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Datsun 510 Blog

I blog about everything. Even my car.

SHEET METAL WORK

2016-03-29 15:50:54
by: jovial_cynic
Because I've become comfortable cutting up the Datsun 510 and welding it back together, I decided to try my hand at some panel repair.

A couple of years back, I tore apart the rear panel of my car to address a significant bondo issue. As in, there was too much of it, and it just needed to be removed. This time around, I decided to fix a portion of the rear passenger panel. This actually required a bit more work, because I had to fabricate the 510's signature lines.

Now, I could have bought a replacement panel from Futofab, and this particular piece would have only been about $100. However... I do like doing things myself and learning in the process, so... here we go.

Between my bead roller and some careful hammering, I got pretty close:



And here's the reason I needed to make that panel:



It's pretty amazing how much better this looks... and it's not even attached to the car yet. Having a straighter line makes a world of difference.



Here it is welded up. You can tell it's not perfect, but it's so much better, and I don't mind correcting the minor errors with a little bit of filler.



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R33 CLUSTER IN THE SR20DET 510

2015-06-03 20:55:50
by: jovial_cynic
My latest project with my 510 has been to get the instrument cluster from an R33 Skyline (RB25DET motor) into my car, and hooking it up to my SR20DET motor. I don't think anybody else has done this, and from the responses I've received when I've mentioned it, I don't think it's a popular modification. It's just not "period correct," as I've heard it said... which is odd, because the engine isn't exactly period-correct either.




Anyhow, I picked this instrument cluster because it has all the gauges that I like in one place without having to include a bunch of separate gauges. I especially like the boost gauge... although that particular gauge has been giving me a bit of trouble.

I looked all over the place online and found a few places where somebody has explained the wiring of the cluster, and at least one place that gave a rough explanation about how the boost sensor itself is wired, but I didn't find anything that spelled it out for me in a way that made sense.




So... between following all the traces on the back of the cluster, putting together the complete wiring diagram, I was able to actually put something together that should help me figure this thing out.




The image above is the FULL diagram with the boost gauge lines colored in so I could see what was going on. It's a 5mb+ image, so click at your own risk.




The odd thing is that after going over the diagram and the cluster for hours, I finally figured out that the diagram is wrong. The diagram and chart above spells it out a bit; the plug on the far-right is written in exactly backwards (instead of 1-to-12, it's 12-to-1). So, I put my own chart together and hopefully that makes it easier for me (and anyone else doing this) to figure the wiring out.



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GAS TANK UPGRADE

2015-01-27 17:06:34
by: jovial_cynic
The stock 510 gas tank doesn't have a built-in fuel pump. There are some debates about the benefits of in-tank or external fuel pumps, but in the end, I think I prefer the in-tank pumps because they are quieter. And while it seems like extra work to have to pop open a tank to access the pump if anything goes wrong, I've messed with this one enough times to tell you that it's just a matter of pulling a few bolts. It's really not that big of a deal.


Cutting a proper hole into the top of the stock tank takes a steady hand. If you're going to use a plasma cutter, you MUST either fill the tank with water or flood it with an inert gas so you don't blow yourself up. Even the tinest bit of gas fumes can wreck your day or KILL YOU if you don't protect yourself.


I picked up a whole 1995 Honda Civic gas tank for $20 and cut the pump access off of it and welded it on top of the hole I cut out for the 510 tank. Again, because you are welding in a potentially deadly environment, either flood the tank with water or an inert gas to protect yourself. DON'T DIE doing this.


Once the pump access is welded on, bolting down the seal is easy. And all the wiring for the pump is right there on top.

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SR20DET FITMENT

2015-01-27 16:52:36
by: jovial_cynic

The first part of getting an SR20DET into a 1971 Datsun 510 is (aside from actually acquiring one) is figuring out how to get the engine into the engine bay. It wasn't meant to be in there.


Problem #1 is that the stock 510 crossmember is backwards relative to the oil sump on the SR20 engine.


Cutting and flipping is a common option. I decided to cut and reinforce with some 1" square tubing I had sitting around. I don't know why.


Here you can see the crossmember attached to the car, but if you look closely at the left side motor mount, you can see something wrong.


The stock mounts don't line up with the SR20, so some modifications were necessary.


Specifically, I had to add some length to both motormounts to get it to stand off from the crossmember enough to fit. I also had to make sure that this didn't make the engine sit too tall to close the hood. We're good.


And here you can see it fitting up just nicely.

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SR20DET RELAY BOX

2015-01-27 16:39:01
by: jovial_cynic
One of the tricks to getting an SR20DET motor into any car is to figure out the wiring, and building up (or buying) a relay assembly. I'm more of a DIY guy, so I figured I'd follow some diagrams and make one myself.

Here's the wiring diagram so you can do this yourself.


The parts are pretty simple. It's just 3 relays, a junction bar, and a box for fuses. If you really wanted to simplify things, you don't need the junction bar or the fuse boxes. You could wire everything direct and have a bunch of wires going everywhere, but I like things a little more tidy.


I also like seeing how tightly I can package things, so I stuffed everything into a cardboard box. The box I had was too big for my liking, so I cut it down and made it as small as I could.


I found a small computer power supply case that I gutted and stuffed the relay assembly into it. I have a fetish for metal boxes. I don't know why.


And this is where I tightened up all the wiring...


... and connected it to a proper pig-tail so I can disconnect it as necessary.


And this is the relay box, labeled and ready for install. Bolting it down grounds it to the frame of the car, and it works quite swimmingly.

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2015-01-27: NEW SEATS 2015-01-27: FINGER CHOPPING FAN BLADE 2013-05-20: ADVENTURES IN BODYWORK 2012-12-02: BEAD ROLLER 2010-10-03: PAINT JOB RESULTS: GOOD ENOUGH 2010-09-27: RUSTOLEUM PAINT JOB 2010-03-20: JUST AN INCH 2010-02-27: SIDE SHOTS 2010-02-27: MORE ODDS AND ENDS 2010-02-20: ODDS AND ENDS 2010-01-30: DATE AT THE JUNKYARD 2009-12-02: JUNKYARD HEAVEN 2009-11-29: FISCH ART 2009-10-24: LIGHT AT THE END OF THE TUNNEL 2009-10-14: FIVE DEGREES 2009-10-12: DIY DYNO RUN 2009-09-29: FUEL PUMP SPACER 2009-09-27: ALL ABOUT TIMING 2009-09-12: TWO WIRES 2009-05-09: NEW KICKS 2009-04-26: BY THE SEAT OF MY 510 2009-04-20: DATSUN 510 PICTURES 2009-04-08: BACK ON THE ROAD 2009-03-15: MORE DRIPPING 2009-02-24: HERE A DRIP, THERE A DRIP 2009-02-17: NISSAN/DATSUN TRANSMISSIONS 2009-02-16: ENGINE AND TRANNY 2008-11-21: REAR WINDOW INSTALLED 2008-11-06: RING GEAR INSTALLED 2008-10-23: NEW ALTERNATOR 2008-10-23: PULLED THE RING GEAR 2008-10-20: PULLING THE ENGINE 2008-10-20: REMOVING THE ENGINE AGAIN 2008-10-18: MAKING IT SAFE 2008-08-05: RAT OF A CAR 2008-06-28: BANJO 2008-06-24: TINKERING 2008-06-19: CLUTCH MASTER CYLINDER 2008-06-17: ON THE ROAD AGAIN 2008-02-02: SPEED BLEEDERS 2008-01-27: DRIVING AROUND AGAIN 2008-01-26: THROTTLE CABLE 2008-01-26: TIMING SORTED OUT 2007-11-17: TIMING THE DISTRIBUTOR 2007-11-16: ELECTRONIC DISTRIBUTOR 2007-10-25: SMALL PROGRESS 2007-08-06: RADIATOR: THE CONTINUING SAGA 2007-07-30: WRONG ABOUT THE RADIATOR 2007-07-28: NO RADIATOR SWAP 2007-06-30: ACHIEVED IDLE 2007-06-23: BACKFIRE 2007-06-23: SHE'S RUNNING! 2007-06-22: COOLANT LINES 2007-06-17: SU CARBS INSTALLED 2007-05-14: LOTS OF PICTURES 2007-04-20: SU CARBS 2007-04-17: VACUUM LEAK 2007-04-15: EXHAUSTING EXHAUST WORK 2007-04-12: FLEX TUBE != EXHAUST PIPE 2007-04-11: AROUND THE BLOCK 2007-04-09: RUNNING SMOOTH 2007-04-09: SHE LIVES! 2007-04-06: WATER, WATER, EVERYWHERE! 2007-04-02: INCHES AWAY 2007-03-29: WHOLE LOTTA NOTHING 2007-03-17: CAR PORN 2007-03-08: ROUND AND ROUND WE GO 2007-03-04: PAPER 510 2007-02-28: PROBLEMS WITH EVERYTHING 2007-02-16: ELECTRICAL GREMLINS 2007-02-14: ENGINE INSTALLED. AGAIN. AGAIN. 2007-02-13: EARLY BIRD GETS THE CAR DONE 2007-02-08: COMPRESSION RATIO? 2007-02-05: STARTER ISSUE FINALLY RESOLVED 2007-02-02: EXTERIOR FRAME: RADIATOR SUPPORT 2007-01-30: PLANS FOR THE EXTERIOR FRAME 2007-01-29: MEASURE TWICE, CUT ONCE 2007-01-29: EXTERIOR FRAME TOO WIDE 2007-01-27: OUT OF BODY EXPERIENCE 2007-01-24: PREP WORK FOR SECOND INSTALL 2006-12-24: NEW YEARS PLANS 2006-12-01: PAINT? 2006-11-04: NEW CLUTCH KIT 2006-11-04: ROADSTER CLUTCH KIT 2006-10-05: BUILDER'S BLOCK 2006-10-02: CHOP CHOP 2006-06-05: THROWING MONEY AWAY 2006-05-06: TRANSMISSION MOUNTED 2006-05-05: MORE ENGINE WORK 2006-05-05: ENGINE INSTALLED 2006-04-30: ASSEMBLY NEARLY COMPLETE 2006-04-14: NEW TIMING CHAIN 2006-04-14: CHEAP TIMING CHAIN 2006-04-13: WORKING ON THE CAR 2006-04-13: STRUTS WILL WORK! 2006-04-12: MAXIMA STRUTS 2006-04-10: MORE CAR WORK 2006-04-10: NEW SEAT 2006-03-10: NEW FRONT COVER 2006-01-22: CLEANING UP THE HEAD 2006-01-15: PISTONS INSTALLED 2006-01-13: BREATHING IS NICE. 2006-01-09: MILLING BY HAND. 2006-01-07: PUTTING IT TOGETHER. AGAIN. 2005-12-28: RODS SAVE THE DAY 2005-12-24: CRANKSHAFT INSTALLED. 2005-12-24: OOPS. WRONG PISTONS. 2005-12-23: PROGRESS! 2005-12-22: PUTTING IT TOGETHER. SLOWLY. 2005-12-16: HEADER... WEEE! 2005-12-15: STILL NO MAIN BEARINGS. 2005-11-28: GAH! WRONG BEARINGS! 2005-11-18: UGH. THIS IS EXPENSIVE. 2005-11-06: FUN AT THE MACHINE SHOP 2005-10-18: NOT USING THE KA 2005-10-06: CRANK IS IN 2005-09-22: KA/Z/L2.1 2005-08-06: CHEAP ALTERNATOR 2005-08-01: BAD ALTERNATOR? 2005-07-25: ALTERNATOR INSTALLED 2005-07-20: JB WELD FOR EVERYTHING! 2005-07-18: DOOFUS = ME 2005-07-13: TACH INSTALLED 2005-07-11: GAUGE CLUSTER INSTALLED 2005-07-07: CLUTCH PUSHROD 2005-07-04: GROUND STRAP ISSUES 2005-06-30: IDLE ACHIEVED - YAY GASKET SEALER! 2005-06-26: NOT QUITE THERE... 2005-06-25: CARB TROUBLES 2005-06-24: FIRED IT UP