Gearbox's , Easy to dismantle / re-assemble?


jamie-gings said:
big problem do i got the box back together and onto the car and now i only have 1st,3rd and reverse...i feel like crying. and when the gearstick is in neutral and i try start the car it jumps as if its in gear
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Do you try selecting all the gears before putting it back on the car? Fit the 2 selector fork detent ball bearings?

Id hazard a guess and say the same as Steven that the selector mechanism or rod is misaligned or not completely in neutral.
 
stevenEK9 said:
Jamie - as long as the synchro hubs were operating as they should when you assembled the box, i would guess that the selector assembly in the corner of the box which works the selector forks has been put together wrong :((
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ya the synchro hubs were all working. is there a possibility that the hubs were not put into nuetral ?? or do they have to be in nuetral for it to go back together right.

i think its a problem in the box anyway:angry2::angry2:
 
seems like the hardest part is finding a clean area to work on the box, has anyone got the book listed below? it has an entire section based on maintenance and modification of the B series gearboxes. Also neil it may be worth fitting upgraded synchros at the same time as opening the box, theyre quite reasonable from Mfactory. Im just assembling a list of tools, manuals and parts needed before i start on a spare box

How to Rebuild and Modify Your Manual Transmission Robe on eBay (end time 20-Mar-11 17:03:40 GMT)
 
This thread is very interesting.
See how many reply's in 3 day's.

I feel like we need a sticky thread about dismantle and re-assemble for at least an EK9 S4C Box or S80 box for the job needed to do a final drive work or changing gears.

If we can get this here, I think MFactory will be selling lot more final drive 4.7 and 4.9 and also lot more gears and synchro's.

We need someone to provide us with a good guide, info's, tips, and foto's
 
Nice transmission build guide there, first off though I'd be weary of using a steel pry bar on the mating surfaces, a wooden wedge either side would be kinder and less likely to damage the surfaces.
 
fcuk that. its good to fix things yourself but theres a limit.
 
johnny_9 said:
make sure the mechanic is a gearbox & honda specialist.
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Yes, a SPECIALIST.

Even the shop manual, does show clearly the difference between the 1st and 2nd friction dampers and the correction orientation of the FD tabs into the 1/2 synchro hub; I 've done a few GBox rebuilds and only recently really noticed this!

A 1st Class re-built B-series transmission, should be rifle-bolt precise and shift with very little effort..you dont get that by only changing the synchros :welcome:

Have you tried to align the clutch, without a alignment tool? Do you know what happens to your pilot bearing, if the the clutch is not aligned?

Gearbox is a precision, specialist job.....if you want to do it right to OEM Specs.
 
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Not sure who that was aimed at............

I inspected my synchro hubs for wear and they were in very good condition, even the synchro rings were hardly worn but i replaced these for carbon lined synchrotech ones anyways

ALL bearings and seals replaced for OEM ones and the shifter assembly at the base of the shift forks replaced as well as the reverse selector also

Gearbox is silky smooth and changes with minimal effort, all gears feel crisp and tight as they should

Car sees 9k every time it's out and i built the box in my shed with basic tools and the honda manual, ensuring that i laid everything out methodically and reassembled everything in the correct order, ensuring everything was measured to spec

It's not rocket science, just takes patience and some confidence, does not NEED a SPECIALIST :)
 
Steve didnt even need a press, with shovel like hands he can pull gears off with his thumbs,,

truth be told if your mechanically minded patient and can take things apart and put things back together methodically then most things can be achieved,
I rebuilt the supercharger once on my Corrado G60 and inspected several since back when only a couple specialists in the country would touch G laders,,

that said though some people are not mechanically minded at all, and some average garages would not pay the attention to detail to do thing properly and take shortcuts,
so Honda gearbox rebuild is either a specialist or a talented DIY job,,,
not you're average Joe job and not your average mechanics job, most garages wont touch gearboxes they'll send them off to a gearbox man..
 
OK, specialist maybe overkill, but the guy needs to know what he is doing and pay attention to detail, if you want it down right and to spec.

if you got no experience, be prepared for alot of research (shop manual and EPC), invest in the tools and have put in the time.
 
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Plan is to just slowly build up some M-factory parts over the year and re-build the gearbox next winter now!

Fitted the S80 just as it was, The gap between 3 and 4 is a bit big, by which i mean massive!
At least now I'm 100% sure i want to do something about it.

Thanks for all the info everyone! Time to start saving again.
 
NeilVtec said:
Plan is to just slowly build up some M-factory parts over the year and re-build the gearbox next winter now!

Fitted the S80 just as it was, The gap between 3 and 4 is a bit big, by which i mean massive!
At least now I'm 100% sure i want to do something about it.

Thanks for all the info everyone! Time to start saving again.
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I noticed the same between 3-4 especially with a b16, a b18 seems to make the gap less noticeable if that makes sense.
 
yeah having the gap is more forgivable with the extra torque, but still something i plan to rectify in time :)
 
Good stuff!

Gearing is the way to go, unfortunately it's not cheap, however MUCH cheaper than hunting for power out the engine

To give you an idea i picked up my ATS gears for a bargain £400 (about 5k use, as new really) but then i spent another £600 on uprated synchros/full set of oem bearings/full set of oem seals/various other bits
 
Cheers steve, was expecting to spend around that much on some gears etc but may look out for some second hand aswell as thats cheaper than ive been looking at! will be saving through the year anyway collecting the bits and hopefully a new LSD to be able to build it over next winter,

Just going to enjoy the engine for now and get it corner weighted & geo sorted! :nice:
 
Interested in the 3 to 4th step on the gear ratios, now that I have a B16B mated to an S80 box, are there a common set of ratios that get used or am I going to have to get a dry tounge as I try and work out the right ones to use?
 
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