jevvy964

Looking good rob, much less of a disaster than most people find.

1 question - is that an old style fork? New forks have plastic bushes in them to grip on the shaft:



Also I assume you are using a new release bearing? If so I'd be tempted to sling a new fork in so they have fresh wear surfaces where they meet. I didnt the first time I did mine and the odd wear on the end of the fork ended up breaking an ear off the release bearing:

robt964

>is that an old style fork? New forks have plastic bushes in them to grip on the shaft

That's what I thought. I guess it was a new 'old stock'? Yep I'll be fitting a new CRB but reluctant at this point to swap out the fork if it is perfectly fine. The contact points on the fork tips don't have any uneven wear. I'll marry it up to the new bearing before final assemble, see how it looks and make a decision off that.

jevvy964

Perhaps but I still think its the wrong fork for that shaft. Here is what that fork should look like:



ie the roller bearing cages are in the fork instead of each end of the shaft.

Also the little flange on the plastic bushes help keep the fork in the centre of the shaft:


Its obviously been working ok so not the end of the world if you re-use it but make sure you dont grease the shaft to fork join otherwise it might start pivoting there instead of on the bearings which will wear the alloy bushes in the fork out and create an oval hole(if it hasn't already.)

robt964

Ok, so that I can understand how the old setup used to look... let me play that back. The shaft I have is of the new design, but the fork is of the old design and fits this shaft purely by chance?
So if correctly employed, my old fork should should have roller bearings pressed into its soft metal bushings? (why would there be soft metal bushings if this is not a direct bearing surface? ) That would mean that the correct shaft to use with this fork has a much smaller OD and probably no bearings on the end of the shaft?

dave964diver

My one has tge plastic bushes in the fork not the roller bearings. The bearings are set into the transmission housing. Ie pushed in one has a hole the other not. No problems with mine.

robt964

Looking at this diagram here:



The top fork mech is from the older G50 boxes. The part number on my existing fork 950.116.712... matches up with that. Also from the diagram, it does indeed look like the earlier forks used a narrower spindle.

Thanks for your help chaps I now understand the issue and will order the later fork 950.116.086.06 (now 997.116.086.90) that I'm also lead to believe will come with the required 2x bushes 950.116.715.01.


<edit> New fork is 167 quid plus VAT !!! </edit>

jevvy964

Sorry mate I missed yr first reply - sounds like you have it nailed though

I wonder if you could push the alloy bush out the old fork and just order 2 new plastic bushes? I have a vague memory of having to do that one time but dont quote me

dave964diver

Might be cheaper to have some bronze ones fabbed up rob.

paredown

Best rebuild thread ever. You have mad skills!

spenny_b

I've ordered from these guys before, for oil-lites on my new eGas throttle linkage assembly....they do oil-lite stock as well, for those custom jobs

http://www.bearingboys.co.uk/Oilite_...Bushes_-1011-c

robt964

Thanks for the links and kind words chaps

Now I'm on the scrounge. I called design911 earlier to ask where my parts were. Well, bad news. The RS guide tube is apparently on back order in Germany and has been for a while. OEM ones also cannot be found

Do any of you UK chaps have one (95011681330) kicking about in your parts stash that you'd be willing to sell on?

cptnzero - you have PM.

jevvy964

Try type911 or your local OPC. I buy most of my stuff direct from porsche now as the price isnt that much worse(ask for at least 10% off) and you know you get the pukka stuff.

I might be able to find my old fork so you/me can have a go at pressing the bushes out - if you get a win then its only 2 x £3 bushes to get you back on track.

(edit in my experience D911 sell the most non genuine PITA parts and they dont give a stuff if you complain, YMMV)

robt964

I've bought most stuff from my OPC but getting to them to collect bits can be tricky as I can only get there Sat mornings. Thought I'd give D911 a shot on this one since they deliver.
I'll try my OPC then, but D911 did say it was on back order (porsche) so would they not have the same issue?

Jcx

Rob i buy my parts from my indy (Dove House in Northants so not close to you) as they are always cheaper than Design911 and they source their parts from Porsche UK or i buy from Porsche directly when i just need a small item and i don't want to inconvenience my indy with the whole order process.

But getting to the point, Porsche Hatfield has always posted parts to me FOC AND given me a 5-10% discount. Design 911 prices shoot up when you start paying VAT and carriage which they only add on at the checkout. Design 911 has NEVER beaten my indy or Porsche UK on price for genuine parts, delivered quickly to my door.

Rephlex

Agreed. I buy from OPC Hatfield (parts guy Richard is great, takes an interest no matter how small or obscure the request) and conveniently its just down the road.

My only experience with Design911 was negative. I bought and paid for a number of items that were shown as being in stock. I had ordered from them specifically because other sources were out of stock. After a while they contacted to say they were out of stock on back-order but would be happy to hold onto my money and wait. I took a refund. I can see the necessity of using them is you live in the colonies, but not when you have legitimate choice locally.