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914World.com _ 914World Garage _ 901 dissasembly

Posted by: Aaron Cox Jul 9 2005, 03:30 PM

taking apart old 901 four speed. i need the S gear out of it and the HB gear. i have the whole thing apart.... got the nut off the main shaft, but cant get the bearing to budge.

how do the gears come off? how do the sghafts come off the input shaft?????

AA

Posted by: TimT Jul 9 2005, 03:31 PM

a press grasshopper

Posted by: Aaron Cox Jul 9 2005, 03:37 PM

QUOTE (TimT @ Jul 9 2005, 02:31 PM)
a press grasshopper

F#CK....

i saw dr evil did it without a press..... how the fuck...

Posted by: TimT Jul 9 2005, 03:44 PM

Or support the gear stack vertically, between the jaws of a vise on a sturdy workbench.

Take a block of wood to protect the end of the shaft and beat away with a BFH

You should be able to drive the shaft out of the gear stack.

I then go over the input/output shaft with some crocus/emory cloth and reduce the amount of interfernce between the gears sliders spacers etc.. so you dont need a press or BF next time around...

The guy whose name escapes me now.. he rebuilds the trannys for PMNA showed me this trick

Posted by: TimT Jul 9 2005, 03:45 PM

Even that mod to make the gears slide more easily on and off needs a lil more splainin

you really should chuck the inpu/output shaft in a lathe to do this

Posted by: Aaron Cox Jul 9 2005, 03:45 PM

this is an early aluminum 4 spd....

i cant even get the shafts out the input shaft yet....

BTW - what are EARLY 4 bolt 2 Pin output shafts worth?

Posted by: Aaron Cox Jul 9 2005, 03:47 PM

dont care about the A-gear mainshaft. just want the gears off of it....

and the layshaft gears too....

anyone need an AL case?

Posted by: Red-Beard Jul 9 2005, 04:10 PM

Did you even read my article?

BFH. Use a brass one and be gentle, but forceful.

Posted by: Bleyseng Jul 9 2005, 04:13 PM

Go buy a $20 BRASS BFH and beat the shafts out of the bearings. Once out the gears slide off.

Remember, brass is soft, steel is way harder!

Posted by: jr91472 Jul 9 2005, 04:17 PM

I used one of those gear puller/bracket things like a press. Worked like a charm by pushing the shaft out of the intermediate plate.

I can take a picture if you want

Posted by: Aaron Cox Jul 9 2005, 04:55 PM

used a BFH and a brass rod.

out like a charm. now have HB S Z gear sets bundled together....

sliders/dogteeth/synchros look pretty good.

now to have someone assemble my other 914 box... A F ZD Flipped S ZD

BTW - what are the output shafts worth out of this box -4 bolt 2 pin, a little bigger than stock 914 stuffs

Posted by: Bleyseng Jul 9 2005, 06:00 PM

put it together yourself Aaron. you can do it, you are a adult now.

Posted by: bondo Jul 9 2005, 06:11 PM

No idea what those output flanges are worth. If they are like the 912 trannies I took apart, they're different and wouldn't fit a 914 trans.

Posted by: ClayPerrine Jul 9 2005, 07:56 PM

QUOTE (Aaron Cox @ Jul 9 2005, 04:55 PM)
used a BFH and a brass rod.

out like a charm. now have HB S Z gear sets bundled together....

sliders/dogteeth/synchros look pretty good.

now to have someone assemble my other 914 box... A F ZD Flipped S ZD

BTW - what are the output shafts worth out of this box -4 bolt 2 pin, a little bigger than stock 914 stuffs

Use the HB flipped for 5th. It gives more overdrive.....

What you end up with is a close ratio 4 speed with a long legged 5th for highway use.

Posted by: Aaron Cox Jul 9 2005, 09:24 PM

too tall i believe. more suited for a v8. not enough torque from a four banger....

and the gap from an S 4th to a flipped HB 5th would be huge! imagine that downshift... waaaoooo weeeeeeeeeeee

Posted by: ! Jul 9 2005, 09:32 PM

Amazing what happens when ya RFTFB....gud boy....

Posted by: ClayPerrine Jul 9 2005, 09:38 PM

QUOTE (Aaron Cox @ Jul 9 2005, 09:24 PM)
too tall i believe. more suited for a v8. not enough torque from a four banger....

and the gap from an S 4th to a flipped HB 5th would be huge! imagine that downshift... waaaoooo weeeeeeeeeeee

Actually, that's the exact gear set I have for my /6 conversion....

Recommended by 2 long time Porsche people, each not knowing of the other's recommendation.

As soon as my car is on the road I will let you know how it works!

Posted by: Aaron Cox Jul 9 2005, 10:32 PM

QUOTE (Manfred Z @ Jul 9 2005, 08:32 PM)
Amazing what happens when ya RFTFB....gud boy....

rftfb?

Posted by: Dr Evil Jul 9 2005, 10:43 PM

Did ya get them off? I tried to call you, but you didn't answer your phone.

Posted by: Aaron Cox Jul 9 2005, 11:36 PM

QUOTE (Dr Evil @ Jul 9 2005, 09:43 PM)
Did ya get them off? I tried to call you, but you didn't answer your phone.

got em all off, thanks for the guidance on the phone mike

AA

Posted by: 9146986 Jul 10 2005, 09:17 AM

QUOTE (ClayPerrine @ Jul 9 2005, 07:38 PM)
Actually, that's the exact gear set I have for my /6 conversion....

C'mon Clay that's not fair! You're building a six with MFI and 906 cams, for cryin' out loud!