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Post by ukmole on Nov 14, 2013 20:05:34 GMT 1
Note well gentle reader: The bell housings are NOT common. Each box will need its own bell housing. 'How do you know that?' I hear you cry. Because I have paid two shops plus a complete waster in UK to change boxes FOUR times trying to achieve a 5 speed in my Camper. Each time the 5 speed was in, it leaked oil. And each time I assumed it was faulty workmanship. But no. The original UK waster had seen that the 5th gear selector rod intrudes into the bell housing and in the 4 speed housing there is no room for it to move. So he drilled a hole in the housing to let it move. See the pic. The round casting bubble at 12 o'clock is for the 5th gear shaft to move. It does not appear in the 4 speed housing. So always use the correct bell housing which is proper to the gearbox. Attachments:
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Post by FredTransit on Nov 14, 2013 21:18:35 GMT 1
Im confused. I know theres a 4 speed petrol bell housing and 4 speed diesel bell housing. Theres the same for the type9 5 speed. The petrol 4 speed and petrol type9 5 speed both bolt to the pinto. What are you swapping to what?
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Post by bobdragon12 on Nov 14, 2013 21:26:03 GMT 1
Me to , I'm sure the bell housings from the 4 speed "rocket" and the type 9's are the same
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Post by ukmole on Nov 14, 2013 22:35:02 GMT 1
Me to , I'm sure the bell housings from the 4 speed "rocket" and the type 9's are the same Nope. You'd think that but I'm here to tell you that it ain't so. That bobble in the type 9 housing allows the 5th gear shaft to move. *My* 4 speed bell housing had a hole drilled to allow for this movement when I changed gearboxes with the same bell housing for both. Whether the profile changed at some time to make them both the same, I don't know. See pic of my 4 speed housing. Note the hole at 12 o'clock. Attachments:
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Post by dodgerover on Nov 14, 2013 23:26:34 GMT 1
Can't you TIG weld the hole up - building it up into a big ball and then bore it from the other side to give clearance but maintain oil tightness? Would be cheaper than sourcing another bellhousing.... Can't spot the hole in the photo so not sure if this is viable? If you put a big blob of plasticine on the hole then drop it back together it will show up any clearance issues
Alternatively is it possible to machine the housing to take an oil seal on the shaft?
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Post by ukmole on Nov 15, 2013 1:12:27 GMT 1
Can't you TIG weld the hole up - building it up into a big ball and then bore it from the other side to give clearance but maintain oil tightness? Would be cheaper than sourcing another bellhousing.... Can't spot the hole in the photo so not sure if this is viable? If you put a big blob of plasticine on the hole then drop it back together it will show up any clearance issues Alternatively is it possible to machine the housing to take an oil seal on the shaft? The last guy to work on it is a transmission specialist. He made a dome (out of a gas-pipe blanking cap!) and a threaded neck to fit. It's now oil-sealed and good to go. I am out around $2000.00 for the experience, which is why I posted this warning.
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Post by bobdragon12 on Nov 15, 2013 8:37:20 GMT 1
For that sort of money you could have bought a MT75 and all the bits and imported them and still had change . Ouch
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Post by FredTransit on Nov 15, 2013 10:43:41 GMT 1
still confused. Did you swap bellhousings from different gearboxes? Or are you saying theres different bellhousings for the same petrol box?
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Post by bobdragon12 on Nov 15, 2013 11:13:28 GMT 1
I think what he is saying he only had a 4 speed bell housing and they had to bodge this to fit the box although they are 2 separate entities so not sure how there ended up with a hole in both box and bell housing
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Post by ukmole on Nov 15, 2013 17:41:59 GMT 1
I think what he is saying he only had a 4 speed bell housing and they had to bodge this to fit the box although they are 2 separate entities so not sure how there ended up with a hole in both box and bell housing Originally had a 4 speed box. Bought a Type 9 with no bell housing. Waster in UK fitted the bell housing to the Type 9 and then found that the 5th gear layshaft(?) would not work as there was no space for it to move forward to work. Waster drilled out a hole in bell housing to allow for movement of layshaft. Hole leaked oil like a bastard. I thought it was faulty workmanship in reconditioning by expert in UK (not the Waster) and had it reconditioned again in USA. It still leaked. USA experts saw the hole and fixed it. No leak.
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Post by FredTransit on Nov 15, 2013 20:13:10 GMT 1
WTF? Was this a car gearbox? Cos both pinto cars and Mk3 transits had the type9 and they didnt need any holes to be put in them.
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