Rear end set up

[rx7chris]

Just got a real gear. Want to know if it's possible to set it up by myself. Have any of you ever set up your own? If it's possible to do, what if any advice can you give me.

Thanks in advance,

I've done one rear before but it was free and didnt really care if i tore it up. Dont want to do screw this one up.

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Chris
IT7 #88
PowerTrip Racing
http://www.geocities.com/ptripracing/

[Tom Donnelly]

I used machinist blue dye to mark where the gear teeth hit. The 240z diff uses shims on the outside to change the alignment of the ring gear to the pinion. Its trial and error as far as I can tell. Put in shims, put on some dye, snug things up and turn the pinion. disassemble, check where the teeth are hitting. If they aren't riding centered, take it apart, clean off the dye and repeat. Anybody have more sophisticated instructions? I don't mind an eductation either. Not all diffs are the same.

[moto62]

Originally posted by rx7chris:
Just got a real gear. Want to know if it's possible to set it up by myself. Have any of you ever set up your own? If it's possible to do, what if any advice can you give me.

Thanks in advance,

Hey Chris! You can do it if you have any knowledge of how to adjust the ring and pinion. Hopefully you got new bearings and a crush collar w/ the new gearset. Side to side adjustments of the diff is done with the threaded rings on the bearing carrier. The pinion, assembled w/ the bearings & crush collar in place, is set to give proper preload on the bearings w/ the nut torqued at 130 ftlbs. Torque specs and assembly instruction info is in the Mazda factory manual. It does get pretty complicated so I would recommend you take the pumpkin down to the machine shop and have them do it. Should only cost about $150, and that is Ct pricing However, well worth it. Much easier to just bolt the thing in.
Ray
Rmoto

[rx7chris]

you know you're probably right. there's some special tool you use to figure out what shim you use. special=expensive for one time use. Anybody know someone in Florida that does them reliably well? I kinda figured on 100-150 price range.

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Chris
IT7 #88
PowerTrip Racing
http://www.geocities.com/ptripracing/

[Mazmarc]

Originally posted by rx7chris:
Anybody know someone in Florida that does them reliably well? I kinda figured on 100-150 price range.

Call Mike Vansteenburg at ISC (863-324-4539)or talk to him personally at the track this weekend. He will be at the big black semi usually parked near the small bathroom next to the straight leading to the SaftyPin.



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Marc Dana
#63 ITS Mazda Rx-7
#77 STS BMW 325I