Re: Mono liners was Monosleeve liners & / or Monoblock liners

[bearbvd@domain.elided (Greg Hermann)]

He certainly shouldn't mind !! I, for one, _do_ have a fair degree of
serious engineering and machine design knowlege. If I ever get "around to"
building another serious Alfa (would either be a 101 Sprint or Spider or a
TZ (given a lot of luck)), I will most certainly be in touch with Mr.
Beninca.

It sounds to me as though his block has dealt with all of the issues I have
always felt were weaknesses in the stock Alfa blocks !!

All that is needed now would be Bore Tech hardening of the mono-sleeve
bores and a head with pressure oil to the cam follower bores !! :-)

I would also be _quite_ curious to hear what Mr. Beninca has been using in
the way of trannies and rear ends in order to deal with the sort of output
he is claiming!

Regards,

Greg

At 3:44 PM 10/26/01, AlfaCyberSite wrote:
>Don't believe Joseph Beninca (of Australia) would mind my including the
>following (July of this year) exchange of emails. I've put Joseph's
>comments in quotes.
>
>My personal feeling is if someone was seriously campaigning an Alfa with
>a 2 liter engine, this would be relatively cheap insurance for helping
>hold the block together.
>
>I don't remotely pretend to have any real engineering knowledge, but a
>friend who vintage races 2002 BMW's feels the reason he can almost
>always beat the Alfas is because the cast iron block on the BMW is
>stronger and can therefore take more punishment / major tweakingnot to
>mention it 'moves around' less.
>
>Biba
>Irwindale, CA USA
>
>***********
>www.beninca.com.au
>Joseph Beninca
>B Mech E (Melb) AM SAE A
>581 Canterbury Rd
>Surrey Hills
>Victoria 3127
>
>Hello Biba
>
>"I sell as a complete package.
>Alfetta block prepared with oil squirters and No 2 & 4 main bearings
>with oil supply.
>Mono sleeves bored with strain plate to 84mm and the deck height set to
>standard with a "bit" groove.
>The barrels can be later bored to 86mm+.
>I have run up to 700HP with a turbo.
>Cost $3500 Australian excluding duty, taxes and freight.
>1 American dollar buys 2 Aussie dollars."
>
>Thank you
>J Beninca
>
> ************
>
>Joe, thanks for getting back to me. While I have no immediate plans for
>building up a very special Alfa engine, I do appreciate having the
>information.
>
>An associate and I have contemplated re-building Series 1, 2 & 3 Alfa
>spiders to make them somewhat to a lot more powerful, safer, and which
>comply with California's smog laws.
>
>As I recall, Autodelta had special castings made for siamesed sleeves.
>Although, as I think about it, how could they then be machined-or did
>they
>do what you have accomplished, but in your case with all four sleeves?
>"Mine are NC machined as a figure "8" and complement in block."
>
>Perhaps it would be overkill, but it seems to me the mono sleeves would
>add some to a lot of integrity to the block. I assume  you agree?
>"A large increase."
>
>Does the drilling of the welds between the sleeves allow for sufficient
>water flow? I'm thinking more of a 170 hp or so engine sitting in
>traffic on a very hot day, rather than a 700 hp (?) engine at speed.
>"They are a complete casting and I have made 700HP.
>No problem with cooling and the ring sealing wear pattern is terrific."
>
>Please explain the 'bit' groove. Is this a grove around the outer
>circumference to accommodate a copper (or?) ring to help seal the
>individual cylinders?
>"Its a groove where the headgasket "falls" into so that it will not
>slide sideways."
>
>Must admit I have never been a fan of turbocharging-lag, heat, and
>(sorry) they're ugly.
>
>Don't suppose your firm has come up with a 'nice' (and reliable)
>supercharger system for the Alfa 4-cylinder? My opinion is for
>day-to-day driving, the engine needs more poop down low, without giving
>much away
>at mid and top ranges. Peaky engines are fun...for about a week.
>
>Can I assume you could supply a Spider block for the same amount?
>"Australia does not have Spyders after 1976 except for imports so
>obtaining a specific spyder block will not be possible. Either you send
>one or I supply an Alfetta 1979>86 block."
>
>
>Thank you
>J Beninca
>
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