TheNick, are you still using the stock Torsen?

 

Yes sir. Like Matt - I've got a lot more low hanging fruit to tackle before changing the diff.


We might play with it midseason - but I doubt we'll make any major changes like that to the car before Nationals. Unless some money appears out of nowhere - the LSD will be a 2011 thing.

 

That's why I asked.
I'm not understanding how an LSD became such a priority if there are some on here that claim little to no wheelspin with the stock Torsen and street tires.
I, like you, have my sights set elsewhere for the time being.

On a different subject, I need some clarification:



What constitutes an engine mount and trans mount here? Anything beyond parts 1 and 4?

 

Regarding aftermarket mounts in ST.... I highly recommend not replacing them. The metal rule along with the location rule is a huge albatross to get out from under, and almost anything that's not a derivative, or modification, of the stock mounts will result in a protest.

If you need stiffer mounting, get some busted mounts and fill them with poly.

 

Those guys are cheating, blatantly might I add.

 

Because the way you wrote that doesn't have enough ambiguity for the Solo Rule Book. You were far too precise.

Only thing I would change is the 1.5" deflection: you'd have to specify a load for that deflection. One can get 1.5" deflection at the roll hoops, given enough load.

 

I disagree in regards to the S2000 mounts.

I can use less metal in both mounts 1 and 4 above, and have them mount in the factory locations without modification. What's subject to protest there?

 

WRT the engine mounts, you are wrong, yet again

I asked the SEB/STAC about this a while back. It is quite clear, especially with the latest clarification.

meaning that you can substitute parts 7, 5 and 4 in the picture below:



This was also clarified specifically for the Miata a few years back:

This means that the Innovative mounts are possibly legal, or something similar. Due to the stock parts (7,8 in pic) being aluminum and rather thick, and the Innovative being steel and a good bit thinner gauge, there should be less volume in metal for the aftermarket mounts. I have seen the aftermarket Innovative parts in person, and they are nice pieces. I am still going to check the volume of metal in each before putting them on the car. If there is too much metal, there should not be any issue drilling some holes in the steel pieces to add some void. The only other legal issue to check for is to make sure that it does not change the height of the engine in the car. I asked Innovative about this, and was told that it does not.

Innovative mounts:


As for the transmission mounts, this was not clarified similar to the engine mounts yet, but it would not be hard to sandwich some delrin or rubber material in the stock location.

-Brian

 

I would not be using the Innovative mounts as I am using my own design.

The transmission mounts #1, 2, and 9 were the basis of my inquiry, but since no clarification has been offered for them in the same manner as the engine mounts, I'll just be replacing both #1s, for now.

 

That test was confusing in itself if you ask me. Its a 36/37 sec course but is not autocross oriented, lol I dont see the point of the test, the conditions could have been much better IMO. I'm not trying to prove you wrong, my point was the best diff in the world isn't going to make that big of a difference between the second best diff in the world all else factored in.