ever wonder exactly how the rear diff lock works? video!

[speeding-g60]

well, i was sure i posted about the only pass (launch actually) that my car made this year. not me driving, due to shoulder surgery.

back story; went to fire the car up, and seems like the T-stat held water and when it got cold it froze and shattered the block on cyl #2. FML. build whole new block, use all same hardware with new bearings/rods.

dyno it with 10 less psi (38 instead of >47psi) and still pushed out 760 awhp ~580's wtq. GOOD!

drop in an OEM B5 S4 trans, in fact the actual one i ran the first 9 second pass on. make ONE SINGLE LAunch. car goes to the wall, and parts on the track. we done.

i built a motor for one launch this year. lighter side? saved a lot of money not running it this year.

but, this is what i found today. i knew this was what had happened, but not to this extent. and no, the diff lock did NOT come undone this time.

another shitter was my injectors got wasted over winter also. and to run this dyno and track day, my Honda buddy loaned me his 2000cc injectors and skipped a day at the track himself so we could do this. this one single show was the only planned runs for the car this year.

fire it up for the first time.

[youtube]http://www.youtube.com/watch?v=PAjKWnS2lDU[/youtube]

breaking in the motor on the fyno. give it a few light load passes and press it HARD.

[youtube]http://www.youtube.com/watch?v=thY7cy3wQJY[/youtube]

then go to the track with my alternate driver, and this, is what we get. this was a HARD launch should have been in the 1.3x range but he was out of it before the 60' lights.

[youtube]http://www.youtube.com/watch?v=OFSdWlIQ7Dk[/youtube]



the things i do for this sport.

[speeding-g60]

But this is tonight's discovery. surprising thing is the first couple pictures is EXACTLY how it came down out of the car. that top piece just sitting there. what is amazing is that i drove it around the car show to park in the show area, then in the show promoters booth, then to the pits, and lastly into the trailer where we flushed the fuel and pulled the injectors for the owner.

but i drove it all around and that piece of diff casing never fell off!

[chaloux]

Holy. Lol. She dead

[varia]

Looks like Aaron has his own method opening a diff

[scubagli]

Carnage

[speeding-g60]

inside view of the rear diff lock working. Pix inside the lock portion.







aaaaaan FINALLY the videos are done uploading! man the interwebz traffic last night was HORRIBLE!

made two vids as YT will probably kill the sound on the first one as the music was playing, i have had it happen before.

also keep in mind this is without spider gears present. if they were intact rolling one side would make the other side rotate in the opposite direction, until the lock was engaged then both sides would rotate the same direction.

i suppose if i were really bored i could take another one apart and put a good diff in this case to demonstrate that. i have a couple extra, as i now consider this a perishable item and therefore stock up on them when i see them

[youtube]http://www.youtube.com/watch?v=AWKf3IZXowE[/youtube]

[youtube]http://www.youtube.com/watch?v=QVjS4f1hXPQ[/youtube]

[DE80q]

Hahaha! I'm glad they didn't kill the sound on the first one. I always thought it was a non sycronized lock ring, and now I know. I guess breaking shit sometimes has a plus side.

[All_Euro]

Cool to see the diff in action... good use of the "vent"