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Ben_upde

Greetings! Intro/build thread

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2 hours ago, Lawlis said:

So what systems are you swapping other than the drivetrain? I think it's a great idea and something I'd like to do as well. Maybe a 2.0T for me.

 

The truck is going to be externally stock aside from JDM style mods like flares, fender mirrors, lip, etc. 

The interior is also going to remain as stock looking as possible aside from my replacment ‘racing’ seats that replaced the putrid smelling and horribly decomposed stock seats. 

 

As far as anything else, full electronic, coil on plug ignition means no need for any of the Datsun ignition setup at all. Massive fuel pressure differences call for the in-tank, high flow Walbro 450lph pump I installed in the fuel cell i’ll be relocating under the rear of the bed in place of the spare tire carrier. I’ll be leaving steering ‘stock’ for now aside from D21 adjustable tie rod ends and new bushings/joints everywhere. Braking is going to be D21 discs up front and trooper rear discs out back using the stock booster and master cylinder for now. The Audi transmission also uses hydraulic clutch so I should be able to just make a hose to connect stock Datsun clutch master to Audi slave and be good. Dimensions between the slave cylinders is really close. I’ll be using the full Audi engine harness to run the engine and related systems. The stock 620 headlight harness will be rerouted hidden but otherwise function the same. I’ll have a custom 1-piece driveshaft made after I get everything 100% set. Using the Audi shifter mechanism pared down to just essentials in the spot the datsun shifter sat. 

Not really much else to it I suppose. 

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28 minutes ago, datzenmike said:

Other systems?

 

Well the EI (electronic ignition) distributor (aka matchbox) and matching coil from a '78 and up is a nice ignition up grade. Better output and no points to replace.

 

A higher output internally regulated alternator is nice.

 

A high volume KA oil pump.

 

A front disc brake kit.

 

A 5 speed was optional from '77 up.

 

If I were sticking to the L engine, some of this may apply. My truck being a ‘79 had the ‘matchbox’ distributor stock (was missing but plugs and wiring still there).  My truck also came with discs up front so I can easily upgrade to the D21 setup, which I got for really cheap from a junkyard. 

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48 minutes ago, datzenmike said:

Other systems?

 

Well the EI (electronic ignition) distributor (aka matchbox) and matching coil from a '78 and up is a nice ignition up grade. Better output and no points to replace.

 

A higher output internally regulated alternator is nice.

 

A high volume KA oil pump.

 

A front disc brake kit.

 

A 5 speed was optional from '77 up.

I guess systems probably wasn't the right word for it. For me when I get started I'd like to retro fit the A/C system and if it doesn't require too much fabrication, getting the awd going as well. I don't have any experience yet with the 620 yet because I'm picking my first one up on Monday. I'm just trying to read around and get ideas for what I want to do.

 

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22 minutes ago, Ben_upde said:

 

The truck is going to be externally stock aside from JDM style mods like flares, fender mirrors, lip, etc. 

The interior is also going to remain as stock looking as possible aside from my replacment ‘racing’ seats that replaced the putrid smelling and horribly decomposed stock seats. 

 

As far as anything else, full electronic, coil on plug ignition means no need for any of the Datsun ignition setup at all. Massive fuel pressure differences call for the in-tank, high flow Walbro 450lph pump I installed in the fuel cell i’ll be relocating under the rear of the bed in place of the spare tire carrier. I’ll be leaving steering ‘stock’ for now aside from D21 adjustable tie rod ends and new bushings/joints everywhere. Braking is going to be D21 discs up front and trooper rear discs out back using the stock booster and master cylinder for now. The Audi transmission also uses hydraulic clutch so I should be able to just make a hose to connect stock Datsun clutch master to Audi slave and be good. Dimensions between the slave cylinders is really close. I’ll be using the full Audi engine harness to run the engine and related systems. The stock 620 headlight harness will be rerouted hidden but otherwise function the same. I’ll have a custom 1-piece driveshaft made after I get everything 100% set. Using the Audi shifter mechanism pared down to just essentials in the spot the datsun shifter sat. 

Not really much else to it I suppose. 

Thanks for the in depth response. What Audi did you get your engine off of?

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14 minutes ago, Lawlis said:

I guess systems probably wasn't the right word for it. For me when I get started I'd like to retro fit the A/C system and if it doesn't require too much fabrication, getting the awd going as well. I don't have any experience yet with the 620 yet because I'm picking my first one up on Monday. I'm just trying to read around and get ideas for what I want to do.

 

 

If your truck has AC already, retrofitting the Audi stuff to work with the Datsun stuff isn’t gonna be that difficult. Pretty much all AC compressors operate the same way. 

As far as getting quattro working, that is going to be an expensive endeavor. The way I have my engine sitting in the truck, which is fairly far forward to some engine swaps I have seen, the front wheel output hibs are still almost a foot behind where the front axle centerline is. Not to mention all the crossmembers and components in the way, it’s really not worth the effort in my mind. RWD is going to be too much fun in this anyway. 

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17 minutes ago, Lawlis said:

Thanks for the in depth response. What Audi did you get your engine off of?

Mine came out of my 2003 A4 that I had previously swapped a 2.7t into.  

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Drop spindles are on. Gonna reclock the torsion bars to raise it back up about an inch

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Glad I picked up those 1.25” spacers for the front. They help both looks and apparently lower control arm clearance

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Finally got a free couple hours with full welding gases and suppliesto get this charge pipe sorted. Still need to final weld everything but super happy with how it worked out!

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Not quite the lowest thing. Not ideal but stays hidden and it’s not like these have a ton of crush room anyway 😂

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Decided I didnt like the external crossover tube setup I had made for the radiator so I converted it to a ‘dual flow’ or ‘Scirocco type’ of radiator by splitting the tank in half and welding the outlet port on the lower half. Flow goes about like

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Finalized with original lower outlet plugged with some plate aluminum

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And fully welded the charge tube finally. She’s not stacked dimes pretty, but the welds are solid and leak free. About all you can ask for with a spool gun vs TIG which I have neither the equipment nor the experience with 🤷🏼‍♂️

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3 hours ago, NVFireFighter said:

What kind of mirrors are those?

Just the cheapy zcar ones off ebay. I think they were $59 or so. They are plastic so not ideal but a good placeholder til I can afford real ones. 

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Got a chance to spend a little more time on the Datto today. Pulled the gas tank, all the old fuel lines and brackets that are no longer necessary and removed the bed for fuel cell installation. 

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Also sourced myself one of these beauties.

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I should have a quick release for it in the next couple of days. 

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Looks like the fuel cell wants to reside right about here. I’ll make a steel angle bracket frame and line it with rubber for isolation. 

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Aside frome needing to source some stainless strapping for bands and some isolation material the fuel cell is mounted 😃

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Plenty of clearances for all activities, including filling the diff 🤘🏻

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Chop chop ✂️

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Started cutting wheel arches so I can progress further on bodywork

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Unfortunately not more progress on the ‘79 but this fell into my lap. It’s a ‘77 deluxe KC w/a 5 speed. 

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Edited by Ben_upde
Typo. Issa 77
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Nice score, excellent patina 😄

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3 hours ago, ]2eDeYe said:

Nice score, excellent patina 😄

Thanks! I started a new thread to keep track of it/decide what to do with it 🤷🏼‍♂️😂

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KC #2 is pretty much roadworthy so time to get back to KC #1 😁

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11 minutes ago, Stoffregen Motorsports said:

That's a great photo.

Thanks! Just standing at my office door as I was getting ready to call it a night and saw it. They both seemed to be looking at me for attention 🤣

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1 hour ago, ]2eDeYe said:

Oh, to have that much room for dattos

 

How true!!! The shop (24 X 36) is almost full with my Dad's stuff (he's been gone since 2001), and my stuff almost fills the rest. My vehicles have to set halfway in the roll up door because of lack of space.

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4 hours ago, 620slodat said:

 

How true!!! The shop (24 X 36) is almost full with my Dad's stuff (he's been gone since 2001), and my stuff almost fills the rest. My vehicles have to set halfway in the roll up door because of lack of space.

This section of the shop is 50x100, added onto an existing building that was approx 60x60. 

 

It’s my work though so if I stack a ton of stuff around here it takes up room for money making work. 

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