Diesel crank???

[xray]

..........post deleted, duplicate link

[ezzzzzzz]

KTM, take a deep breath and relax. First of all, we're talking about the possibility of dropping a LD28 crank into a L24 block. It is very doable. The choice to do so is in the hands of the Z owner. It would be an interesting build. Now for some real facts, I could put that crank into that block using 240Z rods and an E88 head with 44.7 cc chambers(for example here). Use a stock gasket of 1.2 AND, most importantly, CUSTOM pistons. A set of 84mm slugs with a compression height of 33.35mm and -10.9 cc dishes would yield a respectable 8.4 c/r and 2.76 liters. How about a P90 and flat tops at 8.615 c/r? How about a N47 and -5 cc dishes yielding 9.155 c/r?

We're talking ideas and possibilities. One man's ceiling is another man's floor. While you're calculating try using this engine program which allows a lot more flexibility.

http://www.ozdat.com/ozdatonline/enginedesign/

Oh yeah, a E31 with -10.5 dishes will get you 8.7 c/r...................

[ktm]

ez, I am only offering a counterpoint to yours. Dropping in an LD28 crank into an L24 is going to require some thought and preparation. He will not be able to use the L24 rods and L24 pistons with the LD28 crank. It is very important that that point gets across.

You mention using custom pistons, and I agree that anything is doable. However, the original poster may not know that he can not simply slap in an LD28 crank and use the rest of the L24 internals.

I have been using that calculator. I just have not taken into account using custom pistons.

I do all my calculations trying to use readily available stock components, save for boring and shaving.

[ezzzzzzz]

I'd like to use readily available pistons too. Most strokers are punching out the blocks to 89mm so a stock nissan piston can be used. All of the c/r's I mentioned were based on pistons with ) deck height. I don't need a 3.1 or 3.2. Pushing the block to it's outer cylinder wall limits doesn't give me a fuzzy feeling. If Red Dog is considering a stroker I would hope he would study up on the subject or already have a basic understanding of the mechanics involved. Sorry if I came across brash. I've seen a lot of people using the Lengine program which not comparable to the OZdat utility.

[red_dog007]

Man, some of this talk was a wee over my head.

Basically, a lot of part searching and custom making. I will be looking forward to this once I get my Z restoration complete and saving a few thousand for this to happen.

I recently found a guy 2 minutes from my house who has a Z junk yard and does everything mechanical on all Z cars. Been in business since 78' so once I get my Z out this way, I am going to have help from someone who knows what he is doing.