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Oh, that's a nuisance.

924nutter

924nutter

PCGB Member
How's this for bad luck. Just got YLB 82 X (S2 turbo) mot'd and taxed. Got a gallon of oil and a cam-belt at home, ready for a 6000 mile service. As you all know it's been in the garage for 18 months, so I thought I would change the cam belt to be on the safeside. On the way back from the mot centre the belt went. I am now the proud owner of a 924 turbo with some bent valves. Oh that IS a nuisance. In fact they were almost my exact words when the belt went.
 
Oh blimey [:mad:]

Anyway good to know that you self moderate your language in real life as well as on the forum [;)]
If it had happened to anyone else I'd be worried, but I'm sure you will have it up and running in no time [:)]
Keep us informed as to how the work goes
 
Your confidence in me has encouraged me to tackle the job, instead of farming it out. I am going to have a day of rest tomorrow and enjoy the sun, until I get bored then I'll probably make a start in the evening. By Wednesday we'll whip the head off and have a butchers.
 
That is tough [:mad:] . As Paul says, I don't doubt you'll have it sorted in no time. Not much consolation for you, though.

Phil
 
I have the cam cover off and the fuel injection lines and air cleaner out of the way. Incidentally one of the turbo flange bolts is already missing but experience from the ebay special tells me that they can vibrate out. It is apparent from the 10mm valve clearance that no1 and 3 inlet valves are bent. The engine still turns over so I am not expecting any secondary damage and hope to be back in business by the end of the weeek depending on availabilty of valves. In the depths of despair I phoned Ray Northway, a Porsche trained technician, of Northway Porsche, and he reckoned that I would be looking at 1600 to 2000 to repair it again subject to how many spares were needed. In a moment of madness I actually booked the car in to have the work done, but having slept on it and got over the initial shock, I am having second thoughts. Northway are so busy they can't even take the car in until the 22nd July.
 
Tough luck.......and the best of British getting the three turbo bolts off. I just take the oil cooler pipes off to get access to the bottom bolt if that helps in some small way.
 
You might find an article I wrote for the Post, Sept 2004 I think, interesting and informative. The position of the steering rack has to be marked too, because three bolts need to be removed to allow the lower steering joint to be disconnected so that the banjo bolts can be withdrawn from the thermostat housing. I fought tooth and nail yesterday to undo the top oil cooler union. The bottom hose is clear but I have had to settlle for flexing the top hose to withdraw it. All that remains to be undone are the two wastegate flange bolts, and the head bolts themselves.
 
I haven't read your article, but have done a few head gaskets circuit side [:(] .......I don't disconnect the steering rack or remove the steering joint, you "can" remove both connections to the filter housing with a 24mm spanner. At least that's what I did at Rockingham - you may also be able to get access to the second one with a 24mm socket. At least I don't have any issues with rusty bolts.[:)]

Good luck with the rest of the rebuild

ps. I don't remove the thermostat mounting either
 
Lucky you. I have tried twice and the banjos do not come past the steering flexy. It may be possible to remove the clamp bolts top and bottom and slide the coupling back so that it comes off the bottom and out of the way, but I don't see undoing the steering rack as a big deal. Mark it well with correcting fluid, and its just three bolts. Thinking about it, my rh engine mount may be shot allowing the engine to drop much closer to the steering knuckle. Also I'm doing this with the car at ground level and not up on a hoist. It's all academic now as the head is off revealing three bent valves 2 In and 1 ex, and some witness marks on the piston crowns which will dress out. The guides have not copped it, I only had about 2000 revs on in 4th, and hit the clutch as soon as I heard a flapping sound. The part have been ordered, some from Porscheshop and some from Reading OPC depending on whose retail price was the best. I am not going to muck about, all 8 valves are being replaced. Inlets about £30 ea, Ex about £43 ea, with collets and vat. FYI the sleeves for the turbo flange bolts are no longer available. I will be dismantling the head tomorrow.
 
The head is apart, no cracked guides and the endplay is good. I have some stem seals from previous gasket sets, and the little thingy's that go over the stem to stop the collet groove taking a lump out of the seal, so I will be changing them too. I know it's more expense than needed but I'm changing all 8 valves, and of course the collets. Four of the remaing valves look good but every piston has a valve shaped mark in the layer of carbon deposit on the crown, so even if they haven't bent they have been flexed in a way they were not designed for. The new bits should start to arrive tomorrow, but those of you who have been paying attention will remember that I was due for a hernia operation, and indeed, I went under the knife on Monday at 7pm and I am therefore still a bit sore and in no fit state to lug a cylinder head around just yet.
 
Sunday, still no bits. I am going to start tarting up the black tin work if they dont come tomorrow. I have already cleaned and resprayed the metal cross-pipe from the top of the rad to the thermostat housing. I have also ordered a complete set of replacement hose clips so it should end up looking "used" but tidy. Fingers crossed. Oh, nearly forgot. I got the wastegate nuts off without shearing any studs this time, by using a nut splitter. It was a tight fit, I had to modify the shape of the ring to get right in, and it was b awkward (no that is not a musical key) to use, it probably took the best part of 10 mins per nut. Luckily, in my "armoury", I have an M8 die-nut to clean out the threads, and new locking nuts are on order. All systems on stand-by.
 
Tuesday still not got all the bits. Still waiting for the collets from Porscheshop. I have been busy though. The tinwork, ie cam belt cover, both halves of the air cleaner housing and the water pump pulley have been repainted. The cover and the aircleaner were taken back to bare metal and primed and glossed. During the sanding not once did I encounter any feathering of the black topcoat into grey, yellow or any other kind of primer, so I am thinking that maybe the originals were never primered. Anyway they look brand new now.
Call it luck but about three months ago, maybe longer, I bought a set of genuine Porsche cam followers from Ebay for £85. Not bad when you consider that during my first ever rebuild 12 years ago I paid £38 each from AFN in Guildford as was, and the quote for the Audi sourced equivalent part was £52 ea ( both plus V.A.T.). Cutting a long story short, closer examination of the followers has revealed a deep indentation in the three followers associated with the bent valves. Ah well, the more I practice the luckier I get. Oh and I have had the clips out now and I am much more comfortable ta!
 
Sorry to hear about your bad luck [:(] - Best of luck with the rebuild - incidentally, what is the belt change interval on a 924/944 ?
 
48,000 I think, and mine was done at 48, by Northway. The engine has only covered 64,000 now. The good news is that six of the eight valves are back in the head, with the last two to do tomorrow, then it will be time to set up the cam and start re-assembling the engine.
 
Good luck with the rebuild John, the things are sent just so we can keep in practice ;-)

Was this the pristine low mileage Turbo or the favourite one?
 
Unfortunately this is the hardly pristine but very tidy, i.e. no split seats, no dash cracks, unsplit headlining, very tidy wheels, non oil burning 64,000 miler, bu****it. The head is fully built up with the tappets adjusted, I just need to change the cam shaft seal and the head can go back on. It is so clean I have to wash my hands before working on it, and when I have finished my hands are still clean, just the way it should be. Might be able to run it up by Friday, to leave just enough time for a quick fettle and touch in to get it ready for the festival. the following weekend.
 
Cam wheel bolt was a bitch. It took over 150lb/ft to undo the 23 year old bond, and I had to mak a very long anti torque bar to hold the wheel still, but we got there. I decided not to rush, so, have instead, booked Mon, Tues next week to put it back together and catch up with the fettling. Keep'em crossed guys.
 
Cam wheel bolt was a bitch. It took over 150lb/ft to undo the 23 year old bond, and I had to mak a very long anti torque bar to hold the wheel still, but we got there. I decided not to rush, so, have instead, booked Mon, Tues next week to put it back together and catch up with the fettling. Keep'em crossed guys.
Click to expand...

This is not recommended rehabilitation for someone who's just had a hernia fixed - and you certainly shouldn't be messing about with a 23 year old blond at your age!!! [;)]
 
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