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Austinsevenfriends
Alternative engines - what's been tried? - Printable Version

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Alternative engines - what's been tried? - DavidL - 19-03-2018

What engine conversions have been a "success"?   

The context of that success is of interest as well.  For example a Ford sidevalve is no longer something you'd find stacked in the corner of the local scrap yard, its not a budget option any more.   The Climax engine tempts these days with all those fire pumps on ebay, and while it might not be the same engine you'd find in a Lotus its going to pull a bitza along nicely.  Reliants, side and ohv get mentioned.  I've heard of a Riley 9 in an Austin which is a bit exotic.  What else does or has "made sense" over the years?

RE: Alternative engines - what's been tried? - Ruairidh Dunford - 19-03-2018

I have worked on Austin Sevens with the following engines in:

A-Series

Reliant (OHV and S/V)

Riley Nine

JAP

I have 'seen' the following used,

BAC

Cov. Climax

Big Seven

Cleone

I will probably remember more in the middle of the night!

RE: Alternative engines - what's been tried? - Mike Costigan - 19-03-2018

I believe VAT 69 has a flat-twin ABC aero engine in it.

RE: Alternative engines - what's been tried? - merlinart - 19-03-2018

(19-03-2018, 07:23 PM)Ruairidh Dunford Wrote: I have worked on Austin Sevens with the following engines in:

A-Series

Reliant (OHV and S/V)

Riley Nine

JAP

I have 'seen' the following used,

BAC

Cov. Climax

Big Seven

Cleone

I will probably remember more in the middle of the night!

The fire pump Coventry Climax engines are these the FWM 654cc engines?

A Series, that would be good. Not having looked at one for yonks, would the sump need modifying much the same as on a Reliant 850? I've already trimmed a new Reliant sump.

Dare I suggest a Honda CX500 V twin? 40bhp from 48kg including gearbox, though output shaft 100mm offset to the right as one looks at from the rear. A four valve per cyl little screamer! Not been tried to my knowledge?

Arthur
(19-03-2018, 08:24 PM)merlinart Wrote:
(19-03-2018, 07:23 PM)Ruairidh Dunford Wrote: I have worked on Austin Sevens with the following engines in:

A-Series

Reliant (OHV and S/V)

Riley Nine

JAP

I have 'seen' the following used,

BAC

Cov. Climax

Big Seven

Cleone

I will probably remember more in the middle of the night!

The fire pump Coventry Climax engines are these the FWM 654cc engines?

A Series, that would be good. Not having looked at one for yonks, would the sump need modifying much the same as on a Reliant 850? I've already trimmed a new Reliant sump.

Dare I suggest a Honda CX500 V twin? 40bhp from 48kg including gearbox, though output shaft 100mm offset to the right as one looks at from the rear. A four valve per cyl little screamer! Not been tried to my knowledge?

Arthur
Should have said 50bhp from 48kg.

Arthur

RE: Alternative engines - what's been tried? - Alan - 19-03-2018

Can add Ford 1172 and Model A, and have heard of, but not seen Harley Davidson SV,

I can’t help feeling that you need to stay in context with a period engine. Nothing against modern engines but I think I’d want to put it in a more up to date chassis.

RE: Alternative engines - what's been tried? - Ruairidh Dunford - 19-03-2018

The vintage engine variants hold much more appeal to me personally, some wonderfully inventive builds of this ilk exist for inspiration.

RE: Alternative engines - what's been tried? - Alan - 19-03-2018

You could always use a Ruby engine. No, not one of those, a French 1100cc sort. I believe it’s already been done.
Actually I quite fancy that idea. Imagine getting an Austin Ruby into the VSCC. Steve Jones, be prepared!!!

RE: Alternative engines - what's been tried? - Mike Costigan - 19-03-2018

There's a Ruby chassis on eBay at the moment with a 3-cylinder Suzuki engine installation!

RE: Alternative engines - what's been tried? - Ritchie Wilson - 19-03-2018

I bought a MkI Ruby with a 660cc Subaru Vivio (or Ace) engine in it complete with a crank-handle installation. The ship's engineer who did this was attracted to the little engine because it was a development of the A7 engine - with, perhaps, the same cylinder spacing. I have not been able to confirm this.

RE: Alternative engines - what's been tried? - DavidL - 19-03-2018

Reliant OHV: https://www.ebay.co.uk/itm/Austin-7-box-saloon-1934-highly-modified-built-for-classic-trials-reliant-engine/362273158530?hash=item545929b582:g:XGsAAOSwho1artS2
Cleone: https://www.youtube.com/watch?v=ZnqU6536SEE
A series: https://www.pinterest.co.uk/pin/363665738641954342/ and https://www.pinterest.co.uk/pin/315040936414755887/
On the old forum I can remember a special build with what I think was a honda V twin...think he took it to the Shakespeare Raceway...
Blackburn triple: http://www.flickriver.com/photos/austin7nut/4290125289/
I used to see this one at Wiscombe Park, FIAT: https://www.pinterest.co.uk/pin/148407750205335201/ Did /does it have a chain drive from the back of the gearbox to the front of the offset axle?