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conedodger

Just Another Damned Z Car Project Thread

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On 9/10/2020 at 2:52 PM, conedodger said:

What is the thread size and pitch for the intake bolts on the head? Head is an E31. I want to clean threads...

Probably figured this out already, but M8x1.25.

 

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On 9/1/2020 at 2:10 PM, conedodger said:

Here is the N42 intake mocked up. I may need a different header as I see the intake and exhaust share studs. Been a long time since I've had a 280Z! 

Also, has anyone mocked up a drawing for a heatshield? I can plasma cut it but it would be easier if I didn't have to duplicate someone's already done work?

IMG_1298.jpg

Just have examples.I can measure something

39AFB931-F221-42B0-BC50-5EDE8F2926B2.jpeg

97CF83A1-38CD-43C2-A7F8-CABFC282A4BF.jpeg

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I'm at the point where I need to figure out how I will secure the injectors to the manifold. Since they aren't the original injectors, I can't use the original mounting method, what to do? I had a conversation with my architect son this morning about it, and he asked how it originally mounted. I found an image on the internet and he said, I can 3D model a 2 piece collar that uses the original mount to hold the injector in place.

But first thing first, The injectors do not fit in the stock manifold hole. So, I went to my buddy Rex who is a machine shop manager and a Datsun guy, he will remachine the injector ports to accept the Green Giant injector. The injector has two grooves for o-rings where the injector body enters the intake. I will double them up to make sure there are no leaks.

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Since the fuel rail has to be rigidly mounted anyway, wouldn't it captivate the injectors so they wouldn't need clamping at the manifold ports?

 

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46 minutes ago, ETI4K said:

Since the fuel rail has to be rigidly mounted anyway, wouldn't it captivate the injectors so they wouldn't need clamping at the manifold ports?

 

One would think that the fuel rail would do the trick, but...

The Bosch Green Giant injector goes in to the hole but the bore is too small for it to get any further than the entry. Essentially, using just the fuel rail would allow a big vacuum leak without doing this.

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Lots of engines use the rail to hold the injectors in place, but all the parts used need to be designed to be used that way.

The holes in the manifold need to be sized correctly for the O-ring on the nose. The holes in the fuel rail need to be sized correctly for the O-ring on the tail. And the distance between the manifold and the fuel rail needs to be correct. If those three things are achieved, there's nothing wrong with using the fuel rail to hold the injectors in place.

Of course... The current engine does none of these. Boring the manifold out to accept the Green Giants, is just one necessary step.

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The Captain is correct. I think it will be much easier to fabricate a mount for the rail that makes the rail the proper distance... 

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On 9/17/2020 at 10:35 AM, conedodger said:

@duffymahoney, I'm thinking of using the AEM smart coils that were tested as the hottest in the test you cite on your thread. Where did you get your coil mount? 

I designed and made my own coil bracket based off of blakes.  

 

Here is the info. 

 

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Well, that's interesting. I've got to make sure the hood release cable is still available before I cut her little head off. I can probably make one using bicycle shift cable, but I'll check with MSA first.

IMG_1485.jpg

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why do you need to cut the head off? I would take a flat head and pry it open

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1 hour ago, Patcon said:

why do you need to cut the head off? I would take a flat head and pry it open

She's somewhat resistant to opening back up. I'm trying though. I have to get it off though because I plan to replace the female portion, heck, both the hood and firewall side with newly plated latches. Just have to find some...

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22 hours ago, conedodger said:

She's somewhat resistant to opening back up. I'm trying though. I have to get it off though because I plan to replace the female portion, heck, both the hood and firewall side with newly plated latches. Just have to find some...

You just need to win that one. They crimped it so it should come uncripped

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Well, I won. But it took more than a flat head and it pretty much destroyed the female side of the latch... Oh well!

IMG_1487.jpg

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I can help plated hood latch parts if you’d like...

 

image.jpg

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zKars, 

Do you have a website or do you sell them in the classifieds? All of this delay putting the motor in is because I'm refinishing the engine compartment. I suppose I could have tried to clean it up, but since the old engine was out, I just started going after it a section at a time. I soon found out how tedious it is. I'd rather repaint the exterior anytime! 

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I do nothing of a commercial nature. When I see needs, I attempt to help. I have a good plater here and built a good relationship.

Send me a PM and we can see if I can help with your project.

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1 hour ago, zKars said:

I do nothing of a commercial nature. When I see needs, I attempt to help. I have a good plater here and built a good relationship.

Send me a PM and we can see if I can help with your project.

Thx, will do...

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I've been hesitant to pull the brake lines apart. When you do anything in a restoration, you risk the part not being available and in the case of brake lines, you might have to make them. That is possible as the tools and tubes are available. In fact, I think I've had a rudimentary flaring tool in my stash since the 1980's. A remnant of working for my uncle at his gas station before going to school and learning to put people to sleep and keep them pain free while a sadistic bastard cuts them up. I guess that makes me complicit doesn't it! But yesterday, I watched a video of a guy named Francisco Gutierez as he put in new brake lines in his Z. I checked his source which I had to determine by looking at the box as he tried to dump the contents out. Turns out the tubes are available and they are $329.99. So I called and heard the sweet sound of her yelling "order up." Know your date and year of production. I think they have 3 different tubing sets available for the Z. Pretty sure Francisco is a member here. His channel is Panchos Garage.

https://Classictube.com

Edited by conedodger
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