1986 Nissan 720 king cab full restoration

[builte]

From now on I'll only be posting here as I am posting too much about my truck all over the place 😂 right now my on question is, is there a Weber carb that will fit my truck it's a 1986 Nissan 720 king cab automatic transmission datzenmike has informed me that it is not efi but is ecc 

[builte]

[Stoffregen Motorsports]

Nice. Now easier to follow.

 

I don't know anything about stock carbs, but that looks suspiciously like a standard Hitachi bolt pattern.

 

Anyone?

[datzenmike]

Take the carburetor off and look at the stud pattern. The Z24 carb is different than the earlier Z22. Instead of rectangular pattern it's trapezoid.

 

This is the distance between the secondary studs on a Z24 intake compared to the L20B... which is also the same as the Z22.

 

 

Here's a Z24 carburetor on an L20B intake and hoe much was ground away to make it fit.

 

[builte]

4 hours ago, datzenmike said:

Take the carburetor off and look at the stud pattern. The Z24 carb is different than the earlier Z22. Instead of rectangular pattern it's trapezoid.

 

This is the distance between the secondary studs on a Z24 intake compared to the L20B... which is also the same as the Z22.

 

 

Here's a Z24 carburetor on an L20B intake and hoe much was ground away to make it fit.

 

I'm gonna do that tomorrow afternoon I'll be stripping down the engine to clean it and gauge in the cylinders

[builte]

I'll post pics 

[EDM620]

8 hours ago, Stoffregen Motorsports said:

that looks suspiciously like a standard Hitachi bolt pattern

More than just suspicious, that looks exactly like the stock Hitachi. I expect that right below the carb is a black plastic riser with an electrical connection - that is the carb warmer. You can easily get a carb rebuild kit for the Hitachi

[builte]

58 minutes ago, EDM620 said:

More than just suspicious, that looks exactly like the stock Hitachi. I expect that right below the carb is a black plastic riser with an electrical connection - that is the carb warmer. You can easily get a carb rebuild kit for the Hitachi

The truck Is completely stock ATM except the alternator which I am rebuilding it's original 

[builte]

And yes I can get a rebuild kit I will not be getting rid of the old carb for this reason but I would like to do away with most of the vacuum lines because 🤮 they're gross so that why Im interested in a Weber carb I will be posting pics of the tear down tommarow 

[builte]

Anybody have a good ball hone they'd recommend for the z24 cylinders?

[datzenmike]

Cylinder wall finish depends on the rings you plan to use and if the cylinders were machined over size.

[builte]

Original sized rings if possible 

[builte]

Well I'm gonna be holding on photos of the teardown cause there isn't a single place we're I live that sale bore mics

[datzenmike]

Well if just a quick hone 'n ring job then get the softer cast iron rings. Chrome rings need a more perfect round non taper bore. Don't forget most of the wear is at the very tops of the bores. 

[Stoffregen Motorsports]

5 hours ago, builte said:

Anybody have a good ball hone they'd recommend for the z24 cylinders?

Go to Summit Racing and search for ball hone. You can get them for about $25.

 

As for what grit to use... Stolen from the web -

 

 

EDIT -  I just realized this quote was referring to honing stones, but I do remember that the product listings show the grit.

Edited September 1, 2023 by Stoffregen Motorsports

[builte]

Ok awesome great information from both of you I really appreciate it I'll get the stuff ordered and post more when I can tommarow I'll pulling the engine regardless to post pics of the carb 

[Stoffregen Motorsports]

Oh, also, the right rhythm is needed when honing. I use a one-oun-thou-sand count. One-one on the down stroke, thou-sand on the up stroke. Use WD40 for lube and use low speed on the drill.

[builte]

Ok awesome for how long would you recommend?

[builte]

Also what diameter would the ball hone need to be I'm just trying to do a cleanup and new rings nothing extensive atm.

[Stoffregen Motorsports]

You can squeeze a "too-big" hone in any cylinder, as long as it's not too too big. I can't advise there. Maybe grab one for the "right size" and see how it feels.

 

Ten or twelve strokes on each bore is all that it should take.

[builte]

Ok cool I'll have to measure the cylinders then when I get the head taken off to get an idea of what I want thank you.

[builte]

2 hours ago, datzenmike said:

Well if just a quick hone 'n ring job then get the softer cast iron rings. Chrome rings need a more perfect round non taper bore. Don't forget most of the wear is at the very tops of the bores. 

Do you know if dnr rings are iron?

[EDM620]

9 hours ago, datzenmike said:

get the softer cast iron rings

The softer rings will seat in faster

[builte]

6 hours ago, EDM620 said:

The softer rings will seat in faster

That's the plan do you know if dnr sales cast iron rings?

[builte]

Dnj*