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Hello Guys!
I live in western Washington state and just got a new 160 engine to replace the old briggs on the mower. The deck is fine and the new Honda looks like a nice fit.
My question is, what kind of an adapter will I need for the 7/8" keyed shaft...and more importantly, it looks like I'll need to drill deeper and tap the hole for a bolt. What size tap should I use.
(Probably will depend on the kind of adapter kit I might get, right?) Any rectummendations would be appreciated! Thanks!

Most are 3/8-24 2B tapped but really need to know exactly which GCV160 you got to double check the specs.

Do not drill crankshaft, click on above for adapter plate, blade & bolts which are metric.
What brand mower deck do you have?

This why I said I need the exact GCV160 the op has [type code and probably it serial number] as there are a few threaded internally @ M10-1.25 and even some that are externally thread @ M14-1.5.

This is not a guessing game when it comes to using the right tap as the OP can really mess up the crankshaft if not done right.

do you have a link to the engine you purchased?

I hope this helps: 4.4 HP 160cc Honda Vertical Shaft Engine GCV160 28-1931
Bought it through Surplus Center in Nebraska. I can post the engine or serial number if that helps.
Thanks, Guys!

GCV160LA0 - N5B

Now that clears things up as it not even tapped in the first place. Just a centering point for the lathe.

mechanic mark said:

Honda Power Equipment HR215 SXA Rotary Blade

Shop online for OEM Rotary Blade parts that fit your Honda Power Equipment HR215 SXA, search all our OEM Parts or call at 269-385-1540

www.hondapartsnation.com

Do not drill crankshaft, click on above for adapter plate, blade & bolts which are metric.

Click to expand...

Mark I curious what keeps everything on the PTO shaft if it is not bolted on?

StarTech said:

Mark I curious what keeps everything on the PTO shaft if it is not bolted on?

Click to expand...

If he does not have a Honda mower deck with clutch brake assy. he will be needing more parts.

Mark, As you can tell I don't get many Honda mower is my shop. But that was what I was thinking and I have yet to see a Honda mower with a Briggs mounted in the first place. Actually the blade clutch on a walk behind that I even seen was on a JD mower.

At least we all now what the PTO end looks like so maybe someone can figure out if worth the expense of going ahead or just getting the proper Briggs engine.

Good grief, I could spend more for the parts to attach a blade than for the engine itself! Ridiculous.

I would call/contact any machine shops around, or at least a shop that has a lathe or something so they can drill the hole center in the crankshaft. most blade bolts are around 2" long of course, i'm not sure if the bolts usually go the whole length of the PTO shaft or not.
you could tap it at home, with plenty of patience and lubrication. slow and steady wins the race. of course you'll need to know what size bolt you're going to use so the correct diameter hole can be drilled.

StudebakerTom said:

Good grief, I could spend more for the parts to attach a blade than for the engine itself! Ridiculous.

Click to expand...

Yelp...That why you got to do your homework before ordering just any engine. Got to what the setup is going to be.

That like putting a 700R4 transmission in a "79 Chevy Malibu. You got have everything you need already figured out before you start the project. BTW AAMCO manager bet me $20 that I didn't have one in my car when I told him that the car's transmission needed a 700R4 oil change kit. He was so embarrass he even brought me a steak dinner.

Thankfully, the shaft on the Briggs engine is also 7/8ths in diameter. Using my puller, I removed the collar (?) from the dead engine and after drilling/tapping the new shaft, put it on the Honda. Cinched up good and tight. Honda provided a pilot hole on the shaft, so I could make a good, straight entry and took my time. It all works fine - even with my old blade - and I didn't spend a dime! That engine should last the rest of my life! Thanks for all your helpful advice, Guys!

Awesome! good know!