I will reverse the question & suggest the advantages of retaining the original
transmission & overdrive.
The shift lever is located exactly where the factory intended it to be. No
modification to the tunnel & center console required.
The rear mounts all line up - no modifications & adapters required.
The speedometer cable does not require any modifications or adapters.
The engine back plate fits the bell housing without modification.
You have 6 speeds forward. 1, 2, 3, 3rd overdrive, 4th & 4th overdrive.
No need to purchase a used Toyota 5 speed & worry about it's condition. Or pay
to have it inspected & rebuilt
No satisfaction in learning the art of double clutching. I love double
clutching down into lower gears including 1st gear - very satisfying! I am
easily satisfied.
The original pressure plate, clutch plate, slave cylinder & clutch hydraulic
line all fit without any re-engineering.
Your car will be more original & if you care perhaps worth more.
I am not saying you will experience all of these if you choose a Toyota, but it
does give you a few things to consider.
My personal favorite reason: I heard a woman say "It makes me tingle when he
flips the overdrive in & out of gear".
Does your Toyota do that?
Seriously, anyone can shift gears, but knowing how & when to engage or
disengage the OD is one of Healying's little pleasures.
If your 50+ year old transmission & overdrive are causing you some type of
issue(s) & you are not intimately familiar with rebuilding them you should
consider having them professionally rebuild. When done correctly they perform
well & should not leak (much). Generally, finding someone that truly knows what
they are doing & is meticulous in their work is the challenge.
Please add to the list if you know of other reasons to keep the original drive
train.
Gary Hodson
-----Original Message-----
From: John O'Brien <banjojohn at cox.net>
To: Ed O'Neal <Ed at wadsworthoneal.com>; healeys <healeys at autox.team.net>
Sent: Sat, Jul 1, 2017 8:55 am
Subject: Re: [Healeys] Toyota 5 speed love
I've seen threads on the Toyota 5 speed conversion, and looked through the
archives a bit. My BJ8 has the original trans. with the overdrive which
all works as it is supposed to. What is the advantage to converting to
the Toyota 5 speed over using the factory setup?
John O'Brien
'61 bugeye "Lucy"
"65 BJ8 P1 "Madelyn"
On 6/30/2017 10:21 AM, Ed O'Neal wrote:
Gents,
I?m going to do the Toyota 5 speed conversion on my 1960 BT7.
Apparently, I will need a BJ8 flywheel. Can the old BT7
flywheel be successfully re-machined to accept the BJ8 clutch plate?
If so are there any instructions for this modification?
Ed O?Neal
ed at wadsworthoneal.com
Edward J. O?Neal, P.E., Pte.
Wadsworth O?Neal Associates, Inc.
6418 Commerce Park Drive
Fort Myers, Florida 33966
phone: (239) 245-8728
cell: (239) 410-6174
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