PseudoRealityX

That's in stock trim I'm assuming? Or was Andy talking about ST prep?

Andy knows his stuff....too bad he's Andy.

Loren

I'm sure he was talking stock. How much bracing are you allowed to add/remove in ST? It's been too long since I studied the rules. (btw, jaball, that's the first thing you should do is get completely familiar with the rules of the class you're looking to get into... if you're going to get "serious" about it, anyway)

I think I've heard that about Andy before. I'm just glad that he shares that knowledge with us from time to time.

jaball77

There's no update/backdate any more... So if it wasn't available, you can't add it, and if it WAS there you can't remove it. Especially to save weight, heh.



Jason

Matt Vassallo

you guys have never thought about rebuilding your vlsd and adding the wrong type of viscous fluid have you?

Loren

I've seen that question raised on Miata.net. Someone has probably done it, they're just not talking much. I mean, the only people who are seriously using the VSLD are doing so because their rules (like this STS2 class) don't allow them to use something better. So, if they're doing something "sneaky", they're going to keep it hush so as to not give away their advantage.

Outside of a restrictive rule set like this, the Torsen is a much better option, and there are also aftermarket clutch-types available for the Miata.

PseudoRealityX

a) anyone serious enough would just use a Torsen.

b) why would anyone talk about something illegal for the class they're playing in.

jaball77

No kidding. What's the fun of winning if you know you had to cheat to do it?

mofugga

exactly why you never talk about the cams you've put in the MR2

Loren

Would it be illegal to put different oil in a diff? I'm not so sure about that. It would just be a "competitive advantage" that you might not want to share.

Now, if you had to physically modify the diff to change the oil, like drilling a drain hole or something... that would be illegal modification. But if you could change the oil without altering the parts, why not?

What next, are they going to start checking oil viscosity? "It's 85 degrees today, your owners manual specifies..." I don't think so.

nunyo

Jason, mid way through the '91 model year they switched the crank style from the earlier setup that everyone seems so concerned about. You can tell based on whether the VIN is after xxxx209446. My '91 has the '92 and up style crank.

So if you wanted to consider a '91 for the weight savings due to lack of bracing lack of bracing, you could. I have no idea however if the bracing is something that is really better to have despite it's weight.

I too was unaware of the different gearing, if the 1.8 is actually 125 lbs heavier than a 1.6 equipped car, I'd say that the reduced weight and ability to run the viscous diff make the 1.6 a better starting point.

It doesn't hurt that by being slightly older it should be a little bit cheaper to purchase one as well.