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793 HP Stroker Miata on M.net

 
Old 11-28-2009, 03:48 AM
  #21  
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slow
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Old 11-28-2009, 03:57 AM
  #22  
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link to videos?
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Old 11-28-2009, 05:15 AM
  #23  
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Originally Posted by y8s View Post
HKS TO4Z:
trim 63
inducer 66.7mm
exducer 84mm

Compressor housing inlet 100mm
compressor housing outlet 70mm

Exhaust housing:
trim 76
inducer 74.2mm
exducer 64.7mm
To compare:

Garrett GT3788R:
comp inducer 72.5mm
comp exducer 64mm
exh inducer 63.5mm
exh exducer 88mm

Precision SC61:
comp inducer 71mm
comp exducer 61.9mm
exh inducer 61mm
exh exducer 82mm

HKS T04Z:
comp inducer 74.2mm
comp exducer 64.7mm
exh inducer 66.7mm
exh exducer 84mm

Garrett GT4088R:
comp inducer 77mm
comp exducer 68mm
exh inducer 63.5mm
exh exducer 88mm

biig trboz.
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Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
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Old 11-28-2009, 10:27 AM
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The stroker is taking 30 psi to 8700rpms, seems to be really bulletproof.

How the hell does he find traction on R888īs, I donīt know.
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Old 11-28-2009, 11:31 AM
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From 5k to 6.5k that think must be a ******* rocket. I bet that thing is pointless with no traction at all
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Old 11-28-2009, 11:54 AM
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Originally Posted by zoomin View Post
link to videos?
MX-5 Miata Forum - View Single Post - My New Set Up
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Old 11-28-2009, 11:57 AM
  #27  
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If I lived somewhere that type of power/speed was "accepted" on the streets, I'd be dead. That's an insane amount of power out of that motor.
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Old 11-28-2009, 12:24 PM
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At first I thought it would not be very driveable when I saw how late the turbo hit full boost. But, then I saw the redline; The 8700 rpm redline gives the engine about 2200 RPM range of fairly flat peak power. Hell call it a 3300 RPM wide powerband of insane 400+ horsepower. Not much worse powerband width overall than any other turbo bigger than say a 2871. With that steep torque curve that thing must hit like a freight train. In a word, awesome.
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Old 11-28-2009, 01:22 PM
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What's up with torque and HP crossing at 7500 rpms? Maybe I'm in idiot for asking but I thought that was consistent at 5200.
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Old 11-28-2009, 01:41 PM
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Originally Posted by cueball1 View Post
What's up with torque and HP crossing at 7500 rpms? Maybe I'm in idiot for asking but I thought that was consistent at 5200.
The dyno plot won't load on my slow *** phone connection, but I'd guess it's because they measure horsepower in different units over there. Still a function of torque, but a different equation.
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Old 11-28-2009, 01:52 PM
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Originally Posted by messiahx View Post
The dyno plot won't load on my slow *** phone connection, but I'd guess it's because they measure horsepower in different units over there. Still a function of torque, but a different equation.
So does how much power would this thing be throwing down on a dyno here if that's the case??
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Old 11-28-2009, 02:10 PM
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Holy *****, that must be a wild ride after 5500 rpm lol.
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Old 11-28-2009, 02:13 PM
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Originally Posted by hustler View Post
slow
awesome torque curve.

Originally Posted by cueball1 View Post
What's up with torque and HP crossing at 7500 rpms? Maybe I'm in idiot for asking but I thought that was consistent at 5200.
not only are HP and TQ not to scale, they are measured in different units. Math fail.
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Old 11-28-2009, 02:20 PM
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Originally Posted by cueball1 View Post
What's up with torque and HP crossing at 7500 rpms? Maybe I'm in idiot for asking but I thought that was consistent at 5200.
~30KgM @ 5252rpm = ~216ft.lbs
~225PS @ 5252rpm = ~220bhp

lol, I'm bored as **** this morning so I am going to put my 320/305 chart and his 793/550 chart onto the same graph in excel.

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Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".

Last edited by Savington; 11-28-2009 at 02:48 PM.
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Old 11-28-2009, 02:29 PM
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here:

Attached Thumbnails 793 HP Stroker Miata on M.net-paul_scaled.jpg  
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Old 11-28-2009, 03:43 PM
  #36  
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trackcar_vs_dragcar.jpg
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Old 11-28-2009, 03:47 PM
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Originally Posted by Braineack View Post
awesome torque curve.



not only are HP and TQ not to scale, they are measured in different units. Math fail.
Big cylinder head, big camshafts.
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Old 11-28-2009, 04:32 PM
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Originally Posted by miata2fast View Post
Big cylinder head, big camshafts.
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Old 11-28-2009, 09:52 PM
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I wanna see what he did to this head to make it flow well at nearly 9000 rpm. Aren't these heads notorious for dying out at high rpm?
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Old 11-29-2009, 01:07 AM
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There is a reason alright, nobody uses a big camshaft. The miata head flows better than some NASCAR heads. He was man enough to get the combination right and not use a ***** cam.
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