[jeremyc74]

This is some seriously awsome fabrication work, but have you guys considered how much that engine is going to move around under load? Some of the clearences (like the turbo to the inner fender, and the intake manifold to the strut brace) look way too tight in the pictures.

Have you fired this thing up yet?

[KiokenM3]

subscribed. i love these kind of builds. good luck hope everything comes through as planned

[Sniz]

Originally Posted by 94JZA80

you have to keep in mind what "rice" really is. rice is a state of mind...or a food, depending on how you look at it . parts are not rice, nor is the placement of parts...so long as form follows function. that's not to say that there isn't some "form" to the placement of his canister - he wanted the elevated and angled look, but it was just a bonus that it worked out that way. it results from the fact that it is a single exhaust all the way back, which happens to be the most important criterion of the exhaust, hence function over form. i can see how, at a glance, one might quickly assume rice simply b/c it shares some characteristics with the exhausts we often see on riced out cars. but just b/c this exhaust setup has things in common with what many associate as rice (large tip, canister muffler with CF wrap, heavily angled and elevated canister, etc.) does not make it rice...especially on this application, where function takes priority over form.

basically it boils down to the fact that Brian wanted a single, well-flowing exhaust, and was able to fulfill his dream of emulating a particular JDM exhaust style at the same time, all while creating a completely different and unique M Coupe in the process.





congratulations! of all the forums this build is being documented on, you're the first to pick up on what Brian is trying to emulate with his exhaust. most folks who don't like it seem to think it looks like rice, or a civic hatch with a fart can exhaust...but everyone is entitled to an opinion.

glad he likes the exhaust, I think it looks horrible. Thats why modding is all in good fun, its the owners style.

[O-cha]

Originally Posted by 94JZA80

- the wastegate is going to dump to atmosphere, just behind the radiator fan and shroud.

- as far as the anti surge goes, well, surge is surge. its a "better safe than sorry" precaution, and will help some in the event of a BOV failure, which we're not worried about either...again, just another fail safe and peace of mind. perhaps Brian or Shawn may have something more to say about it.

Not in front of the engine right? you're going to pipe it down below it....

And the anti surge wont do anything if the BOV dies it's for real surge, you'll lose some efficiency from it which is why I asked since that engine shouldn't be surging a pt62 with that ar.

[94JZA80]

Originally Posted by O-cha

Not in front of the engine right? you're going to pipe it down below it...

i don't know this detail yet, but i'd imagine Shawn is going to fab a dump pipe so that the wastegate isn't just dumping hot air between the back of the radiator and the front of the block. but i'm not 100% sure he has the room as of yet, so don't quote me...i'm sure he's got something planned for it though.

Originally Posted by O-cha

And the anti surge wont do anything if the BOV dies it's for real surge, you'll lose some efficiency from it which is why I asked since that engine shouldn't be surging a pt62 with that ar.

i guess i misunderstood you the first time around. i'll have to get Brian or Shawn to answer this one, as i'm not quite sure why they went with an anti surge. what i CAN tell you is that this turbo isn't going to see boost levels high enough to put it out of its efficiency range while the engine is still running stock internals. i don't remeber what Brian said exactly, but i believe once Nick G's custom tune is in place, max boost will be around 20psi. and by the time the motor gets built, he'll be switching to a bigger turbo anyways. either way, they shouldn't have any problems reaching the goals they've set for this setup.

[anthony @ eas]

Incredible work. I love everything except for that muffler though. But to each his own

[Spec 1]

1) Totally cool build. Hats off to your buddy for doing all the fabrication himself. I wish I had that type of talent. Should be quick!

2) That rear end kills me. "Function over form" fits because "form" is the last word I'd use. The already ugly Z3 rear is compounded with that wrap-around wing and the 'riced' out, 14" CF exhaust outlet, lol. Gold/silver combo rims seem out of place on the ride as well.

New rims, lose the wrap-around wing, and I think aesthetically it would benefit.

[Tallest]

let's see some facetube links and hear that sound and see it go!!!

PS - i think the wheels and exhaust don't suit the car's style but then again, it's the owner's choice. engine work is marvelous!

[94JZA80]

Originally Posted by Spec 1

1) Totally cool build. Hats off to your buddy for doing all the fabrication himself. I wish I had that type of talent. Should be quick!

2) That rear end kills me. "Function over form" fits because "form" is the last word I'd use. The already ugly Z3 rear is compounded with that wrap-around wing and the 'riced' out, 14" CF exhaust outlet, lol. Gold/silver combo rims seem out of place on the ride as well.

New rims, lose the wrap-around wing, and I think aesthetically it would benefit.

thanks for both the props and the criticisms - as you know, we can't make something that everyone is going to like or love. what's perfect to one person may be hideous to another. fortunately, while Brian appreciates everyone's input, he is ultimately going to do what makes his car perfect in his eyes.

with regard to the wing, it is a factory option that almost nobody opted for when buying their M Coupe brand new. hence it is a rare piece that i personally think compliments the car well and sets it apart from most other M Coupes on the road.

[SuPaSkillz]

Nice ride!!!!

[GuyOh]

i love everything done to the car, but i hate the muffler

[94JZA80]

to be quite honest, i think we (Brian, Shawn, I , and the few others who knew about the project since its inception) expected the exhaust to not sit well with a large portion of the BMW community solely from the aesthetic point of view. Brian takes as much pride in ruffling the feathers of the BMW purists as he does in being unique. keep the comments coming folks.

[Sniz]

Originally Posted by 94JZA80

to be quite honest, i think we (Brian, Shawn, I , and the few others who knew about the project since its inception) expected the exhaust to not sit well with a large portion of the BMW community solely from the aesthetic point of view. Brian takes as much pride in ruffling the feathers of the BMW purists as he does in being unique. keep the comments coming folks.

i'm not a BMW purist at all, i just dont think it looks good


and that bend right before the can is a certainly not ideal

[94JZA80]

Originally Posted by Sniz

i'm not a BMW purist at all, i just dont think it looks good


and that bend right before the can is a certainly not ideal

understood, but we still get a kick out of reactions that come from the purists, as they're the ones who have the strongest opinions. you, on the other hand, dislike it, but appreciate what we are trying to accomplish even if its not what you would do in this situation.

and again, we know that those two last bends are not ideal, but for the power and efficiency goals we have set, they aren't going to be a problem either...which gave Brian more liberty to mount the canister the way he prefers it.

[BaLLzZz]

AMAZING build >>> could not live with the exhaust but its not my car nor my project

[A4RingedONE8T]

Didn't even realize the build had made it to this forum, sorry about my lack of presence in the thread so far to help Eric answer questions! First off I want to thank everyone for your comments on the fab work, I've surely put all my know how and experiences into Brian's build without a doubt. Being that this is the first 100% custom fab project I have personally done, and having never even touched a TIG prior, it surely tested my abilities! Overall I am extremely happy with where the car is right now (after only 5 weeks and this not being my primary focus for those 5 weeks) and how everything has turned out. It is definitely everything I hoped I could do plus alot more! Big thanks to Brian for being patient with me and for allowing me to teach myself along the way with the welding!

Reading through the thread I know Eric did his best to keep up with the questions, if there is anything I can further answer please let me know!

I know the wastegate dump has come up a few times, it will have a dump tube on it which routes the wastegate bypass underneath the car. Unfortuantely the u-bends to do so haven't taken it upon themselves yet to create what we need. It will be done before the end of the week when the ECU returns!


-Shawn-

[PaulBailey@ltbmw]

Wow!!!
That thing is insane!!

[Davin]

Originally Posted by KEVIN88GT

my sentiments exactly... loved everything about the car EXCEPT that horrible placement of the muffler... total rice like style..... why?

full agreed

[Mahhvinn]

this build is crazy!

[O-cha]

Originally Posted by 94JZA80

as i'm not quite sure why they went with an anti surge. what i CAN tell you is that this turbo isn't going to see boost levels high enough to put it out of its efficiency range

That's not what I meant, the anti surge housings themselves are an efficiency eater, which is why if you don't need it you shouldn't run it. And that engine shouldn't need it. It's one of those things that doesn't make a huge difference in practice, but that would eat at someone who knows about it.

[roozie2001]

god cant wait till this car gets on the dyno

[94JZA80]

Originally Posted by O-cha

That's not what I meant, the anti surge housings themselves are an efficiency eater, which is why if you don't need it you shouldn't run it. And that engine shouldn't need it. It's one of those things that doesn't make a huge difference in practice, but that would eat at someone who knows about it.

i gotcha...don't know why i didn't understand what you were getting at before, even though you spelled it out for me lol. i'm not sure why they opted for the anti-surge when a PT62 with a .81 a/r shouldn't cause surge problems in the first place. obviously had Brian gone with the same size turbo, but chosen a smaller a/r (say a .63 or a .56 - i'm not really sure how small an a/r is available on this turbo), then i could understand the need for an anti surge housing. perhaps, although being well aware of all this, they just didn't want to take the chance with the compressor freakishly spooling to quickly too early in the rpm's (even though the .81 a/r should prevent this - in theory). Shawn will need to answer this one, as i'm as unsure as you are.