In his post, Vaughn Scott said:
Well, after 7 straight hours last night in the garage, I got the
rear end and driveshaft on my TR7 changed, completing my conversion to
the five speed gearbox (the car's a '76, before they offered the 5-spd).
I chose to do the conversion (while I had the engine out), because of the
high engine speed (3500 rpm) at cruising (65 mph). After I put the engine
in with the trany bolted to it, I found that I would not only have to
change the driveshaft (because of the longer transmission), but I had to
change the rear end, because of different bolt patterns. I didn't mind
that, because that rear only has 20-30k on it (came with the transmission
and driveshaft as a set).
Now to my problem: I'm not getting any power to the rear wheels.
I know the engine is putting out at least a minimal amount of power, because
before I had the driveshaft hooked up, the output shaft would spin when in
gear with the engine on (of course, it also spun in neutral, presumably
because of the fluid transferring torque, just like a torque converter).
I know the diff's not seized, as I have turned it with my hands. It's just
when I let the clutch out, with the car on the ground, it doesn't even
attempt to go anywhere. I'm going to try it on the lift, and see what
happens then. However, it seems like it just isn't getting out of neutral.
I know the clutch is working, because I can hear the trany innards turning
when the clutch is engaged (I know, it's kinda low on trans. oil). Could
this be some sort of linkage adjustment problem? Any prompt help is much
appreciated (as is all help, of course), as I would like to race this saturday.
Thanks...
Vaughan Scott Rensselaer Polytechnic Institute
scottv@rpi.edu Troy, NY
Do you have the c[transmission in gear :-) :-) (Sorry, couldn't resist)
I'd try the following tests:
1. Engine off, gearbox in any gear, one rear wheel off the ground.
Try turning the wheel off the ground by hand. It shouldn't move
(other than an inch or so due to slop in the gears, etc.) If you
turn the wheel at all, you've got a loss of drivetrain connection
(probably in the gearbox itself, or in the clutch).
Some things to ponder:
A: Was the input shaft splines for the new gearbox the same as the
four speed gearbox you removed?
B: When you had the engine/gearbox out of the vehicle, did
you verify turning over the engine by hand actually had a
direct transferr of rotation to the gearbox tailshaft if
the gearbox was in gear.
C; Same as above, did you verify the functionality of the
gearbox before mating it with the engine. (i.e. turning the
input shaft by hand to verify tailshaft rotation in all
5 gears and reverse?
Good luck on the problem and keep us posted on what you find.
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