Just another home build 2056 upgrade...but this one is mine!, Redux THrē: It's been so FUN lets do it again..... Options

[rfinegan]

Porsche 914 2056 upgrade

1.7 case upgrade from 1.7.> 2.0 now> 2056

53.9 cc (turns out these are 1.8 heads)new 2.0 style chamber with 44 x38 valves and 57 CC cambers 9.0 CR

Cam Shaft /lifters RABY 9530. See Cam Card

KB 96 Pistons and rings (2.0 rods) EMW

H-Beam rods ARP bolts. EMW

2.0 Crank.25/ Standard /.25 rods

Webber 40 and 44 carbs

Short Pierce style manifolds 3/4 bolt

Malory Unilite Grey-Grey Distributor

Pete Weber 1 5/8 4-2-1 with Evo 2 muffler Tangerine 1 5/8 stub pipes and
with 02 bung at collector

Innovate LM-1 with RPM

Balance internals

Balance Crank NEW lightened/flywheel and Pressure plate with blower

1.7 tins complete

9.0 CR with Deck height to .040

Recommend RPM range. 6200?

Est HP GOAL. 130-140 HP?

After a tear down of my 2.0l engine I started the build up to the 2056 big bore upgrade. Having a Bridgeport I started with the (5) 3/8 oil galley plug on the block halves
Drilling a hole in the plugs and a slide hammer to remove the old plugs then started the installation of the new pugs I was able to order from Type 4 store.





https://www.youtube.com/watch?v=50CYceSrBq0



https://www.youtube.com/watch?v=GOMa6nqbkBQ

[rfinegan]

Tonight, I fitted the second thrust bearing in the other case half. ( thrust bearing with tang) along with the center and rear cam bearings.

1) Remember to stone the back sides of the bearings. The stamped part numbers and sizes will displace material from the stamps and the bearing will sit higher there, deform and run tight.
2) The second thrust was tight and did not fit in the cam. I had to hone the thrust with 600 grit and flat surface. My Kurt Vice is a flat as I can get, hard steel surface. Hone with light spray oil 4-6 stokes on each side and try to install again. I keep with this procedure until the cam turns with no tight spots. Then proceed till I get 0.002 end play. Clean each time and light oil
3) Return to the other case half on the engine stand and stone the backs of the bearings.( I forgot about this)
4) Also remember to Tap the cam lightly with a soft brass or aluminum punch and dead blow hammer. 5 taps on each end to seat the thrust bearings in the case. Cam spins better with this and less drag!
5) Assemble cam and both case half. Test cam for spinning free. Mine would turn with screw driver OK..but more then before
5) Hand tight bold for case halfs. Same spin test. Light drag with large screwdriver in pump slot. OK but not great.
6) Tighten case bolts to 14 lbs. Spin test again. Same as above a little tight by hand and OK with screwdriver
7) 5 taps on end of cam wit head blow and soft punch. Spin test again. EVERYTHING GREAT. Spins EZ by hand. Check end shake. Small play of .002 Perfect

Tomorrow: (IMG:style_emoticons/default/drooley.gif)
Bolt stretch of the ARP bold and plsti-gage the rod bearings. Install gear, bearings and pins. IF all well install cam, crank and case halfs.
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