I need to change the big end bearing but can't find anything online that shows you how to do it
Is it that hard a job that it's easier to buy a crank and conrod complete ?
Splitting a P200 crank
-
- registered user
- Posts: 57
- Joined: Sun Sep 04, 2011 5:50 pm
- Main scooter: Vespa Rally /P200
- Contact:
Take a look at Scooterhelp .com ....Might be of some use.
2Ronnies sc.......Chuckleism is the way forward
-
- registered user
- Posts: 1208
- Joined: Sat Mar 28, 2009 1:10 pm
- Location: hartlepool
- Contact:
to split a crank you need a hydraulic press, correct size drifts and correct size wedges to block the webs I can split them at work wouldnt attempt to rebuild them as you need a v block/dial gauge and experience
any good motorbike engineer can do it - i use a local shop he charges £15-20 (labour only) to split, rebuilt and balance
i wouldn`t change the bearing without changing the rod - when the bearing goes it usually takes the inner surface of the big end with it
a rod kit is around £35.00 + so still cheaper than a good crank - if it is piaggio webs and the threads and tapers are good i would rebuild if not buy new
any good motorbike engineer can do it - i use a local shop he charges £15-20 (labour only) to split, rebuilt and balance
i wouldn`t change the bearing without changing the rod - when the bearing goes it usually takes the inner surface of the big end with it
a rod kit is around £35.00 + so still cheaper than a good crank - if it is piaggio webs and the threads and tapers are good i would rebuild if not buy new
- mushroom
- registered user
- Posts: 40
- Joined: Wed Jan 07, 2009 11:43 am
- Main scooter: Motovespa P200E
- Location: Brighton
- Contact:
It was in a seized engine that's now been stripped.gaz_powell wrote:to split a crank you need a hydraulic press, correct size drifts and correct size wedges to block the webs I can split them at work wouldnt attempt to rebuild them as you need a v block/dial gauge and experience
any good motorbike engineer can do it - i use a local shop he charges £15-20 (labour only) to split, rebuilt and balance
i wouldn`t change the bearing without changing the rod - when the bearing goes it usually takes the inner surface of the big end with it
a rod kit is around £35.00 + so still cheaper than a good crank - if it is piaggio webs and the threads and tapers are good i would rebuild if not buy new
I tried moving the conrod round the crank but it felt stiff and notchy
It's moving easier now but I'm not sure I can rebuild it like that and trust it to be OK
For piece of mind I'll change the lot
thanks for all the advice