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It looks so forlorn sitting there it is time to start working on it
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The blower needs to be bolted to the intake. We have
been using steel threaded rods for mockup, but that will not due for
running down the track. Roo Man made up some aluminum bolts which
will break if there is a problem. The threaded holes in the intake
are blind threaded holes and each is a different depth. I measured,
cut and numbered each rod for each hole to get the maximum depth and
still have as much thread in the arcon nut as possible.. I still
cannot get the show car out of my blood. |
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Spent a little money on pulleys today. It turns out
that after these arrived, two reasons why these may not
work out came to light. One is my fault and the other is out of my control, more
on both these reasons later, read on. |
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This is leading you down a
guided path to a dead end, I'll let you in on the secret in just a
minute. If yo look closely in the first picture you will note that
for some reason RCD used cap screws to hold the stand offs for the
belt guard on the two center bolts. These bolts over hang the
pulley. I am under driving the blower which means there is a large
pulley on the top and I want to be able to tune to a 8.5 index. That
means I might want to go to an even larger pulley. So.... off
came the guard, the standoffs were shortened and the cap screws were
replaced with countersunk Allan head bolts. |
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Ok, I will now let you in on
one of the secrets why these pulleys. The current setup on the
blower drive (43 tooth lower pulley, 54 tooth upper pulley) will
give me a -20.4 percent under drive. Preliminary stabs at a tune-up
suggest that will be to fast for an 8.5 index and that a larger
pulley will need to be installed on the blower. When we were doing
the above fix the problem below came to light. Now I know you are
saying why didn't you see that earlier, in my defense at lest 15
people have been working on this and no one saw it. You had to get
down at the right angle to see it. When we turned the engine over
with the started there is just enough clearance that the belt doid
not hit. |
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So.... I obviously cannot go
to a larger pulley to slow the dragster down to the 8.5 index. The
second shoe fell when I went to the Gasser Racing Series drivers
meeting. They handed out the new rules for the 2013 season (got a
feeling for where this is going)? The new rule inserted in the rule
package read, Supercharger Permitted but limited to standard roots
type, well I have been working on this high helix modified retro
blower since last fall. So... $3,500 later and new standard
Littlefield blower with a new spacer has been ordered. That will put
me within the rules and decrease the size of the upper pulley (kind
of like hitting a nail with a sledge hammer, but it works. Oh yes,
one more thing, I got a call from GRS officials after I place the
order , that is not what they meant by the rule, they just did not
want centrifugal blowers. My High Helix would have been ok. |
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The engine will not fire without spark so a
bracket has been made for the coil. |
Another stumbling block for
firing the engine is timing so we (the car nuts) made a cylinder
stop out a spark plug and found top dead center. Anone that tells
you that breaking out the ceramic in a plug is easy has not done it.
It easy to crack the ceramic but to get it out without damaging the
rest of the plug is hard, we went through 4 plugs to do it. TDC was
one and a half degrees off a ten degree mark on the degree wheel. It
has been permanently marked on the degree wheel. |
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Got a present from Spud Miller today, tune up
and flowed fuel system |
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With the pump back, the final
fitment of the bracket to hold the pump could be done. the end
result was a bracket that can adjust the belt tension of the fuel
pump, and hold the cable for the fuel shut off cable. |
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Now starts all the little
tasks that is 10% of the total task, but 90% of the time spent
fiddling. The feed line to the distribution block hits the blower
restraint. |
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Bolted the hat on, getting close, I think this
Saturday we will try an fire it. Made a small modification to the
hat so that it is easier to bolt on. |
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The coolant fill tank is not connected to the
pump. |
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http://www.youtube.com/watch?v=r6zRsObuerw&feature=youtu.be |
It Runs. |