Grasshopper 718 Predator 22HP Swap Complete

[matt707]

Hello,
I am new to the forum and just wanted to share my project. I purchased my 718 used in 2016 with 630 hours on it. It had the Vanguard 18hp engine that worked ok til I got it out this spring. I was bringing it in for Spring tune up and it threw a rod. The machine now has 770 hours on it and it is still in very good shape. I kicked around the idea of buying a replacement vanguard but, a friend mentioned that the Predator 22HP from Harbor Freight might be a better choice?? I like to tinker so, I purchased the Predator. This was a relatively easy swap. Crankshaft height and diameter are the same as the Briggs. I had to buy a flywheel adaptor from Performance 670 for around $70 and a new ( Longer ) throttle and choke cable for $25.00. The Predator is a bigger engine but, fits on the 718 easily. I will attach some photos below

 

[ran]

Hello,
I am new to the forum and just wanted to share my project. I purchased my 718 used in 2016 with 630 hours on it. It had the Vanguard 18hp engine that worked ok til I got it out this spring. I was bringing it in for Spring tune up and it threw a rod. The machine now has 770 hours on it and it is still in very good shape. I kicked around the idea of buying a replacement vanguard but, a friend mentioned that the Predator 22HP from Harbor Freight might be a better choice?? I like to tinker so, I purchased the Predator. This was a relatively easy swap. Crankshaft height and diameter are the same as the Briggs. I had to buy a flywheel adaptor from Performance 670 for around $70 and a new ( Longer ) throttle and choke cable for $25.00. The Predator is a bigger engine but, fits on the 718 easily. I will attach some photos below

Does it make good power and every thing work alright? Thanks for sharing thats interesting.

 

[Jpope101]

I’m doing the same thing same model same engine have any tips, try to turn it over last night pto shaft snapped off the flywheel and engine won’t stay running think I have a wire crossed any tips would be nice thanks

 

[slomo]

Do those Predator engines have spare parts we can buy? Or do you need a cousin that lives in China to get them for us?

slomo

 

[bertsmobile1]

Do those Predator engines have spare parts we can buy? Or do you need a cousin that lives in China to get them for us?

slomo

The first reason why they are so cheap is they are assembled in CHina
The second reason is they have no warehouse in the USA for either engines nor parts sucking up profits made on whole engines so they are a parracite feeding off Honda who do have a very expensive warehouse full of parts to keep their customers engines running.
SO the only spares are the ones that HF order with the new engines .
Welcome to the brave new world of retail .

 

[Wisco_Andy]

I'm looking to do the same thing, predator 670 on a grasshopper 718. Do you have a link to the performance 670 hub adapter? I see they might go by the name "performance machine & design" now, but I'm just not sure which adapter exactly to get.

 

[Wisco_Andy]

I’m doing the same thing same model same engine have any tips, try to turn it over last night pto shaft snapped off the flywheel and engine won’t stay running think I have a wire crossed any tips would be nice thanks

Any update on your engine swap? I have a grasshopper 718 I'm looking to put a predator 670 on. Think there's an adapter issue, not sure if I'm finding the right part. Do you have a link to the part, by chance?

 

[Clsharrow]

Hello,
I am new to the forum and just wanted to share my project. I purchased my 718 used in 2016 with 630 hours on it. It had the Vanguard 18hp engine that worked ok til I got it out this spring. I was bringing it in for Spring tune up and it threw a rod. The machine now has 770 hours on it and it is still in very good shape. I kicked around the idea of buying a replacement vanguard but, a friend mentioned that the Predator 22HP from Harbor Freight might be a better choice?? I like to tinker so, I purchased the Predator. This was a relatively easy swap. Crankshaft height and diameter are the same as the Briggs. I had to buy a flywheel adaptor from Performance 670 for around $70 and a new ( Longer ) throttle and choke cable for $25.00. The Predator is a bigger engine but, fits on the 718 easily. I will attach some photos

I'm looking for some help with the wiring. Can you attach some pictures or help with some descriptions. I've seen some people use the key on the motor and others use the key on the mower?

 

[Clsharrow]

I'm looking to do the same thing, predator 670 on a grasshopper 718. Do you have a link to the performance 670 hub adapter? I see they might go by the name "performance machine & design" now, but I'm just not sure which adapter exactly to get.

Predator 670 Universal Drive Hub Adapter (pt num 6015)

Predator 670 Universal Drive Hub Adapter. We’ve scribed lines on 1/8″ increments at 45, 60, 90, and 180 degrees. Allows customer to drill and tap for their application.

performancemad.com

 

[slomo]

Hello,
I am new to the forum and just wanted to share my project. I purchased my 718 used in 2016 with 630 hours on it. It had the Vanguard 18hp engine that worked ok til I got it out this spring. I was bringing it in for Spring tune up and it threw a rod. The machine now has 770 hours on it and it is still in very good shape. I kicked around the idea of buying a replacement vanguard but, a friend mentioned that the Predator 22HP from Harbor Freight might be a better choice?? I like to tinker so, I purchased the Predator. This was a relatively easy swap. Crankshaft height and diameter are the same as the Briggs. I had to buy a flywheel adaptor from Performance 670 for around $70 and a new ( Longer ) throttle and choke cable for $25.00. The Predator is a bigger engine but, fits on the 718 easily. I will attach some photos below

What was the rpm at when she tossed the rod? Ever put a tach on her to monitor rpm's?

Curious a Vanguard made in Japan tossing a rod. Guess anything is possible.