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CG240Z

1970Z Restore Thread, Let the Fun Begin!

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Picked up a 1970 240Z that my aunt and uncle gave to me a few months ago and have been working on it quite hard ever since. It was my aunt's first car that she got in 1973 and she has had it since. 11 years ago a connecting rod put a baseball size hole out the side of the block and it has sat in their garage since then. I gladly took it off their hands and the project has begun!

The plan is to do a engine, trans, and rear end swap in it. I already picked up a 1979 ZX that I took the complete drivetrain out. The body was junk but the drivetrain was good. Got a buddy going over the trans and rear end for me pops is doing a complete rebuild on the engine. Also ditching the fuel injection, going to dual Weber carbs, bigger cam, and headers. Body and paint are in surprisingly good condition, so that will be the last thing I tackle. Right now I'm focusing on drivetrain and getting her back on the road.

This is the car the day I picked it up. Drove 15 hours each way to get her.

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Right away I snatched the engine and trans out.

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I'm thinking this is why the engine wasn't running right.

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All the wiring on the car is atrocious, it's poorly spliced and random butt connectors everywhere. The engine harness is going to need to be replaced and the dash gone over. So I pulled the dash. Hopefully I'll be able to get it back in one day. haha

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Engine bay had a few coats of grime and paint on it. It was looking pretty rough.

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Decided to start fresh, so I had the engine bay soda blasted. Unfortunately I'm working out of 2 apartment garages so I don't have anywhere to blast, but it was only $150 and it came back awesome. Couldn't be happier with the results. This is the engine bay just bare metal.

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Also picked up a cabinet blaster from Harbor Freight so I decided to test it out. Blasted, primed, and painted the brake booster and horns. Cabinet worked great and the parts came out great. Did this while I was waiting on the engine bay to get blasted.

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Had yesterday off so I spent the day taping up and priming the engine bay. Once again, I think it came out great.

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Next step is to lay the color down, but paint store is closed on Christmas, so that will have to wait until tomorrow. Just going with a satin black. I know it's not correct because it's not color matching, but I'm not sure what color the car is going to be so I'm just going to lay black down. I can always change it later.

After painting I will be working on the rest of the front end. Basically right now I'm working firewall and forward. Already have all the parts so I'm just working on it step by step. Picked up 4 piston calipers, slotted rotors, Tokico performance struts, eibach lower spings, bigger MSA sway bar, all new bushings and a few other things. It's really going to make the car pop. I'm taking my time working on the car and enjoying every minute of it. No need to rush since I don't have anything else to do. Merry Christmas too guys!

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Great looking project and great car fixing weather here in texas. I think I have a brand new never installed engine bay harness for your car if you need one.

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It is great weather and I do need an engine harness. I'll send you a PM.

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I have considered triples, but I already have the webers off the original engine. I guess once I get it running and if I don't like the carbs I'll look into triple options.

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Have the left strut assembly pretty much all put back together. Waiting on the lower ball joint which should be here by Friday. Also still getting my butt kicked the control arm. I'm trying to get the inner sleeve out so I can fit the new bushings in.

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Tokico strut, eibach lower spring, slotted rotor, 4 piston caliper.

This sucker is pretty heavy, def not making the vehicle any faster, but I'm hoping she'll stop fast.

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The hardest part for me was getting the inner sleeve out of the outer rear control arms. I heated them until they were purple with oxy/acetylene torch, cut them down the middle with hacksaw, and still had to beat and peel them out. Had 1 person heating while the other was pulling and beating on it. Have fun with it...always fun seeing it go back together.

Brian

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Nice work and nice that she's been in your family this whole time.

I'm sure she will be a great car!

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The hardest part for me was getting the inner sleeve out of the outer rear control arms. I heated them until they were purple with oxy/acetylene torch, cut them down the middle with hacksaw, and still had to beat and peel them out. Had 1 person heating while the other was pulling and beating on it. Have fun with it...always fun seeing it go back together.

Brian

Amen to that. The fronts were nothing like the rear. I have no idea why they were so tough. They were much harder than the spindle pins.

CG, great looking assembly. Better than new. Keep it going.

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Looking great CG! Give some thought to replacing the steering rack bushings while you're that deep as well.. It'll be much easier with the engine and most of the front suspension off as you have it now. Oh and be sure and install some bump-steer spacers as well since you are lowering the car. They're a common (and fairly cheap) addition when lowering the car to help preserve the original suspension geometry. You can find them at Motor Sport Auto (MSA).

I ran the dual Weber DGVs on my 260Z for several years. I had a hard time getting them to run right, I hope they work out better for you..

Keep up the great work!

Tom

Edited by Rainman

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I have steering rack bushings in a box waiting to go. I found a crack in my steering rack and am in the process of picking another one up from a fellow forum member. And thanks for the heads up on the bump steer spacers, haven't heard of those.

Hopefully these carbs will run well, right now I'm just using them because I have them. If they don't turn out so well when I get the car running I'll look at other alternatives.

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Got my buddy to pop my trans open and inspect it. I don't really know anything about the internals of a transmission. Going to replace some bushings and seals in it. It's going to be nice to have a 5spd in this.

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Tear down on the engine continues...

Pushing the pin out of the rods.

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Hot washing the block. It was filled with old crusty oil, apparently the previous owner didn't believe in changing the oil.

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Also magnafluxed the block to look for any cracks, no cracks found.

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Just got off the phone with Z Car Source, master engine kit ordered with newer flattop pistons, should be in next week. Hopefully this engine will shape out to a mean 6cyl.

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More progress being made to the engine, got it all bored and honed out. Bored it .26, then honed it out the rest of the way to .30.post-25778-14150817844512_thumb.jpg

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Man oh man, it's been awhile. Unfortunately I just ran out of steam and energy for this project....But I'm back at it and hopefully in full force. Over the weekend I finished up the front suspension and rolled the ol' car out of the garage to wash it. The plan for this weekend is to drop the engine/trans in and switch out the rear end to a R200. I have a billet mustache bar coming in the mail from Arizona Z Car, pretty excited about that. Still lots of work to be done before I'll be behind the wheel driving, but hopefully soon.

New (to me) Rack and pinion, adjustable control arms, Eibach lowering springs, slotted rotors, and 4 piston calipers. Still need to put the MSA sway bar on.

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Rolled the car out, (can't remember the last time it's been on all 4 wheels), and gave her a bath to get all that garage dust off.

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Also got the clutch in today. You know, I was looking at all these performance clutches like Centerforce, etc. The pricing on them are pretty high and I bet they are great clutches. Realistically though, I'm building a weekend cruiser 240 with a 280 engine in it. I'm not going to be pumping out any crazy horsepower, so for $100 I got Autozone's finest Duralast clutch. I've put them in other cars and never had a problem. If it doesn't work well, I can always switch it out later on.

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