Autopians! I haven’t written much this year. I’ve been flat out like a frog on a highway with work and life and all that.
Last time I wrote about this paddock-to-plated old beast of burden, I had sorted out the bonnet-lifting dramas and made some further livability improvements ahead of two roadtrips to the south of my home state of New South Wales.
I haven’t done any real long-distance trips in our rolling effort to the battle against entropy since the April roadtrip back to ‘Condo, but old ‘Cactus still gains miles every week as my main ride when I’m not working.

This old ute is still earning keep, carrying away garden waste, timber and even working as a weed sprayer to clear out the bindis from my yard when the agile Mighty Boy isn’t available.
For those of you who don’t know the backstory, here’s the story of Project Cactus:
I did a quick trip in July down to Cowra to swap (with some cash) my A518 transmission that was going to be in the ‘79 CM Regal SE for a GearVendors overdrive setup for my A727 which will be an easier install without having to cut the gearbox/torsion-bar crossmember and have gear-splitting as an added feature.


The bloke I swapped with is putting the A518 into a late-50s Chrysler Wayfarer, where he has the opposite problem: the ‘AP2‘ Wayfarer is body-on-frame, on an X-chassis no less. The GearVendors unit measured to hit the X, whereas the A518’s bulk is no concern when the floor is non-structural.

I’d love to do another interstate trip, but it’s not on the cards this year with the busiest period for my job coming up in about a month when the bulk of the grain harvest is finishing up.
Showtime

A little over a month later it was time for the Dubbo Motorfest, also up to the third running of the event. Raising funds for local charities, this show has been growing each year and saw 8,000 people through the gates and raised nearly $50,000 Aussie dollars for local community groups.
My company encourages us to take a day of Volunteer Leave to help out in our community. I use mine each year to help set up the show on the Friday and then run the traffic control for the main gate for the show on the following day.

After two years of perfect pre-spring weather, this show was cold, wet and windy. A bit of a challenge with my shift on the gate starting at 5:30am, we persevered and still had a great day overall.

I didn’t get a lot of photos this year, but I did get this of my mate Glen’s mad old truck, running a twin-charged Detroit Diesel!
At this year’s show, local tuner Mr HDT brought his chassis dyno down and invited some local rides and a few elite show cars to spin the rollers and have the crowd pay to guess the horsepower.
Our cheeky cargo-carrier was invited to take part and help raise some funds for good causes. After lunch our timeslot came up, and I drove from the display area to the dyno.
Ahead of this showing, I bought a cheap tachometer so I could see how high our mighty inline-six could rev and installed it with appropriate dodginess:


Gotta keep it agricultural!
With Cactus eating every speedometer I’ve installed within mere miles, the tacho is a good addition as an auxiliary speed-measuring device.
Brake Horsepower
Close to the ramps, I let the Mr HDT crew park up onto the dyno and make their preparations. Standing in the dyno area, I saw a good number of my Valiant mates and other well-wishers had come out to see how our rot-rod would go on the dyno.

Knowing the 245 ‘Hemi’ inline-six under the bonnet was originally rated by Chrysler at 160 gross horsepower at the flywheel and our ex-paddock basher mill being completely stock except for a Holley 350cfm carburettor, dodgy exhaust headers and a DIY HEI spark system, I put my guess in for 100 brumbies at the wheels.

The crowd had a wide spread of guesses, ranging from around 70 all the way to an outlandish 250. I guess they thought it had some kind of secret-sauce technology hiding somewhere in the CAT-yellow engine bay!
Evidently the dyno crew weren’t anticipating anything outlandish, they didn’t even bother with straps!
Each vehicle had three runs, and Cactus made plenty of noise spinning up:

Not bad, not far from what I anticipated. They only ran the ute up to around 4,000rpm as it was getting super rich by then and wasn’t making any extra horsepower past 3,500rpm where the Air/Fuel ratio was around 11:1.
I don’t typically rev much over 3,500rpm on the street as the 245 has a very stout bottom-end shove, peak torque coming on by 1,800rpm (at least 190ft/lb or 257Nm) so you get a good launch and up to highway speeds quite smartly in spite of the slow 1-2 shift via the column lever.
I was asked to hop in and drive off the dyno once the rollers were locked. When I hopped in the cab, I noticed the handbrake was left on!
When I had reversed up to the dyno, being on uneven grass I had instinctively pulled on the umbrella-style handbrake lever before the dyno crew reversed it up.
After a good laugh and jokes made about ‘brake horsepower’, it was decided we would do one more run, with the handbrake completely disengaged:

That’s more like it! I know the handbrake cable is stretched and could do with some adjustment (re: more wheel nuts for spacers) but to only knock off 10hp is a little funny. Lucky it’s a manual, then!
Three Years Of Feral Ute And Less-Feral DT

I have since bumped up the initial timing from the factory 5 degrees to 10 degrees BTDC and have an even crisper throttle response, on top of what was already a darn good performer. Next step I might finally pull the fuel bowl off (carb has not been opened since before 2011) and see what jets are inside.
The spark plugs read as pretty clean, and fuel economy is great overall with highway mileage around 20 US MPG / 11.5L/100km but if we can get even better results and more power with some more fettling, why not?
I have been talking to a few people more seriously about forced induction once the brakes are improved from the all-wheel manual drums. May as well be the architect of your own consequences!

Three years have now passed since I spent the better part of a month helping a madman who flew out from Detroit slam together a functional-ish vehicle out of two abandoned utter heaps that somehow avoided the demoliton derby circuit, with their only future in becoming whitegoods or food cans.
With the immense help of Hud and a cast of a good dozen others around Dubbo and some fellow Valiant maniacs around NSW helping with parts and advice, we made the goal of the Deni Ute Muster.
It was a slog for all involved, but it was a great experience and an example of the incredible things that a couple of like-minded people can accomplish.
I had fully expected to either part-out or sell this shitbox Dodge at the end of the first year. That seems impossible now, with this ute still bringing smiles and even influencing some mates kids into car enthusiasts:

I’m positively chuffed to see David kicking major life goals and enjoying himself without burying himself in iron oxide every day, I’m also supremely grateful for the opportunity to write for the Autopian and share a little bit of Australia and our car culture that may not be as widely known as the shouty, shiny stuff that gets more air time.
Don’t be afraid to share your goals and aspirations, you never know who might be able to lend a hand. Learn something, teach something and pass it on.
Rage against a soft-close existence. Rage against being average. RAAAGE!
Have a pearler of a time, until we meet again!










Always love these updates, Laurence! Cheers!
Thanks, I enjoy writing them!
Please refer to aussie dollars as Dollary-doos
There’s nothing wrong with the Mighty Boy, is there?!
(said in the Simpsons go to Australia outraged disbelief)
Well not now, there isn’t!
It was unavailable for a few weeks while I replaced the cylinder head.
The Mighty Boy is a great spray rig as the boom is slightly narrower than the mirrors.
Cactus also makes a great spray rig because the cupholders I installed fit a couple beers and theres a Bluetooth audio system!
I’m amazed (and very pleased) to see that Cactus is still rolling!!
Cheers, as fun as my other vehicles are it always seems to be the one I pick for runs into town these days
Great piece, great seeing your byline back on the site and also great seeing Cactus still in action, Laurence!
Bravo, mate.
That Noiseworks song is killer also.
Thanks SWG! When are you coming over?
I thought you might like that track, I bet you could do a killer cover of it too!
This was immensely entertaining to read, as well as informative. Thanks Laurence! 🙂
Thank you, it was fun to be writing again!
I am intensely curious as to the “LOW WATER” sharpie pointing at an RPM gauge. Did Project Cactus get converted to steam power when I wasn’t looking?
I installed a low water alarm last year, theres an LED secured through what would have been a mounting hole for heater controls.
It’s a light and an audible alarm with the sensor in the top radiator hose.
Oh that’s neat!
(Although you could have told me basically anything and I would’ve believed it. “Yeah mate, hit a roo and thought, I should cook her up roight here so next thing y’know Proj Cactoo’s got the latest in 19th century power tech”)
(apologies to the entire continent of australia)
Awesome. I always get a little giddy when I see Laurence’s name, and I am glad to see Project Cactus is still doing good. Thanks, mate!
Cheers, cobber! Hopefully I’ll get some more writing done soon!
What’s with the koala stickers?
As per the text, a mate’s kid loves Cactus and is becoming an enthusiast.
She wanted to put the stickers there, who am I to refuse?
can’t see i’ve seen dyno guys not bother with straps before, lol
I thought they were kinda game with it being an elevated dyno! My tuner for the Charger never used to strap anything down, but his dyno was built into the shed floor and was only used for light loads to clean up carburetor tuning before a road test.
Tie me kangaroo down, Sport.
I’ve been in NSW as far north as Pokolbin and as far south as Batemans Bay. On Anzac Day! Up to the ACT from there. Australia was a wonderful place in which to spend a couple of weeks. It’s just a really long trip from Seattle.
Great to see that Project Cactus is still kicking!
Thanks, it’s too much fun to stop driving!
I applaud your company suggested help your community and allowing you to decide the way you wish to donate your time. My company requires the commitment off hours based on their does it meet the DEI Metrics and do it on your own time and mention the company.
Congratulations on having a 10 horsepower brake. Three years already? Cheese n crackers! Nice to read you again, Friend.
I know of a Chrysler engineer that gets on the Aussie Valiant pages from time to time, should ask if anyone tested the handbrakes like this back in the day!
What are the current Aussie Valiant pages? (I’m assuming Facebook?)
The last remaining Valiant Forum closed earlier this year after the guy who took it over and paid the hosting costs to keep it open died. Someone else took over paying for the hosting, but nobody had Admin access, and the few of us that still visited were mostly posting to keep it active after all the other users had disappeared to Facebook Groups, so it was eventually allowed to die by neglect.
Yes, Facebook pages. H6P was great back in the day, I didn’t have as much to do with MM but did get some parts off there such as my 45 DCOEs
“fuel economy is great overall with highway mileage around 20 US MPG / 11.5L/100km”
That’s not what I would call “great” for a car with a 100 hp engine. Even my 100 hp 1960 Triumph with SU carbs, all iron pushrod engine and the aerodynamics of a slightly smoothed brick managed ~30 MPG on the highway.
Yeah, but don’t judge until he reports back about what mileage he gets with the handbrake off.
A continuing happy tale.
Thank you.
Laurence, Project Cactus picked a fine sidekick in you.
Not a bad writer either. (-;
Thank you! This ute just doesn’t want to quit! I would like to write more, hopefully over summer break when it’s stupid hot outside I might get some time to knock over some subjects I have been meaning to get to.
I hope that all of the old cars I’ve sold over the years are living their lives like this.
I haven’t had much luck tracking owners, I bet they would be surprised it still goes if they knew about it!
Somehow, you’ve got to get a picture of Cactus with Mel Gibson. After all the old ute has now got to be the most famous car Down Under since Max’s Interceptor.
FWIW, Mel is supposedly in the running to be appointed US Ambassador to Australian. There hasn’t been on since Caroline Kennedy was recalled post US election.
Obligatory old car mention
https://au.usembassy.gov/team-moonshot-crosses-the-shitbox-rally-finish-line-raises-over-340000-for-cancer-council/
Wonderful to hear Cactus hasn’t driven off to the great junkyard in the sky! Having a vehicle that is a bit crude yet charming is definitely fun.
Thanks, it’s fun to drive something that you can improve however you want with stuff from the hardware store
That right there sounds full Aus!
Man if it wasn’t for the serpents the size of nightmares I could totally see myself exploring OZ. Just looks awesome!
I’ve lived here most of my life, and have not been killed/eaten once… It really is worth a visit, and with USD/AUD exchange rate, a very cheap one for you guys with Freedom Dollars!
It may happen. Right now I’m living vicariously through Bluey lol!
Based in Brisbane – as I am! Home of the 2032 Olympics too…
We were out there at the beginning of this year – just Sydney and Melbourne. It was great – we could easily see living in Sydney. It’s a big city but still manages a laid back vibe. And the people are just really nice.
Glad you enjoyed it! Next time definitely check out Newcastle (North of Sydney) if you wanted city life but even more laid back and less hectic.
Can also recommend heading into the countryside, of course.
I’ve wanted to explore the US, but like here there is so much to see it’s going to take some planning!
Let me know if your plans ever include Northern California.
My wife any I were just talking yesterday about how cool it would be to take a trip to Australia next time we do a big getaway. As long as you can reasonably assume me one of us won’t get eaten by a spider.
Had relatives lived and worked in Australia. Don’t worry it’s a less than 90% chance that you and your partner will die from the deadliest country. Certainly guaranteed one of you will die or at least get close. On the bright side eaten by a spider zero, most likely die of a spider bite and get eaten by a dingo. Rare chance die of the bite and become a place where they imbed their young.
I say go for it! If you come in the cooler months (April to August) the reptiles are less active, and we don’t have big predators (wolves, bears, etc) like the other continents.
Don’t tick off a Cassowary, though!
When I read this comment my brain shifted to an Australian accent.
Have personally been chased by a Cassowary (Punk Emu!) but managed to not die!
Great to see that old ‘Ute still being used!
Thanks, it’s too handy not to have around!
I bet Cactus wasn’t planning on being daily driven!
It’s nice to read more Laurence stories.
The disbelief from some people when you turn up in this old banger can’t be compared!
I’d pay good money to see you drive it across Sydney.
Always good to hear about Project Cactus. Three years? Good grief, where has the time gone?
Double always good to hear from you, Laurence.
Thanks! I know, next I’ll turn around and little Delmar will be wanting to build his first car
Love it, and that it just works.
Also, is there any idea on why it eats speedos?
I am guessing the speedos are full of crud. I’ve changed speedo twice and even the speedo cable and it keeps happening.
At this stage I’m going to try putting one of the speedos through the ultrasonic cleaner and then spray some dry lube on the mechanism
I bought a GPS speedo off of Amazon. $50 or so. Hook it to 12v and you’re golden.
I have a $20 Amazon GPS speedo, it works well and has helped track the mileage but has a really poor refresh rate.
The tacho is a good auxiliary as I have a pretty good idea of what rpm correlates to what speed I’m doing
Triple digit horsepower! Nice!!!
I can only dream of such power!
(Well, my current car made 105PS when new, but I’m sure it’s lost a few ponies by now, and IIRC PS is measured at the crank)