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  1. #1
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    Default Losing compression cylinder 4

    Had the car for around 2 years now, 2011 corsa D VXR running standard with 3 piece Remus. The car has done 47,000 and all of a sudden, mainly noticed since fitting the Remus, it started running rough on idle. Took it to a local Vauxhall specialist who did a compression test and confirmed it was low on cylinder 4 which he thought was valves, he took the head off, reskimmed it cleaned the valves, put a new head gasket but it's still losing on cylinder 4. The guy reckons the pistons looked alright so I'm guessing it'll be a piston ring. Compression across the cylinders is 125-130 across the first 3 then 85/90 on cylinder 4. On top of this I've got a slight gearbox whine when driving and when cornering right. Been quoted 3k for 4 new standard pistons, new clutch (necessary?) and gearbox recon
    Does this sound about right and is it really necessary for an new clutch after 47k miles?
    Also are most people going for forged pistons and new rods when they usually do it as the quote I've got is for standard pistons on the same rods

    Any advice appreciated!

    Cheers

  2. #2
    VXRed Antonyjamr's Avatar
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    11th March 2017
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    Sorry to hear that Jon!

    I'd definitely be ringing up for quotes from other Vauxhall tuners. However 3k doesn't sound bad for all that. The standard pistons bit.. maybe someone with more knowledge would be better to inform you. To my understanding although its a 'common' fault on Z16LETs it can be avoided and engines can run strong as long as they're well maintained and looked after/not abused and warmed up. Forged pistons serve different purposes and are probably pros and cons to both. If it was me I'd lean towards forged but before hearing what people on here have to say. As for the gearbox I've got the same problem as you, mines only just started and is really faint, how loud is the whine on yours? I can't hear mine unless everything is off and windows are shut. It comes down to how much money you have to spend on this getting it fixed. It would be a good time to get the clutch done as the car will already be apart and would be cheaper then to have it done in the future on its own, though I wouldn't be having it done at 47k still a lot of life left I'd think and its just a bigger bill. But like I said it depends on how much you want to spend.

    If it was me I'd just get the engine sorted because hopefully the gearbox would last a few months I could save up some more money for the refurb.

    Hope this helps and good luck mate!

  3. #3
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    3k? Lol can get you forged pistons and rods for £750 delivered and know a good place who rebuild box changing ALL 9 bearings and labour for £500. Clutch can be checked and changed not much over £100 and gearbox rebuilder would fit that for you.
    Dont pay 3k for ****** pistons get the engine forged who ever removed head can fit pistons with head and sump off

    Where you located at??

  4. #4
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    Located Leicester way, rang up Courtenay but they wanted 4500 for the forged rebuild and 600 for the gearbox, would have it done by them if I had the money but I just can't justify it at the moment. Definitely edging towards the forged pistons, found some wossner pistons and pec rods for about 950, mines the A16 LER engine
    Last edited by jon2702; 8th April 2017 at 12:13 PM.

  5. #5
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    Same pistons and rods for the engines. I can get a guy who sells em iirc £750 or he can rebuild for £1600 or £2200 if you need a rebore.
    Can also get gearbox pulled and rebuilt for £500 with 2 years parts and labour warranty so you don't have to worry again,
    You could fit pistons and rods yourself. If you need the builder hes located in wrexham which isn't a huge distance from you.

  6. #6
    VXRed Antonyjamr's Avatar
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    Whos your guy? Like I said my gearbox is whining too 500 sounds good with that warranty!

  7. #7
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    Quote Originally Posted by Antonyjamr View Post
    Sorry to hear that Jon!

    I'd definitely be ringing up for quotes from other Vauxhall tuners. However 3k doesn't sound bad for all that. The standard pistons bit.. maybe someone with more knowledge would be better to inform you. To my understanding although its a 'common' fault on Z16LETs it can be avoided and engines can run strong as long as they're well maintained and looked after/not abused and warmed up. Forged pistons serve different purposes and are probably pros and cons to both. If it was me I'd lean towards forged but before hearing what people on here have to say. As for the gearbox I've got the same problem as you, mines only just started and is really faint, how loud is the whine on yours? I can't hear mine unless everything is off and windows are shut. It comes down to how much money you have to spend on this getting it fixed. It would be a good time to get the clutch done as the car will already be apart and would be cheaper then to have it done in the future on its own, though I wouldn't be having it done at 47k still a lot of life left I'd think and its just a bigger bill. But like I said it depends on how much you want to spend.

    If it was me I'd just get the engine sorted because hopefully the gearbox would last a few months I could save up some more money for the refurb.

    Hope this helps and good luck mate!
    Cheers for the advice mate. Agree with you on the clutch, should have plenty of life left in it at that mileage, half tempted to replace it though as it'll only really cost me the clutch, labour won't be much as the gearbox will be out anyway, just waiting for a cost breakdown from the Garrage that's quoting me then I guess I'll go from there ��

  8. #8
    VXRed Antonyjamr's Avatar
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    No worries mate and like I said if its not gonna break you get it all done now hopefully it'll be plain sailing from there

  9. #9
    VXRed Alastair_'s Avatar
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    I'd recommend changing the clutch if you're getting the gearbox done. If you plan to keep the car for a while then it will save you labour costs in the future getting the gearbox taken out again, might as well fit a new one while its out and pay one bill. I had my gearbox bearings, clutch, flywheel, and slave done at 45k miles; everything was on its way out lol! Its not unheard of either of clutches/flywheels packing it in with less miles as well.
    Sapphire Black Corsa VXR - Northern Ireland

  10. #10
    VXRacing ahead Kingsxfan's Avatar
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    Default Losing compression cylinder 4

    For perspective, three grand got me a full rebuild including forged rods and pistons. All gaskets and seals, crank polish, mains and big end shells, rebored, head skimmed and overhauled with new stem seals, cambelt kit and water pump . Whilst at it I got a new LUK flywheel and clutch kit for £420 which was fitted as part of the rebuild, so 3.4k if new clutch/flywheel. If you're getting all this plus gearbox refurb then you'd be looking around 4K.

    If you don't need a rebore then you could knock off a few hundred?

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