Experienced rod bearing failure at my last local AX. It was slightly over full on the right oil. Happened in a long right hand sweeper, which i hear is common but not at STU power and street tires. It's a bummer.

Anyone have any similar experience?

Looking to rebuild - stay stock and in STU or build it and go BSP?

I'm in Salt Lake and I haven't found a shop I feel great about doing the work. Looking west to CA. If anyone has experience with a good shop I'd appreciate it.

Kevin

 

I don't know what your rule are or how you'd ever get caught but............I think the absolute best engine for an autocross EVO has to be the new 2.3RPM we build. I love mine and so do the other guys who are running them, I believe about 15 of them so far. Cover car on DSport Magazine this month has one in it.

 

I agree with David, except for the cheating parts

I would suck it up and say "welcome to SM" and have fun. You don't get an opportunity to build up a motor very often.

As far as shops....

In Northern CA, you have GST motorsports www.gstmotorsports.com, full function www.fftec.com, and I know I am forgetting some..

In socal, I only know of www.RoadRaceengineering.com.

good luck!

 

Only difference between a BSP and STU motor is a minor overbore. Otherwise, same turbo, intake, exhaust. Just add bigger injectors and crank up the boost and you have BSP.

 

Thanks for the thoughts so far. It's a tough call STU/BSP/SM. Just looking at tire costs alone scare the crap out of my wallet.

2.3 stroker I'm sure is awesome but not remotely legal. Maybe someday.

I believe BSP allows a larger overbore (a minor overbore is allowed in stock and st), it also allows forged parts, balancing - as far as engine work. Lots of other stuff to be competitive - diffs, e85, injectors, pump, etc.

Thanks for the shop suggestions, I've contacted some of the ones mentioned.

Kevin

 

IMHO, stay STU. Street Prepared seems sort of risky right now with the potential reorg, and once you get to SP, you can break every OTHER part of the drivetrain instead of just the clutch. SP seems like a great way to take a car that can still be sort of streetable and make it a total garage queen.

 

BSP does allow forged pistons, but not forged rods (which are the real important part when building a motor for more power/torque). You can't technically "build" the motor in BSP. See 15.10-S:

"S. Cylinders may be rebored to no more than 0.0472 in. over standard bore and the appropriate standard oversize piston may be substituted. This overbore dimension is an absolute limit; no additional tolerance is permitted to accommodate wear. Cast or forged, non-stock pistons of the same dimensions and configuration as original equipment pistons may be used. Additionally the replacement pistons must be of the same weight or greater as the original equipment pistons. Replacement pistons must match OE piston configuration exactly including quench area. The allowance for the use of aftermarket forgings vs. OE castings does not permit alternate piston dome designs. This allowance does not permit alternative ring configurations."

 

That sounds more like SM . A lot of BSP Evos (prepped at the national level) are still streetable.

 

You have enough injector to run E85 in STU also. Swapping to forged pistons isn't going to do you a whole lot. You might as well build an STU legal engine, then you can always go run BSP. But that way, if you ever want to go back, you can.

As far as diffs, if you haven't done the STU diff rebuild to factory specs, then your missing out.

 

I've looked for forged evo pistons that would meet 15.10.s and came up empty. None of the aftermarket pistons that i could find have the same crown design as stock. The stock pistons just don't seem to be a weak enough link in BSP for me to justify the cost of custom designed pistons.

 

Yeah, that's what I was getting at.

 

Heh, a friend and I are having a hard time dealing with SM rules as well. Got 3rd last weekend at a hillclimb, with a 15 second gap to 2nd. Street tires vs DOT Slicks... seriously???

 

Kevin, I think you should sell the car with the ill motor and buy mine. STU ready and rockin!

Brandon Ranvek
81 STU

 

Brandon,

I called - you said it was sold? Did Andrew end up not buying? I still may be interested, have not sent my car to be repaired yet. The costs are escalating.

If I don't buy the car will you sell your Wedsports?

Kevin
801-391-7234

 

I tried sending you a text to let you know Andrew still has not committed. Andrew is holding back bc hes had minimal interest in his MS3 for sale and that car has to go before he can purchase mine.

So yes, its still for sale.

I decided I want to keep the Wedsports for running street tire index at some of our local events bc certain surfaces aren't hoosier friendly. So without the Wedsports my asking price is $24,000. It would still come with the 5zigens and stock wheels with winters.

507-358-3926
Brandon Ranvek.