Page 1 of 1
crankshaft pulley hole size
Posted: Sat Apr 14, 2018 6:21 pm
by FaanP
Hi,
Can anybody please tell me what is the size of the hole where the threaded part of you crank pulley goes in? Mine is 50,5mm and my threads on the pulley is 50mm. Is this my hole size correct or to big?
It is a 1600 TP
Re: crankshaft pulley hole size
Posted: Sat Apr 14, 2018 8:24 pm
by fourier
Did a quick check on my engine casing. It measures 50.03mm.
At 50.5mm, you will probably end up with a bad oil leak.
Re: crankshaft pulley hole size
Posted: Sun Apr 15, 2018 6:11 am
by FaanP
fourier wrote: ↑Sat Apr 14, 2018 8:24 pm
Did a quick check on my engine casing. It measures 50.03mm.
At 50.5mm, you will probably end up with a bad oil leak.
Thank you Sir ... and that is exactly the problem. The question now is how do fix it? I can't seems to find 50.5 mm Crank pulley
Re: crankshaft pulley hole size
Posted: Sun Apr 15, 2018 7:54 am
by Tony Z
VW did make a bigger pulley for the 0.5mm bigger hole.... you just have to dig through old spares until you find one
Re: crankshaft pulley hole size
Posted: Sun Apr 15, 2018 8:47 am
by FaanP
Tony Z wrote: ↑Sun Apr 15, 2018 7:54 am
VW did make a bigger pulley for the 0.5mm bigger hole.... you just have to dig through old spares until you find one
I have a old aluminium pulley. Will it possible to get it welded up and machined to the correct size?
Re: crankshaft pulley hole size
Posted: Sun Apr 15, 2018 8:49 am
by Tony Z
anything is possible with the right amount of money
I'd rather suggest a sandseal pulley approach - this has a seal which you insert into the case and the pulley has a stainless ring on it to prevent wearing on the seal
Re: crankshaft pulley hole size
Posted: Sun Apr 15, 2018 8:50 am
by Tony Z
and then, who is going to cut the thread correctly????
Re: crankshaft pulley hole size
Posted: Sun Apr 15, 2018 8:43 pm
by fourier
Tony is correct, VW made oversized pulleys (111 105 253B) to solve this problem, but good luck finding one...
Easiest fix, is probability the sand seal route. You may need a custom OD seal holder to fit into the case ID, and a sleeved pulley as Tony suggested. This will be much cheaper than having a custom pulley made, to fit your case.
Re: crankshaft pulley hole size
Posted: Mon Apr 16, 2018 8:04 am
by slak
Best is to get in touch with Bennie(VW Oldies) in Vereeniging and ask him if he might have one for U he has alot of parts
looking for new homes 084 872 eight 7 four 5
Re: crankshaft pulley hole size
Posted: Mon Apr 16, 2018 3:37 pm
by FaanP
Thank you all for the help. I found 0.5mm oversize pulley with the help of the friendly guys at volksieworld. Hope that it will mean the end of my oil leak.
Re: crankshaft pulley hole size
Posted: Mon Apr 16, 2018 4:29 pm
by fourier
Glad you found the correct pulley! Let us know if it solved your problem.