GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: Sam on 09 March 2011, 22:46
-
Right, ran a compression test today and cylinders one and 4 are very low (plugs had oil on them too). She is chucking oil out the zaust, back of block and exhaust fumes out of my oil catch tank. Am I right in thinking its either rings or head gasket?
Much love, Caistor 'about to have to strip his entire engine and hit it with a hammer' bmx
-
yup its broken.
and its head off block o clock
-
yup its broken.
and its head off block o clock
WHOOP WHOOP! Where can I get the splein tool from to unbolt the head? And also am I right in thinking that the cams will lift out with the head?
-
And also am I right in thinking that the cams will lift out with the head?
Yes they do, sealey do the spline tool you need
-
Cheers wayne, done spose hellfrauds or machine mart do such a tool do they?
-
Cheers wayne, done spose hellfrauds or machine mart do such a tool do they?
They should do :afro:
Don't forget to fit new bolts btw.
-
Cheers wayne, done spose hellfrauds or machine mart do such a tool do they?
They should do :afro:
Don't forget to fit new bolts btw.
No worries; so it new head bolts, pretty much full gasket set for cam gaskets too and new cam belt obv. Anything else? I have never done a head gasket before so need all the help I can get before I start
-
Get a tensioner with the belt too. Worth working out whats actually wrong with the engine first before buying all the kit though.
-
Get a tensioner with the belt too. Worth working out whats actually wrong with the engine first before buying all the kit though.
Low compression leads to me having to take the head off anyway so all this stuff is getting replaced no matter what. Hardly going to use the same head gasket again :grin:
-
I'd be thinking about valves out for a clean up, reseat and new stem seals while the head's off. -Maybe get the Dremel for some more excitement.
If you'd like another KR lump to prepare while you continue to drive (smokily) around I've got one sat in the corner that you can have for £50..
Good luck :smiley:
Andy
-
I'd be thinking about valves out for a clean up, reseat and new stem seals while the head's off. -Maybe get the Dremel for some more excitement.
If you'd like another KR lump to prepare while you continue to drive (smokily) around I've got one sat in the corner that you can have for £50..
Good luck :smiley:
Andy
Cheers for the offer but mine has had a little work on it. Audi TT big end bearings, lowered compression con rods. I know its not much but It just means that I would have to strip two engines at the same time so kinda defeat the point and save me about an evenings work
-
I'd be thinking about valves out for a clean up, reseat and new stem seals while the head's off. -Maybe get the Dremel for some more excitement.
If you'd like another KR lump to prepare while you continue to drive (smokily) around I've got one sat in the corner that you can have for £50..
Good luck :smiley:
Andy
Cheers for the offer but mine has had a little work on it. Audi TT big end bearings, lowered compression con rods. I know its not much but It just means that I would have to strip two engines at the same time so kinda defeat the point and save me about an evenings work
erm, hasnt this engine had work done recently ? if so wasnt the headgasket etc done then ?
-
I'd be thinking about valves out for a clean up, reseat and new stem seals while the head's off. -Maybe get the Dremel for some more excitement.
If you'd like another KR lump to prepare while you continue to drive (smokily) around I've got one sat in the corner that you can have for £50..
Good luck :smiley:
Andy
Cheers for the offer but mine has had a little work on it. Audi TT big end bearings, lowered compression con rods. I know its not much but It just means that I would have to strip two engines at the same time so kinda defeat the point and save me about an evenings work
erm, hasnt this engine had work done recently ? if so wasnt the headgasket etc done then ?
Yep, about 18 months ago :sick:
-
his only option is to whip the head off and look, it unlikely to be a head gasket issue but it the price you have to pay for haveing a look.
as it's suffering low cr on 1 and 4 its unlikely to be HG anyway my money is on a piston/ piston ring issue,
-
easy fix tho, drop the sump undo the big end caps and push the littel buggers up.
I would leave the offset bushed rods out the equation thins time, you ether want a second hand set of audi s2 pistons and rods :wink:, a set of 8 valve pistons with notches cut in them with std KR rods or a set of proper pistons and rods
-
easy fix tho, drop the sump undo the big end caps and push the littel buggers up.
I would leave the offset bushed rods out the equation thins time, you ether want a second hand set of audi s2 pistons and rods :wink:, a set of 8 valve pistons with notches cut in them with std KR rods or a set of proper pistons and rods
But then that means changing the big end bearings too along with re-grinding the crank to suit. The rods arent a problem, I recon the rings are playing up cos she was running lean at about 4k. I need to rebuild and then fack off down to stealth racing for a tune up
-
So having never been this involved in an engine before.... how do I strip her down to the head? :smiley:
-
Anyone? :smiley:
-
Right, even though I seem to be talking to myself here I have had a quote tonight for £180 + parts (which I supply). How does this sound for rings and head gasket?
-
doing rings is piece of piss.
put engine to TDC, drain oil coolant, remove manifolds, remove cam belt coverm remove camelt, remove cam cover, undo head bolts, lift cyl head.
remove sump, undo big end caps, push pistons up and out.
hone bores, fit new rings to pistons, use rng compressor to squish them, and refite everything.
-
easy fix tho, drop the sump undo the big end caps and push the littel buggers up.
I would leave the offset bushed rods out the equation thins time, you ether want a second hand set of audi s2 pistons and rods :wink:, a set of 8 valve pistons with notches cut in them with std KR rods or a set of proper pistons and rods
But then that means changing the big end bearings too along with re-grinding the crank to suit. The rods arent a problem, I recon the rings are playing up cos she was running lean at about 4k. I need to rebuild and then fack off down to stealth racing for a tune up
ouch reading that sadly i think you'll have more than a ring problem, i have a feeling you'll find piston damage.
swaping rods dosent mean new shells or grinding the cranck you can use your existing shells in new rods. even if fitted new shells you wouldn't grind the cranck unless it was worn or had surface damage.
i would suggest lifting the head yourself and checking for piston damage as it makes it a right pita if its at a garage and your not expecting that size of bill
-
easy fix tho, drop the sump undo the big end caps and push the littel buggers up.
I would leave the offset bushed rods out the equation thins time, you ether want a second hand set of audi s2 pistons and rods :wink:, a set of 8 valve pistons with notches cut in them with std KR rods or a set of proper pistons and rods
But then that means changing the big end bearings too along with re-grinding the crank to suit. The rods arent a problem, I recon the rings are playing up cos she was running lean at about 4k. I need to rebuild and then fack off down to stealth racing for a tune up
ouch reading that sadly i think you'll have more than a ring problem, i have a feeling you'll find piston damage.
swaping rods dosent mean new shells or grinding the cranck you can use your existing shells in new rods. even if fitted new shells you wouldn't grind the cranck unless it was worn or had surface damage.
i would suggest lifting the head yourself and checking for piston damage as it makes it a right pita if its at a garage and your not expecting that size of bill
Well like I said I have been quoted £180 + I source parts to do head gasket and rings by a reputable company in derby. Does this seem about right?
-
180? to take a head off and possibly do the rings? if thats true i would avoid like the plague. that maybe to possibly get you in the door then rape you with a huge bill.
having read most of your posts about your motor, imho its about time you junked the kjet n kstar and go with efi and megasquirt or such.
otherwise after getting it sorted this time, you'll be forking out again in a year or so,
most of the builds ive read about a 16vt, 300hp is usually achievable with modern fuel managment :undecided:
-
Seems too cheap, might be better to get someone who really knows VW's to have a look or help maybe.
-
£180 is ok labour rate for changeign the rings but your bill will be much bigger.
i have done quite a few nasty, intresting and fun things to vw motors.
i have never yet managed to kill the rings. you can puff enough air at them to make over 400 bhp with std rings, i'll put money no you have damaged pistons, esp as you have said it runs a bit lean, detonation car crack the top ring but it can also and normaly dose eat at the edge of the piston and expose the top ring, on engines useing spacer plates or offset bushes this is an even bigger problem as there more det prone.
-
If bits of that piston has chewed the sides of the bores then you need to factor the honing and reboring costs it would be a little more than £180, so worth checking the whole engine first and establish whats gone wrong? In the end you might be better off with a newish block to work on without the grief that has gone on so far!
-
In the end you might be better off with a newish block to work on without the grief that has gone on so far!
Exactly why I mentioned it might be worth putting off buying any bits till you know whats wrong :rolleyes:.
-
if it still drives you can pop up the ws if your not to far away and lift the head if you want,
if pistons are fked think i have a set or two of 2nd hand kr pistons you can have to get it going again