I sent this when Mark was playing with the server. Those mentioned in
the email received their email directly but alas, the Tiger list did
not. So, just in case you wanted to know...
mayf
***********************************************************************
Just to keep everyone up to date on the SBF build of the Sunbeam's next
motor....
Most of you have contributed in one way or another to the design and
construction of this motor by providing parts and guidance. Let me
reiterate the particulars as they stand now:
1) Block(s) from Rich fox and Jack Costella
2) Crank from Mr. Bill (Mitchel)
3) Rods, roller lifters, roller rockers and cam from Sandy Ganz, the
Professor
4) Owain, AFR heads
I had the first block machined in Las Vegas and they killed it trying to
remove the oil passage plug in the rear of the block. Fortunately, there
was a spare. Even though I had also specified that the shop grind the
crank in a specific way, they did it their way and ruined it, then
wanted to swap the rods for some other rods to make it work. I said no,
get me another crank and they kicked me out of their shop..but with a
new crank and machined block. I had the crankshaft redone at Marine
Crankshaft in LA and neutral balanced. Do this only if you have the
winnings of the national lottery in hand, lol. I ordered pistons from
Wossner and after more than two months they had made no progress on
pistons. I wanted a 14:1 CR. I finally told them to suck eggs and went
to Probe. They said sure, we can do that..only they couldn't. They sent
the order to Ross who made pistons but only in 11.4 CR. So power will
be down. Note that the rods that Sandy provided are from a 347 stroker
kit which means that the rod angles will be less with less sidewall
scuffing on the power stroke or so my theory goes. Rings are gap less
total seal rings and low tension. I purchased a Comp Cams timing chain
set with Torrington bearing as thrust control and it is nice as well.
When I chatted with AFR regards the capability of the AFR 165 heads,
they ind9ocated that the valve springs would not handle lift and rpm I
wanted to use, so I obtained a set of their much stronger springs with
smaller coil wire diameter to permit the lift. The crank operation took
nearly 6 weeks to complete. The pistons took longer so the plan to run
this year went up in flames. while waiting for parts I decided to build
a run stand for the engine to sort out the electronics I would need to
take it to a dyno somewhere in Las Vegas. I had to fabricate, twice I
might add, an adapter plate to mate the block to AOD transmission I use.
My drill press was not up to the accuracy needed. I purchased all the
parts needed to complete the run stand. It is all together now and day
before yesterday, I finally gathered up the balls to start the sucker.
Always a factor when considering EFI and my wiring skills. It ran but
only with some serious fiddling. Turns out that for some odd reason,
that I used one set of timing marks on the damper to fab a pointer and
set it at TDC, then used another set of marks top install the dizzy.
Needless to say it was way off. But we did get it to run and reasonably
well. Yesterday I put the motor back to TDC using the correct marks and
redid the dizzy. We then started the motor (we, being my wife and I) and
after a bit of fiddling, got the static timing to 10 degrees. Then gave
control of the spark back to the computer and refired it. Idles pretty
well now, however, I had to open the throttle blade a couple of turns on
the adjusting screw. I need to investigate that some. Probably needs a
new gasket or two . I reused the intake manifold and injectors I had
with the turbo motor. I need to rescale the injector low slope for the
rpm and engine size now though. And I will rescale the load v spark
table as well. Fuel is probably all right.
But, the bottom line is...IT runs and seems to run well. I chatted with
Rick Gold and got his gasoline recommendation and will be ordering a
drum of that for dyno testing. I want to eventually add a dyno brake to
my run stand so I can wear out the motor before I run on the salt, lol.
Elon and I have been chatting with concepts to do this for some time
now. He has some good ideas.
I have made a couple of videos of the two runs so far. But they are
large. The first one was HD 1080P and took 460 MB for 7 minutes of run
time. Next I rescaled the video to use 320 P or some such and that came
out at only 53 MB. I recoded both to something way less, lol, but still
too big to email. I will need to cut them down some. If I can figure out
how to edit the video. As soon as I can get them to a manageable size
then I will either post them to the autox forum or my own webs site for
download. Just so that all of you who had a hand in this can see the
fruits of you inputs and provisioning.
Oh, and I want a dyno brake, beg, borrow or steal, to handle about 800
hp at more than 8000 rpm. I want to put it on my run stand.
Many thanks to all of you for helping me make it happen! I will keep
everyone informed as the next year approaches....
mayf
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______________________________
drmayf
Worlds Fastest Sunbeam, period.
204.913 mph flying mile
210.779 mph exit speed
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