. Well from reading now artguy i believe?

Goukid2

the BNR's are 2350 and the M2's were a little more but he was claiming 12 psi by 1800 rpms. My car is sequential right now and i love it. My primary turbo is blown and it still kicks ***. Ive already made my mind up on keeping it twin. Right now the best and only option is BNR. But im curious on what ever happened to M2's upgrade and what numbers did they produce. Right now the highest on the BNR's are 421 in non Seq format. Did the M2's ever make more than that? I figured id resurface this thread so maybe i can get artguys attention because his PM box is to full to accept my e-mail i sent him.

Goukid2

Just wish there were more options for our buck besides single. My buddy just the other day dynoed at 495 HP in his 300zx. He upgraded his twins to two Gt28's. They have those options for that car. Why not ours? two nicely placed Gt28's would be to freaking sweet. And that was 25 psi on Meth. Im honestly about to do some crazy experimenting but neeed as much info as i can get before i go and spend the money.

Kento

He got rid of the M2 twins a long time ago. Click on his username and look at his sig. Fritz had his M2 twins for sale a while back, you might ask him who bought them.

GoodfellaFD3S

iTrader: (213)

Who's to say that the BNRs *arent* twin t-28s, or some variant of that? remember, cars with a 6 cyl like the 300zx will make more power with the same turbo setup than the 13b, but we don't need as much power as they do. My setup with 421 rwhp would have crushed a 495 rwhp 300z.

I drove artguy's car when it was at Gotham with the m2 twins. The car wasn't too bad, but nothing that seq BNRs can't do. Besides, M2 went under many years ago, so there's no hope of getting their twins anymore........

Mahjik

iTrader: (1)

Artguy made around 380'ish rwhp with the M2's. The power delivery was phenomenal. I'm not sure if his dyno sheet is still available on the forum. IMO, the M2 twins would be the best upgrade for keeping the twins sequential, if they were still available. Sadly they are not.

However, if power is what you are after, either go single or BNR's.

ptrhahn

iTrader: (9)

Just like the CF intake, it's too bad nobody has identified who the vendor was that performed the M2 upgrade... I'm sure it was outsourced... and inquired about replicating the setup.

Goukid2

thanks fellas for the input.

artguy

actually, there is some misinformation happening in this thread, which is why I bumped it after years of being away from these boards.

the m2's were just another companies twins from australia that were being re-distributed and re-branded. M2 only imported them. (if you dig through my threads you will find me mention the name of the OZ company...i forget at the moment). They have a host of twins options at the place. I never said anything back in the day as I did not want to mess with M2 business but I imagine the variety of twin setups are still available. I actually got the m2 set and then sent them to that company in australia in order to have the custom larger secondary installed...probably not a great move for auto-x but for pure fun the larger secondary was great. I actually enjoyed the head snap at transition...and my low end was the best in the rx community...probably still is the best numbers...not sure. I loved the setup...and if not for the reliability issues of running a sequential system, I would go with this same setup again...without question.

http://www.conceptart.org/dyno/ArtguyM2hpsheet.jpg

http://www.conceptart.org/dyno/ArtguyM2torquesheet.jpg

Blame the horsecrap tuning above on xs (the choppy waters from lazy maps).

Anyway...if I can remember what company was doing the builds I will let you guys know...otherwise you may want to search.

I never rode in a bnr car that was not non sequential. the non sequential was laggy as hell in the three different cars I rode in with that setup. the gt30's spooled full boost (16 psi) by 2800 rpms if I remember correctly...which was pretty decent I think when comparing to the other custom twins setup that sees boost full on at 3600 to 4200 rpms from my experience. My mindset has always been that HP is only good if it is in the RPM range that you drive in on a daily basis.


Jason



P.S. Rich, you drove my car when it had 4's for compression and was running very poorly...not to mention the problems caused from having the ignition hooked up wrong due to shop monkeyitis there at the shop back in the day. When I brought it to Gotham it was not spooling properly either which is part of the twins frustration that led to me going single. But alas...those were the old days.

The single setup in my sig is the way I would go again in the future though...got great response and I just found out today that the new owner has been driving it hard for a couple years with no reliability issues at all. Kudos to Steve Kan for getting it right when no one else could.

Though I will admit that the year of my m2 twins machine was probably the most fun time I have had in my FD.