S-10 Kubota Diesel Conversion
Look back through my thread, I used aluminum plates, 1 was 3/4" thick and 1 was 7/8" think. I had the plates water-jet cut and then I did all my dowel pin work and bolt patterns on a drill press, nothing fancy just takes measuring and time. I used the Kubota flywheel machined/milled flat and indexed the chevy clutch/pressure plate onto it. It all depends which way you're gonna go. As far as I know there are no "off the shelf" adapters & flywheel kits. There has been a lot of discussion about them and some have made the adapter plates but without a matching flywheel I'm not sure how you make it work.
I'm not sure if I'm allowed to say web site names or where to buy here - lemme know if I'm stepping on toes and I'll edit it. I haven't used any of these products and have no affilliation, just tossing out what I have seen so far.
Gaines12 and YellowGTO were making adapter plates. Gaines12' was for a Ranger V6 trans and on parts-bin the last time I looked. I think YellowGTO's are available on fleabay, as well as the classifieds here, for a SBC adapter for both trans and flywheel/starter. They look really nice and should save a bunch of headaches for folks like me. The cost is prohibitive for me, however, and both leave me hanging for either a T5 or G238 transmission. It's hard for me to bring myself to write a check for an adapter that is more than I spent on the engine and not fit the transmission I want to use. I priced aluminum plate though and I think that is where the majority of the cost is in the adapters, much less the machining costs. Yikes!
Machining the Kubota flywheel down seems like the plan, but I've been looking into Japanese junk like Mitsubishi's or I think Suzuki where they use the same style of recessed flywheel, then see if I can use a small Ford clutch with it for a T5 transmission. I can't remember where I read on here that the existing Kubota bell is #4 SAE sized. I'd like to talk more with the folks at Phoenix adapters since one of my thoughts was to use a SAE adapter to SBM and use a 6 speed Getrag from a Dakota. The folks I talked to out there said it needed a 2" crank adapter if you use their bellhousing adapter. I haven't been able to get to the measuring of depths yet, still trying to get my garage "ready" (read, get the current project car out of the garage.)
Sorry for the derail, this is my current hangup with getting a conversion going so I'm a little consumed by it. Maybe a thread on adapter parts would be a better place for my a.d.d. ... apologies.
Gaines12 and YellowGTO were making adapter plates. Gaines12' was for a Ranger V6 trans and on parts-bin the last time I looked. I think YellowGTO's are available on fleabay, as well as the classifieds here, for a SBC adapter for both trans and flywheel/starter. They look really nice and should save a bunch of headaches for folks like me. The cost is prohibitive for me, however, and both leave me hanging for either a T5 or G238 transmission. It's hard for me to bring myself to write a check for an adapter that is more than I spent on the engine and not fit the transmission I want to use. I priced aluminum plate though and I think that is where the majority of the cost is in the adapters, much less the machining costs. Yikes!
Machining the Kubota flywheel down seems like the plan, but I've been looking into Japanese junk like Mitsubishi's or I think Suzuki where they use the same style of recessed flywheel, then see if I can use a small Ford clutch with it for a T5 transmission. I can't remember where I read on here that the existing Kubota bell is #4 SAE sized. I'd like to talk more with the folks at Phoenix adapters since one of my thoughts was to use a SAE adapter to SBM and use a 6 speed Getrag from a Dakota. The folks I talked to out there said it needed a 2" crank adapter if you use their bellhousing adapter. I haven't been able to get to the measuring of depths yet, still trying to get my garage "ready" (read, get the current project car out of the garage.)
Sorry for the derail, this is my current hangup with getting a conversion going so I'm a little consumed by it. Maybe a thread on adapter parts would be a better place for my a.d.d. ... apologies.
Last edited by Beagle; Jul 7, 2014 at 06:57 AM.
There is another adapter similar to YellowGTO's on flee-bay. I like YellowGTO's better and the pricing, if purchased through this site, is better. Win - win. (I have not seen the actual part.)
YellowGTO has stated that this fits the SBC flex plate. That tells me auto trans. I believe the flywheel would work for the manual with the same adapter. Can anyone confirm this? Another question, what about the pilot bearing. Does it need anything to fit/use?
With my adapter you can run auto or manual. 153 or 168 tooth. Pilot bearing is the stock off the shelf pilot for small block.
you use all stock OEM Chevy parts. Only exception is if using a 168 tooth flywheel/ flexplate you have to use an aftermarket starter because my adapter only allows for inline bolt pattern starters. I will try to get a video of my adapter up on YouTube this week sometime.
also if you are using the flywheel/ flexplate from a 1pc rear main seal motor 86( I think) and newer you have to have the it neutral balanced.
anything that bolts behind a small block Chevy you can bolt behind you Kubota with my adapter.
I am working on the small block ford still, finding time for r&d is hard right now.
also In line will be
jeep 4.0
Ford 3.0
and hopefully others as time permits
sorry for mudding up your build thread. Most of this info is in my thread also
Thanks
Ken
you use all stock OEM Chevy parts. Only exception is if using a 168 tooth flywheel/ flexplate you have to use an aftermarket starter because my adapter only allows for inline bolt pattern starters. I will try to get a video of my adapter up on YouTube this week sometime.
also if you are using the flywheel/ flexplate from a 1pc rear main seal motor 86( I think) and newer you have to have the it neutral balanced.
anything that bolts behind a small block Chevy you can bolt behind you Kubota with my adapter.
I am working on the small block ford still, finding time for r&d is hard right now.
also In line will be
jeep 4.0
Ford 3.0
and hopefully others as time permits
sorry for mudding up your build thread. Most of this info is in my thread also
Thanks
Ken


