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New 320 owner, 62?


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#41 Stoffregen Motorsports

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Posted 01 July 2016 - 07:14 AM

Boy, that's a tough spot you're in. I honestly don't know how to tell for sure what you have. I guess you could unhook the gauges for now, wire it negative ground and run it. Once you've figured out the gauge thing, then hook them back up.

 

Call The Gauge Guys (APT Instruments) http://www.gaugeguys.com/. They will be able to help guide you.



#42 320 Newb

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Posted 01 July 2016 - 10:15 AM

So we just went for it... We hooked it up positive ground and started it up. It ran but pretty quickly smelled burning and shut it down. We hooked it back up negative ground and it turns over but won't start. The coil heats up crazy hot so I think we fried it by running the current backwards. I just picked up a new coil and hope it does the trick. Anything else we likely fried by running the current the wrong way? 

 

Wheel cylinder question... Any chance wheel cylinder from a 520 or 620 fit the 320? My brother who just did the brakes on his 620 swears they're identical. Would the brake shoes from a 520 or 620 fit a 320?

 

Last question... There's no coolant reservoir, just a rubber hose that spatters out into the engine compartment when it heats up. Does anyone have a picture of where/how the reservoir mounts? Also anything I need to know about flushing the system?

 

Finally found the original VIN, definitely a '62 and looks like maybe # 568 off the line:

VIN.jpg



#43 Stoffregen Motorsports

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Posted 01 July 2016 - 10:49 AM

Tough call, but you had to do it.

 

The 520 wheel cylinders may fit, but I think the bore size is different. Not all that bad of a problem though. The size of the piston is usually cast into the cylinder body, but if it's not, you can easily verify it by removing the dust seal and measuring the bore. The later wheel cylinders most likely use metric threads, while the early wheels cylinders use SEA threads.

 

One mod that I would highly recommend is a dual circuit master cylinder. Get one from a 510 and bolt it up and your brakes will improve and be safer.



#44 320 Newb

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Posted 02 July 2016 - 08:54 AM

The auto parts store had a 620 wheel cylinder and it fit! The threads on the center (hollow) bolt fit, but the threads on the four mounting studs are different than the stock nuts. Stoffs I'd imagine you're right the 620 studs are metric and the 320 nuts are SEA. I'm going to take it to hardware store, find the right nuts, and should be set! 

 

Also I replaced the coil, hooked up the battery negative ground and she runs! We had a blast driving it around the neighborhood figuring our the shift pattern. I'm shocked at how peppy she is and 4th gear is a dream! 

 

Next up, finish the breaks, install a new thermostat and coolant overflow, and drive her around some more! Oh and maybe bolt down the seat and install seat belts. 



#45 Stoffregen Motorsports

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Posted 02 July 2016 - 09:32 AM

Be careful of the brake line threads. I know positively that the 320 cylinders use 3/8-24 threads on the brake lines. I also know that a 3/8-24 brake line nut will thread into a 10mm x 1.0 hole, and it will even tighten a bit, but it is not right and will strip or leak.

 

If the 620 has metric mounting holes, chances are it also has metric threads on the line inlet. Verify it by using a 10mm x 1.0 brake line (auto parts store if you don't have one) and try to thread it in. If it goes, it's metric. The 10mm fittings are larger than the 3/8 so the 10mm won't thread into the 3/8, but the 3/8 will thread into the 10mm.



#46 Toybomber

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Posted 02 July 2016 - 09:59 AM

No need to replace the lines..... Just use the original bleeder housing at the back of the cylinder .... Lines still attached... If the "hallow bolt" or the banjo bolt threads smooth and clean..... Which it should .... Then ur golden

#47 Toybomber

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Posted 02 July 2016 - 10:01 AM

Also..... It's not that hard to replace all the lines with fresh ones........ Add about another $100-150 if you go that route

#48 Lockleaf

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Posted 02 July 2016 - 10:05 AM

Edit nevermind

Half Pint ('71 510 Goon) http://community.rat...agon/p?=1269361

 

Audrey ('69 Roadster 1600) http://community.rat...rey-the-ratster

 

Tiny Havok ('85 720 DIY built Crewcab 4x4) http://community.rat...ache/?p=1395455

 

720 Shenanigans http://community.rat...20-shenanigans/


#49 Charlie69

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Posted 02 July 2016 - 01:29 PM

620 brake parts are 10mm x 1 metric thread and the stock 320 brake parts are 3/8" x 24 SAE thread.

 

You will need to get an adapter or cut the hard line, remove the 3/8" x 24 SAE nut and replace it with a 10mm x 1 nut, then redo the double inverted flair on the end of the hard line.



#50 Stoffregen Motorsports

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Posted 03 July 2016 - 09:17 AM

Yes, there is a banjo fitting on the 320, thank you guys for pointing that out. In that case, you should still be able to use the 320 banjo fitting, but you will need a metric banjo bolt to fit it to the 620 wheel cylinder.

 

I think I have a few of those banjo fittings left over. If I can find one, I'll snap a pic later today.



#51 wayno

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Posted 03 July 2016 - 11:52 AM

I have done this to my 320, I used the 620 rear wheel cylinder/banjo bolt using stock 320 banjo fitting/copper washers.

Yes, there is a banjo fitting on the 320, thank you guys for pointing that out. In that case, you should still be able to use the 320 banjo fitting, but you will need a metric banjo bolt to fit it to the 620 wheel cylinder.

 

I think I have a few of those banjo fittings left over. If I can find one, I'll snap a pic later today.


 

 


#52 320 Newb

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Posted 04 July 2016 - 08:33 PM

If anyone's looking for break hoses these came off the shelf at Napa (part number 16766)  and are a perfect fit:

https://www.napaonli...h?text=UP 16766

 

They're not listed in the NAPA computers for Nissan/Datsun but my little brother went in the back and rummaged through boxes and found them. We tried them out today and they're a dead ringer. 



#53 Stoffregen Motorsports

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Posted 05 July 2016 - 02:53 PM

Are the front and rear 320 hoses the same? I forget.

 

When I replaced mine, the ones I ended up with were from a late 50's Chevy truck.



#54 320 Newb

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Posted 05 July 2016 - 09:21 PM

The rear hose is 18" and the fronts are about 12". The listed hose above is 16" and fits both front/rear but there is an 18" hose off the shelf from NAPA as well. My brother picked one up today and I'll post up the part number tomorrow. 

 

The computer systems in auto parts stores suck terribly. Unless you've got someone at the counter that knows cars, which almost never happens, you're sunk. 



#55 difrangia

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Posted 06 July 2016 - 03:19 AM

If you have an older parts store in the area, they sometimes have old catalogs for the major manufacturers that list hoses by length and fittings on each end. Sometimes you can find what you need in one of these. The modern chain stores, all too often, (not all) have a kid on a computer that doesn't know a Datsun from a Deusenberg.  Brad at hosestop@msn.com (member on here in So. Cal) made a perfect replacement clutch hose for our 320 about a year ago at a super reasonable price..

 

Steve 



#56 Stoffregen Motorsports

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Posted 06 July 2016 - 08:43 AM

 

 

The computer systems in auto parts stores suck terribly. Unless you've got someone at the counter that knows cars, which almost never happens, you're sunk. 

 

I was in the local NAPA a few weeks ago, looking for an obscure part, and the person was fumbling the search. I asked her if she ever uses the internet to help her search. She said the store operators don't allow them to access the internet while at work.

 

I can see the logic behind that, but when a customer standing in line can pull up the correct part number on their iphone, before the employee gives up, it's pretty clear to me that their system sucks, and that the store managers should allow the counter clerks to utilize the internet if they need to.



#57 Lockleaf

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Posted 06 July 2016 - 09:50 AM

There are a large number of potential legal liabilities that come up with open internet access in a work place. Lots of places simply prefer to not have to deal with those, even if it potentially affects customers. And frankly most customers who ever think parts guys should use more internet are also capable of using the internet and giving the parts guy info to interchange or cross reference.

Half Pint ('71 510 Goon) http://community.rat...agon/p?=1269361

 

Audrey ('69 Roadster 1600) http://community.rat...rey-the-ratster

 

Tiny Havok ('85 720 DIY built Crewcab 4x4) http://community.rat...ache/?p=1395455

 

720 Shenanigans http://community.rat...20-shenanigans/


#58 Stoffregen Motorsports

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Posted 07 July 2016 - 08:37 AM

Yeah, and that sucks too.

 

Invest in your employees and you'll get a good return. Treat them like dogs and you're sure to get bitten.



#59 320 Newb

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Posted 22 July 2016 - 02:21 PM

Does anyone have any spare 320 parts? I'd be interested in purchasing a pressure tested radiator, tail light and turn signal lenses, and front parking light lenses. 

 

The project is coming along slowly. Got the truck running and driving with functioning breaks but a pinhole appeared in the radiator. On further inspection it has some old repairs on it. 



#60 Charlie69

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Posted 22 July 2016 - 10:04 PM

Take the radiator to a shop and see if the core is repairable before you buy another' 60 year old radiator.