Just another 2056 build, Misc Questions Options

[sdoolin]

Yep, I am building a 2056. Have ordered very nearly a complete 2056 engine kit from Type IV Store (LN Engineering). Some questions (I have searched and read MANY threads)...

I have a "spare" 1976 VW Bus short block (no cyl. heads). Assume this will work for a starting point? Issues with oil dipstick? The bus was an automatic so I assume once I remove the "flex plate" that the flywheel from by 914 engine (in car) will bolt up to the crank without issues? Any issues with engine carrier? The bus used a "moustache bar" for mounting to the frame and I am hoping that the cases from the bus/914 are the same for engine mounting?

Will re-use existing Crank/rods
New crank/rod bearings
Will re-use existing cylinders (overbored)
KB 96 mm flat topped pistons with Hastings rings
Webcam cam (9130 kit from Type IV Store)
Type IV Store pushrods, pushrod ends, parkerized lifters, rocker shafts
Type IV Store cam bearings

Re-use rockers from bus engine? Not sure about this...

HAM (Len Hoffman) RS+ spec cylinder heads
New Oil pump from Type IV Store
New clutch & pressure plate.
Re-use flywheel from 914 engine (in the car)

Dellorto Dual 40mm carbs, CB Perf manifolds & linkage
SSI heat exchangers & Bursch exhaust
New fuel pump - will run return lines (have CFR SS Lines in car now and will re-use)

Not sure what dizzy to run?

I believe I need to check/verify deck height and valve clearance (I know how, just not positive this is required for a 2056 build).

I have read a few threads about "setting" compression ration, but do not understand it yet? Anyone have a compression ratio for dummies guide?

Anything else I'm missing?

Progress so far...

[sdoolin]

More deck height and compression ratio questions (really the same one but I never got a response(?)).

I have measured and re-measured deck height on all 4 cylinders. All come up with 1mm deck height in the jug. I got sage advice from HAM that there is 1mm of step (deck height) in my cylinder heads. This gives me a total deck height of 2mm.

I am targeting 9:1 Compression ratio. Plugging the numbers into CB's engine calculator and solving for deck height it yields 1.28mm for a CR of 9:1.

So I need to remove 2.00mm - 1.28mm = 0.72mm.

I'm pretty comfortable with my measurements and with this math.

My question (finally) - can I remove 0.72mm from the jug, or do I need to remove it from the head?[i] It'd be much easier for me to remove it from the jug, so I'd prefer that, but if the conventional wisdom is against that, then I'll send the heads out.

If it is OK to remove this material from the jugs I could get it done this weekend and complete the short block...

As always - thanks in advance for all assistance.

[stugray]

I got sage advice from HAM that there is 1mm of step (deck height) in my cylinder heads. This gives me a total deck height of 2mm.

I am targeting 9:1 Compression ratio. Plugging the numbers into CB's engine calculator and solving for deck height it yields 1.28mm for a CR of 9:1.

If the heads have a 1mm lip, did you account for that in your combustion chamber number?
Or did you measure the comb. chamber volume?

You comb chamber number seems smaller than a stock head.
I had to shave my heads down significantly to get below 55 cc.

Stock is almost exactly 60 cc.

[sdoolin]

I got sage advice from HAM that there is 1mm of step (deck height) in my cylinder heads. This gives me a total deck height of 2mm.

I am targeting 9:1 Compression ratio. Plugging the numbers into CB's engine calculator and solving for deck height it yields 1.28mm for a CR of 9:1.

If the heads have a 1mm lip, did you account for that in your combustion chamber number?
Or did you measure the comb. chamber volume?

You comb chamber number seems smaller than a stock head.
I had to shave my heads down significantly to get below 55 cc.

Stock is almost exactly 60 cc.

I did account for the 1mm step in the heads in my combustion chamber number, or rather Len did at HAM. I did not CC the heads myself, that was done by Len at HAM. The spec sheet that came with the heads says the chambers are 55.2 CC. I am pretty sure Len's number is accurate. Much more so than mine.