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Old 05-20-2015, 01:21 AM   #61
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Are you making 400rwhp on that cute little thing?
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Old 05-20-2015, 01:33 AM   #62
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No.

Does that change the fact that it will completely step sideways short shifting into second? Clean before 3800?
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Old 05-20-2015, 01:35 AM   #63
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Yes, because your turbo's sized such that you can spool with lower mass airflow than a big turbo can. For autox you need to be able to make upper 300s rwhp or more. If you're only making 200-ish then you're running a little baby turbo that can spool at low 2000s RPMs.
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Old 05-20-2015, 01:38 AM   #64
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I'm sure.

The turbo I have is capable of 250+, it is cheap chinese journal bearing ****.
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Old 05-20-2015, 01:41 AM   #65
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Old 05-20-2015, 01:43 AM   #66
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That 400 motor looks cammed.
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Old 05-20-2015, 01:44 AM   #67
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it aint. in fact, it's a bone stock junkyard head that wasn't even refreshed
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Old 05-20-2015, 01:45 AM   #68
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Weird. Turbo torque curves on a Miata don't usually hold that late.
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Old 05-20-2015, 02:18 AM   #69
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Boost control methods are many and varied.
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Old 05-20-2015, 09:59 AM   #70
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Quote:
Originally Posted by TNTUBA View Post
You clearly have no idea what you are talking about
Probably not, but I'd love to hear why I'm wrong. Custom cams with a stock bottom end? I could see it if OP wanted to run a small turbo and do headwork to keep torque up at the top end, but with a centrifugal SC that won't be a problem. C30-94 is the same price as the C30-74, so I don't understand why someone would do the 74 plus cams instead of just running the 94 with stock cams.
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Old 05-20-2015, 10:31 AM   #71
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Because with properly setup cams you will pick up power EVERYWHERE on a supercharged car. I gained more HP and torque with cams than I gained going from a Eaton at 14 psi to a larger Whipple at 24.
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Old 05-20-2015, 11:12 AM   #72
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Clearly I missed this SC vs. Turbo debate as I was busy getting my car setup and tuned. However I will chime in with my dyno plot and dick waving. This is a car that is built for autox and street driving. Likely to do track days soon after some more supporting mods (coolant reroute etc). I have an MP62 running on a stock 95 motor. Supporting mods include TDR intercooler, 72mm throttle body, MS, 130/62.5 pulleys, Jackson Racing Header, CAT delete, and full exhaust. Now I am not yet building the motor (though I have a spare for that purpose) but I have a fairly conservative safe tune and I am pleased with my results. I picked the kit up used for a reasonable price and have run with it. I originally planned to go turbo and I also see the advantages for both systems. I believe I am at about the limit for the stock engine and transmission and hope I don't find out. But it is good to have spares.

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Old 05-20-2015, 11:26 AM   #73
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The limits on the engine and fuel system are lower with a blower than a turbo so you might be closer than you realise.

Dann
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Old 05-20-2015, 11:28 AM   #74
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I gotta say: I'd be lying if I said I didn't at least somewhat enjoy driving my MP62 setup. The whole "big engine feeling" comment is pretty much spot on, that's what it felt like. However, the "sling shot" torque onset of a turbo is just as, if not slightly more fun.

All opinion obviously
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Old 05-20-2015, 11:40 AM   #75
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Quote:
Originally Posted by nitrodann View Post
The limits on the engine and fuel system are lower with a blower than a turbo so you might be closer than you realise.

Dann
I already have the fuel system taken care of. DW pump and 460 cc injectors. Not optimal but ID1000s will be budgeted into the motor build. Like I said I know I am right at the limit hence keeping tune conservative. This is by no means a daily driver and if I blow it up that only means forced upgrades!!!!

I am already starting to budget for engine build and have a spare 99 motor sitting in the garage for that purpose. And after the motor is built and I have the bigger injectors some higher boost and E85 might be happening. I wouldn't mind a relatively reliable 250+whp SC setup. (and no it isn't cheap to get there! but neither is doing a turbo set up properly)
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Old 05-20-2015, 01:29 PM   #76
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<shamelessplug/>My SC setup is 400+rwhp capable, buy it now for 2500$! Also buy my ID1000s. ;-)
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Old 05-20-2015, 01:35 PM   #77
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Quote:
Originally Posted by 18psi View Post
I gotta say: I'd be lying if I said I didn't at least somewhat enjoy driving my MP62 setup. The whole "big engine feeling" comment is pretty much spot on, that's what it felt like. However, the "sling shot" torque onset of a turbo is just as, if not slightly more fun.

All opinion obviously
Yeap. Would be sweet if you could have both though! All the torque with the instant response.
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Old 05-20-2015, 02:31 PM   #78
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If you need more torque, then you just need a bigger supercharger. From a roll, I was able to break the tires loose in 2nd on 275 A6s on anything other than a nice warm day on concrete.
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Old 05-20-2015, 02:40 PM   #79
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The miata's here that trap 122, 126, and 132mph in the quarter mile all spin wrinkle-wall slicks halfway down the track

oh and their e-peens are bigger
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Old 05-20-2015, 02:41 PM   #80
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That doesn't sound very streetable.
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