Alan:
As far as I can tell from the literature that I have, the change to the
diaphragm clutch was made late in the BJ7 production and ran right to the end
of BJ8 production - with the corresponding change to the flywheel drillings.
They did fiddle around with a couple of sizes of disc - 9 1/2", 9" - today's
replacements seem to measure up at around 9 1/4".
In any case, the problem for Ira remains the same: the flywheel will have to
be re-dowelled, and the flywheel bolt holes will have to be enlarged because
of the configuration of the diaphragm (BJ8) clutch - no big problem for any
competent machine shop.
It's a change that is well worth it in my opinion - I did it to my tri-carb
many years ago (although I used a BJ8 flywheel lightened by Bill Bolton,
rather than reconfiguring the original). It's simply a much better clutch.
Cheers, --- Earl
----- Original Message -----
From: Alan Seigrist
To: Earl Kagna
Cc: I Erbs ; Healey List
Sent: Wednesday, May 19, 2010 7:41 PM
Subject: Re: [Healeys] template for BJ8 clutch
I actually am confused here because I think the early BJ8 and / or BJ7
clutch uses 2 pegs with the same bolt pattern as the later BJ8.
Alan
On Thu, May 20, 2010 at 10:28 AM, Earl Kagna <kags@shaw.ca> wrote:
Alan / Ira:
Sorry to disagree - the BJ8 clutch uses a larger mounting bolt than the
earlier one, and 3 dowels instead of 2. The fix is the same - take the
flywheel and the clutch cover to a good machine shop - they'll figure it
out
for you.
Done this a few times.
Earl Kagna
Victoria, B.C.
BT7 tri-carb
BJ8
----- Original Message -----
From: "Alan Seigrist" <healey.nut@gmail.com>
To: "I Erbs" <eyera3@gmail.com>; "healey help" <healeys@autox.team.net>
Sent: Wednesday, May 19, 2010 3:19 PM
Subject: Re: [Healeys] template for BJ8 clutch
The bolt holes will be the same, only the pegs are different.
Just purchase the BJ8 clutch cover and take it to your Machine shop
and let them balance and do the peg work.
No need for a template....
On 5/20/10, I Erbs <eyera3@gmail.com> wrote:
> Hello all,
> I checked the archives, but could not locate any info:
>
> I will be converting my BT7 heavy duty clutch to the softer BJ8 setup.
I'm
> looking for a template for relocating the pins/bolt holes on the BT7
> flywheel. It is a lightened wheel, so I do not want to swap it out for
a
> BJ
> 8
> Thanks.
> If you have done this before, please reply with cautions and
encouragement
> :)
>
>
> --
> I Erbs
> Portland, OR
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