Problems?

I was wondering what problems i should expect to run into if turboing a carburated engine. It will only be running 1-2 psi, where can i get a wastegate to actuate that low? Are the internal wastegates adjustabel to set that low? Any info would be great...

why bother 1-2 PSI wont show much of a difference in performance.

1-2 psi wont show a difference on a go cart? lol id be willing to be it would

1-2 psi wont show a difference on a go cart? lol id be willing to be it would
Jayson is right.
It goes something like this---
1-3 pounds boost-------"well I see I'm getting boost" (while flicking the guage with your finger to see if it's working.)
4-7 pounds boost-------"OK here it goes"
8-12 pounds boost------"Whoo-hoo!"
13-18 pounds boost-----"Holy Shit!"
18 pounds is as high as my car goes, but you get the picture.

Jayson is right.
It goes something like this---
1-3 pounds boost-------"well I see I'm getting boost" (while flicking the guage with your finger to see if it's working.)
4-7 pounds boost-------"OK here it goes"
8-12 pounds boost------"Whoo-hoo!"
13-18 pounds boost-----"Holy Shit!"
18 pounds is as high as my car goes, but you get the picture.

20-23 PSI = my god make it stop


24-30 PSI = ludacris speed!!!!!!!!!!! (space balls quote)

Originally Posted by Black Lotus
Jayson is right.
It goes something like this---
1-3 pounds boost-------"well I see I'm getting boost" (while flicking the guage with your finger to see if it's working.)
4-7 pounds boost-------"OK here it goes"
8-12 pounds boost------"Whoo-hoo!"
13-18 pounds boost-----"Holy Shit!"
18 pounds is as high as my car goes, but you get the picture.

20-23 PSI = my god make it stop


24-30 PSI = ludacris speed!!!!!!!!!!! (space balls quote)

30+ PSI = anyone have some toilet paper

You guys are joking right? its a damn go kart....

15psi from a T25=That was 15psi???? Shoulda brought my cd player.

Go for a 4psi setup man. Tial makes 4.xpsi springs. Even on a go kart, 1-2psi isn't gonna make a whole lot of difference. The turbo prolly isn't even efficient that low so power output will further be effected. If I were you, I'd rebuild it because its so easy to rebuild. Less hassle once you boost, ect. Prolly wanna look into adjusting fuel too.

rebuild the engine or turbo? because im already rebuilding the turbo, and i can get a whole engine for 90$ so im not that worried about it...i could live with 4psi though.

Pistons and such are really cheap for small engines. So is machining. Good learning as well.

WHen you boost a car there is about a 3% rule....that is for every pound of boost, you gain 3% over stock power.

For what a turbo kit costs, you'd be better off getting headers and other cheaper more effective parts. Otherwise use more boost.

..........do you understand what i am doing here? i picked up a small garrett turbo along with 7 others that i am rebuilding. The garrett that is really small looks to be like a T2 or something. Its very small, and i have a go kart in my garage....go kart +micro turbo = lots of fun on a cheap project....

How are you compensating for the extra air....are you using a larger carb....or are you just leaving it alone?? I have a go kart w/ a little Briggs and Straton engine on it and i thought this sounded like fun.

The first post i had....i didn't really read the whole thing beforehand....sorry.

well ive been searching around and im going to try and buy a performance carburator that is made for kart racing...im not really sure yet

When you figure out what you're going to do....you should let me know!! And if you have any of the same turbos left....i might be interested.

I know that this is an older post but I was reviewing and I started to wonder.....

on a go kart engine, there is not pressurized oil system. Splash only.
How would you oil the turbo?

I know that this is an older post but I was reviewing and I started to wonder.....

on a go kart engine, there is not pressurized oil system. Splash only.
How would you oil the turbo?

well if its a water cooled turbo maybe. You could hook up some kind of small water pump system or oil pump system.

when chevy made the corvairs they didnt even use a wastegate to control bost: something about a small one throat carb to decrease air efficiency. just food for thought anyway...

I know that this is an older post but I was reviewing and I started to wonder.....

on a go kart engine, there is not pressurized oil system. Splash only.
How would you oil the turbo?

This was another problem i was trying to find a solution for. IF anyone has any ideas, let me know. maybe like some kind of jimmy-rigged oil pump and filter?

Weld a gear (sprocket) onto a small block chevy oil pump... tap and thread so to allow the inlet and outlet to have barbed fittings put a tube going to a 1 quart container (or larger) then attach pressurized side of pump to turbo place a return line back into the holding tank and place a line going to the suction side of the pump........ probably want a vent onto the container.... also on the not of 30 psi I got a 280zx that in theory I'll be able to run 28 to 32 psi of boost....

I thought I was the shit... My buddy then told me about someone who was running a dual turbo at 58 psi........... (dual as in not twin but inline.. where the exhaust goes through the larger turbo then the smaller (exhaust side) and charges through the smaller then through the larger.... I think thats how it went... maybe the other way either way I was like what....... Yeah needless to say it was the same car I saw at the drags earlier this summer... that was the baddest turbo car I ever saw... It coughed (poped out the carb) burped (sucked the cough back up) then farted (spewwed a line of flaming gas out the tailpipe) and launched out of the whole like a jet.......... A white 69 corvette friggin boosted... But it launched that same way everytime.... the guy said it has no power at all off boost (I was like off boost when, at the line???)

anyway til next time.

mount a sprocket on the shaft used to power the tires rig up a brace so the pump is stable (and inline with the apposing sprocket... and you want it to be able to adjust to eliminate slack


or a foil bearing ....Some sort of new bearing that doesnt use oil I dont know if it ever got off the ground yet but its in the works.. good luck though..

2 pounds of boost with a turbo system may produce less hp than a Nice free-breathing nat aspirated set-up and be far more complex and expensive.

28 - 33 pounds = "what was that noise? what is that smoke in the mirror?"

Weld a gear (sprocket) onto a small block chevy oil pump... tap and thread so to allow the inlet and outlet to have barbed fittings put a tube going to a 1 quart container (or larger) then attach pressurized side of pump to turbo place a return line back into the holding tank and place a line going to the suction side of the pump........ probably want a vent onto the container.... also on the not of 30 psi I got a 280zx that in theory I'll be able to run 28 to 32 psi of boost....

I thought I was the shit... My buddy then told me about someone who was running a dual turbo at 58 psi........... (dual as in not twin but inline.. where the exhaust goes through the larger turbo then the smaller (exhaust side) and charges through the smaller then through the larger.... I think thats how it went... maybe the other way either way I was like what....... Yeah needless to say it was the same car I saw at the drags earlier this summer... that was the baddest turbo car I ever saw... It coughed (poped out the carb) burped (sucked the cough back up) then farted (spewwed a line of flaming gas out the tailpipe) and launched out of the whole like a jet.......... A white 69 corvette friggin boosted... But it launched that same way everytime.... the guy said it has no power at all off boost (I was like off boost when, at the line???)

anyway til next time.

Check out the dsl boys pulling superstock tractors. They may be using about 200 pounds of boost now?

Check out the dsl boys pulling superstock tractors. They may be using about 200 pounds of boost now?

200 seems a little high. my friend is running 54psi on his QSB though.

to answer the ORIGINAL question....carb(s) work just fine with a blow thru, if you know how to reference the float bowl pressure, and are extremely intimate with carbs. Tuning any carb takes experience and knowledge. And....a wbo2 really helps!

That being said, some applications aren't as friendly to boost as others. But most can be made to work...some work extremely well, with flawless drivability....with proper tuning.

Many people believe its nearly impossible. And IMO, those people are either perpetuating a myth that they have heard, or are one of the few unfortunately fellows that found a very bad carb/engine config to attempt to turbo, due to short comings of the carberator(s). The right carb on the right motor, is actually extremely easy to get right.

whoa...old ass thread. I dont even have a cart now. Ive moved onto turboing real cars ;) And then blowing engines too...

I've made several of my turbos wastegate arms adjustable.

Just by adjusting the length you can change them from no boost to maximum boost.
It's not quite optimal, but it does work.