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Hi Mayf,<br>
Lookup Speeduino. Arduino Mega can do it.<br>
I was working on that for a GM 2bbl TBI a few years ago.. and got
distracted.<br>
I may be able to get re-invigorated if someone else is working on
it...<br>
Gary<br>
<br>
<br>
<div class="moz-cite-prefix">On 7/17/2021 11:58 AM, Larry Mayfield
via Tigers wrote:<br>
</div>
<blockquote type="cite"
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<p class="MsoNormal">Theo, interesting points you make. And I
have not heard Megasquirt is a long while! Why not consider a
Raspberry Pi 3 B+ ? Certainly enough brainpower. An arduino
might work also and it could handle it as well. While I was
thinking of a carb setup type of FI, a SEFI might be just as
good if implemented correctly. Or even a large throttle bore
with direct injection. Think I will look around and see if
anyone has made a DIY EFI system using any of this stuff. <o:p></o:p></p>
<p class="MsoNormal">Thanks for reminding me… <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Mayf<o:p></o:p></p>
<p class="MsoNormal">TWFS<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Theo Smit
<a class="moz-txt-link-rfc2396E" href="mailto:tsmit@shaw.ca"><tsmit@shaw.ca></a> <br>
<b>Sent:</b> Friday, July 16, 2021 7:28 PM<br>
<b>To:</b> Will Seay <a class="moz-txt-link-rfc2396E" href="mailto:Tigers@embarqmail.com"><Tigers@embarqmail.com></a><br>
<b>Cc:</b> Larry Mayfield <a class="moz-txt-link-rfc2396E" href="mailto:drmayf@mayfco.com"><drmayf@mayfco.com></a>;
tigers <a class="moz-txt-link-rfc2396E" href="mailto:TIGERS@autox.team.net"><TIGERS@autox.team.net></a><br>
<b>Subject:</b> Re: [Tigers] Tiger eplacement carb and
alternator Questions<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Will
and Mayf,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">I
ran my Tiger with a BossEFI 4-barrel throttle body
injection system for about six or seven years. This is
the system that got acquired (or at least rebranded and
marketed) by Professional Products.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">The
version I had, still had the ECU separately mounted in
the passenger compartment; later versions had the
electronics all integrated in the throttle body
assembly. This simplifies the wiring but subjects the
electronics to the under-hood heat, which is maybe not a
great idea.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">When
I bought my crate motor, it came with a carb and so far
I have not put the BossEFI back on yet. The programming
interface for the BossEFI system was ... not great. It
came with a number of pre-built maps, but it was not
easy to tweak in a logical way, and especially its
integration of air/fuel ratio feedback and timing
control was just weird. The car ran fine at WOT but the
part throttle operation was not easy to get right. This
is partially because the Tiger will run all day at
really small throttle openings, and so you're always
tuning just a hair off the idle settings. I'm not sure
if a throttle body that had the injectors below the
throttle plates would be better in that regard.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">If
/ when I get time to go back to playing with that setup
again, I may look at using a third party EFI controller
(such as Megasquirt, if they are still making stuff that
can be adapted to any generic injector), rather than
going back to 2003 era user interface and controls.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">To
set the car up for the EFI system, I took many of the
same steps that Will did. I plumbed a 3/8 inch feed and
return line from the back of the car to the firewall and
mounted a regulator on the firewall. I initially used a
high volume canister filter as a sort of surge can, but
currently I have the (stock) feed from the tank running
about 12 inches forward, to a low pressure pre-filter.
Then the return line is teed in, and we go to the fuel
pump and then the high-pressure post filter. Those three
pieces are all mounted under the trunk, behind the
Alpine spare tire well.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">I'm
running a Denso 70 amp alternator that is small enough
to tuck ahead of the right cylinder head, still
preserving the stock fan belt line. I also have a Plex
wideband O2 sensor mounted in the right header
collector.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">To
convert back to the carburetor, I just swapped the 45
PSI regulator out for one that would not flood the
Holley carb's needle/seat. The (high pressure) fuel pump
just ends up circulating the fuel through the return
line, if there is any excess volume.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Cheers,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Theo<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div class="MsoNormal" style="text-align:center"
align="center"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
<hr id="zwchr" width="100%" size="2" align="center"></span></div>
<div>
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">From:
</span></b><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">"tigers"
<<a href="mailto:tigers@autox.team.net"
moz-do-not-send="true">tigers@autox.team.net</a>><br>
<b>To: </b>"Larry Mayfield" <<a
href="mailto:drmayf@mayfco.com" moz-do-not-send="true">drmayf@mayfco.com</a>><br>
<b>Cc: </b>"tigers" <<a
href="mailto:TIGERS@autox.team.net"
moz-do-not-send="true">TIGERS@autox.team.net</a>><br>
<b>Sent: </b>Friday, July 16, 2021 3:38:16 PM<br>
<b>Subject: </b>Re: [Tigers] Tiger eplacement carb and
alternator Questions<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Mayf,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">I
got the EFI bug some time ago when I saw a series of
Hagerty Youtube videos in which a Fairlane (5-bolt)
289 was rebuilt to a 289 HiPO-ish state and then put
it in Brad Phillips Tiger. The plan was to do the
engine swap and get the engine going with a Holley
4BBL setup and then switch the 4BBL for a Holley
Sniper EFI throttle-body unit. Brad got his Tiger
going with the 4BBL setup but, to my knowledge,
never did the Sniper install. Brad's engine swap
was recorded in a series of 12 Youtube videos. Here
are some links:<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Here's
the first episode of Brad Phillips 289 engine
swap: <a
href="https://www.youtube.com/watch?v=CzWYRPH24Bw&list=WL&index=2&t=26s"
target="_blank" moz-do-not-send="true">https://www.youtube.com/watch?v=CzWYRPH24Bw&list=WL&index=2&t=26s</a><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Here's
the Hagerty time-lapse video of the engine rebuild:
<a
href="https://www.youtube.com/watch?v=tVtrnxx3rTE&t=0s"
target="_blank" moz-do-not-send="true">https://www.youtube.com/watch?v=tVtrnxx3rTE&t=0s</a><br
clear="all">
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">There
is a Youtube video of a dyno test of the engine with
and without EFI. So far I haven't found a link to
it.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">I
have been making plans to make my car "EFI-ready".
That is, I want to have a plan for each aspect of
the conversion. Current plan is to replace the OEM
fuel pump with the high pressure pump and to house
pump and pre and post filters in the same area as
previously housed the OEM pump. I have made up a
heat shield for the right-side muffler to keep from
roasting the pump. Fuel return line will go into
the top of the right fuel tank. I can provide
pictures of the return line fittings if you are
interested. I will be doing my own harness. The
Holley harness is bass ackwards for a Tiger,
assuming battery up front. Fuel relay and fuses for
fuel pump and EFI will be located with the pump.
Anticipating that the fuel pump and injectors will
want to suck more current than the OEM generator can
provide, I have done an alternator conversion. I
already have a wide band O2 sensor installed for a
PLX O2 readout so the O2 sensor is already there.
Control of distributor advance is optional with the
Sniper so I don't plan to do opt for that
initially. Someday I would like to add it though.
Should improve driveability and maybe performance.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Like
I said, I want to make the car "EFI-ready" . Don't
know if I will actually do the conversion, but I
want to at least have it thought out so that I can
get there from here if I decide to.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Will
- 382001570 <br>
<a href="mailto:Tigers@embarqmail.com"
target="_blank" moz-do-not-send="true">Tigers@embarqmail.com</a><o:p></o:p></span></p>
</div>
</div>
</div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">On
Fri, Jul 16, 2021 at 9:46 AM Larry Mayfield via
Tigers <<a href="mailto:tigers@autox.team.net"
target="_blank" moz-do-not-send="true">tigers@autox.team.net</a>>
wrote:<o:p></o:p></span></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC
1.0pt;padding:0in 0in 0in
6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<div>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">I
have owned my Tiger since Jan 1967, bought it
used. Has been sitting quietly now for quite a
number of years. And I want to drive it a bit
more now. But carbs are so old fashioned, lol.
So, seeking information from the groups
experiences, those owners who have replaced the
carb with an electronic injected version: either
2 bbl or f bbl versions. If 2 bbl then I would
just use the cast iron intake manifold. If 4 bbl
I need to know which is best for a bone stock
260 cid which so far in my ownership has never
been apart. I tend to lean toward a 4 bbl
version as I have a 5 bolt 289 with some
performance capability and I would need to buy a
manifold for that. I also have my 260 LSR motor
which has the full treatment and is a real race
motor. So, seeking real world experience on
what and which brands are most user friendly
while putting out power for driving around,
having some fun (again). <o:p></o:p></span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Larry,
mayf, drmayf etc<o:p></o:p></span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">_______________________________________________<br>
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<o:p></o:p></span></p>
</blockquote>
</div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><br>
_______________________________________________<br>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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