Omega Owners Forum
Chat Area => General Car Chat => Topic started by: Nick W on 29 December 2013, 20:16:41
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I've suspected for sometime that I've a faulty headgasket, together with a blowing exhaust manifold and at least one noisy lifter, so have been acquiring the bits to do the job. I'm still expecting the headbolts and 3.2 manifolds, but thought I'd make a start today.
As usual with this sort of job, I reckon I could probably knock a quarter of the time taken if I had to do it again, but the heads are now in the boot of the car, ready for cleaning up tomorrow. Some if it is annoyingly fiddly, like the coolant pipe. Surprisingly, all of the exhaust manifold studs and nuts undid easily.
It turns out that the driver's side headgasket was barely holding at the back, and both exhaust manifolds were blowing. I still need to sort out the lifter, but I've had enough for one day, especially as I'm suffering from a chest infection at the moment. It's now time for a hot bath and a stiff drink.
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Worth a pic or two? :)
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I'm a lousy photographer, and the pics I took don't really show much.
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Been feeling really lousy the last few days, so have been taking it easy.
However, I have managed to strip the heads, clean them, polish the valves(bunged them in the lathe, and cleaned them up with some old no-longer sticky DA discs), lap the seats, replace the stem seals and reassemble everything.
I've also serviced the cam lifters, and hopefully identified the noisy one. That was very stiff to compress, had no oil in it, and barely returns. Fortunately, the place I got the £12.80 head set from also had new lifters at £4 each, so I bought the last 4 they had.
With all that done, I raided my stash of useful bits to replace the manifold studs. And that's where things went tits-up, as the damn things are imperial. So, I got in the Focus and went to buy some new ones. 4 motorfactors later, 3 of which claimed to have never been asked for them before and one which insisted the 10 imperial ones he found 'would work perfectly', I ended up at the local Vauxhall dealer. Who can get them, but not before Monday ??? Which meant a trip to Versatile Fasteners in Gravesend, who had them in stock, offered new copper stiff-nuts without my having to ask for them, and supplied new downpipe nuts. As I was paying cash, and didn't need a receipt, that lot cost me £5.
I'm still waiting on the 3.2 exhaust manifolds and gaskets, which is holding up reassembly.
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Great result on the studs/nuts Nick...when I replaced o/s manifold gasket last year I got new studs/copper nuts from VX in Dartford and seem to remember them being alot more than £5=00..figure of £25-£30 seems to register for the 7 studs/nuts but being VX you must by a bag of 10. >:(
Larger copper helicoil nuts for downpipes were around £2=00 each >:( so you got a bargain,so fairplay and just result for your perserverance :y.
Glad to hear you have identified the noisy lifter so expect it all to be up and running shortly and sounding and going like new.
Hope you feel better soon ;)
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If you know which the noisey lifter is then its worth stripping it down to its component parts, cleaning it and re-assembling.
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If you know which the noisey lifter is then its worth stripping it down to its component parts, cleaning it and re-assembling.
I'll probably do that out of curiosity, but will replace it as I already have 4 new ones. How do they come apart?
As for the studs, I didn't expect them to be an issue. I always replace them, and have never had a problem buying them before. They're certainly not something I'd normally consider buying from a dealer; Andrew's quoted prices are the reason. Versatile have always had what I've needed, small(or industrial - their normal market) quantities are never a problem, and cash always gets a good price. They are a traditional small firm, no computerised 'expert' stock control, just a bloke behind a counter who IS an expert.
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If you know which the noisey lifter is then its worth stripping it down to its component parts, cleaning it and re-assembling.
I'll probably do that out of curiosity, but will replace it as I already have 4 new ones. How do they come apart?
Place the follower on a block of wood and put some more on its top surface. Hit the wood hard and the centre plunger will slowly pop out. its this centre plunger which is the actual adjusting part of the follower.
From there you can strip the internal bits of the plunger easily apart including the ball bearing and its retaining spring for cleaning. Its this ball bearing and associated seat where you find the oil varnish build up which causes them to drain down (the bearing acting as the one way valve).
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Good luck with it Nick. my fanny-mould nuts andstuds also came out with no drama at all :y
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I bought manifold studs and new copper nuts to ensure I had all parts needed when I did the o/s manifold gasket as was wary about studs breaking and would not want to be using the old nuts.
In truth all the old studs were fine and nothing broke but for the sake of thorughness I replace each of the 7 existing studs with new along with copper nuts.
Downpipe nuts were badly chewed up when removed so for the sake of the extra few £,s I was glad I had new to hand.
You live,n,learn and I would on happily paid less for the parts ,but just glad I had all new to hand when I did the job
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The exhaust manifolds have finally arrived, after I received the gaskets this morning.
Hopefully the weather will hold off tomorrow, so I can trim the downpipes and start reassembling everything. I'd like to have it back together for the club Christmas/my sister's birthday dinner tomorrow night, but the 5 of us are more likely to be squeezing into the Focus.
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The exhaust manifolds have finally arrived, after I received the gaskets this morning.
Hopefully the weather will hold off tomorrow, so I can trim the downpipes and start reassembling everything. I'd like to have it back together for the club Christmas/my sister's birthday dinner tomorrow night, but the 5 of us are more likely to be squeezing into the Focus.
Pm'd :-[
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If fitting 3.0L downpipes, use two gaskets,and a nice smear of paste,betwik each.
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In between dodging heavy rain and my nasty cough, I've got the heads back on, cams fitted and most of the fiddly stuff at the back of the engine connected.
I might get it running tomorrow, which would be good!
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Your a brave man working in this weather mate. :y
I have been threatening to replace the thermostat on the 3.2 since before Christmas. ;D
The first day I had free and ear marked to do it after Christmas is was wetter than a wet thing :o and next free day is next Monday but looking at the weather forecast its monsoon season still,so as I would sooner be cold than wet it can wait. >:(
Well done to you though :y
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In between dodging heavy rain and my nasty cough, I've got the heads back on, cams fitted and most of the fiddly stuff at the back of the engine connected.
I might get it running tomorrow, which would be good!
Good stuff :y today was perfect weather for sitting on the drive doing suspension work :D
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I once did a gearbox swap in the snow.
Once, and only once.
As for working in the rain; you get used to it.
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To a point... ;D
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It's now almost done. Plenum is fitted, cam covers/belt/belt cover refitted, SAI disconnected/removed, exhausts cut down(although not refitted), and most of the wiring reconnected.
Lack of light and a family dinner stopped play.
I have just turned a bung for the base of the EGR valve, as that was easier than making a blanking plate. It replaces the tube from the manifold, and is held in place by the original nut cut off the tube.
About the only tricky bit is to remember where all the vacuum hoses attach.
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Sounds like you had a busy day and the weather held off for you.
I had hoped to get on with the thermostat replacement,but "work" got in the way and wasted my morning messing about with a complicated computer design which then required an afternoon visit to Lower Stoke so nothing mechanical got done here,although potentially earnt a few quid but wont see that until mid/late March assuming all goes to plan and the chippy doesnt cock up
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Finished it this morning, after losing the will to live yesterday refitting the front pipes on my own, in the rain.
It all looks good, nice smooth idle, no exhaust blow and no tappet noise. There was a leak from the breather box on the plenum, but seating it properly sorted that. A few decent runs are needed to prove the cooling system.
Leaving it running for about 20mins has identified the oil leak. Clean oil directly under the pressure sender and nowhere else means I need to swap it with the one on my other engine.
A new pair of bonnet rams is also needed, I've done most of this work with a stick holding the (bloody heavy!) bonnet open.
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Sounds like you have been working hard,and not in the best of weather conditions,but glad to hear its nearly all sorted now.
Have a pair of pretty good bonnet rams here if you want them. ..anytime your passing and you see 2 ;D Omegas I am at home just call in and pick them up :y
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I've now had a chance to use it, and that threw up an unexpected problem; the smooth idle was mostly wishful thinking, and low end power was lacking. So I had a bit of a think, and it seems some idiot managed to connect the #4 and #6 plug leads the wrong way round. Correcting that did return it to normal. The new manifolds seem to have a added a bit of extra punch from around 3500 rpm, so they were £45 well spent. Especially considering that I bought them with the savings from the gasket set.
There's no steam from the exhaust, and the manifolds not blowing makes for a much more pleasant drive. Losing the SAI has tidied up the underbonnet view, although it would be nice to remove the EGR valve, rather than just bung it up.
So, I'm going to call it a success. I'm a little disappointed in just how long it took to do; the same job on an OHV V6 is about 4 hours work in total!
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Job jobbed, now get indoors and dry out :y
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Nice work pal :y
And it reminds me I need I suss out my oil leak :-[
Pressure sender would be a handy fix I imagine out of the options ::)
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Certainly better than the crank oil seal, which I had bought, and was resigned to doing whilst the cam belt was off. However, I didn't bother, as it was dry behind the pulley. The other possibility was the dipstick tube, which has been proved to be, er, time consuming!
The oil pressure switch is a common fault on the smaller engined Corsas, although they also cause a flickering warning light.
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Nice one Nick... great work!
If the oil pressure switch isn't sealing could you put some thread tape on the threads to seal it?
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Nice one Nick... great work!
If the oil pressure switch isn't sealing could you put some thread tape on the threads to seal it?
If that is the problem, then yes. But it's never been removed, so it's unlikely.
They normally fail internally, and leak from the end. Which means a replacement, and installing the old one in the bin.
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Nice one Nick... great work!
If the oil pressure switch isn't sealing could you put some thread tape on the threads to seal it?
If that is the problem, then yes. But it's never been removed, so it's unlikely.
They normally fail internally, and leak from the end. Which means a replacement, and installing the old one in the bin.
;D
:y :y :y