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I don't have any heads, but I'll bet someone on the FOT list knows where t=
here is one.
Jack
On Tuesday, November 5, 2019, 11:16:21 AM EST, Alan Berry <alanb@alanbe=
rrydesign.com> wrote: =20
=20
Need a TR4 head for my race car. Any thoughts?
Thanks,=C2=A0
Alan #41 TR4A
On Tue, Nov 5, 2019, 7:57 AM Jack Wheeler via Fot <fot@autox.team.net> wrot=
e:
I've been going through my shop, getting rid of many things for which I wil=
l have no need in the future.
By the mid-80's, when I was racing the TR-4 in SCCA, I was using a crank tr=
igger for my primary ignition system.=C2=A0 I also tried to have a reliable=
back-up, which up until then had been a stock distributor with Lucas Point=
s.=C2=A0 But, of course, I never adjusted the points, so when I needed the =
back-up one time, the car wouldn't run right on the stock distributor.
Shortly after that, I was on the phone one night talking with Paul Trapp, w=
ho I'm sure some of you know.=C2=A0 He was a real genius with all kinds of =
engines (also dynoed my TR engine a few times).=C2=A0 He mentioned that he =
had used a Datsun electronic distributor as a backup in some of the cars he=
had worked on.=C2=A0 The model he used came in the B210 and a number of ot=
her Datsun/Nissan small sedans.=C2=A0 While we were on the phone, he had me=
get a stock Triumph distributor and a dial caliper.=C2=A0 He had the Datsu=
n distributor.=C2=A0 We took measurements of the key dimensions of the two =
distributors, and they were nearly identical.=C2=A0 The diameter of the sha=
ft that goes down into the block was exactly the same, and the length of th=
at shaft was very close, such that a thin (about 1/4") shim was all that wa=
s required to get the correct height for the Triumph.
>From then on, I used the Datsun electronic distributor as my backup, and th=
e performance was essentially the same as the crank trigger.=C2=A0 The only=
modification required was to change the drive gear on the end of the shaft=
, and I had to make up a shim to get the correct height.=C2=A0 An easy conv=
ersion.=C2=A0 Paul drew up a wiring diagram which showed how to wire up the=
dual system.
When I was sorting through some parts the other day, I came across a spare =
lead that Paul had made up for me, that plugs into the Datsun distributor, =
and with a few feet of wire to attach to the ignition box.=C2=A0 I used a s=
tock Chrysler brain box, which cost $25 at the time.=C2=A0 Some people us a=
n MSD, etc.=C2=A0 Paul's workmanship was very professional, as indicated in=
the attached pictures.
I hate to throw anything away, especially something that was made up specif=
ically for me.=C2=A0 So, if anyone has a use for this connecting wire, let =
me know, and you can have it.=C2=A0 I will even pay the shipping (to the lo=
wer 48).=C2=A0 I believe it will work for most Datsun/Nissan small sedan di=
stributors produced in the 80's and early 90's, and perhaps more.
Jack
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
rydesign.com
=20
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<html><head></head><body><div class=3D"ydp20ef08a3yahoo-style-wrap" style=
=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px=
;"><div></div>
<div dir=3D"ltr" data-setdir=3D"false">I don't have any heads, but =
I'll bet someone on the FOT list knows where there is one.</div><div dir=3D=
"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"false=
">Jack<br></div><div><br></div>
=20
</div><div id=3D"ydp5689a2e7yahoo_quoted_3107212109" class=3D"ydp56=
89a2e7yahoo_quoted">
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
=20
<div>
On Tuesday, November 5, 2019, 11:16:21 AM EST, Alan Ber=
ry <alanb@alanberrydesign.com> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div id=3D"ydp5689a2e7yiv5187482751"><div><div>Need a =
TR4 head for my race car. Any thoughts?<div><br clear=3D"none"></div><div>T=
hanks, </div><div><br clear=3D"none"></div><div>Alan #41 TR4A</div></d=
iv><br clear=3D"none"><div class=3D"ydp5689a2e7yiv5187482751gmail_quote"><d=
iv class=3D"ydp5689a2e7yiv5187482751yqt1854290411" id=3D"ydp5689a2e7yiv5187=
482751yqt37800"><div class=3D"ydp5689a2e7yiv5187482751gmail_attr" dir=3D"lt=
r">On Tue, Nov 5, 2019, 7:57 AM Jack Wheeler via Fot <<a shape=3D"rect" =
href=3D"mailto:fot@autox.team.net"; rel=3D"nofollow" target=3D"_blank">fot@a=
utox.team.net</a>> wrote:<br clear=3D"none"></div><blockquote class=3D"y=
dp5689a2e7yiv5187482751gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:=
1px #ccc solid;padding-left:1ex;"><div><div style=3D"font-family:Helvetica =
Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir=3D"ltr">I've b=
een going through my shop, getting rid of many things for which I will have=
no need in the future.</div><div dir=3D"ltr"><br clear=3D"none"></div><div=
dir=3D"ltr">By the mid-80's, when I was racing the TR-4 in SCCA, I was usi=
ng a crank trigger for my primary ignition system. I also tried to ha=
ve a reliable back-up, which up until then had been a stock distributor wit=
h Lucas Points. But, of course, I never adjusted the points, so when =
I needed the back-up one time, the car wouldn't run right on the stock dist=
ributor.</div><div dir=3D"ltr"><br clear=3D"none"></div><div dir=3D"ltr">Sh=
ortly after that, I was on the phone one night talking with Paul Trapp, who=
I'm sure some of you know. He was a real genius with all kinds of en=
gines (also dynoed my TR engine a few times). He mentioned that he ha=
d used a Datsun electronic distributor as a backup in some of the cars he h=
ad worked on. The model he used came in the B210 and a number of othe=
r Datsun/Nissan small sedans. While we were on the phone, he had me g=
et a stock Triumph distributor and a dial caliper. He had the Datsun =
distributor. We took measurements of the key dimensions of the two di=
stributors, and they were nearly identical. The diameter of the shaft=
that goes down into the block was exactly the same, and the length of that=
shaft was very close, such that a thin (about 1/4") shim was all that was =
required to get the correct height for the Triumph.</div><div dir=3D"ltr"><=
br clear=3D"none"></div><div dir=3D"ltr">From then on, I used the Datsun el=
ectronic distributor as my backup, and the performance was essentially the =
same as the crank trigger. The only modification required was to chan=
ge the drive gear on the end of the shaft, and I had to make up a shim to g=
et the correct height. An easy conversion. Paul drew up a wirin=
g diagram which showed how to wire up the dual system.<br clear=3D"none"></=
div><div dir=3D"ltr"><br clear=3D"none"></div><div dir=3D"ltr">When I was s=
orting through some parts the other day, I came across a spare lead that Pa=
ul had made up for me, that plugs into the Datsun distributor, and with a f=
ew feet of wire to attach to the ignition box. I used a stock Chrysle=
r brain box, which cost $25 at the time. Some people us an MSD, etc.&=
nbsp; Paul's workmanship was very professional, as indicated in the attache=
d pictures.</div><div dir=3D"ltr"><br clear=3D"none"></div><div dir=3D"ltr"=
>I hate to throw anything away, especially something that was made up speci=
fically for me. So, if anyone has a use for this connecting wire, let=
me know, and you can have it. I will even pay the shipping (to the l=
ower 48). I believe it will work for most Datsun/Nissan small sedan d=
istributors produced in the 80's and early 90's, and perhaps more.</div><di=
v dir=3D"ltr"><br clear=3D"none"></div><div dir=3D"ltr">Jack<br clear=3D"no=
ne"></div></div></div>_______________________________________________<br cl=
ear=3D"none">
<a shape=3D"rect" href=3D"mailto:fot@autox.team.net"; rel=3D"nofollow" targe=
t=3D"_blank">fot@autox.team.net</a><br clear=3D"none">
<br clear=3D"none">
<a shape=3D"rect" href=3D"http://www.fot-racing.com"; rel=3D"nofollow" targe=
t=3D"_blank">http://www.fot-racing.com</a><br clear=3D"none">
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ofollow" target=3D"_blank">http://www.team.net/donate.html</a><br clear=3D"=
none">
Archive: <a shape=3D"rect" href=3D"http://autox.team.net/archive"; rel=3D"no=
follow" target=3D"_blank">http://autox.team.net/archive</a> <a shape=3D"rec=
t" href=3D"http://www.team.net/pipermail/fotUnsubscribe/Manage"; rel=3D"nofo=
llow" target=3D"_blank">http://www.team.net/pipermail/fot<br clear=3D"none"=
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lman/options/fot/alanb@alanberrydesign.com" rel=3D"nofollow" target=3D"_bla=
nk">http://autox.team.net/mailman/options/fot/alanb@alanberrydesign.com</a>=
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</blockquote></div></div></div></div></div>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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