AR-5, r-154 Anybody actually done this

I am wanting to do this on a magnum powered BMW I am building. I Know that the ma5 Colorado transmission has an input shaft about 3/8 inch longer than the ax15. Did you have any clearance issues such as the input shaft bottoming out on the pilot bearing? I have been investigating the possibility of swapping the ma5 input shaft with one from a ax15, that would make this swap easy but I cannot get a straight answer.
Personally I don't believe the claimed torque ratings on this transmission. The Supra and Lexus guys a making huge numbers with this tranny with little failures!

So with our 95 bell hosing we have zero issues. Its actually pretty dam perfect for the input shaft length. Did the math and we had .012 inch of clearance. I am not sure with use on a 97+ bellhousing. I am finding that the first gen dakota bellhousing is different from the 97-00 style. Different starters and different slave cylinders tho we are using the 97+ style. We did end up going with a different pilot bearing. Originally had the colorado one but found making a spacer was going to be hard. So a teammate went into a bearing catalog at his work and found a different one. Shown here.

Bearing we used on top. Spacer made up. Colordo pilot bearing on the bottom. Bearing is SKF brand part number 6202 2RSJEM.

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Spacer is a little loose. We used loctite. If it becomes a problem we will make a new spacer. Tho advance adapters had this bearing.

716120 : Pilot Bearing .590 ID X 1.818 OD | Advance Adapters

That might be the one to go with. We have not tested but its only .005 to big on the Inner Diameter and the Outer Diameter was close. Might need some light sanding on the crank side. We measured 1.812 this one is 1.818. I think it could be tapped in.

For the clutch we are using a dakota flywheel and clutch setup. We are using a clutch disc from a 1985 camaro with the t-5. Its the right size with the 26 inch spline count.

Right now we are going to get a Wilwood pedal as well as a few adpaters to make the slave line input fit for a an-3 line. None of that crappy quick disconnect fittings that you can not find anywhere.

Car started the first time over the weekend with the transmission bolted. Have some work to do but at least it starts.




If you have any other questions let me know. Always welcome to send me a pm.