Re: The Miata
Posted: Wed Aug 05, 2015 9:14
Although I'm not living in CO anymore, everyone here has been great so I still will update my progress on the Miata.
Last weekend I bought a rear differential with a 4.30 final drive. The 6spd came with a 3.909 final drive stock. Both have torsen LSD so no change there. After the swap, I drove it around for a bit and the acceleration is noticeable quicker which was to be expected. Couple w/the fact that the trans gears for the 6spd are also shorter than the 5spd trans, it feels like a added 20-25whp. I also, like how the car drops into a more favorable rpm/powerband after every upshift which also aids in the quicker accerleration. Unfortunately I do not have a baseline track to compare before/after laptimes so feel-of-the-pants will have to do -- feels awesome.
I plan to attend a Streets of Willow event on the 15th or 16th to start new baseline lap time and hopefully work my way down. Miata's with my level of tune/parts run 1:28 - 1:32s with the former being really hard to attain and the latter being more common. I'll be entering the car in the Roadster Cup (http://www.extremespeedtrackevents.com/ ... tion-class) in the Mod Class, with the plan to update how I do compared to the competition. I am participating in this class because of my tires (NT01), which I did not want to get rid to fit into a lower class.... aka I ain't wasting these tires!
Next season I plan to participate in the Street Class (which I should fit in despite my modifications) which requires 200tw or higher tires to play in.
TL;DR -- I got a new final drive, it's awesome, I love it. Now i'll compete in an actual miata competition.
Last weekend I bought a rear differential with a 4.30 final drive. The 6spd came with a 3.909 final drive stock. Both have torsen LSD so no change there. After the swap, I drove it around for a bit and the acceleration is noticeable quicker which was to be expected. Couple w/the fact that the trans gears for the 6spd are also shorter than the 5spd trans, it feels like a added 20-25whp. I also, like how the car drops into a more favorable rpm/powerband after every upshift which also aids in the quicker accerleration. Unfortunately I do not have a baseline track to compare before/after laptimes so feel-of-the-pants will have to do -- feels awesome.
I plan to attend a Streets of Willow event on the 15th or 16th to start new baseline lap time and hopefully work my way down. Miata's with my level of tune/parts run 1:28 - 1:32s with the former being really hard to attain and the latter being more common. I'll be entering the car in the Roadster Cup (http://www.extremespeedtrackevents.com/ ... tion-class) in the Mod Class, with the plan to update how I do compared to the competition. I am participating in this class because of my tires (NT01), which I did not want to get rid to fit into a lower class.... aka I ain't wasting these tires!
Next season I plan to participate in the Street Class (which I should fit in despite my modifications) which requires 200tw or higher tires to play in.
TL;DR -- I got a new final drive, it's awesome, I love it. Now i'll compete in an actual miata competition.
