2 replies to this topic

[Jeff Lyon]

There seemed to be plenty of interest in a TSM (Turbo SM) Class a few years ago when Tim Buck and John Reed were developing a car but it has seemed to kind of fizzled out. I have decided to try and reinvigorate the idea with a very simple formula for the class.

I am in the process of putting the package together and I have a donor car, a former Justin Hall regional 1.6 owned by Doug Gale of TrackMasters Racing, and I plan on fully documenting all of the collected data here.

My goal here is to put together a package in the $4k range that can be bolted on in a weekend, still retain the 1.6's robustness and be able to keep it policable whether that be with swapable ECU's or reading ECU's and checking pop off valve settings.

Here are the package specifics:
CXRacing Intercooled, Bolt Turbo kit for 1.6l Miata $1299 CXRacing Turbo Kit Link
4.1 Torsen Diff $500 - 800
94+ brakes $600
15x8 wheels (12# min, 6UL is 12.3#) and 225/45 DOT tires (testing with Hankook) ~$1200

The idea is simple, about 60 more RWHP, I am targeting 180 at the rear wheels (6-7 psi boost), the slightly taller 4.1 Torsen that everyone is tossing for the 4.3, upgraded brakes and more rubber.

I will be putting the car on the dyno before I do the turbo work so I have a baseline.

There are still questions as to whether the turbo will work with the stock ECU and I will figure that out. There is a MSD module that is available for about $150 that can retard the timing during hard acceleration to prevent pre-detenation, that may be an option. The other option would be the Plug and Play Megasuirt ($700) but that would be more difficult to police in a spec class. If we ended up with the Megasquirt solution we would have to come up with a conservative program that would work in all regions and then have some quick way of checking for that program in a post race inspection.

If we get interest in the class and have SM'rs start converting their 1.6's to TSM's then we can create a governing forum and start refining the spec with regards to suspension, fuel pressure, aero, tires, injectors, AFM (this can actually be easily replaced with the Megaquirt), etc.

I figured the simplest way to get this going was to modify as few things possible initially but still have enough changes to make a substantial performance improvement to the platform.

I will be updating this thread with build notes. And once the car is built I will be racing it in a few NASA races, probably in PTB to gather some performance data.

Let me know what you think.

[Johnny D]

Just throwing this out here.
http://sfbay.craigsl...2302297327.html
Not mine.
J~

[Rob Burgoon]

Your studs will fail.

Here's what you're looking for.

http://www.supermiata.com/