On 10/31/2004 I did big-end journal sizes of one rod, to get some practice in on using my caliper (analog, thimble-type). I concluded that it was 2.244, which is about 4 thou above high-limit for a std rod.
On 7/3/2005 I measured by weight the rods and the new JE pistons I got. The rods have numbers on the outside of their caps (so you don't mix/match them--why two of mine have the same number(!!) is beyond me.
Because there are two 204s, but their weights are different, I'm referring to one as "204(h)" (for "heavy"). It is a pig, well, really, the 700 is 1.5g too light and shouldn't be in this set, but what are you going to do?
The pistons are a little close than the rods, only 0.5g off, rather than a full gram (unacceptable).
|2 ||410.5 ||95|
|4 || 411.0 ||95|
I have to do some dressing to get this gang of parts within spec. If I start by matching the 411.0 piston with the #700 rod, I can reduce that big diff between the 204(h) and the light 700 rod. I was hoping I would only have to dress two rods, to be a 1/2 gram out on the high on each throw. But the rods were two grams different high to low, and the 0.5g of the pistons doesn't cover that gap. If I took the heavy #204(h) rod down to 480.0, that would bring its total to 890.5 and within a 1/2 g of the two "middles. But that leaves the "low" pair still a gram out. Does that 1.0g put too much whip on the crank? Which journal should the low pair of rod #700 go on if there is a difference?
|Mix and match table|
|Rod No.||Rod wght||Cyl. Wght.||Total|