Miata Turbo Forum - Boost cars, acquire cats.
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Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   Supercharger Discussion (https://www.miataturbo.net/supercharger-discussion-38/)
-   -   Pushing an MP62 to the limits... (https://www.miataturbo.net/supercharger-discussion-38/pushing-mp62-limits-37575/)

Joe Perez 07-28-2009 09:48 PM
Pushing an MP62 to the limits...
 
Hypothetical question:

Assuming a stock '99 head and valvetrain and a more-or-less ideal exhaust system, what is the highest boost / HP that an MP62 could reasonably be expected to support, within the constraints of blower speed & efficiency?

hustler 07-28-2009 10:02 PM
Track Dog Racing

apparently this car makes 300whp now.

Joe Perez 07-28-2009 10:57 PM
Not enough.

Stein 07-28-2009 11:29 PM
C'mon Joe, just say no to huffing. Snails are faster.

18psi 07-28-2009 11:45 PM
Joe Perez thinking of supercharging? :eek5:
What is this world coming to?

y8s 07-28-2009 11:46 PM
Perhaps you should speak to Mr. Whipplecharger.

http://www.meganandjack.com/mt/archi...%20Whipple.jpg

richyvrlimited 07-29-2009 08:43 AM
Big gulp was pushing over 300whp.

A turbine would likely be cheaper to get there though

Miatamaniac92 07-29-2009 10:52 AM
I'd be curious to see how one did with WI sprayed directly onto the lobes. I don't think I've never heard of it actually being done just in a book.

You gonna prototype for BEGI's new system?

Chris

tann3r 07-29-2009 10:58 AM
I've got 3gph of WI going through the throttle body into the blower and another 3gph at the outlet. No problems so far and the blower is significantly cooler relative to the valve cover. Pre-WI the blower was hotter than the valve cover.

Braineack 07-29-2009 11:02 AM
Originally Posted by y8s (Post 435916)
Perhaps you should speak to Mr. Whipplecharger.

http://www.meganandjack.com/mt/archi...%20Whipple.jpg
http://www.adrants.com/images/hey-wh...ueeze-this.jpg




Big Gulp made 340hp on his:
http://biggulp.home.att.net/BigGulp21PSI.jpg

Big Gulp dyno

The latest specs
  • 2000 block, blueprinted, bored 1mm OS, Wiseco pistons, Pauter rods, lightened crank and flywheel, extensive block and oiling system work, 01 MBSP
  • 2000 head, ported, Manley OS valves, Eibach springs, CNC chamber work.
  • Haltech E6X ecu, MSD Dis 2 HO, MSD coils and wires, RC 550 p&h injectors.
  • Modified '01 OEM header, 2 1/2" exhaust, flowmaster resonator, turbo muffler, crankcase ventilation system.
  • A/W IC w/ 3 heat exchangers, Jabsco pump, 3 gallon reservoir.
  • Magnuson MP62 (modified) supercharger and BGPP 6 rib pulley kit.
  • Pre-sc water injection with pulsed injector, Shurflow pump and custom accumulator.
  • Custom coolant re-route, 2 piece swivel oil filter adaptor, B & M oil cooler, dual remote filters.
  • Centerforce clutch plate w/ ACT disk.
  • Eibach springs, KYB shocks, RB sways, Toyo tires (205/50/15's front and 225/50/15's rear).
  • Modified shifter, Autometer gauges.
  • 342 rwhp and 310 ft/lbs of torque at 21 PSI and rising.

richyvrlimited 07-29-2009 02:16 PM
Originally Posted by Miatamaniac92 (Post 436053)
I'd be curious to see how one did with WI sprayed directly onto the lobes. I don't think I've never heard of it actually being done just in a book.

You gonna prototype for BEGI's new system?

Chris
Quite a few people doing that very thing on nutz

One with an MP62 and others with a 45. Supposedly it helps seal the rotors better. I intend to do it myself at some point...

eunos1800 07-29-2009 02:47 PM
Originally Posted by richyvrlimited (Post 436160)
Quite a few people doing that very thing on nutz

One with an MP62 and others with a 45. Supposedly it helps seal the rotors better. I intend to do it myself at some point...

Experimented with WI pre SC before installing the IC.

Couldn't tell any difference and the EMU datalogs showed no boost gain at all down to 0.0 of a psi.

Miatamaniac92 07-29-2009 03:29 PM
Originally Posted by richyvrlimited (Post 436160)
Quite a few people doing that very thing on nutz

One with an MP62 and others with a 45. Supposedly it helps seal the rotors better. I intend to do it myself at some point...
Cool. I can't say that I keep track of Miata Supercharging as much as Turbo stuff. Saw the idea and thought it was interesting.

Any wear/reliability problems so far? How do they determine the WI limitations? Do they use straight water or combo? What kind of TRACK IATs are they seeing?

Chris

rockdoc 07-29-2009 03:53 PM
Got a single 3mm nozzle pre s/c, 70/30 water /meth mix
TDR A/A I/C
Now running 8 psi boost max M45
Track figs
Pre I/C temps 250degF
Post I/C 80degF

I,ll likely be down in Austin late Sept...........if ya wanna grab a beer..

99mx5 07-31-2009 06:42 PM
Originally Posted by Miatamaniac92 (Post 436053)
I'd be curious to see how one did with WI sprayed directly onto the lobes. I don't think I've never heard of it actually being done just in a book.

You gonna prototype for BEGI's new system?

Chris
Its been done before, A guy by the name Jean in Canada tracked his BRP kit and posted that no blower will survive sustained use unless its cooled. He cooled his with WI pre-blower. I believe him because I toasted mine after a year of track racing. I pulled my kit after realizing that I would have to replace it yearly due to the heat of track racing. Beware that Magnusson voids blower warranty if anything is injected into it.

Miatamaniac92 07-31-2009 09:14 PM
Originally Posted by rockdoc (Post 436224)
Got a single 3mm nozzle pre s/c, 70/30 water /meth mix
TDR A/A I/C
Now running 8 psi boost max M45
Track figs
Pre I/C temps 250degF
Post I/C 80degF

I,ll likely be down in Austin late Sept...........if ya wanna grab a beer..
Sure, shoot me a PM. I met you at MSR right?

Chris

rockdoc 08-02-2009 05:53 PM
Originally Posted by Miatamaniac92 (Post 437310)
Sure, shoot me a PM. I met you at MSR right?

Chris

Thats right.-i forget/dont know everyones handles on here

hustler 08-02-2009 06:00 PM
Originally Posted by rockdoc (Post 437862)
Thats right.-i forget/dont know everyones handles on here
http://imagecache2.allposters.com/im...ck-Posters.jpg

BracedEunos 08-05-2009 02:17 AM
Originally Posted by Braineack (Post 436061)
Big Gulp made 340hp on his:
Big Gulp dyno
The latest specs
  • 2000 block, blueprinted, bored 1mm OS, Wiseco pistons, Pauter rods, lightened crank and flywheel, extensive block and oiling system work, 01 MBSP
  • 2000 head, ported, Manley OS valves, Eibach springs, CNC chamber work.
  • Haltech E6X ecu, MSD Dis 2 HO, MSD coils and wires, RC 550 p&h injectors.
  • Modified '01 OEM header, 2 1/2" exhaust, flowmaster resonator, turbo muffler, crankcase ventilation system.
  • A/W IC w/ 3 heat exchangers, Jabsco pump, 3 gallon reservoir.
  • Magnuson MP62 (modified) supercharger and BGPP 6 rib pulley kit.
  • Pre-sc water injection with pulsed injector, Shurflow pump and custom accumulator.
  • Custom coolant re-route, 2 piece swivel oil filter adaptor, B & M oil cooler, dual remote filters.
  • Centerforce clutch plate w/ ACT disk.
  • Eibach springs, KYB shocks, RB sways, Toyo tires (205/50/15's front and 225/50/15's rear).
  • Modified shifter, Autometer gauges.
  • 342 rwhp and 310 ft/lbs of torque at 21 PSI and rising.

Anyone know his blower speed or pulley ratios? Thanks Brain for the info.

What a shame the project is no longer updated.

Braineack 08-05-2009 10:38 AM
this is what he says about it:

When we started to tweak Big Gulp, we started with 2 pulleys. We ran the larger pulley non-intercooled and then the second smaller one once the IC system was in place. Once the car was running with no problems, we cut the larger pulley down to a size slightly smaller than the 2nd pulley. This continued until 21 PSI was reached without any problems. The advantage of this method is that with only 2 actual pulleys, if we went too far, we could always drop back a step until the problem was found and corrected.


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