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Upgrading a '74 Datsun 120Y (B210)
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Hello everybody! The last project failed as I ran out of time and money, and had to sell it. I paused my Dat plans for some years, but as I got hold of a parts car for free recently, the interest has re-sparked.

I'm currently the lucky owner of a 1985 C120 Vanette, A15 powered, with 80-82 hp. Complete with rear axle, which I believe is an H165? (The A15 powered Vanette didn't come with the H190?)

I know of a B210 / 120Y from late 1974 which probably has the 56A gearbox, which I believe is strong enough to ride around town stock with - without performance upgrading the engine. The stock diff from the B210 (H145??) will probably not hold, so can the '85 C120 Vanette diff be swapped into the B210 / 120Y and keeping the 56A box?

I have the A15 powered Vanette in its entirety, but it's very rusty, so it's about to be scrapped. But I'd like to know if I can use its engine and drivetrain in a B210 / 120Y from late '74? :)

I'll be glad to hear from you Datto-lads!

Lars, Norway

Posted on: 2016/7/13 16:16
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Re: Upgrading a '74 Datsun 120Y (B210)
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welcome back lars

The axle type should be listed on the ID plate, usually in the engine compartment (C=H165, F=H190)
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The 56A gearbox is strong enough for torque of an A15. It is far stronger than the original 56L 4-speed

Late 1974 should be fitted with the H150, which is used for A15. It was fitted starting August (?) 1974. In any case the C120 rear axle assemble can be swapped, but is likely considerably wider. 120Y is 1305 mm drum-to-drum
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Posted on: 2016/7/13 21:55
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Re: Upgrading a '74 Datsun 120Y (B210)
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You, sir, are an oracle. Thank you! You think the 150 would handle daily driving, yeah? I kinda want the extra 25 hp from the A15, yeah. :)

Posted on: 2016/7/14 18:49
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Re: Upgrading a '74 Datsun 120Y (B210)
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indeed, the A15 (80HP) has 17% more HP than the A12

Like that time you cut an A15 in half? More than it appears

Posted on: 2016/7/14 21:28
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Re: Upgrading a '74 Datsun 120Y (B210)
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So, I bought the 120Y today. It's in near pristine condition. Got a New respray some years ago, never been driven in the Winter. Its first-time registration in Norway is mid-october 1974, so I Guess it's got the H150 axle, then? And the newer, stronger gearbox 56A, I suppose. Haven't really had the time to look yet, this just recently happened.

Anyway, I'm hoping it will be A15 Powered soon! :) Super stoked, today was a great day!

Link to Picture: https://images.finncdn.no/dynamic/1600 ... /787/009/40_820263829.jpg

Posted on: 2016/7/18 9:53
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Re: Upgrading a '74 Datsun 120Y (B210)
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Wow it is a 2-door sedan, Yellow. Congratulations

Posted on: 2016/7/18 10:10
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Re: Upgrading a '74 Datsun 120Y (B210)
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Thanks. :) It's gonna be a lot of cruising.

But I couldn't make out that part in the last post where you said I cut an A15 in half??

Posted on: 2016/7/18 11:37
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Re: Upgrading a '74 Datsun 120Y (B210)
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1: Since the A15 is coming out of a Vanette C120, It's okay to use both manifold and the small top hat air cleaner that came Stock With the Vanette, right?

2: I was thinking about converting it to Electronic ignition, someone has a link for a Complete kit I can buy online to do this? Also thinking of a powerfilter and a slightly larger exhaust than the original. Which brings me to;

3: Can I bolt the Stock 120Y / B210 1200 exhaust up to the A15, or do I need exhaust parts from the Vanette as well?

4: Finally; Can I reuse the 110.000 km radiator from the Vanette in the B210? Will it fit? Or do I have to buy a New one?


I'm excited to hear Your replies.

Lars

Posted on: 2016/7/20 7:53
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Re: Upgrading a '74 Datsun 120Y (B210)
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Sorry about the cut A15, it may have been another 120A/Cherry owner. There are photos of it here on Datsun1200.com


Quote:
1: Since the A15 is coming out of a Vanette C120, It's okay to use both manifold and the small top hat air cleaner that came Stock With the Vanette, right?
Yes


Quote:
2: I was thinking about converting it to Electronic ignition, someone has a link for a Complete kit I can buy online to do this?
OK, stock Datsun/Nissan electronic ignition is more reliable that point ignition, but it won't add any power. Chinese brands may or may not be long-term reliable


Quote:
Also thinking of a powerfilter
Some look quite good, just note it won't add any HP over what a brand new stock Nissan filter will do


Quote:
a slightly larger exhaust than the original.
Stock exhaust pipe is 1-1/2 inch diameter. Next size up is 1-3/4 inch, which will be slightly more aggressive sounding. The muffler has the biggest effect on sound


Quote:
3: Can I bolt the Stock 120Y / B210 1200 exhaust up to the A15, or do I need exhaust parts from the Vanette as well?
Yes, all exhaust manifolds bolt to A15 cylinder heads. The A15 manifolds are larger internally than A12 units though the same exterior size/port size


Quote:
4: Finally; Can I reuse the 110.000 km radiator from the Vanette in the B210? Will it fit? Or do I have to buy a New one?
Unknown. 110000km is fairly low use, but what are its dimensions? 120Y can take large radiators, A14 power B210 was fitted with medium or large radiator, but 120Y uses small radiator

I think 120Y uses this dimensions
* Overall dimensions 465mm tall & 381mm wide including brackets. Tall dimension is to top of radiator cap.
* Core dimensions (width x height x thickness) 330 mm x 344 mm x 32 mm
* Bolt spacing: 368 mm wide x 251 mm high (~14.5" wide and 9-7/8" high)
• Inlet and outlet diameter: 1" (25.4 mm) I.D. (1-1/8" O.D. including nipple)

But 120Y can bolt-in wider radiators, including stock wide units. And there is enough space to fit inexpensive alloy (VERY LARGE) Pulsar N14/N15 units

Posted on: 2016/7/20 10:21
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Re: Upgrading a '74 Datsun 120Y (B210)
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Answer to question 1. You can still use the standard A12 air cleaner.

2.'Pertronix Performance Products' do electronic ignition kits for A
series. Ignitor no: 1741 http://www.pertronix.com/catalogs/pdf ... ptx2015_ignition_conv.pdf

3. A12 stock exhaust manifold uses a 2 stud outlet and A15 uses a 3 stud. I
would cut a section off the A15 exhaust to manifold pipe as you
need the flange to bolt it up to the exhaust manifold.

4. Standard 120y radiator if in good working order will be fine.

Posted on: 2016/7/20 10:21
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