Mike's KAZ23

[datzenmike]

The KA hole it to the top.

[nerdistmonk]

so i take it that an lz23 is like a musical medley of 3 engines (L series, Z22 and ka24?)

 

yikes i would hate to be the poor mechanic to rebuild that sucker and no one told me what it was first lol.

 

My truck is already like that, no one could work on it BEFORE i modded it, if they cant work on it stock, now its hopeless :w00t:

[datzenmike]

Z22 block, KA24E pistons and Z22 or L20B rods on a Z22 crank with L20B head. From the outside it will be hard to tell it isn't an L20B.

[Dirttrack510]

This should be an interesting combo, I can't wait to see it all put together :)

[datzenmike]

From that grocery list you would think that the increased bore displacement being squeezed into a smaller L head would run a huge compression but the piston actually stops 1.55mm below the top of the block. In effect this 89mm bore X 1.55mm space equals 9.637cc of extra combustion chamber. It's like having a huge piston dish.

[Dirttrack510]

so what does that compute to for a compression ratio? Big displacement that's streetable and high horsepower?

[datzenmike]

The above with a open chamber L head....9.7 to one.

 

Probably a U67 so I can easily run an early L16 4 into two manifold. May hog the combustion chamber slightly to lower the compression even more, like I said haven't worked that out yet but 9.7 is do able. Maybe get it running on this then...

 

I have a couple of KA24E heads.... better breathing and cross flow. Compression would be in the 7s but easy enough to cure this.

[mattyhacks71]

I'm really enjoying this thread, I feel like I'm learning lots :)

[flatcat19]

Finally.

 

And in 7 more years we may get to see it run.

 

:poke:

[datzenmike]

Yup. True story.

 

Build threads have an energizing effect.

 

Was thinking R-1 carbs for the win.

 

Feeling energized yet?

[Dirttrack510]

YUP!!!

 

[goonfan]

Sounds like a lot of fun. I'm jealous!

 

If you go KA head you think you might solve that low CR with a turbo?

[datzenmike]

I'm a believer in higher comp. even with a turbo. Or else the motor is a dog when not boosting. I have something else I want to try that I've been thinking of for years. 

[polski ogorki]

Laughing gas?!?!?!!?!!!!!!

[flatcat19]

Methanol?

[datzenmike]

Pump gas, just something I wanted to try for a long time. Forget about it until I succeed.

 

Well I delivered the Z22 block to the machine shop along with the 89mm pistons.

 

Did not know he needed the main caps to bolt it down for boring. I know that a torque plate is used to stress the top of the block to simulate the head being bolted down to keep the bore circular. I'm dropping the caps off at a local NAPA which deliver to him all the time. Because he is the closest machine shop they do favors for him. The caps will get there in a day or so.

 

He'll measure out the KA pistons and bore accordingly. I asked that he mark which piston goes in which hole.

 

The block was pressure washed but he'll give it a good bath as well.

[Spoona_Jay21]

awesome! i learned alot here... makes me want to do this swap... hmmmmm....

[datzenmike]

Main caps ID'd and put in separate baggies and into a box. Delivered to NAPA before 8:00 and they should be there today and in the machine shop tomorrow.... not that there's any rush. Just moving forward.

 

Have to soon get to work on a head for this. Have some ideas just got to think.

[datzenmike]

Dismantling the head. Cut notch in old C clamp and used magnet to fish out the retainers

 

 

All out and cleaned up.

 

Got thos big plastic thing for $20. Marked it and cut the bottom off for a tub. Eight inches of hot water and a can of Draino makes a nice wash tub for removing grease and shit.

 

 

 

After20 min.

 

 

It was fizzing pretty good so I sure wouldn't leave in there over night. Probably reacts with aluminum

 

 

Intake gasket was particularly difficult to get off. Later I'll use a soft wire wheel to polish it clean. The exhaust was chevy red neck Red RTV.

 

Saw what appeared to be a bluish elastic band caught in one of the water passages.....

 

If ever there was a reason for mounting water pump and timing covers dry... this is it.  I pulled all this shit out of there. Blue redneck Chevy RTV

 

 

Had a spare bolt so I ground away some along the length

 

Chased all the int. and ex. bolt holes

 

 

Intake rocker shaft has one dot and exhaust has two to show direction to front of motor.

 

Was sure to clean the coked oil in the X groove that oils the rocker arms.

 

First set of rockers had bluing, from heat I would guess.

 

 

And slight galling inside.

 

Switched to my other rocker set..

 

Take note the intake side, middle rocker spacer/retainer clip is off set with bolt slightly to the front

 

Several of these clips were bent up and not really helping to position the rockers properly. I bent them back into place.

[flatcat19]

Are you rebuilding the Z head?

 

Title would dictate putting an L head on.

[datzenmike]

I figured it was a mixture of L Z and KA parts, does it matter what goes first?

[flatcat19]

Nope.

 

I should just keep my mouth shut and enjoy the show.

[Sealik]

Are you rebuilding the Z head?

 

 

 

 

Possible KA head....

 

I assumed he was running a bored Z22 block...L head and a KA oil pump.... ;)

[datzenmike]

Good eye Doug.

The L head on Z block has been done. I have two E heads one without a cam, or I should say the cam I got for it is broken slightly. The other head came with a cam and the second set of rockers I'm using.

Yes indeed a KA24E head on a Z22 block will be interesting. Gotta breath better than any L head made. Smaller lighter valves too. There are some problems to address but I have a plan. Not just any carb will do for this either.

Was thinking...

 

With tuned length velocity stacks.

[SandyMush620]

THAT will be interesting.