Speaking of alternator conversions...
HAs anyone had experience converting the alternator on a spitfire? No info
for spits on the vtr site.
I'd be grateful for advice on this!
>At 04:17 PM 1/13/98 -0500, you wrote:
>>Hi All...
>>
>> Anybody know about anyone attempting to install Holley Pro-Jection
>>or similar after market fuel injection system on TR6 or TR5/250? I'm just
>>curious. In theory, bit of engineering will make those things fit on most
>>6 cylinder applications. Any thoughts?
>>
>> Jon Lim
>>
>Jon,
>
>We've installed the Pro-Jection unit onto a TR-6 and it can be a good way to
>go if your building a car with the intention of driving it year-round.
>Performance wise it is marginally better than stock, is much easier
>starting, slightly more economical on fuel consumption, and not prone to
>being upset by climbing steep grades or during hard cornering. The major
>advantage to fitting fuel injection is that the system is not dependent on
>engine vaccuum to function. Therefore, you can run a cam with more overlap
>without sacrificing your idle speed.
>
>That said, you would be better off to approach the idea of adding TBI
>slightly differently. The ECM or "brain" that comes with the Pro-Jection
>unit does not have enough adjustability built in to give good idle and high
>speed running at the same time. We solved this problem by using another
>injector driver from Electromotive in Arlington, VA, and scraping the Holley
>box. However, Holley is now offering a Pro-Jection that uses a laptop
>interface for tuning much like that available from Electromotive,
>unfortunately, the new system from Holley is only available in a
>four-injector unit which is too big for your TR. I'd suggest getting a
>stock throttle body from the scrapyard (Automotive Recycling Center to be
>pollitically correct, although alot of times the stuff you bring home from
>there is still scrap ;] ), that way, you'll also get the idle air control
>circuit which is not present in the Pro-Jection casting. Add Haltech,
>Electromotive, or other programmable electronics of choice and go from there.
>
>I've got the details on fabricating the intake manifold if you want,
>although you will need TIG welding capability to do the job. (Have
>dimensions and photos, can send you a scan if you wish.) On the exhaust
>side, you'll need to install a fitting in the downpipe to accept an oxygen
>sensor if you really want to get the most out of the system. You will also
>need to mount a high-pressure fuel pump near the tank and run the suitable
>wiring, relays and inertia switch for safety concerns, as well as plumbing
>for a fuel return line to the tank. (Must be steel tubing - don't use the
>plastic vapor lines for a fuel return.) Additionally, as a note of caution,
>do not mount a Monza style exhaust as the pipes will be very close to the
>high-pressure pump which will curtail your new-found reliability by cooking
>it to death every few thousand miles. And be sure your alternator can
>handle the extra load of the injectors, electronics, and fuel pump. We
>installed a GM alternator along with the set up. Alternator conversions
>have been widely discussed on the list as well as on the VTR home page. The
>one we use is a 98 amp unit which is dimensionally the same as the 63 amp
>unit more commonly used in the conversion. (Necessary if you wish to run an
>electric fan, mega-watt stereo, and aux. driving lights.)
>
>Don't let this scare you, it really isn't that hard to do it, it just isn't
>a bolt-on weekend project as the Pro-Jection propaganda sheet implies.
>
>Good luck!
>
>Regards,
>
>Brian Schlorff '64 TR-4 '71 TR-6 '72 TR-6 '79 Spit
>---------------------------------------------------------------------
> Power British Check out Power British
> 371 E. Main St. on the 'Net!
>Norristown, PA 19401
> (610) 270-0505 www.powerbritish.com/~britcars
>---------------------------------------------------------------------
>
Will
___________________________________________________________
Will O'Brien
OS Design & Consulting
email: hobrien@webos1.com
alt email: will@students.missouri.edu
___________________________________________________________
|