DIY: Rebuilding your transmission
12-02-2010, 08:59 AM
#37
Bravo on the write up! I'm sure this will encourage more folks to fix their transmissions rather than just replacing them. I had to crack my tranny open in my old GSR years ago (like someone else) due to the input shaft bearing going out (I can't remember if that's the main or countershaft), and another time to install a quaife. The first time you crack open a tranny is a little daunting, but if you're careful/patient, all should be fine.
A couple quick questions for the OP.. I'm not sure how it works for the s2000 tranny, but I remember honda didn't sell synchros individually years ago. You had to buy the whole gearset if you wanted to change the synchro. Is this still true today? It would be nice if they sold individual synchros, as the gears rarely need to be replaced.
A couple quick tips.. After full assembly, of course making sure the input shaft spins freely and you can find all the gears via the shift rod is a good simple test. Also, specific seal drivers may or may not be needed/necessary. You can often times use large sockets if you want to save a couple bucks.
A couple quick questions for the OP.. I'm not sure how it works for the s2000 tranny, but I remember honda didn't sell synchros individually years ago. You had to buy the whole gearset if you wanted to change the synchro. Is this still true today? It would be nice if they sold individual synchros, as the gears rarely need to be replaced.
A couple quick tips.. After full assembly, of course making sure the input shaft spins freely and you can find all the gears via the shift rod is a good simple test. Also, specific seal drivers may or may not be needed/necessary. You can often times use large sockets if you want to save a couple bucks.
12-02-2010, 06:47 PM
#39
Registered User
Thread Starter
In response to above questions:
I took my time and worked carefully and had to go back and redo some things because I had forgotten to install something or had something out of alignment, but I did the entire transmission from removal teardown and rebuild to reinstallation in 4 days working as I could when I got off work and 2 full days off. Knowing what I know now and having all the tools together already I could probably do it all in 2 days now, maybe even in a day if I pushed it. As I stated before, shifting is as new now. No problems at all.
@freezingcoffee: I am not sure what you mean in your post...could you rephrase? If you are asking if you can swap AP2 synchros into an AP1 transmission the answer is yes I believe so, for certain gears that are the same size in both AP1 and AP2, I am not sure which gears are the same but a search should yeild that answer....in fact I believe if you order a new AP1 gearset the synchros it comes with are the upgraded carbon ones already and you can no longer get the old style double cone, I would call when ordering to be sure.
As far as I know you can only buy the synchros as part of a set, i.e. 1st and 2nd gearset comes with a new 2nd gear and synchros/sleeve/hub for the 1st and 2nd gear..3rd and 4th gearset comes with a new 3rd gear and synchros/sleeve/hub for 3rd and 4th gear....5th and 6th gearset is just the synchros/sleeve/hub for 5th and 6th gears. Reverse set is also just the synchro/sleeve/hub. You can only get the synchro for a particular gear by buying the entire gearset for the synchro you need.
I took my time and worked carefully and had to go back and redo some things because I had forgotten to install something or had something out of alignment, but I did the entire transmission from removal teardown and rebuild to reinstallation in 4 days working as I could when I got off work and 2 full days off. Knowing what I know now and having all the tools together already I could probably do it all in 2 days now, maybe even in a day if I pushed it. As I stated before, shifting is as new now. No problems at all.
@freezingcoffee: I am not sure what you mean in your post...could you rephrase? If you are asking if you can swap AP2 synchros into an AP1 transmission the answer is yes I believe so, for certain gears that are the same size in both AP1 and AP2, I am not sure which gears are the same but a search should yeild that answer....in fact I believe if you order a new AP1 gearset the synchros it comes with are the upgraded carbon ones already and you can no longer get the old style double cone, I would call when ordering to be sure.
As far as I know you can only buy the synchros as part of a set, i.e. 1st and 2nd gearset comes with a new 2nd gear and synchros/sleeve/hub for the 1st and 2nd gear..3rd and 4th gearset comes with a new 3rd gear and synchros/sleeve/hub for 3rd and 4th gear....5th and 6th gearset is just the synchros/sleeve/hub for 5th and 6th gears. Reverse set is also just the synchro/sleeve/hub. You can only get the synchro for a particular gear by buying the entire gearset for the synchro you need.
12-02-2010, 07:02 PM
#40
Registered User
Thread Starter
I guess they package them this way to make money on it, kind of like how you can't get a TPS without buying the whole throttle body for ~$450.....
The synchros themselves probably only cost $20 or $30 each and like you said the gears seldom need replacing and that is where the money is...
The synchros themselves probably only cost $20 or $30 each and like you said the gears seldom need replacing and that is where the money is...