I would like to know, which sleeve is better steel or cast iron sleeve? and WERE COULD I POSSIBLY HAVE A SLEEVE PUT INTO ONE OF MY ENGINES

Im not sure it's possible to have one put in? If it is, I see it costly alot of $$$$'s. Just look out for an I/C engine, seems easier to me

well i ordered a 5hp briggs block off of ebay, and the only thing that wasn't described was what kind of bore it had, i have an i/c block but its broke and idk anyone who knows how to weld that kind of metal the block is made out of, aluminum. but when i get it, im going to put all my I/C parts into it so it will still be a beefed up 5hp briggs. but i also have this idea, and idk if any briggs lover will like this, but, IM putting a carburetor off of my grandpa's Tecumseh engine, but this carb actually worked really well, and it fits a briggs too, i already test fitted it on one of my briggs engines. but i like this carb cause, its float feed, and not diaphram pump feed with a bolt on gas tank, those absolutely suck, that is the one thing i hate about briggs, is the carb to tank style, float feeds to me are nicer to work on, cause you don't have a dumb gas tank in the way.

I don't think you could re-sleeve one... I'd hold out for an I/C, but really, there is no real difference in performance, they just last longer then the aluminum sleeved ones. Make sure your carb has the right size jet, if you run it too lean for a long time you'll kill it. To rich, and your cleaning your spark plug everytime you ride it.

well when i get the block im going to see what condition the bore is and if its pretty good for a 90's model ill use it, mean i don't even use my go kart much at all., also the aluminum bores arnt sleeved they are plated, or hardend to withstand a fast hot round thing with sharp rings.( piston - for any newbees)

but i heard you can resleeve one, you have to have it bored exactly as the sleeve or a hair smaller, heat it up to like idk some one said 600' F and then press it in, but mostly cast iron sleeves are made to the engine when they do the casting. But i really wish i can get that briggs formula engine, 7,000rpm around 15-20hp or may be more, idk, but its costly new, 1,000 bucks, or around 500-600 on ebay.

I bot a tractor once that had supposedly been re sleeved ( PO owner never told me- the guy that bot the mower from me with that motor - swapped it to another tractor- told me after he took it to a mower shop after it started burning oil like no tommorrow).

All in all, depends how much you think a engine is worth and how much you want to spend on it- me i just look for another parts tractor that has a running motor.

On my mild mod MTD i used a 16HP tecumseh carb that actually fit ( with minor alteration to the mounting holes ) on my 14.5HP briggs - only problem was the gas would go in, but not into the motor - so i searched around for another briggs carb to fit.