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Track prepped Rotrex Supercharged Miata

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Track prepped Rotrex Supercharged Miata

 
Old 11-22-2011, 11:50 PM
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How is pressure being relieved from the crankcase when the engine is in boost?
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Old 11-22-2011, 11:58 PM
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Originally Posted by rlogan View Post
Can you get a couple of pics of the radiator setup by chance. I am rebuilding the front end of my car and it might help in some of the plans I had. Everything between my frame rails is already removed so this might be an option for me
Originally Posted by rlogan View Post
Nevermind, hadn't seen the whole thread
This might help.
Attached Thumbnails Track prepped Rotrex Supercharged Miata-img_2124-2.jpg   Track prepped Rotrex Supercharged Miata-img_2118-2.jpg  
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Old 11-23-2011, 12:09 AM
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Originally Posted by chpmnsws6 View Post
How is pressure being relieved from the crankcase when the engine is in boost?
Good question. I assume it's being pushed out the open vent on the drivers side of the valve cover.
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Old 11-23-2011, 03:05 AM
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WOW, That is my dream car. I love the autokonection fast back kit......I would have that in a heartbeat if they were available here !! (New Zealand)

Stunning.
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Old 11-25-2011, 04:49 AM
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Originally Posted by chpmnsws6 View Post
How is pressure being relieved from the crankcase when the engine is in boost?
That's the first think I noticed when I looked at the engine photo.
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Old 11-29-2011, 05:59 PM
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I spy red prancing horse:
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Old 11-29-2011, 06:55 PM
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prancing red horse, timing belt[s] exchange
Attached Thumbnails Track prepped Rotrex Supercharged Miata-miata-5-11-11-024.jpg  
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Old 12-01-2011, 12:30 PM
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There's something entirely fucked up and wildly appropriate about a Ferrari engine sitting on an old, greasy wooden rolling dolly.
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Old 12-01-2011, 02:09 PM
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Originally Posted by Track View Post
I spy red prancing horse:

ZOMG! that's win. Such a shame it's torqueless.
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Old 12-01-2011, 02:16 PM
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Originally Posted by stinkycheezmonky View Post
There's something entirely fucked up and wildly appropriate about a Ferrari engine sitting on an old, greasy wooden rolling dolly.
You're right, it should be in the ******* dumpster.
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Old 04-30-2012, 11:32 PM
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Stepping up the game a bit with some AST5220's. After selling my Koni Race suspension the total out of pocket was 2k. Too good of a situation to let pass so I jumped on it.


The car worked so well with the Koni Race setup I was reluctant to make the change. I opted to keep the spring rates the same as before (850/500). This should make for a well controlled test since it's the only thing being changed.

I added the zero rate helpers after the purchase.
Attached Thumbnails Track prepped Rotrex Supercharged Miata-ast-5220s.jpg  
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Old 05-02-2012, 10:34 PM
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Why didn't you do tender springs instead of zero-rate helpers?
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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 05-02-2012, 10:53 PM
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Originally Posted by Savington View Post
Why didn't you do tender springs instead of zero-rate helpers?
That is a can of worms I would rather not open. I looked at the pros and cons of each then ran it by Tony. We arrived at the same conclusion. Not sure if it was for the same reasons because I did not ask.

The scary part of the change is the possibility of going backwards. This thing worked so well with the previous suspension Dean felt I maybe making a mistake changing it. When I bought the car I asked Tony what would be the one thing he would like to change. He said the suspension with AST/Xida. Got to say you played a role in pushing me over the edge.

My goal is to make it a ST2 class winner. Track record at Thunderhill for ST2 is a 1:50.8 using the bypass. Assuming the bypass is worth 2 seconds we are within 1-2 seconds of it before this last round of changes. It's all about the free HooHoo's.

Last edited by k24madness; 05-02-2012 at 11:52 PM.
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Old 05-03-2012, 08:02 AM
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People do crazy things for that purple crack
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Old 05-03-2012, 07:11 PM
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BTW....this looks like 2 b-series forged at the hip......
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Old 11-23-2013, 06:56 AM
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New motor with forged internals, 11:1 CR, E85, Ported head, ATI Damper, oversize supertech valves, Supertech SUB, custom web cams and supertech heavy doubles.

Rebello ported the head and assembled the motor. Trackspeed supplied the supertech valve parts. I spec out the cams, Tony at TC Design fabricated the plumbing, Intercooler, radiator mounts, air filter housing, Skunk 2 intake and tuned the car.

Attached Thumbnails Track prepped Rotrex Supercharged Miata-295-whp-dyno-2.jpg  

Last edited by k24madness; 11-25-2013 at 02:39 AM.
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Old 11-24-2013, 11:02 PM
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Looks like somebody wants to race from a roll.
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Old 11-24-2013, 11:09 PM
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It's not a autocross car. It's a ST2 car that lives between 5,200 and 7,700 RPM's. With 4:10's and 6 speed it always in the meat of the power band.
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Old 11-24-2013, 11:25 PM
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Looks like fun

What's with the loopy plot in the lower rpm? I haven't seen that before. I'd almost guess wheelspin..

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Old 11-24-2013, 11:31 PM
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The loops are gear changes. The light 5.5" unsprung carbon Tilton clutch is a PITA on the dynapac dyno. You can't really slip it underload and high gear.
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