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> Just another home build 2056 upgrade...but this one is mine!, Redux THrē: It's been so FUN lets do it again.....
rfinegan
post Apr 27 2021, 06:31 AM
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shimmed rocker to .050
Push rod length 27.27 cm

this turns out to be the wrong way to do this...

Started over and things are looking fine without the shims and the pushrods are close to the stock length...

FWIW: The aluminum rod to help align the adjuster is from a shot gun cleaning kit ;-)
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rfinegan
post Apr 27 2021, 01:26 PM
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UPDATE:

Removed all the shims
Base line push rod to stock: 10.66/27.1

Lengthen push rod 1/8 turn till alignment @ 1/2 lift .238/ full lift .476 (card .465)

Final
Intake push rod length 10.704in/27.188cm


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rfinegan
post Apr 27 2021, 01:27 PM
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another view
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rfinegan
post Apr 27 2021, 01:28 PM
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rfinegan
post Apr 27 2021, 04:35 PM
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Here is a picture of the contact patch on the valve stem when rolled 2 times aroundAttached Image
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rfinegan
post Apr 28 2021, 01:15 PM
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Ditch the laser for an angle gauge for the exhaust valve geometry. The push rod is a little smaller than the Intake. More on that...

Set a base line angle of the valve stem with a collet holder on the stem and an angle gauge HERE: 3.5 degrees

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Next I do a full lift rotation of the cam and measure with a dial indicator at the retainer of the valve. .458 in
Cam card .465 less than the needed 5% loss
1/2 lift =229

I mention the wrong gross value in the video but use the correct 1/2 lift of 229


https://www.youtube.com/watch?v=TFHP6UVlFv0
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rfinegan
post May 17 2021, 11:25 AM
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Finished the last 2 Pushrod measurements last night. Good news is a few of them are the same across cylinders. ODD however one (first cylinder) #1 had no shim. All the others had .015" , but the lenses are close to the same
I will measure them again and see if the if it was performed correctly. Others would not adjust zero lash unless I was much under the stock Push rod length . shim put it right in there
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pilothyer
post May 17 2021, 01:52 PM
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Looks like you have gone to great pains to get your geometry as (nearly) perfect as you could. I am also in the ranks of those who believe this is a vital part of the engine build.
I do, however, wonder what happens to this "perfect" rocker geometry as future valve adjustments are made.
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rfinegan
post Jun 13 2021, 12:03 PM
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I was getting ready to do a quick video on cutting push rods and while pressing the tip on may last intake push rod, I noticed it was much too long. About 0.030 inches too long.
WHAT WENT WRONG? All the others were within 0.001 of my desired final length. NOT a big a deal I got another one on the way. $9.95 but shipping was more than the part. But I wanted to be sure they were the same brand and I want a complete the set.

Seems I had "30" on the brain...my target was 11.300..I cut to 11.330. Wound be fine but i did not notice till I had pressed on the tip (IT IS NOT COMING OFF) It was not till I was cutting another push rod that I found out what my hang up on the .030 mark on the dial caliper was not "0" or .300

Working on the spacers for the rocker shafts . Number all the parts for each location to ensure they go where they need to go and the .003-.005 spacing clearance is maintained. THIS INCLUDED THE END Clamps. As they wear on one side (spring side)

I will get a video on this too ounce I set up the final Push rod cut length and confirmed.

But for now:


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rfinegan
post Jun 16 2021, 03:21 PM
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Tonight I received my replacement pushrod from EMW and will walk us through how I cut the pushrods and assembled the ends for a final length.


calculations and cutting push rods

https://www.youtube.com/watch?v=TNfHK3SpwbQ




Final cut and assemble tips for completed push rod

https://www.youtube.com/watch?v=kteDX9ZgNZw
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rfinegan
post Jun 27 2021, 08:09 AM
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installation and torque heads


https://www.youtube.com/watch?v=05f0xu0mPRQ
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rfinegan
post Jun 27 2021, 08:21 AM
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installation of push rod tubes


https://www.youtube.com/watch?v=Uh-IR46lVuc
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rfinegan
post Jun 27 2021, 08:30 AM
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The 2056 is starting to look like and Porsche engine ...Attached Image
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930cabman
post Jul 10 2021, 04:10 PM
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When will this baby sing? Thanks for posting your build
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rfinegan
post Jul 10 2021, 08:00 PM
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I think I have the last few bits needed to finish( less a few tunings jets TBD) but I may pop for the Tangerine stub pipes before the test and tune just to make sure she can breathe

-Robert

I Was shooting to finish by independence day...but any day in July will due
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rfinegan
post Jul 11 2021, 02:20 PM
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Today I am installing the last of the push rod tubes, along with the cool tins for the heads, the solid spacers for the rocker shafts and installing the shafts and setting the lash to zero for start up


https://www.youtube.com/watch?v=MaWDpwd_7dg



https://www.youtube.com/watch?v=5jjCTQBDIUw
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rfinegan
post Jul 12 2021, 04:43 AM
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from another Question thread here on the World:
http://www.914world.com/bbs2/index.php?act...=0#entry2930085
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Root_Werks
post Jul 13 2021, 05:16 PM
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A well built 2056 is a great power plant for a 914. Driven only a few, both were FI and really impressed me.
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rfinegan
post Jul 17 2021, 02:24 PM
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Rebuild the early weber 44 IDF

Initial tune to:
55 idles jets
200 air bleeds
F11 tubes
36 vents
150 main jets


Will add the return springs, arms and Tangerine racing cams and cables on the install day. Also some extended Jet holders (just stacks). Maybe when I order the new jets on tune day

Need some cast 2 bolt air cleaner bases to match the top

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barefoot
post Jul 17 2021, 04:55 PM
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Will add the return springs, arms and Tangerine racing cams and cables on the install day. Also some extended Jet holders (just stacks). Maybe when I order the new jets on tune day

Need some cast 2 bolt air cleaner bases to match the top

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[/quote]

Is the ID of those velocity stacks the same as the carb barrel ID's right at the top ?
Don't know what throttle linkage design you're using, but look closely.

My Dell 40's using the cross bar top plates resulted in the ID of the top plates being larger than the carb barrel bores. That resulted in a zero radius for air entering the carb itself. I made my own 2 piece velocity stacks. Had to be 2 piece as the lower part fit UNDER the cross bar top plate. This would not permit a well radiused inlet for the top part as not enough OD .

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