Colt Case Ingersoll Garden Tractors

@MattA The 648 had a dual pump head. One pump was for the power stearing and the other for travel, loader, and attachements.

Today I took a quick look and measured a few areas of both GT’s. Measurements were the same for both frames. What was different was the engine mounts. The Onan mounts were parallel with the top of the frame but the K321 mounts were on about a 45 degree angle to accept the engine mount bracket with the rubber mounts. After repowering the 646 with a OHV Honda 20hp engine. I fabricated a plate to bolt directly to the frame mounts and drilled holes to fit engine base plate. Rubber between all metal to metal areas. That way it was kept original in case another repowering was desired. I always thought a air cooled VW engine would be terrific. Harry

Spike188 wrote: ↑Fri Aug 30, 2024 8:52 pm @MattA The 648 had a dual pump head. One pump was for the power stearing and the other for travel, loader, and attachements.

The dual section pump was not introduced until the 6000 series, the 648 has simply a larger pump to allow for the additional demand of the power steering. Not the best solution but got the job done.

Bob

@myerslawnandgarden Thanks Bob for the correction. A 648 is still on my want list.

Umm, that would be the 60xx series.. the 648 switched to a B series Onan and added power steering that was plumbed in along side the loader, which made operation of either 'quirky'..

The ingersol 60xx and 70xx introduced the dual pump. 1/2 for tiller - ground drive and 1/2 for loader, power steering,etc

Spike188 wrote: ↑Fri Aug 30, 2024 8:52 pm @MattA The 648 had a dual pump head. One pump was for the power stearing and the other for travel, loader, and attachements.

The larger HP in the 646/648 vs the 644 was IMO mainly for running a tiller or other hydraulic attachment.

As has been pointed out the loader, or backhoe can't really tax the engine.. the only thing that can keep the 16 HP onan in my 646 busy is the Tiller.

sdunt wrote: ↑Sun Sep 01, 2024 9:38 am The larger HP in the 646/648 vs the 644 was IMO mainly for running a tiller or other hydraulic attachment.

As has been pointed out the loader, or backhoe can't really tax the engine.. the only thing that can keep the 16 HP onan in my 646 busy is the Tiller.

This makes a lot of sense. My 644 could lift a lot and when I used the tiller I just went slowly.

I used the tiller on the 646 with the CCK once and wasn’t happy with the results on my hard clay soil. I also tried it on the 444 with the K321, same results. So it’s slower to use the Troybilt with the Honda 13hp but it does a terrific job. Harry

Harry wrote: ↑Mon Sep 02, 2024 10:25 am I used the tiller on the 646 with the CCK once and wasn’t happy with the results on my hard clay soil. I also tried it on the 444 with the K321, same results. So it’s slower to use the Troybilt with the Honda 13hp but it does a terrific job. Harry

Haha, I guess I cheated a little by doing a moldboard plough run before the tiller.

Eugen wrote: ↑Mon Sep 02, 2024 4:18 pm

Harry wrote: ↑Mon Sep 02, 2024 10:25 am I used the tiller on the 646 with the CCK once and wasn’t happy with the results on my hard clay soil. I also tried it on the 444 with the K321, same results. So it’s slower to use the Troybilt with the Honda 13hp but it does a terrific job. Harry

Haha, I guess I cheated a little by doing a moldboard plough run before the tiller.

I did the same thing in our garden . I first turned it with a friends 3x plow and tractor . Then disked and tilled . Now it is disk and till each year in the spring .