Hi Joe,
I have looked at this. Super charging will give a positive manifold
pressure. As you know, the metering unit senses the manifold vacuum to
adjust fuel delivery. The problem is the metering unit has no control over
fuel delivery for a positive vacuum (i.e. the richest it is designed to go
is 1 atmos).
However...
This problem can be overcome by using EFI. A friend of mine has a ford
capri with 2 litre cortina motor. First off he converted it to EFI running
an MR2 supercharger. About two months ago he got this turbo working in
parallel with the supercharger. Needless to say the results are good. I
just wish he would do something about the brakes....
The one thing that would concern me is how well the bottem end of the 2500
motor would take the extra load. I would be interested to hear from the
likes of Dick Taylor and others as to the longevity they get out of their
motors producing high hp. I understood the practical Hp limit of this motor
was around 200 hp and after that, the time between rebuilds gets
significantly closer.
Hope this is helpful.
Cheers
Bernard
'71 2500 PI
'73 TR6 PI
At 22:09 10/04/2001 +1000, Santamaria, Joseph (Joseph) wrote:
>Re - all the mails on superchargers.
>
>This may be a stupid question and simply impossible but has anyone ever
>tried supercharging with the standard 2.5 lite Lucas Injection setup.
>Obviously you would have some fun with the mixture metering but after
>thats sorted it would seem perfect. ie no maifold vacuum required for
>fuel delivery as fuel is pressure forced and relatively simple plumbing
>to get forced air to throttle bodies.
>
>just wondering!
>
>Joe Santamaria
>
>1976 Stag
>1971 2500 PI Saloon
>
>Team Leader - Call Centre Design and Implementation Specialist Group
>E-Communications Design and Implementation
>Avaya Australia Pty Ltd
>
>*Tel: +61 2 93529287
>*Fax: +61 2 93529287
>* mailto:jsantamaria@avaya.com
>
>
>
>
>
>-----Original Message-----
>From: Brian Borgstede [mailto:borgstede@umsl.edu]
>Sent: Saturday, 7 April 2001 1:16
>To: 6pack@autox.team.net
>Subject: Re: Superchargers for TR6
>
>
>That carb is also used as an upgrade on turbo Corvairs!
>
>>From: tr6taylor@webtv.net (Sally or Dick Taylor)
>
>>To all that might still be interested in this. The carb of choice for
>>forced induction TR's seems to be the SU HD8, not only for its larger
>>size (2") but because they're easy to work on and needles of various
>>profiles are available, should you want to dabble.
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>Brian Borgstede !
>Distance Learning Engineer !
>University of Missouri - St. Louis ! '68 Triumph TR-250
>Phone: (314)516-6433 ! (or two or more)
>Fax: (314)516-5294 !
>Email: borgstede@umsl.edu !
>
>
Regards
Bernard Robbins
NEC New Zealand Ltd
Network Solutions
P.O. Box 1936
Wellington
Ph (04) 381 6274
fax (04) 381 6284
email brobbins@wlg.nec.co.nz
http://www.nec.co.nz
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