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Re: [Healeys] DW overdrive piston

To: healeys@autox.team.net
Subject: Re: [Healeys] DW overdrive piston
From: Bob Spidell <bspidell@comcast.net>
Date: Wed, 3 Aug 2022 06:01:13 -0700
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <CADigPhTTcV5CYRbZSviaOm9w=rvdHQyUbfp9PMK+nTWD8BofuQ@mail.gmail.com>
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0
I put one in my BJ8's O/D. It's subjective*--O/Ds seem to work a little 
quicker with cold, thick oil than hot oil--but it cuts maybe a third off 
engagement time on average. I had the O/D on the bench and disassembled, 
and the current one had a scored barrel so, why not? Engagement isn't 
much, if any, harsher than before which, I believe is the reason DMH 
wanted the weaker, smaller spring. If I'd known about it, I might have 
bought AHSpares' with an O-ring instead.

* I've never really 'timed' O/D functioning, it would be a bit awkward; 
anyone done it? I usually tap the clutch pedal when engaging O/D, and 
give a little throttle when disengaging. I thought mine engaged a little 
quicker when I switched to synthetic fluid from engine oil, but in all 
cases confirmation bias may be involved.



On 8/2/2022 8:09 PM, Joseph Costa wrote:
> Has anyone installed their upgraded overdrive piston?  If so, is it 
> worth the trouble ?
>
> Joe
> BN1 #923
>

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