Puttin together a Raby kit engine, Deck Height revisited Options

[DNHunt]

Building this has been a blast. I have certainly learned a lot. Jake has been very patient and given me plenty of rope but, when I've started to wander he's tugged me back in line.

Deck Height has been a revelation. My first attempts were all over the place. After working on this for a total of 8 hours I really believe we've got a handle on it. I've learned a bunch.

First, these are very small dimensions. Jake wanted the deck within .004" on all 4 cylinders. We really struggled with this. Check this out a single sheet of paper is between .002 and .003.

[DNHunt]

We tried switching cylinders and that didn't help. So, we switched rods, wrist pins and pistons from 2 and 3. (Jake engraves numbers in all of the rods, wrist pins and cylinders so if you keep the same numbers together it is in balance) That got us to .006. Damn, just a little more than 2 sheets of scratch paper off but still, not good enough. I measured the shims. They were right on. I tried moving the cylinders, no good. I went to bed Thursday night really depressed. I was sure something was really wrong like the align bore was off.

I woke up Friday after a crappy night of sleep stewing over my problem. Before work I went out tp the garage and looked over the case. The cylinder registers on 2 and 3 looked kind of dirty. So I got out some carb cleaner and went to work. Sure enough they cleaned up. After work I retried everything. I'm now within .002

Here's the dial indicator zeroed at top dead center #3