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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 02-08-2013, 12:17 PM   #101
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Quote:
Originally Posted by Efini~FC3S View Post
Did your car make 297 rwhp on the same dyno as the "record" holding car that made 310rwhp? As in the exact same dyno, on the same day?

If not, then how can you possibly compare the two?
Don't forget, nitrodann has to run his car upside down on the dyno too!
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Old 02-08-2013, 01:21 PM   #102
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Agreed, dyno number competitions are silly. I see it all the time with local subaru guys, all using different dynos and claiming their 800whp wrx is the new record, etc. I've learned to go more by 1/4 mile ET or trap speed then by the dyno numbers.

Not that it isn't impressive. It's just silly to make these comparisons unless it is at LEAST on the same dyno.
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Old 02-08-2013, 03:25 PM   #103
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Originally Posted by turbofan View Post
It's like making rulers out of silly putty to measure your gentleman's sausages and pretending like they're accurate measurements.
Someone's been watching lots of Top Gear...
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Old 02-08-2013, 03:28 PM   #104
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Quote:
Originally Posted by Efini~FC3S View Post
Someone's been watching lots of Top Gear...
Every day. [until I get caught up, which should happen next week...]
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Old 02-08-2013, 03:45 PM   #105
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so long if he used any other dynojet, it would be okay to directly compare.
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Old 02-08-2013, 03:53 PM   #106
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Unless it's at a drastically different altitude. There are a ton of other factors of course, but it would still be "close" unless high altitude comes into play.
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Old 02-08-2013, 03:55 PM   #107
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dynojets are pretty universal, alt. ***** everything up, but tit for tat two different dynojets are going to read very close to one another.
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Old 02-08-2013, 03:57 PM   #108
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who cares. he wont break the record anyway


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Old 02-08-2013, 05:00 PM   #109
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hahahahaha, I love you 18.

Of course it doesnt prove anything, its a catchy thread title though.
The goal is quickest mx5 in the country with number plates (hopefully outright). Would you guys even click the thread if it said "Australias quickest mx5 attempt". We have a population 7% of america, who cares haha.

This car has done a few 1000m runway drag events and will do more, we will try to get it to the strip also.

Do trap speeds count if the car is babied off the line (within reason).

Dann
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Old 02-08-2013, 05:51 PM   #110
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Quote:
Originally Posted by nitrodann View Post
Of course it doesnt prove anything, its a catchy thread title though.
The goal is quickest mx5 in the country with number plates (hopefully outright).
I'm not trying to poop on your thread and I think the work you've done is outstanding. The fabrication is beautiful.

You keep bringing up the fact that this car made 297whp on a shitty log manifold with a 2" dp, etc. etc. Seems like that number might be a little high, that is all.

Keep up the good work, and I'm curious to see the results after you switch to EFR
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Old 02-08-2013, 05:58 PM   #111
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Quote:
Originally Posted by nitrodann View Post
The goal is quickest mx5 in the country with number plates (hopefully outright).
[...]
This car has done a few 1000m runway drag events and will do more, we will try to get it to the strip also.

Do trap speeds count if the car is babied off the line (within reason).
Trap speeds count, but not in a competition for "quickest." That's what ETs are for.
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Old 02-08-2013, 11:14 PM   #112
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Yup, trap speed will not lie: If this car hits even 350whp but traps 115 or less we will all know what it REALLY made. (under 300)

cannot wait for results
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Old 02-09-2013, 12:03 AM   #113
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what does it need to trap to prove it making over 300?

It trapped a kilometre at 235 on a slippery surface (gravel on top) previously.

Dann
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Old 02-09-2013, 12:24 AM   #114
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115-120MPH is about right for a miata in the 300whp neighborhood
Someone correct me if I'm wrong.
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Old 02-11-2013, 06:46 AM   #115
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Here is the exhaust.

It has 2 braces and a V band.

Its tucked as high as I could get it, a flat floor and diffuser will fit with ease and clearance.









It also has an extra piece of SS rod on each of the hangers to make sure it never moves.

Dann
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Old 02-11-2013, 09:45 AM   #116
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Quote:
Originally Posted by 18psi View Post
115-120MPH is about right for a miata in the 300whp neighborhood
Someone correct me if I'm wrong.
I would think anything under 115 and you don't have much of an argument that a miata is making 300hp. 115-120 is a good range to expect.
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Old 02-11-2013, 02:15 PM   #117
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I like that exhaust. Good job.

Except for that tab to the transmission. It will rip off after a while. Ask me how I know.

What you should do is a ring/band/whatever you call it around the pipe, attached to a bracket. Kinda like soviet did. Kinda like FM (I think) does.

Otherwise nice exhaust
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Old 02-11-2013, 03:46 PM   #118
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I'll take a better photo of that bracket today. Thanks.

Dann
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Old 02-11-2013, 03:58 PM   #119
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Yeah, a welded bracket like that has been known to rip a section of the exhaust pipe out. Do something more like this:

Flyin' Miata : Turbochargers : Parts and upgrades : 1990-97 2.5" FM exhaust brace
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Old 02-11-2013, 04:04 PM   #120
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another vote for doing it the way 18psi suggests. Nice looking so far!

EDIT: That is, if you feel you must run a bracket there. I haven't since my GReddy kit 10 years ago.
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