2.3lz piston problem

[dropdatsun]

ok guys im building a l20b 2.3lz stroker. i already purchase my z24 crank, is sais that there is no need of modifacation to get a 2283 cc. but if u get withd a z22e piston it will give u a higher compression. now i can seem to get some pistons that are an ok prize. i work at napa an i cant even get them hear. now my questions is, is there any other piston that i can get so i can get a higher compression or bore biger, and im also getting ready to get a cam for my l20b how high of valve lift or duration i should get..... thanks guys

[datzenmike]

The Z24 crank will not fit anything but the Z24 block. The throws on the crank need trimming and the block clearance ground for it to fit into a Z22 or L20B block..

 

If you want a 2.3 get a Z22 block, crank and rods with K224E pistons. Bore the Z22 out 1mm to 89mm and assemble using an open chamber L head for a 9.8 compression motor.

[datzenmike]

The Z24 crank will not fit anything but the Z24 block. The throws on the crank need trimming and the block clearance ground for it to fit into a Z22 or L20B block. Better read again...

 

Stroker 2.3 Liter

Stuff a Z24 crank into a modified Z20/Z22/L20B block by cutting down counterweights as above. (Stuff a Z24 crank and pistons into NAPS-Z or L20B block bored to 89mm by cutting down crank counterweights and clearance grinding block as per Ben Pila.)

No piston modification or block boring needed for 2283cc L series.

see http://hobbslaw.nissanpower.com/custom2.html for an example

Russ noted that his deck height measured -1.77mm with the Z22E pistons that he first tried using, he eventually used milled Z22S pistons to achieve a higher compression ratio.

Parts: Z24 crank, Z22E pistons, Z22S/ L20B rods in a Z22 block or +2mm bored Z20/L20B block.

s/2+r+p= 96/2+145.9+32.1= 226.0 mm

piston deck height: -1.45mm below deck

 

If you want a 2.3 get a Z22 block, crank and rods with K224E pistons. Bore the Z22 out 1mm to 89mm and assemble using an open chamber L head for a 9.8 compression motor.

[Z-train]

Interesting,i had to use the Z-20 rods to get my 2.3ltr.

[hang_510]

i have 2 spares. i think its time for a trimmin... :ph34r:

only one ive know to do it said they wouldnt do it again!

[HRH]

Yeah, my Datsun guru said the same thing. You get nearly all the benefits out of a Z22 and it's way easier. If going for the extra stroke of the Z24, you might as well just build a KAZ24, but don't cheap out on the pistons like I did. Get the 10.7:1 Arias versions. I think the next motor I build may well get those.

[datzenmike]

Z24 crank with extra stroke is fine but putting it in a shorter block isn't. When the crank and the rod form a 90 degree bend the piston is further down the bore and is subject to increased side loading... the rod is pulling in a sideways direction. This is why the Z24 motor is 2cm taller than the Z22/L20B

[dropdatsun]

ok, so i may have made a mistake. i already have the crank at home i got it throw EPWI, but if i take my crank that i have and my block to the machine shop i can make it work. im just at the point that i want my truck like now do u know what i mean. i did want to go with a z22 crank and a z22e pistons for a big bore but EPWI hade them discontinue them,and the crank was re-furnished and i wasent sure that i was ok with that. thanks guys

[datzenmike]

ok, so i may have made a mistake. i already have the crank at home i got it throw EPWI, but if i take my crank that i have and my block to the machine shop i can make it work. im just at the point that i want my truck like now do u know what i mean. i did want to go with a z22 crank and a z22 KA24e pistons for a big bore but EPWI hade them discontinue them,and the crank was re-furnished and i wasent sure that i was ok with that. thanks guys

 

Fixed. Maybe a bit more research on what will fit and work and a lot more questions. Some of these parts can be hard to find also.

[dropdatsun]

ok, so from hearing u guy i change my mind. im going to take back the crank that i have at home, and get the z22 crank and ka24de pistons. now do u guys know what kind of cam i should get. thanks.

[datzenmike]

I think that's KA24E pistons not DE. If it helps the DE have about 10cc more dish in them than the E pistons. On top of that I don't know what the pin height might be. More research is needed before tackling this.

[Z-train]

For a cam,call Rebello.

[dropdatsun]

OK so what would u do if u were in my place, with my l20b

[HRH]

Just build the L20 or do the 2.2 if you want more oomph. Pistons should still be available through JCC or ITM.

[hang_510]

whats feeding it?

dual carbs???

[dropdatsun]

yeaf i have dual side webers that i pick up like a month a go. i wanned to put them on my 620 that i pick up for 300 dollars from a freind, this truck hasent been running for some few years, now i change the four speed to a five speed started it a few time and it ran with no problem, but as soon i instaled the webers my rear main seal started leaking like crazy. i had plans on building a 2.3lz but not so soon i have other projects i was working on. but since i had two block laying arround i decided to go all out and build one right. only thing that im missing is a cam il be picking one up by next week.

 

 

 

[Master-O-Turbonics]

i decided to go all out and build one right.

Get Mahle pistons.

end of story.