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Topic: Piston removal (Read 2927 times) |
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leewar
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Piston removal
« on: Mar 28th, 2012, 10:25pm » |
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Hi All, As in fitting head gasket to a 2.0L, is it possible to remove a piston from the bottom of the engine while in situ, removing the sump  If not, I've lost another scorpio  Cheers Lee
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gozz
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Re: Piston removal
« Reply #1 on: Mar 28th, 2012, 11:05pm » |
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Lee.
What's going on then ? you can't readily remove the sump in situ,the pistons don't come past the crank,they must come up
GOZZ.
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Simmo
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Re: Piston removal
« Reply #2 on: Mar 29th, 2012, 7:02am » |
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Gozz. If you look at Lee's other post re the head gasket I think the info you want is there.  Now it's here!.
Hi All, With the info on here and the advice given, I managed to remove the head, inlet manifold still attached, and found that all is not well. The gasket had definitely gone, between pots 2 and 3, the third piston at BDC and with about half an inch of water sitting in it. Once I had removed the water, I noticed that the piston head had been eaten, about half an inch missing. No scoring noticeable so maybe could be worse. So I have a question!! Can the sump be removed, partly or fully, so the piston can be removed from the bottom? I ask this because I can't remove the engine block. If the answer is no, then I am about to lose another beloved scorpio Thanks in advance. Lee
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Scorpio_Mike
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Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
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Re: Piston removal
« Reply #3 on: Mar 29th, 2012, 7:23am » |
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Engine out job I'm afraid
Why can't you remove the block ?
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Sierra XR4i's are great...especially when fitted with 4WD 
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leewar
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Re: Piston removal
« Reply #4 on: Mar 29th, 2012, 8:34am » |
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Hi Mike and Mike, Firstly, dont have the equipment, the space. I do have the time but for monetary reasons it might not be worth it! Head gasket and bolts already purchased, (quite cheaply before finding out I had a problem), but would still need lifting gear, new piston head, oil, antifreeze, tensioner plunger etc.
Hi Gozz, Yes I knew the pistons have to be removed from the top but wanted to know if they can be removed with the block in situ Lee
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martin_rowe
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Re: Piston removal
« Reply #5 on: Mar 29th, 2012, 8:52am » |
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Yes piston can be removed, easy job to drop the front s/frame down, support engine, disconnect steering u/j, disconnect engine mtgs, then remove bolts from s/frame. Will give access to bottom of engine.
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gozz
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Re: Piston removal
« Reply #6 on: Mar 29th, 2012, 9:01am » |
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As easy as that eh Martin Perhaps for you and I
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leewar
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Re: Piston removal
« Reply #7 on: Mar 29th, 2012, 12:35pm » |
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Martin, Will attempt anything. Is it possible for you to write down a comprehensive agenda of what to do, when, how and what with? Cheers Lee
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Matt
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Re: Piston removal
« Reply #8 on: Mar 29th, 2012, 12:52pm » |
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Thats the same way i drop engines out by dopping the subframe
cross member at the back off 4 large bolts in the sub frame the you can either drop the wish boned off or undo the top mounts
some beefy chunks of wood accross yhe inner edge of the wings and some good rope arount the engine and undo the engine mounts and steering uj and lowet it down on a jack
as your leavimg engine in try and get a axel stand under the bell housing help hold it up
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leewar
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Re: Piston removal
« Reply #9 on: Mar 29th, 2012, 6:10pm » |
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Matt, thanks for that. I wish I understood all of it Diagrams maybe!! Instructions for a complete novice would help ie step by step would be great. Cheers Lee
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leewar
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Re: Piston removal
« Reply #10 on: Mar 30th, 2012, 10:35am » |
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Anyone with a detailed step by step would be great Cheers Lee
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martin_rowe
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Re: Piston removal
« Reply #11 on: Mar 30th, 2012, 11:53am » |
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on Mar 30th, 2012, 10:35am, leewar wrote:| Anyone with a detailed step by step would be great Cheers Lee |
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Think I've covered prety much all of it above, start with the car as high as you can get it on a pair of axle stands, the frame will drop down far enough to get the sump off & allow you to undo big end bolts.
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5stud
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Re: Piston removal
« Reply #12 on: Mar 30th, 2012, 12:00pm » |
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before you go to fare if you intend to use a new piston find out the cost avalabilety.when i inquird ten years ago they whear well over £100 each then
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leewar
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Re: Piston removal
« Reply #13 on: Apr 2nd, 2012, 10:43pm » |
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Looking for a piston if anyone has one spare
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Mike H
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Renault Clio
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Re: Piston removal
« Reply #14 on: Apr 3rd, 2012, 1:30pm » |
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So what Lee wants to do is get sump off to undo big-end bolts, then piston can come out the top. Which, apparently, it can only do anyway.
How did the piston crown damage occur? And how deep is it actually?
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Mike H
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leewar
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Re: Piston removal
« Reply #15 on: Apr 3rd, 2012, 1:49pm » |
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Mike, A good bit of the top edge has just been "eaten" away, with a little bit of depth, when the car broke down on the A12.  It looks like the gasket went between two and three. When the head was removed number three had about half an inch of water in it!!
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Mike H
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Renault Clio
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Re: Piston removal
« Reply #16 on: Apr 3rd, 2012, 4:09pm » |
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Interesting - broke off due to water pressure? (hydraulic lock). no signs of the missing bits?
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Mike H
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Matt
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Re: Piston removal
« Reply #17 on: Apr 3rd, 2012, 5:55pm » |
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Check the coils and injectors its been pinking by the sound of it and thats whats done the gasket
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Mike H
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Renault Clio
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Re: Piston removal
« Reply #18 on: Apr 5th, 2012, 8:21pm » |
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Ah that rings a bell ~ was it? Pinking....
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Mike H
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leewar
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Re: Piston removal
« Reply #19 on: Apr 6th, 2012, 12:41pm » |
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Not when is was driving before it broke down and blew a gasket!!!!!
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