Predator 670cc pickup truck , gokart truck .

This truck has had a 79cc predator , 212cc predator , 224cc , and the Duromax 440cc. Now the 670cc Predator.

[JVHShack]

This may be something to consider: Out of the box, from what I've seen, the Predator 670cc is very restricted from an airflow perspective. If the carburetor and the exhaust were opened up a bit, you would probably see some actual power out of it. The stock muffler on the Predator 670cc is the worst offender, imo. Robot Cantina is working on a Predator 670cc powered 60s Renault series, btw. He may have some notes for you if you want to "open the taps" up a bit.

[hunterdoncanady]

My opinion on your problems with the 670, first the fuel delivery, on the truck we built like you i put a boat gas tank in the bed and ran a fuel line to the engine. Used a 2-3 psi fuel pump and works wonders. I think that will fix your hard start problem. Remove the governor to get a few more revs and hp and it will perform much better. The vibration i almost guarantee is from all those chains and clutches you have. Run a choke cable to the cab so you can get it going as well.

[tedbastwock]

I dont have any tips (wish I did), just want to give some encouragement to keep on chuggin with this project, its very interesting, educational, and I think you are inspiring a lot of us to put something like this on our short list. Love this series!

[SluSharkND]

This project is so much like my dreams it's scary! I'm bought in for the long haul, so keep the content coming. Side comment: i hope those that don't like you talking in the videos follow that advice when they make their own content on their channels. For your channel, please don't change a thing.

[AA-tbff]

Two clutches thats pretty cool i would have never thought to do it that way.

[DeanMk]

I used to have an '89 Mazda B2200.
Owned it for over 20 years. Best truck I've had so far.

[willymack]

You just make the most awesome videos Chris thank you so much I always enjoy your videos and your smile is just infectious thank you for your wonderful videos and I can't wait to see your truck with the big wheels on it. God bless you for the joy that you bring to others.

[buckieharrison]

To get into 4th and 5th gear change ur pulleys up so your engine RPMs stay up. Its all about the RPMs with these motors. Smaller sprocket faster RPMs.

[JimRockford-juol]

No clutches needed, period. Wasting HP. The transmission has a clutch. What you need to do is make a shaft with 3 bearings. Holding the original flywheel and mounted to the Bell. Then, sprocket the output shaft of engine to the flywheel shaft. You can do this with 3 or 4 belts like a light helicopter. Has a pulley system that tensions the gearbox.
I like your project. Good progress. I'm sure you thought of all of this.

[EaosnMom]

My husband and I enjoyed meeting you at yesterday's car show and seeing this creation :)

[BruceLyeg]

Definitely sounds like a fuel delivery problem. Get a small low pressure electric fuel pump and running the choke cable into the cab should help getting it started easier.
That's pretty smart thinking with the double clutch
👍

[tim]

I was hoping for better results. Love the tractor tires.

[wakka_wakka]

These videos are super helpful & deserve a lot more views

[keithbaker]

Oh man you are getting it together, I agree with fuel pump and maybe a choke warmer to get it warmer quicker and yes bring it in side all controls that you can

[Mikefestiva]

That’s a bummer the engine it’s working out so well. I think these engines are sold really lean from the factory. Probably re jetting the idle and main jet will definitely help especially when it’s cold. Maybe you already got it sorted out? Thanks for always making great videos Chris 😊👍

[willymack]

As always Chris an absolute fantastic video and I can't wait to see your new truck. I hope you and your family have very Merry Christmas and I hope this new year is the best year of your life ever. Be safe and healthy And to you and your family always best wishes and blessings.

[alsouthern]

What ever you do to it, it's still fun to watch. Keep on keeping on

[mikeydizme]

You just gave me a great idea. Do this with an early 70s mini truck like a Datsun, Chevy Luv, or Ford Courier.

[alexeatonexploresamerica]

This is fascinating I learned something new today

[fm]

Reach out to the guy with the "Robot Cantina" youtube channel. He's currently running a 670 predator in an old renault with a rear engine setup similar to the VW Beetle. He's been working with the exhaust and carburetion of these engines to make it driveable, and you both could take notes from each other. The factory 2bbl on the 670 is made for constant rpm operation, and not accel/decel. He's having power transfer issues, and your setup looks near bulletproof. A properly jetted Khein with a spacer and intake from perfomance670 with a better exhaust would make a major difference. He's topping out in the 60 mph range.
Good luck with truck.