Maybe time to start a thread on the topic like the STR and BSP guys have.

I'm thinking that turbo track S2000 has been fun, but with our CR going to SCCA Club Racing will probably not do much open track anymore. Plus the wear and consumable cost is not really exciting to me unless in competition.

Marc and Robert are thinking of prepping for SSM next year. I'm thinking in the next 1-2 years I'll probably bring mine back and prep it too.

We did run it back in the day when SC'd using Uyeda and Tipples BSP setup from ~ 2008.
Currently on my "must do" list for SSM as a starting point for others:

17 or 18 x 10 or 11 wheels
285-315 A6s or similar
Shocks and springs
Swirl pot or additional pick up for fuel starve
Turbo or positive displacement SC
Clutch differential
Upgraded rear (pinion will otherwise fail) and axles

Currently with GTX3071R on E85 twin scroll and feel like it's a touch laggy still.
Currently with 1000/800 springs and feel it may be a little stiff.

I thought we'd talk about nationally competitive builds. I know that one can get FTD all day locally with just a centrifugal blower strapped on. We're not talking about that kind of build.

 

Do all the STR/BSP weight savings stuff
Replace: front fenders, hood, trunk, mirrors, and brakes with something lighter
Replace stock fuel tank with a fuel cell
Remove all sound insulation from hood, washer bottle & nozzles, hood latch & hinges,
Add: bigass wing & front splitter, traction control

If my math is right, minimum weight for an SSM-legal F22 would be 2311, and an F20 would be 2279, which should be achievable.

 

Not to derail the subject, but why hasn't anyone done a full on 2.2l FP build?

 

I'll just leave this here...

 

I don't think that's achievable with the extra weight for go fast stuff. Especially when you start adding reinforced stuff. With SSM you have to keep full interior so no gutting.

You've taken apart more S2000s than I have so maybe you know something I don't?

Was kind of thinking that lightest STR prep is probably 2550. I don't recall what Robert is down to in his BSP build, but I don't think any lower than 2450 or so. Then you have to add weight back with power and reinforcement mods. I don't know how you can really get an SSM S2000 lower than around 2400 with a lot of pain and probably around 2500-2600 realistically.

But that's just off the top of my head. The other way around it is to use a bigger engine to up the minimum weight... I think the Strelnieks car has minimum weight around 2600. I think if I do full prep, I'd like to try the J37 small turbo setup. Minimum weight ~2600 which should be less painful to achieve.

 

Sounds pretty close to spot on. I know there is all this fun stuff to cut out, but i just dont believe that is what makes a car fast. rigidity is key, with that, i would love to make the SSM car match the weight of the BSP car. I dont think it would ever get lighter with the added FI.
In STR i think i was the lightest at nationals at 2545 race weight without driver.
In BSP i have only matched my weight of 2545, however i have extra weight left in brakes plus trunk. I will be 2500 when i put the STR wilwood setup back on and get ap1 trunk.
That said, 2500 even would be a realistic yet challenging goal for ssm. Thanks for starting this thread!

 

so why not build a 2.4, 2.6, 2.7 strokers and turbo it? The J37 swap would be neat and have tons or TQ but at what cost, I don't know of any bolt in kits for that setup. Is the K24 setup bolt in yet?

 

I really can't help but think that the turbo really needs the larger displacement to get the throttle response and spool you'd ideally look for. I'm not talking about "kind of fast" or "also ran." I'm talking about fully competitive with the Strelnieks' car. When you listen to those things spool up, it's crazy. 3-rotors move a crap ton of air. I'd be looking to do something like that. If you can't get to minimum weight physically, I'd be looking to maximize to the rule set... which means more displacement and a small turbo.

I wish Honda made a commonly available V8 that would work for the application.

Just so we're clear, I think a 2.4-2.7 stroker would be great, but I think you'd still give up spool or power in the low end. Probably could get the car to SSP speed, but I don't think quite to SSM speed. Not to mention that the lower redline with the strokers would kill gearing.

As context, when Wynveen drove our kinda BSP+SC'd S2000 back to back with his SS Vette, he put down identical times. So it was fast. But wasn't SSP or SSM fast.
With our current turbo setup, I'd think the car would be SSP fast, but not SSM fast. Geometry and dimension wise, the S2000 is similar to an RX7 for the most part. But even with a 2.7L engine, it's not going to flow air like a 3-Rotor. Without the ability to make an SSM legal 2300 pound S2000, I really think it needs more displacement.

So the J37 would be more for the air flow than the torque.

 

Also keep in mind that if you add turbo a 2.5L Subi engine, you get a WRX or STI....

Add a turbo to a VQ3.7... you get a GTR. Add a turbo to a J37... might be very wicked.

I don't think a 4-banger is going to cut it. It works in Evos, but AWD may not need as much throttle modulation as RWD.

Just my thoughts. I could be very wrong.

 

Here's a build thread I just found...

http://honda-tech.com/showthread.php?t=3017287

I think it would take alot of custom fab or alot of money to pay someone to do all the custom fab work. C-Kit, seems right up your ally. $$$$$

My cousin has a J35 sitting in his shop right now that came off a crashed car that only has 12,000 miles on it but I don't have the car or funds to do a build like that.