Manual transmission modification?
Question: I have a ford ZF five speed in an OBS powerstroke I would like to upgrade to an EF straight 10 but can't figure out how to mate the input shaft with the motor. So as a short term solution I was wondering if anyone has ever tried to remove the synchronizers on 2-5 leaving the 1st gear syncro to eleviate the need for a clutch brake. I'm not looking for opinions saying this is dumb or why would you not want synchronizers. Point is I enjoy floating my gears an I also find it hard to drive a synchronized transmission after being on the road in my kenworth for weeks. So I am constantly grinding the syncros in my zf 5 by simply forgetting I have to use the clutch. Maybe stupid but I like non sycronized transmissions it's just more fun to me. So any help on removing the syncros or upgrading to a non-sychronized transmission would be appreciated. Thanks in advance.
Best Answers: Manual transmission modification?
If I'm reading you right, you want to drive a snychro trans as if it were a non-snychro? That should be easy for someone who drives OTR. Simply match the engine speed to the gear you want to go into, -exactly- like driving a large-car. As far as changing transmissions goes... should the trans you want physically bolt on to the motor you have, then you will need a clutch that is correctly splined for your transmission that will bolt up to your engine's flywheel. You would not mate the shaft to the motor but to the clutch since the input shaft of the trans does not come into contact with the motor.
The manual transmission will most likely be the safer bet in part because of the assumed dusty operating conditions. The automatic transmission in most SUV's available will very likely feature oil line to a cooling radiator, will be more sensitive to and be harmed more so by skipped transmission fluid replacement. Breaking it down, you'll have more maintenance costs related with an automatic. Fluid change out requires (almost always) a filter with an auto where you simply drop the fluid in the manual and remove metal debris caught by the magnet on the drain plug and keep on trucking (as it were). No matter what, any mechanical device is subject to wear and odds are that if you can buy the rig you can pay to and for service. Good luck and happy trails :)
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these boxes are not as rigid as non synchro(crash box) gears i would like to drive a non synchronised car so when i double clutch each shift or float geara people won't have the weird looking faces ;)
Good answer Chuckles. Not only that, but you would be better off buying a whole new truck than to buy a 5 speed and put it in. You will then have to contend with a custom cut drive shaft to accommodate the longer dimensions of the 5 speed over the 4 speed.
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