Miata Turbo Forum - Boost cars, acquire cats.

- Suspension, Brakes, Drivetrain (https://www.miataturbo.net/suspension-brakes-drivetrain-49/)

- - Welded Open Diff (https://www.miataturbo.net/suspension-brakes-drivetrain-49/welded-open-diff-22785/)

Quote:

Originally Posted by spoolin2bars (Post 279007)

my screen name refers to my galant vr4.

http://i6.photobucket.com/albums/y23...s/DSCF0863.jpg

http://i6.photobucket.com/albums/y23...s/DSCF1375.jpg

not my miata

http://i198.photobucket.com/albums/a...s/mymiata1.jpg

although if i cared to, my miata is fully built, i would just need bigger injectors and a slightly larger turbo (gt2860 is in it now) to be efficient at that boost pressure. and yes, i would run it on my welded diff.

and no, if you read my previous post you would know why i thought that, but apparently it does happen if the desire to race is there and the deep pockets aren't.

The preferred differential for Spec Miata is still the clutch-type. While it is true that many national and regional drivers are upgrading to the 99+ TORSEN type differential as allowed by the 2007 General Competition Rules published by the SCCA there are still several top level teams that will swap out the clutch type for track specific needs, and various events where the .1 - .2 s/lap difference makes a difference. The torsen is heavier (markedly) and a bit "slower" but much more reliable. Very few, if any, competitive drivers are using a welded open diff. Not only is it slow, it is not legal as per the GCR. For the record I do not believe the open differential is technically legal either, but it's so damn slow no one would care if you used it, and I did for several years when funds were limited.
-Blake Thompson
SM 97
2008 June Sprints Also-Ran
IsellMiataParts.com

and yes we are pretty amusing although not nearly as amusing as u mormons!
i'm sorry i meant to say ''morons''. whateva, same thing. then again, i'm from michigan, but i got down here soon as i could!

So quick to assume every person in Utah is Mormon, huh? Ever think some people move here because skiing is 25 minutes away, and we have one of the best tracks in the country http://www.millermotorsportspark.com/?? That would be like me saying that maybe you do fit in with the ignorant monkeys that screw sheep down there!! Although I am a "Mormon" and some of them are morons, I tend to refer to most of them as Utards. I didn't grow up here and neither did my girlfriend, if we get married we would move to a more coastal climate.

btw, I had a friend in Colorado that was a gvr4 nut and had that thing playing with liter bikes. He had a white one and his brother had a green one, plus they had one or two for parts.

In the old days I ran an RX-3 on the street with a welded diff. I purposely ran skinny tires and had no problem going around corners at low speed. The traction was incredible even with the 175/70-13's. The only time it was annoying is when pushing the car and turning the wheel at all.

I was going to run a welded 1.6 diff at a drift even but ended up just installing the Torsen. (because after welding the spider gears I lost my mind and sprayed carb cleaner on the hot bits and heard a big 'clink' which was something cracking in the diff. I immediately threw it in the junk pile and installed the Torsen)

weld it. i had 3 welded 1.6 and have been on my 1.8 welded for over a year now. it is little more understeery in tight stuff but you cant expect t0 take an ramp in the rain at full speed and n0t expect it kick out

I will one day weld mine too.

Quote:

Originally Posted by rappadan (Post 303444)

It pushes more with the welded diff? I would have figured you would be more likely to over steer.

Haha yes both actually, around roundabouts....(if you have them up there yet) or other tight corners it does cause understeer- drop the clutch a bit and that remedies that problem. :giggle:

The only real annoying thing, is going through a drive thru - all the other times you just look tough!