Lift Bore to Cylinder Bore Centerline

[Indycars]

Is the lifter bore centerline and the cylinder bore centerline parallel ??? I'm showing the lifter bore centerline intersecting the camshaft centerline, but I don't know this for a fact.


I'm trying to make sure the dial indicator and lifter bore centerlines a parallel by using the the deck surface and a Square to check with. But that only works if they lifter and cylinder centerlines are parallel. After using the Square to align the dial indicator it does not look right when I compare the lifter to the indicator.

 

[grumpyvette]

be aware that on many engines the lifter bores and cylinder bores are not parallel by design.
its rare for the chevy factory lifter bore gang machine work done to be perfect
yes on sbc they will in theory be parallel

on big blocks they use
38.75 DEGEES
45 DEGREES

http://www.bhjproducts.com/bhj_download ... p10-11.pdf

http://www.bhjproducts.com/bhj_content/ ... xt/ltk.php

http://www.performanceblocks.com/CNC_En ... ction.html

viewtopic.php?f=38&t=11

http://www.iskycams.com/techinfo_index.html

 

[Indycars]

its rare for the chevy factory lifter bore gang machine work done to be perfect
yes on sbc they will in theory be parallel

They should be far better than I can tell by eye sight.

So using the square is a good way of confirming that the dial indicator is parallel with the lifter bore and making sure that I introduce very little error in my measurements.