Eric & Listers--
I should correct one small error in my earlier post: the rear output flange
of the 2000 saloon J-type OD unit had to be re-drilled to mate with the prop
shaft flange (Atlanta Imports did this before it left their shop). There
were also machining marks on the rear of the unit, but I'm not certain they
were necessary to avoid the frame or mate with the rear mount bracket as I
stated in my earlier post. Sorry for any confusion.
Ian
----------
>From: " " <canada@voyageronline.net>
>To: econrad <econrad@teal.csn.net>, "'Triumphs'" <triumphs@autox.team.net>
>Subject: Re: 2000 / 2500 Transmissions vs. TR6 Transmission
>Date: Thu, Jun 15, 2000, 10:00 PM
>
>
>Eric--
>
>The unit I put in my 76 had been reconditioned by Atlanta Imports, so I
>can't tell you first-hand what they're like when they come out of the
>saloons. I was TOLD by AI that I was buying a gearset with ratios identical
>to a TR6. (Actually, they said it WAS a TR6 gearset.) Running with the new
>unit, the rpm shift points seem to be the same as before. However, the
>lightened flywheel I put in (18lbs) complicates things because the car gets
>up to the rpm shift points quicker. There could be minor differences in the
>ratios, but I seem to be shifting at the same rpms as before based on how
>the car sounds, but I get their quicker because of the lightened flywheel.
>At highway speeds, fourth gear is about the same rpms as before. (But I
>definitely notice a difference when I hit the OD switch; then it's an
>immediate drop of about 500 rpm. LOVE it!!)
>
>AI told me they often have to cannibalize other units to put together a
>complete OD/trans because the yard workers who remove these things from the
>saloons aren't gentle with caste aluminum. I also installed the TRF HD
>clutch, throw-out bearing, fork, lever, bushings and a new slave cylinder.
>All of these parts were strictly bolt-in and the bell-housing and speedo
>angle drive matched up perfectly. Sitting next to my non-OD tranny in the
>garage, the units looked identical except for the OD, of course, and one
>other very important difference: the rear of the OD unit had been machined
>in order to mate up with the rear engine/tranny mount or miss the frame--I
>forget which.
>
>These are just my impressions; I'm sure someone else can give you actual
>specs.
>
>Good luck!
>
>Ian
>CF57345U +O
>
>
>----------
>>From: "econrad" <econrad@teal.csn.net>
>>To: "'Triumphs'" <triumphs@autox.team.net>
>>Subject: 2000 / 2500 Transmissions vs. TR6 Transmission
>>Date: Thu, Jun 15, 2000, 2:15 PM
>>
>
>>
>>List,
>>I'm curious what mechanical differences there are between a transmission for
>>a Triumph 2000 or 2500 and that of a '76 TR6. Are there differences in gear
>>ratios, clutch, clutch fork throw, slave cylinder, .....? I'm not sure of
>>all the questions to ask, so please enlighten me.
>>
>>Also, if there is a gear ratio difference, how would this affect the TR6's
>>drivability?
>>
>>Thank you,
>>Eric Conrad
>>Denver, CO
>>econrad@teal.csn.net
>>
>
|