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Old 07-28-2009, 10:48 PM   #1
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Default 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?
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Old 07-28-2009, 11:02 PM   #2
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Track Dog Racing

apparently this car makes 300whp now.
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Old 07-28-2009, 11:57 PM   #3
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Not enough.
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Old 07-29-2009, 12:29 AM   #4
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C'mon Joe, just say no to huffing. Snails are faster.
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Old 07-29-2009, 12:45 AM   #5
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Joe Perez thinking of supercharging?
What is this world coming to?
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Old 07-29-2009, 12:46 AM   #6
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Perhaps you should speak to Mr. Whipplecharger.

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Old 07-29-2009, 09:43 AM   #7
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Big gulp was pushing over 300whp.

A turbine would likely be cheaper to get there though
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Old 07-29-2009, 11:52 AM   #8
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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
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Old 07-29-2009, 11:58 AM   #9
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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.
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Old 07-29-2009, 12:02 PM   #10
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Quote:
Originally Posted by y8s View Post
Perhaps you should speak to Mr. Whipplecharger.






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.
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Old 07-29-2009, 03:16 PM   #11
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Quote:
Originally Posted by Miatamaniac92 View Post
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...
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Old 07-29-2009, 03:47 PM   #12
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Quote:
Originally Posted by richyvrlimited View Post
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.
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Old 07-29-2009, 04:29 PM   #13
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Quote:
Originally Posted by richyvrlimited View Post
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
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Old 07-29-2009, 04:53 PM   #14
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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..
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Old 07-31-2009, 07:42 PM   #15
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Quote:
Originally Posted by Miatamaniac92 View Post
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.
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Old 07-31-2009, 10:14 PM   #16
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Quote:
Originally Posted by rockdoc View Post
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
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Old 08-02-2009, 06:53 PM   #17
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Quote:
Originally Posted by Miatamaniac92 View Post
Sure, shoot me a PM. I met you at MSR right?

Chris

Thats right.-i forget/dont know everyones handles on here
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Old 08-02-2009, 07:00 PM   #18
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Quote:
Originally Posted by rockdoc View Post
Thats right.-i forget/dont know everyones handles on here
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Old 08-05-2009, 03:17 AM   #19
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Quote:
Originally Posted by Braineack View Post
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.
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Old 08-05-2009, 11:38 AM   #20
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this is what he says about it:

Quote:
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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