Spec Miata

Hey 7's-

Well, we're in the same boat...not too many left...they've gone spec Miataing, or Eproding, or to ITS.

I actually threw it out on the North East section of the forum earlier, and basically got the ole' "quit whining treatment"! (I was just wondering, too!)



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Jake Gulick
ITA 57 RX-7
Northeast Region
[email protected]
 
were fighting the "work for test day" battle right now out here.



[This message has been edited by 7'sRracing (edited August 07, 2002).]
 
Hey guys, bring your RX-7's up here to Calgary, in Canada, street-port 'em, and join in the Challenge Car class. zoom zoom.....
Street-ported motors for $2500.00 Canadian money, like about $1.49 US

( I know it's not gonna happen, but I thought I'd mention it anyway...)
 
B. Carter -

I'm in Washington State, and I would love to hear some Canadian rotary engine builder recommendations! A lot of the guys that used to build race rotaries down here just don't anymore. A nice $2500 Canadian dollar street port might just be to hard to pass up!

Boswoj
 
Hey Boswoj,

Call Adam at RX-7 Specialties at 1-403-246-6980. Tell him Brooke sent ya'
He does great motors. He is in business so don't expect him to unload a ton of advice for free over the phone, that's what he gets paid for, but he is a good guy, and builds motors for people all over the place, USA, Europe etc. With headers, stock carb, stock fuel pump/lines and stock engine bits, my streetport is putting out about 170 hp.
 
Bcarter, you got 170 hp out of a street ported 12A with a stock manifiold, carb and headers? Funny thing is I got 168 hp at 8,000 rpms out of a 12A without ports with a header, stock 79 manifold and carb. You need to find different engine builder. My engine builder and I put my motor together under the supervision of and in the presence of our chief of tech and I am sure it's legal. My engine builder specializes in blown alcohol drag motors and he is very particular on putting a motor together right and making power. Email me and I'll give you his name & #
 
Im assuming you guys aren't talking rear wheel HP, right?

Any idea what the conversion would be?

I would love to know what guys are getting for rear wheel numbers.
I'll tell if you tell.....
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Jake Gulick
ITA 57 RX-7
Northeast Region
[email protected]

[This message has been edited by lateapex911 (edited August 09, 2002).]
 
If your looking for someone that builds really good rotor motors try Tony Rivera of TR rotorsports. His prices are very reasonable and his motors are awesome. He has the fastest first Gen E-prod. RX7 in the country right now and he won the June Sprints last year and finished 3rd at the runoffs. He lives in Colorado. His phone # is (303)981-2916.
 
Mike, I want the address of your guy as well. We all run streetports up here, and I pull as well as any of them, in fact I've won the class in the last 5 races, so we are all getting much the same hp. I dynoed mine on a chassis dyno, so the dyno guy used a factor of some sort to go from wheel hp to flywheel...maybe he got it wrong. My engine guy figures the best he's got from a streetport is 180...



[This message has been edited by bcarter (edited August 09, 2002).]
 
Originally posted by Mike Cox:
Bcarter, you got 170 hp out of a street ported 12A with a stock manifiold, carb and headers? Funny thing is I got 168 hp at 8,000 rpms out of a 12A without ports with a header, stock 79 manifold and carb. You need to find different engine builder. My engine builder and I put my motor together under the supervision of and in the presence of our chief of tech and I am sure it's legal. My engine builder specializes in blown alcohol drag motors and he is very particular on putting a motor together right and making power. Email me and I'll give you his name & #
Click to expand...

168 hp out of a legal ITA motor? If this is true, how are these not the dominant car in ITA?



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MARRS #25 ITB Rabbit GTI
SCCA 279608
 
I agree, Bill, somehow it doesn't look like the math adds up. But the on-track result is hard to argue with. Maybe higher frictional losses, aerodynamics, or something w/ the RX7 vs. CRX/240/Integra, I don't know.

What I do know is that the CRX I drove at Daytona in May had no trouble catching and passing the IT7 cars on the banking. They were just pointing me by, because they knew there was nothing they could do about it. And the car I drove had a 120K motor, not some OPM-built rocket engine.

At the ARRC in 2000 (last time I went), the top IT7 guys (some of the fastest 12A RX7s in the country) were turning mid to high 1:47s, versus Bob Stretch (240SX) and Bob Endicott (King Motorsports CRX) who were in the high 1:43s.

I can argue the math, but not the results.
confused.gif



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Chris Wire
Team Wire Racing
ITS Mazda RX7 #35
[email protected]
 
Chris,

I agree, it's really hard to argue w/ a watch. I'm just really curious if an IT legal 12A can make 168hp. Unless the car only has 20 ft-lb of torque, or the gearing is that abysmal, I would think they would be faster. Anybody got dyno sheets that supports the 168hp #?

Like Kirk, I don't know 'dinkus' about rotaries (other than I can sure as heck tell when one lights off at 7:00AM on Sat. AM in the paddock!)

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MARRS #25 ITB Rabbit GTI
SCCA 279608
 
Chris & Bill-

I am almost up to knowing "dinkus" about rotaries...I drive one. But I my engine work is strictly R & R! That said, when I get out of the corner with the other guys in ITA RX-7s, I run right with them...with stock gearing. MY dyno #s? 107 at the rear wheels. Now I know all dynos are not created equal, and the conversion factor can be discussed forever, but I agree....168 is to DIE for !

A note about the Honda CRX vs. RX-7 thing: There is no question that a CRX cleans my clock powerwise.....but more than that, follwing one through a corner is a eye opening experience....they can kill the apex berms, up on two wheels, sideways, or leave a foot at the apex AND a foot at the track in/out and still carry more speed than my hundreds of pounds heavier, live axled antique! I know I can improve the nut behind the wheel, but I can't see how a well driven CRX will ever be threatened by us RX-7 drivers!
It's too bad....I'd love to see a battle at the front between a Cosworth Vega, an RX-7, a 2002, a Golf, and a CRX/Integra!

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Jake Gulick
ITA 57 RX-7
Northeast Region
[email protected]
 
I'm starting to feel better about my 170 hp. I know my engine guy well enough to know that he is giving me good power with the streetport, the straight is enough to show me I have a decent engine, among the 10 or so other streetports out there. We figure about 134.5 hp at the wheels. If you can get 168 out mof a stock motor, the builder must be doing something else. We run stock stuff aside from the ports.
 
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