21 hp vanguard v-twim swap with 17hp intek single

binckley

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thanks for the info/I might have not made it clear what I was doing/my rider has the 21 hp vanguard v-twin on it now with a wiped cam.i have a good 17 hp ohv single laying around and was just wondering how much trouble was the swap would be or to just invest back into the v-twin
 

darrinster

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thanks for the info/I might have not made it clear what I was doing/my rider has the 21 hp vanguard v-twin on it now with a wiped cam.i have a good 17 hp ohv single laying around and was just wondering how much trouble was the swap would be or to just invest back into the v-twin

I would fix the Vanguard if possible. I installed one in my Husqavarna which had a Kohler Courage that crapped out. Love the Vanguard. Lots of power, never slows down.
 

bertsmobile1

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I would be inclined to do the same.
Vanguards are generally a substantially better engine.
Get a piece of corn flake packet, cut a hole in it big enough to clear the PTO then punch out the mounting holes
Pull the drive pulley off your mower and see if you have a set of holes that will line up.

next thing to consider is the alternator.
The Vanguard would have been fitted with an electric PTO clutch.
If the Intek also had an electric clutch you are fine, If not it might need an alternator upgrade.

Obviously the mufflers will not fit and that can be a problem.
AYP did use singles but I can not be sure if they used the same frame pressings for the twins as they did for the singles.

The Intek will struggle a little but that will just mean driving a little slower.


As the Vanguard is dead, it has to come out any way .
So if the mower is in good nick, fit the Intek.
Make up a cross over loom to wire it into the mower while you take your time repairing the Vanguard.
Then you have the option of keeping the intek if it works for you and flogging off the Vanguard.
A used Intek will not get much but a used Vanguard is worth a lot more.
 

Tinkerer200

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"Genearally you can swap any engine of the same brand & type
Flat heads with flat heads
OHV's with OHV's"

I think you are painting with much too wide a brush. Actually many OHV and flathead B&S engines WILL directly interchange with same mounting holes. ALSO. many Kohler singles share the same mounting holes with both OHV and flathead B&S singles.Other factors besides mounting holes have to be considered when switching engines. V twins as OP asked about are another mater.

"Are you saying there is a set for kohleor and one set for briggs single?"

NO, see above.

You can easily make a paper or cardboard template to see if the mounting holes match and IF not, carefully locate where the crankshaft was positioned for engine one, If not use the same template to mark and drill the holes you need for engine two.

"I repower a lot of old flathead mowers with OHV's and I always have to drill a new set of mounting holes as the OHV ones are further apart than the flat head one"

???

Walt Conner
 
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