o.k. ... got my undamaged cylinders back from rimco for the 2056 . got the dished 96mm pistons ready, installed and checked d/h, with a .045 shim in, they were at .044 to .045. i've not rushed this build and am only going the speed it takes to do it right. it's only been down since september! just kinda hoping to have it on the road for my son, kenny's graduation this spring .
HERES my questions:
QUESTION#1] i need 8.3:1 max. (as per jake) i'm running d-jet with re-calibrated mps... i have a set of LH 039 modified 2.0 heads w/ 55 cc's + 71 stroke + 96mm pistons + 5.769 cc dished. i ran the formula and am blown away at what size shim i will need, i'd love input if my math is right.
55cc + 5.5cc = 60.5cc
stroke 71cc
bore 96cc
compression 8.3:1
------------------------
shim 1.3"
QUESTION #2] if i'm limited to stacking "no more than 3" shims to get the desired thickness (as i've seen mentioned). i'll be looking locally for shims if possible due to time or may purchase a custom set from jake
mike
I get an 0.051" shim. Good news!!!
http://www.cbperformance.com/enginecalc.html
All your cylinders have EXACTLY the same deck measurement.
You better go buy a LOTTO ticket
the best I could do was .002 difference after swapping all cylinders and pistons and rods till it came out like that.
i did the check and with a .045 + .010 shim i would have 8.2:1 on 3 cylinders and 8.3:1 on 1. shouldn't that be considered WAY within a reasonable tolerance?
how about if i put a .004 under the highest c.r. cylinder and .002 under the second highest c.r. cylinder to lower. would that very minimal difference in side to side heighth effect head sealing? are there thin shims like that anyway?
mike
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