Kevin Allen wrote:
And seriously, if Jim Feinberg's MR2 was actually competitive against Rob's Sentra, he would've been winning by several seconds, not losing by an average of around 10 seconds.
I don't think the MR2 ever got a fair shake out there. Considering it dyno'd at a whopping 89whp & 83wtq, weighed in @~2380 in "race trim", had blown 140k+ original OEM struts and 5+ year-old no-name dry-rotted all season tires on it, I think being a little over 1 second per run off Rob's car wasn't too shabby. Heck, it beat all the other 2wd cars (and a lot of the 4wd cars too) regularly with the exception of Carl when he finally put decent tires on his Neon. I bought the car for $400 (POS class eligible, woohoo!!!

) and just put gas in it. I haven't even changed the oil in it since I've had it!
Brian Herring wrote:
Overall, you are correct -- grip and controllability is more of a deciding factory, IMHO. For our sites, FWD cars do a better job in our loose and sandy sites than RWD, period.
With all due respect, I think that's crap!

We all know the specs on Rob's Sentra and given the way both cars looked on paper when they competed against each other, I think the little MR2 did pretty well. Why split by drive train layout when there hasn't been any proven reason to do so yet?
I was preparing it to come back out and do battle with the 2wd group (new struts, tires and some weight reduction) when a tree fell on it and crushed one of the rear strut towers.

I fully expected it to gain at least 1 second per run and think it could have landed at the top of the 2wd heap. Maybe I'm reading the results incorrectly, but perhaps we should ask Carl what just a decent set of tires did to his car?
Granted, the MR2 is an unusual 2wd car being mid-engined and all but it proves that the 2wd class doesn't have to be split by drive train layout. If I manage to fix it and run it next year, it would be nice to run it with the largest 2wd group possible.
It seems to me that we are seeing the same thing we've always seen in the auto-x world. If you can't make your car fit the rules, make the rules fit your car. Everybody knew the rules going in and yet people go out and buy a car which doesn't fit their idea of competitiveness within a class.
At this point, I don't think we should segment the group much more than we already have (if at all). I can see the need of having a “low-power” and “high-power” 4wd class since they can actually put their power down. As far as the 2wd crowd, I don’t think any of us have really tried to optimize our setups to make use of what we already have. Well, with the possible exception of the Dirtmaster and General Lei crowd since they didn’t have much to work with in the first place!

Assuming the 2wd guys figure out a way to optimize their power delivery, it would seem most logical to break those guys into 2 groups as well.
Similar to Kevin’s proposal on a previous page and what we already have, that would leave:
AWD “high-power” (turbo or > 2.4L seems reasonable)
AWD “low-power” (NA 2.4L and below seems reasonable as well)
AWD rally tires
2WD “high-power”
2WD “low-power”
2WD rally tires
That leaves only the 2wd power option as the dividing line that needs to be established. That’s where I think it gets sticky. If your engine is sitting over the driven wheels, you are probably going to be able to put down a lot more power than the drive train layout might suggest but is that something we really need to worry about at this point? Off the cuff, I’m tempted to suggest a power-to-weight ratio (or torque-to-weight) as a possible dividing line instead of engine displacement but I’d have to give that some thought. The heavy cars with big engines don’t seem to turn well so who knows?
If people are serious enough to run rally tires, they should be able to fend for themselves regardless of the drive train layout at this point. Just lump them into a 2wd or 4wd class and be done with it.
Anyway, before this turns into another master’s thesis, I’ll stop right there…
Jim