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Engines, Transmissions & Final Drive questions and answers

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Okibi
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Re:

Postby Okibi » Fri Aug 10, 2007 7:18 pm

Garry wrote:The hotside/coldside thing is a bit of a misnomer alluding to cooler running. A "hotside" supercharger is indeed on the hot side of the engine but in doing that it allows you the option of installing an intercooler to cool the charge air. A "coldside" supercharger is on the cold side of the engine but the charge air entering the engine will actually be hotter as it goes directly from being compressed straight into the engine.


The Ubercharger (no longer in production) is a "coldside" supercharger that uses an intercooler.

I seem to remember in the early days Corky was trying to use a water air intercooler in the design but it just wasn't effective so they adapted the kit for a FMIC.

Pity it didn't just start as a "hotside" kit but they were trying to keep in on the passenger side of the Miata's to help balance out the weight of the driver a bit.
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tk421
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Re:

Postby tk421 » Sat Aug 11, 2007 11:28 am

16bit wrote:made 136kw or 132 (can't remember) at the wheels so its about spot on what i thought! I pick it up tomorrow so will have dyno report and more pics on monday.


A good result mate, it should be a fun drive. Congratulations :) .

My boost is getting turned on next week.

Re okibis comment:

Okibi wrote:
Garry wrote:The hotside/coldside thing is a bit of a misnomer alluding to cooler running. A "hotside" supercharger is indeed on the hot side of the engine but in doing that it allows you the option of installing an intercooler to cool the charge air. A "coldside" supercharger is on the cold side of the engine but the charge air entering the engine will actually be hotter as it goes directly from being compressed straight into the engine.


The Ubercharger (no longer in production) is a "coldside" supercharger that uses an intercooler.

I seem to remember in the early days Corky was trying to use a water air intercooler in the design but it just wasn't effective so they adapted the kit for a FMIC.

Pity it didn't just start as a "hotside" kit but they were trying to keep in on the passenger side of the Miata's to help balance out the weight of the driver a bit.


Corky is still around and still sells a lysholm screw based kit (the MOAB) that can be seen here. Though the site seems to be down at the moment:

http://www.bellengineering.net

When I enquired they suggested the kit would fit a RHDer (they got hold of a RHD brake booster to judge how much room there was). The problem is its a real expensive kit at over $4700 USD. The lysholm blower can be fragile sometimes as well. This is one of the reasons why flyin miata stopped selling them. At this stage I think they still haven't launched the new kit for an NB either only the NA8.
98 NB8A, Mania CAI, Eibachs and Bilsteins, Whiteline brace, Starcorp's, DBA Slotted and asstd bling, FM butterfly brace. FFS coldside and the whiiiinnne. Now 138rwkw (Glory Run :) ) More with tuning.

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16bit
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Postby 16bit » Sat Aug 11, 2007 4:40 pm

well been driving the car today and its great. It feels like the car mazda should have produced. power delivery is so smooth you would be forgiven for thinking that it had a v6 in it (hats off to chiptorque for the tune). it idles great, starts great and goes pretty hard. official power result was 136.6rwkw on 6psi. I will scan in the dyno sheet on monday. Up close the work looks great and very clean. It has got the largest blower pulley available for it so there will be nothing but more boost to come. I will see how I go with this for a while and may go to a 10psi pulley. I am going to gtech it tonight to see how much faster it is to 100. pre test was 7.1 secs.

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Garry
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Postby Garry » Sat Aug 11, 2007 8:11 pm

How on earth do you get 136.6rwkw with only 6PSI? :shock: Even more amazing considering the parasitic losses of a supercharger.
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tk421
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Re:

Postby tk421 » Sat Aug 11, 2007 8:36 pm

Garry wrote:How on earth do you get 136.6rwkw with only 6PSI? :shock: Even more amazing considering the parasitic losses of a supercharger.


Yeah, I'm kinda with Garry there. Though rotrex do claim an efficiency level up over the 90% from their blower. A 6psi intercooled turbo would generally be about 120odd atw or a little less. They did the run in 4th right?

(not putting s**t on your car BTW, it looked like your install was nicely engineered and put together)
98 NB8A, Mania CAI, Eibachs and Bilsteins, Whiteline brace, Starcorp's, DBA Slotted and asstd bling, FM butterfly brace. FFS coldside and the whiiiinnne. Now 138rwkw (Glory Run :) ) More with tuning.

http://users.tpg.com.au/usethe4c/Green+Machine.jpg

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16bit
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Postby 16bit » Sun Aug 12, 2007 11:14 am

i would say it got that much because it has a proper tuning sollution. it was in 4th gear and from what i can see there is no other trickery going on. its just a well designed kit. will post up the sheet tomorrow.

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16bit
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Re:

Postby 16bit » Sun Aug 12, 2007 11:16 am

Garry wrote:How on earth do you get 136.6rwkw with only 6PSI? :shock: Even more amazing considering the parasitic losses of a supercharger.


centrifugal blowers are the least parasitic and it has a max efficiency of 98%

dont forget that it is tuned on 98 ron fuel too.

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16bit
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Postby 16bit » Mon Aug 13, 2007 10:30 am

Image

there it is

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16bit
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Postby 16bit » Mon Aug 13, 2007 10:32 am

it would appear the standard was 87 not 82 but still happy with the result.

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16bit
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Postby 16bit » Mon Aug 13, 2007 12:29 pm

i know!

farkin fuel though. when you are on it, it goes down pretty quick. Has by pass though so when i am driving normally its pretty much the same.


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