Re: Bell housing interchangability/8" clutch in TC XPAG

[Donald Wilkinson]

Hey Sherwood/Bob: digitaldon was able, (some time back), to install an 8" flywheel into a TC bellhousing by grinding appropriate reliefs on the clutch shaft each side of the throwout fork, and also champfer the corners of the shaft bosses on each side to just clear the bumps on the 8" clutch cover. This permits the use of the AHH 5457 competition clutch which by then had superceded the MG.862/97 part specified in the XPAG/XPEG "Special Tuning" book. One hasta use the TD/TF 2 bolt starter with this setup, but it will hold just about any power you wanna pump through it. Bob will know if one kin use the TC starter gear on the 8" flywheel in order to use the TC 3 bolt starter. Dunno if one kin still get the above AHH 5457 clutches, which were used in hot-rodded A's (maybe B's?). Presumeably one could use one of those hip spider flywheels if one thought that the stock TD one was too heavy. It better be strong, though. Those AHH 5457 clutches are a bear. Don TC 7993 Bob wrote: Hi Sherwood, Yes the late TD/TF 8" bellhousing can be made to work on a TC. The bolt pattern is the same so the eight bolts fit to the TC box. However, the locating spigot that bears against the outer race of the ball bearing on the TD/TF bellhousing is smaller in diameter than the TC. Therefore you need to weld and machine a larger diameter spigot on the TD/TF bellhousing. Or machine a groove and insert a steel ring at the correct location to suit the TC box. In addition, the TC clutch cross shaft is 5/8" diameter , the TD/TF is 3/4" , so you need to machine down the TD/TF clutch shaft outer end to 5/8" on the end and cut a new keyway to use the TC clutch operating lever. Down side of the 8" flywheel and clutch is the greater weight and you must use a TF ringgear, therefore a TF starter, which means a new remote starter switch. No problem with gearbox spacing etc. All in all, a lot of work and not worth the effort. Why not use a 7 1/2" diaphram clutch? Better holding power, less weight, no changes to bell housing or starter etc. Same bolt pattern as the TC 7 1/4" clutch, just add two new alignment dowel pins in the TC flywheel as the diaphram clutch has 3 located pins at 120 degrees, the TC has two at 180 degrees. Much easier and the diaphram clutch is better at high engine revs. I have a 7 1/2" diaphram clutch on my race TC and road TC. Bob Bob Grunau 150 Pinewood Trail, Mississauga, Ontario, Canada, L5G-2L1 905-274-4136 Learned listers, I hope to install 8" clutch on car in anticipation of power upgrade. Can the later bell housing, with the larger clutch and pressure plate be installed on XPAGs originally designed for 7.25 clutch? Will the gear boxes be spaced properly and the like? What other questions am i neglecting to ask, or must anticipate, before i undertake such a swap? I know TC ring gear is different from TD/F. Not sure what other issues I need to be addressing. thanks, Sherwood Parker TC, TF, Arnolt Coupe Tempe, AZ USA [Non-text portions of this message have been removed] Yahoo! Groups Links Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/mg-tabc/ To unsubscribe from this group, send an email to: mg-tabc-unsubscribe@yahoogroups.com Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/