S2000 Inernals: Schooled Again
You guys keep stating in your magazine that you cannot use S2000 internals in K-series engines, and that is simply false. Our race EP3 had S2000 valve springs and retainers in the stock K20A3, and people online use the crank, pistons, and oil pumps in K24s andK20s. This is something that is making you guys look bad every time you tell someone those parts don't work in Ks.Remy Rounds, Sheridan, Colorado
Think you need to read a bit more closely, bud. Nobody ever said any of these things couldn't be done, just that there're better alternatives. Here's the breakdown from June's and September's Exhaust Notes along with a bit of enlightenment for you to chew on.
The Valve Springs And Retainers: "John supposes that you might be able to use the valve springs and retainers, but why would you?" (Quoted from the June 2008 Exhaust Notes). Nobody's saying that the S2000's valve springs and retainers won't physically fit inside the K-series head, because they will; it's just a mod that doesn't make much sense what with the availability of aftermarket valve springs and lightweight retainers. The F20C head presumably has internals that are capable of engine speeds a bit beyond its 9,000-rpm redline, but there are many aftermarket spring and retainer packages that'll better that by a good 2,000 rpm and cost about the same.
The Crankshaft: Well, we never said anything about the crankshaft, but since you brought it up, now's a good time to talk about it. The answer is yes. Yes, the S2000 crank shares the same bore spacing as the K and will fit in the K-series block as will the H22A and H23A ones, which all provide different strokes and rod ratios than what the Ks have. But, the S2000 crank doesn't just drop right in. The snout needs to be machined in order to work with the K, which makes it doable and, in our opinion, the one S2000 part that does make sense for K owners, that is if you're looking for a different rod/stroke ratio and displacement.
The Pistons: Again, S2000 pistons were designed to be used with the S2000's FRM cylinder liners. Will they fit in a K? Sure. Will they expand and seal like they're supposed to? Well, sort of. Yes, a few respected engine builders have been known to use such pistons, but we suggest you study up on Honda's FRM technology and the different piston alloys that are recommended before getting into this. Also, you've got that whole wrist pin situation. The S2000's wrist pins are larger than the K's, which means the rod bushings need to be pressed out and re-bushed. That's a whole lot of trouble just to get some weak, factory rods to work-looks like new rods will be in order too. Hmm, at this point mounting a set of OEM pistons on some aftermarket forged rods isn't looking like all that great of an idea is it?
The Oil Pump: "The one part that is interchangeable with your K is the S2000's oil pump, although such a swap is rather pointless what with all of the enhancements available for the K pump from companies like, you guessed it, HyTech." (Quote from the June 2008 Exhaust Notes). It doesn't sound like anybody's saying the S2000's oil pump won't work here, just that it might not be the best idea.
Now who's looking bad, Remy?
...
>>next page