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Discussion Starter #1
I have a buddy that has a blown up Toro I think 524 single stage 2 stroke engine and he was wondering if a 4 cycle would work on that type of machine. My opinion is get something else but he likes that one. I know the newer single stages are all 4 strokes but for him is it worth the money, I say, No. Anyone else ever done a swap like this?
 

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anything is possible with enough money or skill but realistically he could buy a used single stage machine for the cost of 4 stroke conversion. plus you are probably better off buying a machine that was built with a 4 stoke.
 

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1971-72 910962 s/n-03101 att.-910995 s/n-048006 TEC# H70-130067A s/n-1218R
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I can’t see why not! Some measurements will need taken. I’m sure it wouldn’t be very difficult. If you find one that will bolt right on and has same pulley length and size. No different than going from 4 to a 4. Now I am certainly no Toro expert, but when you love a certain piece of equipment “old” and made strong, and all it needs is motor swap or repair, has to be easily doable.
 

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it likely wouldn't be that easy. it is not just about measurements. you also have to consider the weight and shape difference. 4 strokes are usually heavier and larger than 2 stroke so you would have to do a lot of cutting and fab to make it work. also if you don't brace things up right it could likely cause it to flex or bend like it shouldn't especially after cutting things up to make the engine fit.
 

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your friend most likely has a toro ccr2450. i took a toro ccr3000 engine ( 2 cycle ) and put it on a ccr2450 frame years ago. i already had all the parts so i didn't need to buy anything but nuts, bolts, and belts. the motor bolted on with no problems but but the fuel tank was too far out of alignment. i got a belt for a ccr 2450 and ccr 3000, i don't remember which one i used and i know i used a few longer bolts and washers to align the fuel tank. i got it to work even though i don't like it, won't loan it out, and won't sell it. all in all i don't think it was worth the time something i think your friend will find out if he can do the swap, find another ccr 2450 for your friend
 
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Discussion Starter #6
Thanks guys, you are the best. I am sure I will be the person doing the work, as usual but he pays well so I like that.
 

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Discussion Starter #7
your friend most likely has a toro ccr2450. i took a toro ccr3000 engine ( 2 cycle ) and put it on a ccr2450 frame years ago. i already had all the parts so i didn't need to buy anything but nuts, bolts, and belts. the motor bolted on with no problems but but the fuel tank was too far out of alignment. i got a belt for a ccr 2450 and ccr 3000, i don't remember which one i used and i know i used a few longer bolts and washers to align the fuel tank. i got it to work even though i don't like it, won't loan it out, and won't sell it. all in all i don't think it was worth the time something i think your friend will find out if he can do the swap, find another ccr 2450 for your friend
I have a 3650 but I like it too much and he knows that. Does anyone sell ne 2 cycle engines these days?
 

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do the 2-stroke engine run at a different RPM than the 4-stroke?? Ive never used a 2-stroke snow removal implement and wonder if they run much higher in RPM.. in which case.. you might need worry about pulley sizing on a comparable 4-stroke mill to get the same operating RPM without going in an engine RPM range a 4-stroke just isnt meant to be in... asides from that... itl work.. somehow ;)
 
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