Well... i have a 2.66 first and the 4.11 and on first and second... there is not much I can do...

On the track.. i gained .5s launching on 2nd gear... (this is with fireston ez50ep)

 

I've never ridden in a car that had it, but there are a number of well-respected RX-7 community people who have it and give it rave reviews, as well as some in the Supra community. The Blitz Supra which was used to set the sub-8 minute (7 min. 49 sec.) Nurburgring record for a tuned road car was also using RaceLogic's traction control system.

I sat on the fence for quite some time before I was convinced, but as far as I can tell, it's the least invasive traction control system the average consumer can buy. It's supposed to be nearly seemless in the way it cuts power, unlike the Supra's stock system, which slams a throttle blade closed and cuts air to the engine resulting in an almost complete bog. The Corvette's system is a little better, but still cuts power so heavily that it often results in a bog. This system cuts power but keeps the wheels moving at the set amount of allowed tire slip, so you're still making forward progress at the limit of traction.

Everyone who I've talked to who has used the unit says it's the best thing they've ever done to their car, next to making more power.

 

Not sure why it's cheaper. It was rated at 400 lb-ft. of torque as opposed to the 450 lb-ft. of the 2.66:1 T56s, but Borg Warner specified that those ratings were for 24 hour continuous power handling, IIRC. I've never heard of anyone breaking one, and if anyone has, it was probably in a situation where a 2.66:1 version would have been at risk also.

 

I should also tell you that I'm cheating on the street and running 29" tall tires.

 

Damn those are very big tires!!!! they should weigh a lot.. which tires are theese?

 

Dammit now i want one Do you know offhand who has the best price on one?

 

Matrix Engineering in Portland, OR is the only authorized RaceLogic dealer in the United States, so there's no price shopping to be done, unfortunately. I helped organize the last group purchase, and that's your best bet for saving some money on the system and extra features.

If there's enough interest, they can certainly start another group buy, assuming they become a forum sponsor. In the previous group purchase I urged Matrix Engineering to become a sponsor on both forums involved, and there was no problem with that. I'm sure they'd do the same here.

Standard price for the V8 system is as follows:

Racelogic Adjustable TC w/ ABS (Max 12cyl) - $995
Racelogic Adjustable TC w/ Launch Control & ABS (8cyl) - $1300
Racelogic Adjustable TC w/ LC, Data Logging & ABS (4/6/8cyl) - $1595
Full Throttle Shift option - $175

The full throttle shift option must be purchased at the same time as the system. It's not something you can easily or cheaply add later, if you change your mind.

Here's the contact information for Matrix Engineering. Jeremy Williams is the contact for RaceLogic systems.

Matrix Engineering Inc.
4060 SW Macadam Ave.
Portland, OR 97239
503.443.1141 Tech
503.443.1142 Fax
888.249.0013 Orders
jeremy@matrixengineering.cc
www.matrixengineering.cc

 

What is the launch control??? the rev limiter at 3000 or whatever rpm I desire??? if I have an MSD all I need is a 2 step...

 

http://www.racelogic.co.uk/launch.htm

 

I think its cheaper to do it with the MSD and its the same thing...

 

As only a two-step rev limiter, sure... as traction control tied into the rev limiter? No.

RaceLogic's version allows you to hold an rpm that would normally result in tire smoke and the traction control system then controls the inevitable wheelspin during the launch. With the MSD, you can only launch at an rpm that's limited by tire type and available traction, and all it does is allow you to keep the throttle floored without over-revving so you can concentrate on the tree. No help with traction whatsoever.

Furthermore, it makes sense to get both the rev limiter and traction control in one package if you don't already have a two-step, doesn't it?

 

Please explain further more...

If you have a 2 step (I already have the MSD) you put a rev limiter to what you know the trac control will help... As I see it.. it works exactly the same way...

 

Highlander, it looks like Jim explained the Racelogic system quite well. Instead of keeping this topic going off in left field lets try to get it back on track. Maybe if you need further explination of the system, either contact Racelogic themselves, or send Jim a PM.

Thanks.

 

Only 235/75R15s on some cop car rims (for now.) They aren't lightweights, but I think they weigh less than my 255/50ZR17s on impala rims. I think the extra height of the front tires helped my ET a bit too

I am considering getting some lightweight rims to put these on to shave several pounds.

I'm also considering putting some 295/65R15 BFG drag radials on the back

 

Thought some of you might be interested in seeing how this turned out. I finally found the time to finish my Cobra 8.8" IRS conversion.

The finished components (close-up) after powder coating, including my engine cradle. The Driveshaft Shop made the hybrid ('03+ Cobra inner spline, '93-'95 RX-7 outer spline) 300M chromemoly center shafts to my specifications. Here's a picture of the completed axle assemblies.

So this finally became this. A close-up of the suspension (polished), and the rear mounting bracket which ties into the stock differential mounting tabs.

I ended up going with a Zexel T-2R Torsen differential and 3.55:1 Ford Motorsports gears to start with. I didn't want to drop too much in the upper gears, and with the 2.97:1 first, I've got a final drive (10.54:1) almost equivalent to a standard T56 (2.66:1 first) with 4.10s (10.90:1 final drive). In other words, plenty of gear.

BTW, other 3rd gen. RX-7 owners liked the setup so much that I've already sold several copies and will be having another 5 or 6 made soon. Here's another picture of the "clones".