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PostPosted: Fri Oct 12, 2018 1:46 am 
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Lurch wrote:
Well... That was fun while it lasted :(
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Alan Bent wrote:
How are you supposed to live with less than ten Datsuns?

www.nostalgictrio.com My neglected blog
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www.csp311.org CSP311 Silvia Register
http://goo.gl/3vkZ0i Cool Datsun T-Shirts


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PostPosted: Fri Oct 12, 2018 3:15 pm 
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Twins. I'm getting twins!!

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1972 Datsun 1600, S14 SR20DET Engineered (190-210kw @ 15-16psi.)
http://www.ozdat.com/forum/viewtopic.php?t=6579
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PostPosted: Sat Oct 13, 2018 1:52 am 
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Congrats mate. Now you mention it, I remember seeing something on facebook about it.

Guess you'll need a pair of these soon
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Alan Bent wrote:
How are you supposed to live with less than ten Datsuns?

www.nostalgictrio.com My neglected blog
www.wazregister.com WA Z Car club
www.facebook.com/groups/wazregister/
www.csp311.org CSP311 Silvia Register
http://goo.gl/3vkZ0i Cool Datsun T-Shirts


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PostPosted: Wed Oct 31, 2018 12:57 pm 
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So a few updates to share on the car.

I've finally fitted water spray jets onto my windscreen wipers! Yes I know, with babies on the way I probably should've left the easy projects to when I am changing nappies and can spend a year and a half fitting some zip ties (cause that's all the time I will have supposedly - thanks guys!)

I bought a kit off ebay, which fitted onto the custom wiper arms that I am currently running. Nice and low profile and seem to work really well. I wanted something to replace the broken jet I had already on the car that was annoying. I could've soldered it back onto its original mount, but wanted something a little more "usable".


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1972 Datsun 1600, S14 SR20DET Engineered (190-210kw @ 15-16psi.)
http://www.ozdat.com/forum/viewtopic.php?t=6579
M35 Axis Autech
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PostPosted: Wed Oct 31, 2018 1:08 pm 
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Now to the fun stuff.

I've always toyed with the idea of running a catch can on the SR, ever since running more boost and higher temperatures on those track days. Removing the ability for the power robbing, octane reducing, oil vapor being sprayed into the inlet and reducing the ability for the engine to make reliable power was starting to interest me.
The engine seemed to produce minimal oil vapor (collecting it in a temporary coke bottle under some typical driving and hard dyno runs), so that was a good sign, but insurance is always a good thing.

Not pleased with the current availability of catch cans that integrate nicely into the 1600, the ability to 'work' and capture what they are meant to capture and the damn price of some of this stuff led me to design something up. I had a sneaking suspicion in the long run it was going to end up more expensive and take longer to design/build and fit, than just purchasing something off the shelf and bolting it in, but where is the fun in that?

So off we go...

The catch can I designed is a semi-integrated design allowing the washer bottle water to partially help cool the catch can and draw some heat out of it allowing oil vapor and moisture to condense. The other 'must have' was an air path that convoluted the air enough to try and pull out any vapor accordingly.

CAD model had just enough detail to allow me to pull the trigger and purchase materials.


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1972 Datsun 1600, S14 SR20DET Engineered (190-210kw @ 15-16psi.)
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PostPosted: Wed Oct 31, 2018 1:11 pm 
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For some reason, having access to aluminium cylinders in the grade that was capable of supporting water wasn't available, so I had to roll some up out of flat sheet metal.


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1972 Datsun 1600, S14 SR20DET Engineered (190-210kw @ 15-16psi.)
http://www.ozdat.com/forum/viewtopic.php?t=6579
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PostPosted: Wed Oct 31, 2018 1:13 pm 
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Now came the fun part; fitting the custom designed baffle, made from some nice anodized thin sheet.
Slotting straight into the catch can cylinder. The idea is the vapor laden air goes onto the 'inlet' side, snakes it way down through vent holes, to a variety of strategically placed vent holes all the way down to the bottom, then passing all the way up the other side to the outlet on the side facing away. Any oil that gets caught gets captured in the bottom. If it gets full past the bottom layer, the efficiency decreases dramatically, but there would be trouble with the engine if this happened anyway.

The lower picture shows the thought processes going on in my head on how to mount this sucker. Welding brackets in place and making it removable from each other would allow repairs if anything failed or needed modification.


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1972 Datsun 1600, S14 SR20DET Engineered (190-210kw @ 15-16psi.)
http://www.ozdat.com/forum/viewtopic.php?t=6579
M35 Axis Autech
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PostPosted: Wed Oct 31, 2018 1:19 pm 
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A few years pass (check the photo dates!) before I conjure up enough time/motivation to get stuck back into it again.

Mounting up in the car before welding and tweaking the brackets always pays dividends.
Using Aeroflow screw top, and the proprietary blue tack for bonnet clearance measurements.
Using the most advanced assembly method known to mankind...masking tape.

After checking fitment, it was taped and marked up ready for welding.
Now, I am rusty as all hell with aluminium welding (pun intended?) and some attempts and getting my eye back in failed dismally. I'll blame the TIG on that... Impatience led to getting a well known company to work their magic. Canfred Engineering in Bayswater (VIC) to the rescue. Top job and quick turn around. It also pays to know which materials you used when asking to weld this stuff up.


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1972 Datsun 1600, S14 SR20DET Engineered (190-210kw @ 15-16psi.)
http://www.ozdat.com/forum/viewtopic.php?t=6579
M35 Axis Autech
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PostPosted: Wed Oct 31, 2018 1:30 pm 
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Assembly is always a good part of the project.
I designed the washer bottle to use the old Datsport washer bottle motor, luckily there are replacements should I need a new one of EBay. The motor is mounted on its own little bracket with some zip ties to hold it in place. Not yet polished finish.

Air that is cleaned by the catch can will then flow back into the inlet pipe after the Air Flow Meter. Therefore I had to weld in a stainless ORB fitting using the new TIG. (see I told you it was the TIG...)

Making up custom piping is always a pain. Cutting that stuff and fitting it onto the connectors does my head in. The old saying measure twice and then cut, usually becomes measure 11ty and cut twice... Routing this would feed hot oil vapor carrying air into the catch can where it would be caught and fed back into the inlet (closed loop per ADR). Any condensate captured would be drained at the beginning of the next day. I also can route the drain into the sump, but that's a later project.

The finished product all polished up, ready to be fitted. I decided to remove some material on the bracket that holds the contraption to the strut tower to make it look nicer and weigh 12grams less, why? Because.

Overall a very satisfying project on the car. Going for a drive, I was impressed by how much moisture the catch can captures. Daily driving to work didn't capture much oil though, so I will have to wait until the next track day! (which may be never unless I sneak one in before the twins come...)
Might have to throw some paint on the strut tower brace bracket... Wait, there's a mini project! YES!


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1972 Datsun 1600, S14 SR20DET Engineered (190-210kw @ 15-16psi.)
http://www.ozdat.com/forum/viewtopic.php?t=6579
M35 Axis Autech
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PostPosted: Wed Oct 31, 2018 6:23 pm 
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Nice work mate . Thats a massive effort


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PostPosted: Thu Nov 01, 2018 8:27 am 
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Hahaha... Yes for something so 'simple' as a catch can and a washer bottle.

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http://www.ozdat.com/forum/viewtopic.php?t=6579
M35 Axis Autech


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PostPosted: Sat Nov 03, 2018 6:15 pm 
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Tidy work as always Nik ;)

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PostPosted: Sun Nov 04, 2018 8:02 pm 
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Looks great Nik

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PostPosted: Thu Nov 08, 2018 7:12 pm 
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Thanks gents. Seems to do the trick.

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http://www.ozdat.com/forum/viewtopic.php?t=6579
M35 Axis Autech


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