No worries, I'm finally catching up...

 

Does anybody know exactly the rules regarding differentials? Of course we can replace the limited slip with another limited slip in the stock housing. Is the housing open too? It seems like it as far as I read the rules but maybe not. OS Giken was saying that getting one of these - http://www.gotuning.com/product_info...roducts_id=297 - will significantly lessen the chance of diff failure. Not sure if I want to spend the big bucks, but if I do is it legal?

What about differential coolers, he was saying that was an alternate way to do it? My reading of the rules is telling me that's not legal.

 

not legal. the only thing you can change is the differential itself. everything else inside and attached to the pumpkin must be stock, and unmodified.

 

Thats what i figured after more thought, thanks.

Do you think it would be a feasible rule change to write a letter about, to allow a housing change without changing internals from stock other than the LSD? Or is there some crazy go fast thing I'm unaware of that you could do by changing the diff housing?

I'm sure if the spoon part is $950, a non-spoon version if we could get someone to make it would be like....$20?

 

Historically, the STAC and SEB have not allowed these kinds of rules because they open up possibilities for cars that are unaccounted for. Sure the s2000 is a known quantity and all we are looking for is more reliability to go along with our additional performance. Rarely do they see it this way. This same issue arose around head studs on ST civics. The point being that your ability to push the car to its limits is part of what limits your ability to go fast. By enlarging that envelope, you also make the performance potential of that car, and every other car in the class larger.

Also consider this. Some of the goals of the SEB and STAC is to maximize competitiveness, attract new competitors, and keep the current competitors happy. If your car is already built, this is a small additional component to add to your build sheet. If your new to the class, and you have to add one more thing to break down that perception barrier of what it takes to win, you're likely to try something else.

 

I completely understand what you're saying which is why I asked. On the other hand, if the way to be fast is to have an OS giken that you have to replace every few months for $1600 a pop, or worse the current situation where some cars it just seems to magically work and others it breaks consistently, then this is definitely a problem that will hurt the class big time.

They have strengthened the side gears to fix Annie Bauer's failure mode, so maybe it won't be a problem anymore (which they think should be the case), but the guy basically said that there's not all that much they can do because the stock differential housing is tiny and with the added size of the Giken they can only get a miniscule amount of oil in there....

Guess we'll just have to wait and see

 

Or you can run the stock diff, and still be fast. Maybe some of the other clutch pack diffs are better in this case, trading longevity for ultimate performance.

 

So i definitely gave up around page 95ish or so. Did i miss anything? (just kidding)

 

This.

 

sorry for the noob question, but can somebody tell me what STR class is?