John Deere Gator Forums banner

1 - 20 of 23 Posts

·
Registered
Joined
·
8 Posts
Discussion Starter #1
Hey Guys

Ok, so after looking around for a good used Kawasaki FD620d engine under $600 (and not finding one) in very good condition. We have found a 22hp Predator engine for sale locally. Guy bought it, never used it, hasnt even put oil in it yet..and wants $500 for it. in the box.

Problem is the old Kawasaki has the Tapered shaft for the driven clutch for the gator, and this 22hp Predator has has a 1 inch straight shaft. CAN I "adapt" the driven clutch from the Gator, or do I need to buy a different clutch to fit a 1 inch straight shaft? Does anyone have any part info or part #'s to do this?

Thanks again for any input.
 

·
Registered
Joined
·
727 Posts
The clutch on the engine is the primary/drive clutch. The driven clutch is located on the transmission.

You can't really adapt your clutch to the straight engine shaft without a fair bit of machining and making an adapter. Much easier is to get a new primary clutch with a straight bore and keyway. Several years ago I replaced the stock Briggs in my Gator which had a tapered shaft. The new Honda engine had a straight shaft with a keyway. It was a straightforward swap and all I need to make was a spacer to properly position the new clutch so it would line up with the secondary clutch.
 

·
Registered
Joined
·
152 Posts
i dont see how you would adapt a tapered clutch to fit a straight shaft... but this brings up another possible alternative, could a different clutch be used in place of the JD one?
 

·
Registered
Joined
·
727 Posts
Yes, another clutch is easy. The John Deere clutches are made by Team Industries. Their retail clutches are sold by Venom Products. If you contact them do NOT mention you are putting the clutch in a John Deere product. They have a non-disclosure non-compete contract with Deere. They are very nice and helpful but will almost hang up the phone if you mention John Deere.
 

·
Registered
Joined
·
8 Posts
Discussion Starter #5
yep...as Dane said..another clutch is easy. After talking with some other folks and doing some of my own research on the various clutches...the Comet 780 drive clutch, is the exact same clutch, but instead of tapered, it's for a 1 inch straight shaft.
 

·
Registered
Joined
·
152 Posts
yep...as Dane said..another clutch is easy. After talking with some other folks and doing some of my own research on the various clutches...the Comet 780 drive clutch, is the exact same clutch, but instead of tapered, it's for a 1 inch straight shaft.
Wow this is really good info, this changes everything for those of us who will repower!

Are there key specs that they need to know when you describe the clutch you need from them? What is it based on? Obviously shaft, but do they need to know operating RPM? Ect @dane
 

·
Registered
Joined
·
727 Posts
When I ordered mine I spoke with their tech support and let them know my engine rpm range (idle rpm and max rpm) and with that they were able to suggest a spring size. Then if you want you can try different springs to fine tune the performance to your liking. The first number (initial force) of the spring affects the engagement rpm and the second affects how quickly it upshifts.

For example if your machine is heavily loaded down you can pick a spring with a bigger second number which will make the clutch stay at a lower gear ratio longer. If you want your clutch to engage at a lower rpm then pick a lower first number.
 

·
Registered
Joined
·
152 Posts
@dane thanks for explaining. this really opens up an endless range of options for repowering these things! would be awesome to stuff in a small honda engine into an old machine and not deal with JD parts
 

·
Registered
Joined
·
727 Posts
When I repowered I went from the stock 18 hp to 23 with the Honda. It didn't do anything for my top speed but because I left the gearing the same but the extra power was very noticeable with acceleration and hill climbing.
 

·
Registered
Joined
·
152 Posts
When I repowered I went from the stock 18 hp to 23 with the Honda. It didn't do anything for my top speed but because I left the gearing the same but the extra power was very noticeable with acceleration and hill climbing.
Say you need to move the drive clutch, how do you move it laterally for alignment with the transmission
 

·
Registered
Joined
·
727 Posts
First I installed the engine so it would come out pretty close. Then I made a shim that fits over the engine's shaft to fine tune the alignment.
 

·
Registered
Joined
·
1 Posts
gheenpoppy

Is the taper shaft thick so i can chuck it up in lathe bore it out straight & what size is it? Thanks for any help?? Just got a new clutch hate to waste it??
 

·
Registered
Joined
·
1 Posts
My teenage son and I have been attempting a Predator engine swap on an old 1996 6x4. We have the engine in made various modifications to the exhaust etc so it would fit. The thing we are stuck on is the wiring... What is the best way to wire these? The original engine seems to have so many wire harnesses and various relays that my head spins just looking at it. Does anyone have any suggestions to get us on the right track to connecting the original wiring to the new predator wiring?
 

·
Registered
Joined
·
1,240 Posts
The wiring is much easier to understand with a good wiring schematic and associated support documentation. This can be found in the workshop manual. These manuals are great for the DYI since it has information on test procedures and specification for the sensors and sections on the theory of operation for major systems. I've seen too many forum members waste a lot of time and money because they don't fully understand how the various systems work or have the information to properly test components.

Typically it is best to start your own thread, so the title better represents the sought after information.

Good luck on the repower!
 

·
Registered
Joined
·
1,240 Posts
You can find this even cheaper, $10-15
Your statement would be of greater value if you added a link to the potential source(s). Perhaps the next person who stumbles across the info can benefit.
 
1 - 20 of 23 Posts
Top