Forced Induction Custom FI Setup Questions

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Old 02-12-2008, 05:11 AM
  #161  
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9 mins of smoke is my favourite too :-)

You'd probably get better flow from a single line you know! where the fluid comes together there will be horrendous turbulence... Also, Having two pickups like that wont actually help it not suck air, infact it will make it worse because if only one is underwater the one with air is the easiest path. thats a marginal thing though. the T fitting is not so marginal.

About those inlet manifolds...

"The only ones proven to be effective are PPF manifolds from Sweden"

LOL, you mean NO ONE else in the entire world has built a good manifold for a bmw?? why do i doubt that.

What you mean to say is that even with your obvious welding talents you couldn't be bothered doing a decent inlet. right?

Hell, you could do a budget one like mine with steel and donuts instead of vel stacks that would outdo a stocker at high revs...

Still, you know best.

Tick tock tick tock.
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Old 02-12-2008, 06:31 AM
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Originally Posted by fe3tcourier
9 mins of smoke is my favourite too :-)

You'd probably get better flow from a single line you know! where the fluid comes together there will be horrendous turbulence... Also, Having two pickups like that wont actually help it not suck air, infact it will make it worse because if only one is underwater the one with air is the easiest path. thats a marginal thing though. the T fitting is not so marginal.

About those inlet manifolds...

"The only ones proven to be effective are PPF manifolds from Sweden"

LOL, you mean NO ONE else in the entire world has built a good manifold for a bmw?? why do i doubt that.

What you mean to say is that even with your obvious welding talents you couldn't be bothered doing a decent inlet. right?

Hell, you could do a budget one like mine with steel and donuts instead of vel stacks that would outdo a stocker at high revs...

Still, you know best.

Tick tock tick tock.


----... You AGAIN


THhe man with lotsa shoulda woulda coulda making 400 whp telling someone going for 800+_ what to do and how to do it......


Jesus.



Shut up...
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Old 02-12-2008, 07:54 AM
  #163  
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Originally Posted by fe3tcourier
9 mins of smoke is my favourite too :-)

You'd probably get better flow from a single line you know! where the fluid comes together there will be horrendous turbulence... Also, Having two pickups like that wont actually help it not suck air, infact it will make it worse because if only one is underwater the one with air is the easiest path. thats a marginal thing though. the T fitting is not so marginal.

About those inlet manifolds...

"The only ones proven to be effective are PPF manifolds from Sweden"

LOL, you mean NO ONE else in the entire world has built a good manifold for a bmw?? why do i doubt that.

What you mean to say is that even with your obvious welding talents you couldn't be bothered doing a decent inlet. right?

Hell, you could do a budget one like mine with steel and donuts instead of vel stacks that would outdo a stocker at high revs...

Still, you know best.

Tick tock tick tock.
You're being extremely annoying. I am not taking my stock manifold which has been used on cars dynoing over 900 rwhp and putting on a hack job. I cannot afford to buy the only one dyno proven to make over 1,000 rwhp right now, it's not in my budget. I am not going to hack one out of steel just to do it - I pay special attention to volume and air distribution especially in an inline 6 where your first and last cylinders are so far apart and air distribution can become a problem with a single throttle body and triangular plenum.

Dunno what your problem is but until you spend $15,000 building a custom BMW setup please sit back down and stop criticizing everything. That is a T inlet, not an outlet, it doesn't affect "turbulence" - you didn't even know, so you just guessed whether it was the inlet or outlet. It will supply 2x the volume to the inlet side of the pump - if one has air in it, the other has air in it, they're about 1.5" apart.

Where did I say no one in the world has made a manifold? PPF makes one. My friend locally made one. A guy on the west coast has had one made. Believe it or not there's not THAT many turbo BMWs with custom intake manifolds. The only one PROVEN to work well is the PPF one. It's $1800. If I need it, I will do it. If not, then I won't. There's nothing wrong with the stock manifold at all.

I don't think you know anything about the BMW scene and that's fine - I value your input but it has become nothing but trying to bash and be negative. If you don't like what you see, go away.



Those are the OBD2 (left) vs OBD1 (right) manifolds. I am using the one on the right.

M52 left and M50 right port opening size comparison. The max. dimensions for the M52 is
45mm x 23mm. The M50 is
55mm x 25mm.

The M50 flows nearly 290 cfm while the M52 flows 190...

again, stop evaluating things you don't know about. Weren't you banned from the MS site?
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Old 02-12-2008, 11:42 AM
  #164  
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the stock manifold (obd1) is fine and has been dyno proven- so chillout interweb warriors
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Old 02-12-2008, 12:37 PM
  #165  
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I agree^^^^^. Stop bashing the man so much fet3Courier. It seem like you want him to do it your way! He's not half-assing anything. Have you built a BMW making over 1000hp? Damn !! The nerve of some ppl that can't do any better but always being negative. Take that ---- somewhere else!

*** the haters Jon and BTW, Badd *** project.


Steve (from Brooklyn)
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Old 02-12-2008, 12:48 PM
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Originally Posted by Urinemachine
I wanted to pain the bay, but Jay kept me down to earth - its too cold to paint, nothing is gonna stick and I will have to redo it. So I spent about 3 hrs with Scotch bright pads and lacquer thinner.
with the patients shown in the rest of this thread I wouldn't think you'd be tempted to rush anything. So what's the plan now wait till spring thaw or heat the shop for a day with a torpedo heater?

beautiful btw. Way more money than I can see investing in my toys, but I'm a cheapass and its' beautiful all the same.
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Old 02-12-2008, 01:05 PM
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Originally Posted by stenseltizm
with the patients shown in the rest of this thread I wouldn't think you'd be tempted to rush anything. So what's the plan now wait till spring thaw or heat the shop for a day with a torpedo heater?

beautiful btw. Way more money than I can see investing in my toys, but I'm a cheapass and its' beautiful all the same.
Thanks. Actually my buddy whose shop I use there just remember how he painted his car. Huge halogen lights and a tarp to get the heat in the bay, remove tarp, spray, put tarp back over.

It sucks because we have a 75,000 btu huge hanging propane heater on the wall, but we need to get a permit or some ---- to put a tank outside. So... we're 50% there. We have the little torpedo heaters but they don't do much in a garage this large.
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Old 02-12-2008, 02:05 PM
  #168  
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Nice work keep it coming!!!
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Old 02-13-2008, 08:43 AM
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Firstly, although I think Jon is an arrogant snobby bmtroubleyou driving elitist *****, i really like his build. He's a talent welder and I respect that. However I do find it amusing when he's constantly licking bruce and als **** looking for the inside word on the first sequencer. So I take the **** out of him for it. Also, depending on his time frame, I think he'd be better off making a different plan for an ECU, either ms2 with a dirty idle and batch injector, or something else. Waiting for B&G ---- to come is like looking for the 4 leaf clover. Sometimes it never comes, and the rest of the time it comes late. That's ok, but I wouldn't bet on it being ready for a certain time, and I wouldn't bet on it being bug free when it is ready. Hence my advice is TRYING to be helpful.

As for taking the **** out of my project : I have aimed to hit 550hp at the crank (max the holset) eventually when i up the boost. i'll definitely hit that. others have made 900whp on my engine before and its only a lousy mazda 2.0 4 pot ;-) If I chose to build a 1000hp engine, which i may in the future, i would choose an RB30DET, a 2jzgte, a 1uzfe, a 1gzfe, or a 20b to make that power. and i would succeed. anyway, thats besides the point.


Originally Posted by Urinemachine
I am not taking my stock manifold which has been used on cars dynoing over 900 rwhp and putting on a hack job.
your work is far from "hack" It would be extremely easy to build something better than the stock bmw. better in the respect you are looking for, ie, high end power. oem ---- is tuned for broad torque. if thats what you want, downsize the turbo and go for it :-) i know you CAN make XXXhp on that manifold, i have NO doubts about that, but the boost required to do it will be greater than what you would need with a good short tubed tapered velocity stacked inlet.

I cannot afford to buy the only one dyno proven to make over 1,000 rwhp right now, it's not in my budget.
There is no need to either. you can make one that will dyno 1200hp yourself.

I am not going to hack one out of steel just to do it
The point is not "just to do it" the point is to do it better. doing it from steel was my only option. i have no tig (yet). what i said was "Hell, you could do a budget one like mine with steel and donuts instead of vel stacks that would outdo a stocker at high revs" which meant that although it would be made of steel, it would flow better than the stocker and have better resonance properties at the rpm you intend to use it. ie, better. *even* though its steel.

I pay special attention to volume and air distribution especially in an inline 6 where your first and last cylinders are so far apart and air distribution can become a problem with a single throttle body and triangular plenum.
A bit of careful thought and modeling can eliminate any chance of that happening.

Dunno what your problem is but until you spend $15,000 building a custom BMW setup please sit back down and stop criticizing everything.
No problem at all :-) Just trying to help you. You don't have to spend/blow/waste 15k on fancy ally fittings and customise the ---- out of everything to make 800/1000/1200 hp. take care of the details and important parts (like the huge fuel rail, which you will note i did not pick at at all, i didnt comment either because enough people already had their tongue in your crack) and the engine will do what you need.

That is a T inlet, not an outlet, it doesn't affect "turbulence" - you didn't even know, so you just guessed whether it was the inlet or outlet.
I KNOW its the inlet, and it WILL affect "turbulence". period. if they came together in a merged Y then it *might* increase flow, but you are still limited to the flow of the single hose into the pump. either way, it should still flow enough for the pump, but there is no benefit in doing that. when i talked about air, i was guessing that that was your intent because doing it for more flow is NOT going to give you any. the fuel rushing into the T at 90deg to the intended flow will be trying to bounc off the far side and go back to the tank, this will interrupt the flow from the inline hose and overall you WILL get more turbulence, less velocity, more pressure drop (on the suction side where it matters!) and LESS FLOW.

It will supply 2x the volume to the inlet side of the pump - if one has air in it, the other has air in it, they're about 1.5" apart.
NO, it wont. unless the two feeding the one have areas that add to the same as the one? then it will be less than optimal, but not pointless. see above for why.

The only one PROVEN to work well is the PPF one. It's $1800. If I need it, I will do it. If not, then I won't.
no need to capitalise that. it was implicit anyway. i know thats what you mean, but that indicates to me that you are suffering from a lack of confidence somewhere that says that you cant design on that is even better than that unit for you own needs.

There's nothing wrong with the stock manifold at all.
agreed. however, it will not be optimal for what you are tying to do. it will work. it will probably get you the power you want. its not critical. it started as a casual question and suggestion. there was no need for a big "i'll do it my way" tantrum.


I don't think you know anything about the BMW scene and that's fine
Dude, i dont know anything about ANY "scenes" and i dont want to. i know a fair few things about engine dynamics though. and that is what counts (or should at least) here.

I value your input but it has become nothing but trying to bash and be negative. If you don't like what you see, go away.
Thanks :-) I'm not trying to bash or be negative. If i suggest that i think something is below par, its because i want to see the beast as beastly as possible. I do like what i see, and despite everyone wanting me to, i wont go away :-)

45mm x 23mm. The M50 is
55mm x 25mm.

The M50 flows nearly 290 cfm while the M52 flows 190...
interesting. that is about what it looked like and i would expect from an oem anyway. besides, its not the diameter i'm proding at, its the lack of taper, and the length.

the larger of the two there is this :

http://www.google.com/search?hl=en&s...25&btnG=Search

ie 1240mm ^2

my inlet ports are 1256mm^2

near enough to same.

yours should be capable by that reasoning to make 1200hp easily enough (my engine pisses in at 800 and you have two more cylinders)

stop evaluating things you don't know about.
ah, but i do. thats the thing. its not rocket science! its just intake design. again, you'll be fine on your stocker, i wasnt saying you wouldnt be, i was saying that given the other ---- you've gone to great lengths to do, it seems "half finished" to NOT do the intake. thats all. esp when the intake alone can totally transform your power curve.

Weren't you banned from the MS site?
Indeed yes I was, and its of little consequence to me as i know pretty much all there is to know about the existing products anyway, and all future ones will be smd factory built and over priced for diy efforts anyway.

it might be worth noting why i was banned. ie, because i questioned lances comments in the manual that were downright rude and insulting to james and ken who are the soul reason that ms has taken off like it has. the b&g code has never cut it. probably never will.

keep up the good work. dont take what i say personally. its not meant that way. (cept the **** licking teasing)

fred.
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Old 02-13-2008, 12:06 PM
  #170  
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Fred you talk a lot, that is all
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