Engine rebuild
Posted
#1617727
(In Topic #221148)
Old Timer
Engine rebuild
Hi all, I have a 1991 golf 1.8 gti. Took my car for MOT, but was smoking like hell. The Mot tester said its burning oil thats whats causing it to smoke like this. Got it home and striped the engine to bits. Now i need to know how i should put the piston rings on the pistons and which way they fit. Also where is the best place to get the rings from? Is there a step by step guide on here that can make things easy for me? Thanks in advance
Posted
Local Hero
A Haynes manual is a good start.
Did you do a compression test before stripping the engine, if so what was the results?
What mileage has the engine covered?
What colour was the smoke from the exhaust?
Did you do a compression test before stripping the engine, if so what was the results?
What mileage has the engine covered?
What colour was the smoke from the exhaust?
1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
Posted
Old Timer
Engine rebuild
11 -12 psi in all cylinders but there was back pressure too
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Posted
Old Timer
As has been said, Haynes a good place to start.
In my opinion, if you have the engine stripped, I'd be checking for wear /scoring on the cylinder bores. May well be worth getting it honed or re-bored (if it's required) but that would require over size pistons. I would suggest finding a good engine workshop to take a look, they will be able to source the right parts as well. If you have taken the time to strip the engine down its worth spending the money/time to get it properly checked etc. You'll only do it once.
I had a block re-bored, crank checked and a full balance done (I already had the oversize pistons) for Ł700. That included gasket set, rings, main and big end shells. The ring set came with good instructions for fitting. You'll need some ring pliers and ring compressor to get them back in. I got both off ebay for about Ł10.
In my opinion, if you have the engine stripped, I'd be checking for wear /scoring on the cylinder bores. May well be worth getting it honed or re-bored (if it's required) but that would require over size pistons. I would suggest finding a good engine workshop to take a look, they will be able to source the right parts as well. If you have taken the time to strip the engine down its worth spending the money/time to get it properly checked etc. You'll only do it once.
I had a block re-bored, crank checked and a full balance done (I already had the oversize pistons) for Ł700. That included gasket set, rings, main and big end shells. The ring set came with good instructions for fitting. You'll need some ring pliers and ring compressor to get them back in. I got both off ebay for about Ł10.
Posted
Old Timer
Engine rebuild
Ok so the engine has neen striped out, npt doing any fancy colours just want it running. Now waiting for head back from the engineers and bits to arrive. So here it is.
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Posted
Old Timer
Engine rebuild
Here is pic of piston with oil on top
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Posted
Old Timer
Looks like you've got some scoring on the bore of no 4 cylinder - what are the other cylinders like? Even if you put new rings in, if the bores are scored, there is still the potential for oil to get past.
It could just be the valve stem oil seals that are shot.
How many miles has the engine done?
It could just be the valve stem oil seals that are shot.
How many miles has the engine done?
Posted
Old Timer
Engine rebuild
The engineer has said the stem seals are shot so he is replacing them. Mileage wise its a bit scary as Mot in 2013 shows 167 k. Then in 2014 it shows 97k, now it shows 99k.
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Posted
Local Hero
maybe 2013 was original clocks, and 2014 replacement that said would only be 175k max with average people using cars as toys only. ..Greenmk1 said
The engineer has said the stem seals are shot so he is replacing them. Mileage wise its a bit scary as Mot in 2013 shows 167 k. Then in 2014 it shows 97k, now it shows 99k.
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T25 Diesel…sameoldblueshiŁ (currently under resto)
Rocco gt2….1990 secret 2…(currently under resto)
Mk4 99 1.8t indigo blue Gti with 43k miles
Caster 93 clipper JH Green cabby
Snowy 91 GTi White cabby( sat waiting for inspiration)
Myvalver 89 GTi Grey mk2 16v
Yuppy Flu 91 GTi Flash Red Sportline
Golf mk1 owner's club on Spotify
Mk1 golf owners club playlist: Golf mk1 owner's club playlist - YouTube
Posted
Regional Host NE
not a to technical task to replace
a set of valve stem seals probably
no reason to take the engine apart
a set of valve stem seals probably
no reason to take the engine apart
Do not know a lot but willing to help if possible
1989 Sapphire Blue Mk1 Cabriolet KR
1985 Atlas Grey Mk2 GTI 2.0 ABF
1989 Sapphire Blue Mk1 Cabriolet KR
1985 Atlas Grey Mk2 GTI 2.0 ABF
Posted
Old Timer
Engine rebuild
Oil rings were totally worn out, stems seals also replaced as they were also solid. Just got to get the rocker cover breather welded on as there was a lot of rubbish and grit in it. Any idea wot type of weld i should use on it. Mig or gas?
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Posted
Regional Host NE
just do what you think is best
nobody can tell you how to do
things they can only advise you
sit back think and do it the right
way
nobody can tell you how to do
things they can only advise you
sit back think and do it the right
way
Do not know a lot but willing to help if possible
1989 Sapphire Blue Mk1 Cabriolet KR
1985 Atlas Grey Mk2 GTI 2.0 ABF
1989 Sapphire Blue Mk1 Cabriolet KR
1985 Atlas Grey Mk2 GTI 2.0 ABF
Posted
Regional Host NE
why go to the extent of taking
your engine apart and giving it
to a third party if you are clued
up to strip it why not rebuild it
your engine apart and giving it
to a third party if you are clued
up to strip it why not rebuild it
Do not know a lot but willing to help if possible
1989 Sapphire Blue Mk1 Cabriolet KR
1985 Atlas Grey Mk2 GTI 2.0 ABF
1989 Sapphire Blue Mk1 Cabriolet KR
1985 Atlas Grey Mk2 GTI 2.0 ABF
Posted
Old Timer
Nicci21paul, i gave it to an engineer to get the head skimmed so i dont have any problems later on, at the same time he offered to put the stem seals in. Anyway everything is all put together and turned it over today it started but was miss firing on cylinder 2 & 4. Any ideas what could be causing this?
Posted
Old Timer
I have checked for spark on all leads and is present on all of them.
Posted
Regional Host NE
swap the plugs around from
good cylinders to bad if no change
compression test would be
probably the next step mate
good cylinders to bad if no change
compression test would be
probably the next step mate
Do not know a lot but willing to help if possible
1989 Sapphire Blue Mk1 Cabriolet KR
1985 Atlas Grey Mk2 GTI 2.0 ABF
1989 Sapphire Blue Mk1 Cabriolet KR
1985 Atlas Grey Mk2 GTI 2.0 ABF
Posted
Local Hero
have you got the hv leads on the correct cylinder's
1-3-4-2
1-3-4-2
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Posted
Regional Host NE
hi so the engineering company skimmed the
bare head or did you send it complete and
they stripped it and then rebuilt ?
bare head or did you send it complete and
they stripped it and then rebuilt ?
Last edit: by nicci21paul
Do not know a lot but willing to help if possible
1989 Sapphire Blue Mk1 Cabriolet KR
1985 Atlas Grey Mk2 GTI 2.0 ABF
1989 Sapphire Blue Mk1 Cabriolet KR
1985 Atlas Grey Mk2 GTI 2.0 ABF
Posted
Old Timer
Engine rebuild
Hi all, yes firing order is correct 1 3 4 2, also i have got good compression on all cylinders. We changed spark plugs around but was still the same. So now am thinking could it leads, plugs.
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Posted
Old Timer
Engine rebuild
Engineering company built the head up as i sent it full.
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