We are in the process of attaching a Spyder sourced MT75 five speed to my stock Twin Cam. Spyder supplied a revised fly wheel and ring gear, clutch assembly, along with a new starter motor. We bolted the whole affair together. Bell housing mated correctly to the TC, and all looked good to go.
Luckily my mechanic checked the starter motor pinion gear protrusion length with the ring gear position. Turns out the supplied starter is to short to engage the ring gear, appearing to be ~0.5" short. From inspection the fly wheel and ring gear assembly looks to me to be located as far forward as it can reasonably go without fouling the engine end plate bolts.
Have been communicating directly with Andy and Sean to sort out what is wrong, which has the usual time zone issues from NA to GB. Andy thought the starter motor is correct based on the dimensions and photo’s we supplied him last week. Sending off some more photo’s of the fly wheel and ring gear today, but it really appears correct to us, and the solution will be a different starter with a longer pinion gear nose on it.
Has anyone had experience with this bolt-up? Are starters with different pinion gear depths and the MT75 three bolt configuration available? Any help with a P/N certainly appreciated.
Quick edit for a second question. Where is the speedo cable take-off located on the MT75? I have the speedo drive listed in my shipping documents, but cannot find it as a separate piece in my parts bin. It may already be attached correctly to the transmission, and all is good. Unfortunately the transmission is at the mechanic’s shop, so I can’t check again today. Would like to let Sean know if I don’t have it available in one email if possible. During a quick look last Friday and I did not see it.