L26 swap 720 advice

[wayno]

There is not a lot of room between the intake valve/seat and the spark plug hole next to it, that could be the issue if it is one of them plugs.

I don't see a way for it to hit the piston face unless he has pop up pistons filling the cavity which doesn't seem likely, not a performance engine, smog compliance engine.

The thing is that the Z24 is not a high RPM engine, mine didn't like it above 4500rpms, it's really not suited for circle track type racing.

Seems like it would be better for him to put an opened up L head on it with a racing cam and some side drafts and scream around in circles all day long, although with that bottom end I suspect 7000rpms all day long would be questionable.

Is there another head that will fit on the Z24 block, KA?

[Lockleaf]

Nothing as easy as L series head. I think HRH built a KA/Z and it was quite the deal to build it.

[flatcat19]

Too much work to KAZ a Z24. LZ24 is probably even worse.

 

 

LZ22/23 seems like a way better/easier option.

Only hard parts are finding the L20B parts, L head, and a good Z22.

[Rhino13]

Mine has an lz22 with 4.11 gears, and it rips out corners in second and third gear. These motors are way more fun than the stock z series and fairly simple to build. Its just sourcing parts like flatcat said. Lz24 you need to lengthen timing chain and modify the timing cover to be tall enough.

[RasselFlassel13]

I've look into frankstein mod be for and its so hard to find either 720 or 620. As I have only ever seen one 620 which was my buddy who I got the 720 from. Who gave up on dat as well. Seen probably six 720 driving. I have try to buy everyone. There alway wiser gentlemen who know they got something special.

And not one in a junkyard yet.

I believe I could find a KA a lot easyer. But rather not deal with efi without a megaspirt. As I aready have a KA turbo manifold for the Z. And all my turbo parts except the blow though carb.

That kinda why I'm at a crossroad here on how to go about getting the truck going again.

[flatcat19]

Why do you need a mega squirt when it already works with everything the KA comes with?

 

Buy a Can-Am box, compete swap...done.

 

And it will bolt right in to your 720.

[Lockleaf]

Carbing the KA is another option. Get a d21 ka, slap a carb on the throttle body manifold, and swap the KA distributor and oil drive spindle out for those parts from your Z24. Only use 1 set of plug wires. Maybe a couple other small changes and you're there.

[datzenmike]

Farmer Joe? from Idaho? Runs a weber on a KA24DE.

[RasselFlassel13]

A carbed ka sound awesome imma start looking around for one . But I do have a head now as my exhaust manifold just cracked in half on my 4x4 so imma rip it off and slap her on for now

[datzenmike]

If you do not know about blocking the timing chain tensioner STOP RIGHT NOW!  and save yourself 4-6 hours of extra work.

[RasselFlassel13]

Indeed it'll be the fourth time I take the head off

[datzenmike]

Hey, just lookin' out.

[Skib]

Hey, just lookin' out.

 

 

lol most of us have done it at least once :rofl: