[Healeys] Mating a 6 cyl transmission to a BN1

[Perry Small]

Richard
At first I thought the Smitty plate might have extra holes drilled or slotted holes to accommodate both engines. Just overlaid the 100 back plate on the six cylinder back plate and that quickly showed that one plate fits all was not an option. 
Perry

Sent from my iPhone

> On Feb 22, 2022, at 1:22 PM, Ricchardd Mayor <boyracer466 at gmail.com> wrote:
> 
> What I don’t understand is how the Smitty/Healey 5 speed conversion (bell housing) is advertised to bolt up to a 100/4, 100/6 and 3000.  But I’m now told told you need a special 100/4 engine plate to make it work.   What’s the story?
>  
> Richard Mayor
> Portland, Oregon
> boyracer466 at gmail.com
> 
> 
> 
> 
> 
>>> On Feb 22, 2022, at 7:38 AM, warthodson at aol.com wrote:
>>> 
>>> Yes, but the challenge is determining determining where to drill (machine) the holes so that the transmission input shaft is correctly aligned with the pilot bushing with out pre-loading the pilot bushing. That is why the factory provided 2 special alignment bolts (dowel bolts), but they are not at the same location on the 100 engine backplate & the 6 Cyl. backplate
>>> Gary Hodson
>>> 
>>> -----Original Message-----
>>> From: Ricchardd Mayor <boyracer466 at gmail.com>
>>> To: warthodson at aol.com
>>> Cc: healeys at autox.team.net <healeys at autox.team.net>; healey.nut at gmail.com <healey.nut at gmail.com>
>>> Sent: Mon, Feb 21, 2022 8:54 pm
>>> Subject: Re: [Healeys] Mating a 6 cyl transmission to a BN1
>>> 
>>> I see that DW and AH Spares sell aluminum back plates to do the conversion.  Can’t a 6 cylinder back plate be modified to work? 
>>> 
>>> 
>>> Richard Mayor
>>> Portland, Oregon
>>> boyracer466 at gmail.com
>>> 
>>> 
>>> 
>>> 
>>> 
>>> On Feb 21, 2022, at 2:43 PM, warthodson--- via Healeys <healeys at autox.team.net> wrote:
>>> 
>>> I think you will require an engine back plate that fits the 6 cyl bellhousing & is drilled to fit the 4 cyl engine. I believe Dennis Welch sells them. The thickness of the back plate will affect how much the Trans. input shaft has to be shortened. 
>>> Gary Hodson
>>> 
>>> -----Original Message-----
>>> From: Ricchardd Mayor via Healeys <healeys at autox.team.net>
>>> To: Alan Seigrist <healey.nut at gmail.com>
>>> Cc: Healeys <healeys at autox.team.net>
>>> Sent: Mon, Feb 21, 2022 3:28 pm
>>> Subject: Re: [Healeys] Mating a 6 cyl transmission to a BN1
>>> 
>>> A BN2 bell housing will not give me a hydraulic clutch.
>>> 
>>> Richard Mayor
>>> Portland, Oregon
>>> boyracer466 at gmail.com
>>> 
>>> 
>>> 
>>> 
>>> 
>> 
> 
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