put a nissan 5 speed in it.
Ira Erbs
1959 100-6
MKI engine and disc brakes
excuse typos and strange words my phone wants you to see.
Portland,OR
On Aug 9, 2017 5:10 PM, "Michael MacLean" <rrengineer.mike at att.net> wrote:
> I got the idea from Russ that it would be more positive, not very
> extreme. Just not what you are used to with the sleeve. Of course you
> can't take my word for it. I have no reference point as this BN2 is my
> first big Healey. Sure wish my Bugeye had overdrive. Wow! What mileage I
> could get out it then!
> Mike MacLean
>
>
> On Wednesday, August 9, 2017 12:30 PM, Bob Spidell <bspidell at comcast.net>
> wrote:
>
>
> Good info! Just how much harsher is engagement with the larger
> accumulator? As one who always tries to shift as smoothly as
> possible--without slipping the clutch much, if any--is engagement so harsh
> as to require a slip of the clutch which, of course, will contribute to
> clutch wear? If clutch isn't used, is engagement so harsh as to be a
> 'shock' to the drivetrain; i.e. U-joints, splines, differential gears?
> Bob
>
> On 8/9/2017 5:58 AM, Ed O'Neal wrote:
>
> Mike,
>
> The original OD design used a 1 ?? accumulator piston with a concentric
> double spring. This configuration was used in a lot of different vehicles
> including the Triumphs. Donald Healey didn?t like how the OD engaged
> harshly when the clutch was not used during the shift. He changed the
> design to incorporate a sleeve fitted in the 1 ?? bore with a smaller 1
> 1/8? accumulator piston inside of the sleeve and a single spring. This
> gave a slower engagement much like a modern automatic transmission.
> However, as the OD wears the internal leakage increases and the OD will
> engage very slowly or not at all. Using the larger accumulator is a good
> idea (in my opinion) and will delay the point when internal leakage causes
> a problem.
>
> Ed
>
> 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
>
>
> *From:* Healeys [mailto:healeys-bounces at autox.team.net
> <healeys-bounces at autox.team.net>] *On Behalf Of *Michael MacLean
> *Sent:* Tuesday, August 08, 2017 8:47 PM
> *To:* Healey List
> *Subject:* [Healeys] Russ Thompson
>
> Through a reference from the list I am having Russ Thompson in
> Northridge, California rebuild my BN2 transmission. It is a low mileage
> (10,000 mi. approx) transmission, but I wanted to be able to put it in and
> not have to take it back out again. Good thing I took this precaution.
> Russ found the overdrive stuck and would never have worked. Today he
> showed me the accumulator piston. The smaller center piston was scored
> from dirt or crap in the oil. Russ replaced it with a one piece piston
> from a Triumph overdrive. There was a huge spring below it. Anyone heard
> of this? He said engagement will be real positive now. Even with the low
> mileage, the number 2 synchro was toast and will be replaced. The other
> two were fine and will be re-used. All the gears showed very little sign
> of wear. The reverse gear had some surface rust on the teeth, but that can
> be blasted and it will be fine. Getting closer to having the drive train
> is the car.
> I know I am going to start a discussion, but Russ recommends using
> 40wt motor oil for the transmission. Anyone know what weight Redline MTL
> is?
> Mike MacLean
>
>
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