Smog pump supercharger

[Thepaetsguy]

Was he using blow thru? That might blow the slide open.
Draw thru, it should not be a problem.

16:50 minute mark and a couple seconds after the throttle sticks wide open. It is draw through

 

[sparkwizard]

HMMMM...small automotive carburetor with an accelerator pump and a power valve, maybe?
No idea why his carb stuck.
Why is there a serpentine belt pulley on that motorcycle head?

 

[Thepaetsguy]

HMMMM...small automotive carburetor with an accelerator pump and a power valve, maybe?
No idea why his carb stuck.
Why is there a serpentine belt pulley on that motorcycle head?

He has a 40 part series on that Barbie Jeep but the only videos I’m interested in in the moment is the ones where he is running boost.

The video before that one shows he welded and extended the camshaft to drive the amr300 the camshaft spins at half the rpm so he needed a big pulley. Amr come stock with a 2” or so 8 rib serpentine pulley

He removed the slide carb and a butterfly carb from a vw worked perfect.

 

[Thepaetsguy]

In other country’s gear pumps are used for boost. This thread is my test with a smog pump but also a catchall for nearly ANYTHING I find Interesting in the homebrew boost category. They are also straight through configuration. So like a real supercharger in one end out the other.

 

[Thepaetsguy]

Sub $50 test mule and I don’t care if it blows up.. The best thing about cheapo’s

 

[Thepaetsguy]

First test run went flawless

 

[Thepaetsguy]

I have a few small changes to make everything seemless but I’m slowly working towards actually testing this

edit: I will grab a can of paint and do the arm and intake to make it look more kit-like

 

[sparkwizard]

That really looks awesome!!! Great work!

Please keep in mind...if you want to see boost, you need a load on the crank. You need something to slow the crank enough to allow boost to build up in the cylinder. Otherwise, excess intake causes excess RPM. Maybe install a clutch, a chain and put the chain around something that won't move? That way, you can read your boost gauge as the clutch smokes, and you can allow it to cool at idle.
Redneck dyno.

 

[Thepaetsguy]

I do fear the pump exploding during a backfire. I’m gonna lay an old jeep crossmember up against the pump side for the first few times I try to start it. But then again the ride on mower backfires every so often and that Intake is made of plastic..

 

[Thepaetsguy]

With fear of the pump full of gas and air along with my new found fear of the starter clutch backing off I am moving forward.. Hope this isn’t the makings of Chernobyl

 

[Thepaetsguy]

I need three clamps and to gaft on a fuel tank. If the weather improves I’ll try to start it today.

 

[Augiedoggie]

I need three clamps and to gaft on a fuel tank. If the weather improves I’ll try to start it today. View attachment 313664

I'm digging this build....

 

[sparkwizard]

You've put a whole lot of research and work into this project. It really looks great.
I'm certainly hoping it performs to your expectations.
You will get a video when you fire it up, won't you?
I also hope you put some kind of a load, or a drag on the PTO, so you can see your boost.

 

[Thepaetsguy]

You've put a whole lot of research and work into this project. It really looks great.
I'm certainly hoping it performs to your expectations.
You will get a video when you fire it up, won't you?
I also hope you put some kind of a load, or a drag on the PTO, so you can see your boost.

I need to drill and tap a fitting for the gauge still I knew I was missing something. And ya I have a yt channel but haven’t uploaded in YEARS.. I will post any videos of it on there.

Also I planned to slap a clutch on it and throw it on the gokart. I have some huge hills near the house that would put it under a load.

 

[Thepaetsguy]

I'm digging this build....

Even if it doesn’t produce boost I just hope it is easy enough to start and reliable enough. It was fun figuring it all out! Caveman simplicity but no simpler!!

 

[Thepaetsguy]

@Minimichael Sorry I never got pictures of that tank but I ended up using it actually.

@sparkwizard Thanks for reminding me I had this! Was a bit tough to find after the move.