Bob, and others who may be in is position---
Of course we wouldn't want to "shorten" the drive shaft if it weren't
necessary to do so. It would seem prudent to compare the two diffs to
see how much farther forward the pinion shaft and its flange locates. If
the Nissan diff is two inches "longer" and it uses up too much of the
slide in the propshaft and tranny tail shaft splines, then the seal at
the tranny tail shaft is at risk. At some time in the future I will
probably go the Nissan limited-slip route, and this would be my thoughts
about the possible shortening.
Dick
Sender:
From: 75TR6@tr6.danielsonfamily.org(Bob Danielson
Last night I posted a question about who had the Toyota 5 speed and
Nissan diff combo and if they had to shorten their drive shaft. I got a
lot of off list responses and no one had shortened their drive shaft
except for one person. This morning I had a 30 minute call with Herman
to understand (or try to) why he now says it HAS to be shortened.
Basically, there are 2 slips in this set up: Slip 1 is the flange on the
rear of the tranny and Slip 2 is in the drive shaft. Both slips can move
in and out, effectively lengthening or shortening the overall length. If
the tranny flange is moved in too far it will damage the rear seal over
time causing it to leak and eventually leak bad enough to cause total
fluid loss. It's happened to one owner already while on a drive &
destroyed the tranny. If the flange moves out too far (more then 7/8"
from the seal) it causes a whipping action which will wreck the tranny
bearings. Herman says to have the driveshaft cut to length, remove the
slip and end up with a solid drive shaft with no clamp. I'm only the
messenger so If you have questions, you might want to contact Herman
directly.
Bob Danielson
1975 TR6 CF38503U
Running w/ Throttle Body Injection
http://tr6.danielsonfamily.org
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