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kosjubrmod View Drop Down
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Joined: 23 Aug 2014
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kosjubrmod Quote  Post ReplyReply Direct Link To This Post Topic: Hi!
    Posted: 23 Aug 2014 at 5:23pm
1982 Datsun 720 pickup, 2.2l inline four cylinder diesel, naturally aspirated indirect injection, two-wheel drive with five speed manual. No Ac, No Power Steering, manual locks, manual windows, sliding back glass.

Goals: Unique Daily Driver, fuel milage

Picked the truck up from a guy outside of Jackson, TN back in May with 221,000 miles.  Blew the head gasket within a hundred miles, and have been rebuilding it since.  Have it running these days, but I'm burning through oil like crazy.  Suspect I'll have to do the bottom end rebuild next.  

Truck is in decent condition for its age.  All original with the exception of the rims, and I see no reason to change that. It has been sitting for a few years.  It has an inspection sticker from Mississippi in 2004, and the title I received was from when it was transferred to TN in 2008.  Most of the issues I've been running into are just from it sitting I think.  Slowly, I'm going through and doing what I can to correct that.  Next up is transmission and differential fluids; and cleaning gunk out of the fuel tank.

Im not planning on lowering it any more, or putting a turbo on the diesel.  Just want something to use to putt around town.  I do plan on rebuilding the suspension, and putting AC back in the truck, maybe a halfway decent sound system. Might even have the truck bed lined, and the truck repainted.

--Richard
1982 Datsun 720 SD22
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Rusty View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rusty Quote  Post ReplyReply Direct Link To This Post Posted: 24 Aug 2014 at 12:25am
Welcome to the DMT forum kos. That desiel is gonna make Ez on here jealous. Start ya a build thread in the 720 section so we can keep up with your work. Did it have A/C and someone took it out? Yeah I'd get that goin again for sure.
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kosjubrmod View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kosjubrmod Quote  Post ReplyReply Direct Link To This Post Posted: 24 Aug 2014 at 2:11am
Yes it *had* AC, likely from the factory.  There are dash controls, lines still in place, and the evaporator in the dash, and ... I think I just need the compressor, idler and belt?  But I cant find any for this year... been trying to find info on like model compressors being used on the SD22.  I'm learning that anything parts related is difficult to source around here.

Why anyone would remove AC from a vehicle in the south is beyond me...
--Richard
1982 Datsun 720 SD22
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EzCruiser View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote EzCruiser Quote  Post ReplyReply Direct Link To This Post Posted: 24 Aug 2014 at 1:20pm
Welcome to the site.  Shouldn't be to hard to find a compressor:

Here's a link to a diagram for an 83 with sd22.  The part numbers listed show for sd25 as well.  Just read the part description from this link: 

This guy on ebay is selling parts off his SD22 and you can see that he has the compressor still attached to the engine.  Might be worthwhile to contact him if nothing else, to get pictures of the setup so you can see what you need.  Something tells me shipping would kill the deal...

I've been doing a little searching while writing this.  Seems like the sd22 uses a universally mounted compressor that is available today: SD508 

Here's a Yoke VR4709:


My question would be do you want to keep the R12 or switch to R134?
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Rusty View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rusty Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 2014 at 12:40am
Can you still get the R12? I was planning on putting a A/C unit I've got in Ole Blue one of these days. I've never really looked into what it takes to switch over. Just want to do whats easiest.

Edited by Rusty - 26 Aug 2014 at 12:44am
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kosjubrmod View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kosjubrmod Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 2014 at 10:28pm
Thanks for the research and the part numbers!

About the changeover - my understanding is that a complete purge is required (done!) and changing a few O-Rings and refrigerant oil.  I'd probably go with the more-readily available R134a through a local shop, since i'm halfway there already.
--Richard
1982 Datsun 720 SD22
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smooth620 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smooth620 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Aug 2014 at 12:07am
Welcome kos!
Switching to 134 should be no problem. Most likely changing to 134 fittings, it's not necessary to swap hoses and other components.
 
Any chance on switching over to biodiesel?
Better to learn from other peoples mistakes than to make them yourself.-Anonymous

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