... Jacking up the car etc. The vin will not give that information? I can't for the life of me find any info on how to find out if it has LSD without getting under the car. I won't be able to get a jack for another week. While we are at it... I can't find any decent info on where to place the jack safely on this thing.
thanks,
me.
You have to lift it and turn one wheel if the other turns you have a lsd. The likely Hood is high that you don't .
I recall the last time of checking the condition of an lsd, I just raised one wheel off the ground and measured the amount of torque it took to turn the wheel. I think it was about ~35 lbs/foot. I forget if this was with the trans in neutral and I'm too lazy today to verify!
Tbd
Basically no.
If your car came with an LSD (looking at vin number) it could have been removed and sold for the money and replaced with an open diff - as I am doing with my 80 sport model.
Or you could just drop the clutch at 2500 rpm and see if both tires spin (burn rubber) for the same distance.
Always FUN TO DRIVE - Build Thread & Tech info - 79 320/6 track car build thread -- Videos of track car -Adam in car Auto-x video - Start-up video - 4/2011 Adam's TOP BMW time San Diego BMWCCA - 4-5-15 Dyno break-in run new M20B25 - Exhaust Thread - Link
Did a quick video for testing per-load lockup breakaway of a 3:91 E21 rebuilt and modified LSD. By modified I rebuilt it with thicker dogeared drive plates (.083") and also added an addition .020" shim to each side. This netted a per-load breakaway of 55 to 58 ft-lbs of torque after 250 miles of break in driving on it.
Note: mrvis if you do not have an LSD, doing this test will show about 2 to 5 ft-lb of torque needed to turn the wheel off the ground as long as you do not have a dragging set of brake shoes.
Side note in video played with added some free usable background music, looking for more places to get usable youtube legal music.
https://www.youtube.com/watch?v=4AmMbAS8Gsc
Last edited by OLD MAN; 10-01-2018 at 08:14 AM.
Always FUN TO DRIVE - Build Thread & Tech info - 79 320/6 track car build thread -- Videos of track car -Adam in car Auto-x video - Start-up video - 4/2011 Adam's TOP BMW time San Diego BMWCCA - 4-5-15 Dyno break-in run new M20B25 - Exhaust Thread - Link
They had the Letter "S" on them, originally.
s-l1600.jpg
Randy
Always FUN TO DRIVE - Build Thread & Tech info - 79 320/6 track car build thread -- Videos of track car -Adam in car Auto-x video - Start-up video - 4/2011 Adam's TOP BMW time San Diego BMWCCA - 4-5-15 Dyno break-in run new M20B25 - Exhaust Thread - Link
Always FUN TO DRIVE - Build Thread & Tech info - 79 320/6 track car build thread -- Videos of track car -Adam in car Auto-x video - Start-up video - 4/2011 Adam's TOP BMW time San Diego BMWCCA - 4-5-15 Dyno break-in run new M20B25 - Exhaust Thread - Link
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