supercharger

[A Manco Dingo]

hey I have always wondered if you could supercharge a 212, and I mean a really one like the amr300 supercharger of amazon with a good pulley setup it might work. the reason why I ask this is because it could be like a top fuel dragster with hemi v8 and massive superchargers it could work. here are some reference photos I am buying a predator 212 hemi and make it look like one of the top fuel engine's with the massive blower. I might have to rebuild it every time but it is still going to be a fun project. please give me ideas of what I can do like suggestions and stuff I am pretty new to go karts (I bought my go kart last year) but I am really good with cars and I can weld pretty decently

i

 

[bob58o]

Can’t be done.
lol.

 

[bob58o]

I’m working with 10.5 static CR and hoping for 5-10 psi of boost. E-85

 

[bob58o]

The real question on this forum…. Does a suck through roots blower on a 212 require a bypass valve?

The square root of the blower debate… bypass valve?

 

[bob58o]

How I plan on turning mine..

 

[Denny]

What Bob is trying to say is yes you can.

 

[Rat]

hey I have always wondered if you could supercharge a 212, and I mean a really one like the amr300 supercharger of amazon with a good pulley setup it might work. the reason why I ask this is because it could be like a top fuel dragster with hemi v8 and massive superchargers it could work. here are some reference photos I am buying a predator 212 hemi and make it look like one of the top fuel engine's with the massive blower. I might have to rebuild it every time but it is still going to be a fun project. please give me ideas of what I can do like suggestions and stuff I am pretty new to go karts (I bought my go kart last year) but I am really good with cars and I can weld pretty decently

The fact of the matter is that if you want REAL power, you DO NOT want a Hemi. The rules of flow volumetrics applied to a 440CI Hemi, do not apply to a 212cc hemi purely because of scale and 8 cylinders over just one.

With a 212 you are too limited on how much compression and valve lift you can seek out... unlike a wedge head where you can mill a common 18-20cc chamber down as far as 12-14cc without hammering a valve out the top end.

If you're good with cars, you'll take to karts pretty easily once you realize that the majority if not all of tuning rules for a classic carbureted V8 still apply despite being 1/8th the number of cylinders.

There isn't much I can't figure out even if I have to chew on it for a couple days first

 

[A Manco Dingo]

Can’t be done.
lol.
View attachment 146170

if it does work do you put the carburetor In front of the intake of the supercharger or where the carburetor is already in its stock form

 

[Denny]

Draw through carburetor.

 

[A Manco Dingo]

1 so first carburetor then supercharger and if so I am guessing the fuel dose not go through the supercharger

or

the supercharger creates boost then the boost boost into the intake of the carburetor

 

[Thepartsguy]

You need a draw through.. Mike clements Did this and I found the exact model smog pump he used cheap online. I’m copying his engine basically.

 

[A Manco Dingo]

You need a draw through.. Mike clements Did this and I found the exact model smog pump he used cheap online. I’m copying his engine basically.View attachment 146186View attachment 146187View attachment 146188View attachment 146189

and can the fuel go trough the supercharger?

 

[A Manco Dingo]

I plan on using this engine on a simmilar Murray kilowatt build

 

[Thepartsguy]

and can the fuel go trough the supercharger?

Yes it can that is a draw through setup.

fuel gets pulled through the supercharger into the intake.

On a single cylinder I always wondered what would happen if you loaded a smog pump full of misted fuel then backfired.

 

[Big Bob]

You need a draw through.. Mike clements Did this and I found the exact model smog pump he used cheap online. I’m copying his engine basically.View attachment 146186View attachment 146187View attachment 146188View attachment 146189

Hey, give some details on the drive. That looks awesome.

 

[Thepartsguy]

Hey, give some details on the drive. That looks awesome.

I have no info on any of it except the one 5hp smog pump setup by mike clements.

 

[Thepartsguy]

The real question on this forum…. Does a suck through roots blower on a 212 require a bypass valve?

The square root of the blower debate… bypass valve?

5lbs rad cap

 

[A Manco Dingo]

where could I get one of those smog pumps?

 

[A Manco Dingo]

You need a draw through.. Mike clements Did this and I found the exact model smog pump he used cheap online. I’m copying his engine basically.View attachment 146186View attachment 146187View attachment 146188View attachment 146189

what was the smog pump he used or should I use the amr300 supercharger also should I attach the supercharger pulley to the fly wheel or the torque converter

 

[bob58o]

When I first started looking into this, I believe I found info here useful. I posted it into my old threa

supercharging

supercharging small engines

www.elsberg-tuning.dk

Supercharged 212cc Think Tank / Idea Board

Maybe this will happen? Maybe it won't? That is what this thread is for. A place for me to gather some information and ideas. https://www.aliexpress.com/item/Car-Snowmobile-ATV-Roots-supercharger-Mechanical-Turbocharger-gear-Supercharger-for-Displacement-0-8-1-8L-model/32273549916.html AISIN...

www.diygokarts.com

"Well, the smog pump is an airpump, a supercharger is nothing but an airpump, so of course a smogpump can be adapted as one! My experiences with this cheap and plentiful smogpump is all good! But like everything else, the equation must sum up. Pumps have different sizes, and maybe not the size needed!

The most trouble I have had with a smog pump supercharger was a wrong sized pump! Intended use is important too! I have used the smog pump as a supercharger on a racebike for short distance races. I have not used the pump as a part of a daily transport vehicle. Unlike the situation of a racebike, which is "supposed to be" taken apart and inspected, before next racemeeting, a daily driver would present other problems. Will the five roller- bearings inside the rotating drum be washed out, by the fuel- mix present?

The most common, and cheapest, smog pump is the one mounted on GM and Ford V8 engined vehicles from 1969- onwards. Also known as an A.I.R. pump, this device can be found attached to the front of the engine, driven by a v- belt. These pumps gave a steady 5psi reading, when tested for functionality, and their mission was to ingest air, via small tubes to each exhaust manifold, just outside each exhaust port. This air- injection helped igniting the catalytic- converter, reducing emissions emitting the exhaust pipe.

Converting your smogpump into a supercharger goes like this:

Unbolt the rear cover, and pry it apart, but very gently! These are delicate thin- wall castings and you dont want a leaking supercharger. A little trick here is to drift out the two dovels, which lines up everything. After loosening the cover, you have to wiggle it from side to side to extract the cover-mounted axle from the vanes rollerbearings. Once out, you can see the internals. Most significant is the large metal drum, with two vanes protruding 180degrees apart. You can also note the rollerbearing which supports the barrel. If You want to change the direction of rotation, you must pull the bearing support from the drum. A simple special tool must be made for this operation. The support is a casting, and a bit fragile! Once the bearing support is removed, you can see the two cages containing the seals. These cages are asymmetrical because one of the seals has a spring behind it. If you try to run the pump counter- clockwise as is, this spring will be compressed. Result will be a major leak, and at high rpm, the seals can move around and break! So it is vital that the cages are loosened, turned around, and welded back in! If the six? spotwelds are carefully removed, the cages can be loosened without getting out of shape. When re- installing the bearing support, take care not to squish the curved end- seals.

As an alernative you can run a jackshaft, allowing you to run the smogpump as is - see drawing!
Most smogpumps has its air- intake in front, behind the plastic-fan, which also acts as an airfilter. This is no good since its quite impossible to fit a carb or much needed airfilter here. This intake can be closed by applying Devcon, or similar, into the hole."