620 KC project

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Edm620
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Location: Edmonton

Re: 620 KC project

Post by Edm620 »

Thanks for the feedback. If you're comfortable with the restrictions you can drop by as I'm "self-isolating" daily in my garage which is helping me get stuff done. I'm trying to do some future planning regarding the engine, I have most of the key parts on hand for the Z2.4 engine rebuild but my future plan is to have about 300HP on tap.
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demo243
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Joined: 19 Dec 2012 18:55
Location: Topsfield MA

Re: 620 KC project

Post by demo243 »

Edm620 wrote: 25 Mar 2020 22:42 Floor rot isn't uncommon, I'm going to have to do some lower body rebuilding once I get to that stage. The rockers were pretty much rotted through and I did see some re-pops listed on Ebay long ago but I didn't buy then, guess I should have. Pretty much anything mechanical is easy enough to find though. What are you planning to do with yours?
Pretty much run it as you see it!

Brought it home with a KA in the bed and it was pretty torn apart. Trying to keep it a bit on a budget... Redid all the wiring, got it running, built a dash as the stock one was totally cracked, gross and I was missing the bezel.. Plan is just to drive the hell out of it! My 510 is fun, but so much of a race car essentially now that it can be kinda boring/rough to just cruise around it... so this fills the void of a fun summer daily, errand runner, dump run truck... etc...

Got a build thread going over on Ratsun if your bored...
https://ratsun.net/topic/76075-orange-whip-78-620/

At this point just working on a few minor things and then Ill just take care of stuff as it comes up. Got a few hundred miles on the truck already.
'71 4 Door - Street/AutoX/Track Day Romper - Carb'ed KA24DE
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Edm620
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Location: Edmonton

Re: 620 KC project

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The blessing of the pandemic - I have even more time on my hands to work on my truck!
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Daily progress continues, achieved a milestone yesterday.
"If you don't know where you're going, any road will take you there"
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Edm620
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Location: Edmonton

Re: 620 KC project

Post by Edm620 »

Anyone have a factory wiring diagram for the 720? The Haynes manual does not show the wiring for the electric fuel pump even though it talks about it for service.
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Byron510
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Re: 620 KC project

Post by Byron510 »

Pat, I have a factory manual for an 82, it I think your doner was an 86, correct?

It sure if it’ll help, but I can check.

Byron
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JordanTr
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Joined: 20 Feb 2013 22:27
Location: Kimberley, BC, Canada

Re: 620 KC project

Post by JordanTr »

Have a look here. Maybe the 720 manual has what you need.

https://www.nicoclub.com/datsun-service-manuals
'72 2 door KA project | S14 Silvia RB25DET | S14 RB26DETT (sold) | '90 Audi 90Q20V (sold)
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Edm620
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Location: Edmonton

Re: 620 KC project

Post by Edm620 »

Thanks guys, I was able to download a factory manual for an '86 (Byron was correct on year) so I'm happy. The wiring seems to have changed frequently during the production run on this model truck, mine was equipped with SOME of the components for the factory cruise control but missing some pieces. Weird.

I know the Japanese method of building a single wiring harness was common (for example instead of making 1 harness that included AC and 1 that didn't) but actually having only some components was strange. Since my donor wasn't a running vehicle and some wiring had been butchered, I wanted to sort through and test before I transfer the harness into the build (and eliminate unnecessary circuits while I'm at it).
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Edm620
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Re: 620 KC project

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No photos but I've been busy with the engine rebuild - getting the block back from the machine shop today. Over the next few days I'll be doing some porting then reassembly and installation into the chassis.
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Edm620
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Re: 620 KC project

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Busy spending some quality time with my die grinders, getting the porting done. Takes a consistent light touch
first 2 intakes
first 2 intakes
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Edm620
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Re: 620 KC project

Post by Edm620 »

Head porting completed today, the exhaust ports were amazingly undersized.

Time now to focus on the valves...
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"If you don't know where you're going, any road will take you there"
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Edm620
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Re: 620 KC project

Post by Edm620 »

Park brake cable situation is resolved, I shortened the housing on one that was excessively long and all is good now, still need to attach the retainer at the end once I determine the final length of the cable itself.
Left park brake cable, custom length
Left park brake cable, custom length
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Now I can return to the engine work. :P
"If you don't know where you're going, any road will take you there"
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Edm620
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Re: 620 KC project

Post by Edm620 »

Engine assembly is well underway, have been taking a bit of a break from spending all my free time in the garage as the back yard has been calling my name! Got the head completed today though and plan to have the engine completed by end of the coming week.
"If you don't know where you're going, any road will take you there"
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Edm620
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Re: 620 KC project

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Engine is almost ready to be installed, sorting out emissions fittings etc.
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She was named jointly by my wife & I
Named
Named
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"If you don't know where you're going, any road will take you there"
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Edm620
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Re: 620 KC project

Post by Edm620 »

Thought I'd share this article on my project that was just published:
https://driving.ca/nissan/column/on-the ... an-620-720
"If you don't know where you're going, any road will take you there"
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Edm620
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Re: 620 KC project

Post by Edm620 »

Time for an update, as I've been working steadily on the truck and have been making progress. Rolled the chassis out into the sunshine today as I needed to shuffle things in the garage as I should soon be getting the body fitted back up.
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I am expecting a number of things to require modification to fit the 620 body up, such as the steering box is on the outside of the frame, possible interference where the PS lines run, and oddball stuff like the wiper motor will now mount in the engine bay instead of under the dash.
"If you don't know where you're going, any road will take you there"
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