Hi all, trying to locate an (ideally new) dampened inner water pump pulley; 027121028 is the part number on it, single V belt pulley gold inner (stuck out to mount outer pulley) and black outer part. Rubber damping is completely shot, it works but makes a hell of a noise. Weirdly, online ETKA states 027121028 is KR/PL engine, 16v and 027121031 is PB with air conditioning (my car, UK 8v GTI with A/C), 027121031 isn't dampened, just solid metal. Seems an equivalent part is Meyle 100 121 0031 but I can't find either new anywhere online in the World. Surely can't be that rare and be the show stopper I've always worried about? Car is off the road until I can find a replacement. Only thought at the moment is to replace it with a non dampened 027121031.. Anyone knows of one or has one in their shed I'd be very grateful, at this stage second hand would do to get me back on the road. Thanks in advance, Chris.
Hi Chris, Did you get this sorted? Mine has the same problem. My car is a 16v gti Kr and I need part 027-121-028 as per your original post. I bought a second hand item Online which someone told me was fine. It’s been welded and Although doesn’t slip initially seems to stretch The belt within a hundred miles or so. I’ve heard from heritage parts that they have loads of people after one but they’ve had them on order for over a year from the supplier... I’m chatting to an engineering firm who might break down my old one and make a copy. Would you be interested? Alternatively if you’ve found a big box of them I’ll buy one off you please
might find it easier to bin it and convert to late spec/corrado setup. you need: 051105255 - late crank PAS pulley 027121031 - late waterpump pulley 051145255 - late pas pump pulley 050903137 - alt belt, 9.5x950 027903137 - late pas belt, 9.5x630 ends up like this:
Thanks Jonny! So that is a simple swap only those parts needed? The ancillaries themselves are exactly the same? I like this as there are no dampened pulleys and I’m going to guess the solid pulleys will be easier to find. I’m guessing that’s a way oversized belt there running to your power steering pump in the photo? Surely there isn’t that much adjustment? Thanks again
Be cautious with these rubber dampened pulleys. Once upon a time I had an 8v GTI (EV engine) ‘86. It had factory aircon and the crank pulley to compressor had a rubber vibration damper. I could see it was worn as it made a noise and also had a slight eccentric wobble to it. Anyway, one day on the M1 it failed. The ensuing imbalance sheared the bolt that attached all pulleys to crank, including the timing belt! Saw all the belts and pulleys flying in all directions in my mirror. That was the start of an awfully long AA recovery. But at least I made it back which is more than can be said for the car!
yeah the belt is probably way too long in the pic, I guess someone was asking why it wouldnt tension piccy was just to illustrate how the late setup looks, as you can see no slipper pulley just basic metal pulleys everywhere, pas pump and alternator/waterpump driven seperately from crank. corrado easiest place to find them I guess these days as they will mostly be late setup
Hi all, thanks for the input. That sounds like a bloody nightmare! I’m hoping that as mine is on an ancillary even if it did go spectacularly it won’t wipe out the cambelt..... here’s hoping. As per my first post I’ve been chatting to a firm who specialise In making those spare parts which you can’t get hold of. I disassembled my pulley and the Bush, made from a flimsy mesh was Only about 75% there, but the pulley components were good. Now they have taken this and the pulley outer and inner and have done a 3d scan to produce a model of the Bush, which they are now 3d printing in a high heat resistant synthetic. They say in heavy industry this tech is already in use it’s just not really been applied to the classic parts market. My hope is when I get it all back I can pop it back together..... this so far is cheaper then replacing all the parts suggested in the thread (which I’m eyeing as plan b) and not far off what the vw heritage part, which is like unobtainium anyway. Interesting applications for new tech - I’ll let you know how it goes!
Update on the saga. The Bush was made, it all was pretty tight getting it together, and then pretty stiff to turn once assembled. Thought it may loosen up so pulley fitted, but it seems like it might be too tight - It appears the belt is still getting stretched. Cue lots more searching and then onwards to looking at a plan B. I was chatting to the mechanic today who suggested something similar to what you have pictured here Jonny. He thought to I could delete the b*****d Idler and then replace the pulley that drives the water pump with 027-121-031 which would then drive the water pump and alternator off one belt from the crank pulley closest to the block, using the pulley that is already on there. He said this would be the same as the set up in a non PAS 16V Then the PAS could be sorted with the short belt you quoted earlier "027903137 - late pas belt, 9.5x630" as per your photo, but using the existing outer pulley on the crank and the one already on the PAS. Or so he thought? It seems to make sense to me - am I missing something? Cheers
I think you need at least a dished pas pulley, the crank pulley is also different so i guess its slightly deeper as well so the belts all clear? see how you go with it, I'm thinking the pas belt would fowl up on the waterpump using the original bits but see how you go. might be able to use spacers for both to get the belt out far enough. mk3 pas pump might save you having to space the pas pulley or source a late 16v pulley as the pulley is still flat on them but the pump mount pokes out more to clear the thicker mk3 ribbed belt... also some pas pumps have the inner hub and outer bolt flange as separate parts so you can move the pulley in and out slightly buy pressing on further or pulling outwards if that makes sense
My T4 van has a split V pulley for the power steering pump so you adjust the belt tension by either fitting or removing shims from between the pulley halves, is the one you are talking about similar ?
Hey Guys. Jonny (of course) you were right. I didn't get quite as far as tensioning the belts up but just messing about with the pulleys I had, the PAS belt would (JUST) foul the water pump pulley. Valvemeister thanks but it is a different set up to that. Tension on the belts comes from moving the alternator / PAS pump on a pivot for each respective system. The pulley is an Idler / dampened one, so when you hold the outside of the pulley you should be able to turn the centre. Looks like this - https://www.heritagepartscentre.com/uk/027121028-water-pump-pulley-16v.html. I did wonder briefly about using shims to space the PAS pulleys to give them the 2mm extra clearence they need but thought better of it. I'm back using the pulley I had 'rebushed'. It isn't perfect but the belts aren't needing adjustment every drive... I will continue with this set up until the part comes back into stock. The car goes in for its annual visit to the Phirm in a few months and I'll have a gas with them about it. Plan B being to get the deeper dished PAS/outer crank pulleys. Appreciate all the constructive chat - this is the first tricky part issue I've had to resolve in the 8 years of ownership! Cheers
How important it is to have dampened pulley? For example VW/Audi 1.8 doesnt have it, but 2.0 has it. (At least on Audi body)
HI,Sorry to hijack the post-See the PAS Crankshaft pulley- I am looking to replace mine it’s the same as the one in the picture but when I check the part number 051105255 it’s a different size-Do you know can they are all still available?Thanks
NLA from VW, but can usually source after shopping around on ebay and the breakers. corrado breakers in particular more likely to find them on corrado 16v than mk2
