GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: Cable on 29 March 2010, 12:14
-
All of a sudden the car started feeling like it was running out of petrol, but i had petrol.
Took the head off this morning and found this.
(http://i146.photobucket.com/albums/r269/cable07/IMG_0297.jpg)
(http://i146.photobucket.com/albums/r269/cable07/IMG_0298.jpg)
(http://i146.photobucket.com/albums/r269/cable07/IMG_0301.jpg)
(http://i146.photobucket.com/albums/r269/cable07/IMG_0300.jpg)
(http://i146.photobucket.com/albums/r269/cable07/IMG_0299.jpg)
-
Gutted.
-
Gutted.
+1 That sucks man :sad:
-
tbh its not that bad.
the head probably wont need skimming, but worth doing it for about 30 quid.
new gasket + head bolts
cambelt while your there.
simples :) 100 quid fix IMO
-
yh pissed! but though it was gunna be worse.
must have been caused by preignition, sh!tty cheap fuel.
does any know the headbolt torque values?
and if the bolts can be used twice?
-
tbh its not that bad.
the head probably wont need skimming, but worth doing it for about 30 quid.
new gasket + head bolts
cambelt while your there.
simples :) 100 quid fix IMO
putting the vr6 in next week so gunna leave the cambelt and skimming cuz it has never gone above 92 degrees c.
i know some bolts can be used twice just not sure about these.
-
no, dont re use head bolts, they are stretch bolts and wil probably snap the second time.
and they have to be done up in a certain order,
ill check auto data when im home.
what year and engine is it?
-
yh pissed! but though it was gunna be worse.
must have been caused by preignition, sh!tty cheap fuel.
does any know the headbolt torque values?
and if the bolts can be used twice?
Nope they are stretch bolts and should only be used once, also to not fit a new cambelt is madness as it will have been stretched.
-
no, dont re use head bolts, they are stretch bolts and wil probably snap the second time.
and they have to be done up in a certain order,
ill check auto data when im home.
what year and engine is it?
As if you just asked that, it's blatantly a 2.0 16v ABF :grin:
-
i know the order, in to out.
some stretch head bolts you can use twice, but might just replace them at £2 each.
its a 95 abf.
Cheers.
-
Nope they are stretch bolts and should only be used once, also to not fit a new cambelt is madness as it will have been stretched.
[/quote]
Changing to vr6 next week so no point of getting a cambelt.
-
joe, i ask because dont know if they chanegd depending on year etc etc, i know its a 16v lol.
and wy bother doing this work, when your changing next week anyway lol.
-
im selling the engine to a friend and need the car this week, hes gunna replace what he wants to when the engine is out of the car.
-
Nope they are stretch bolts and should only be used once, also to not fit a new cambelt is madness as it will have been stretched.
Changing to vr6 next week so no point of getting a cambelt.
If you fitting a VR next then why bother, bodging the ABF back together is daft, you could sell the engine as is on the other hand with a broken cambelt and damage it will be worth peanuts.
-
What does the surface of the head look like? If the gasses have burned through the steel gasket rings then it just as likely burned the alloy head. Also it looks like the piston in the close-up pic has be hit by a valve at some time.....? No point putting it back together if the head is burned or pitted because it will just blow again straight away.
-
What does the surface of the head look like? If the gasses have burned through the steel gasket rings then it just as likely burned the alloy head. Also it looks like the piston in the close-up pic has be hit by a valve at some time.....? No point putting it back together if the head is burned or pitted because it will just blow again straight away.
Looks like it in the pictiure but no valves have ever hit it, the block and head are fine and flat etc, it runs fine and its got a metal head gasket now.
-
Nope they are stretch bolts and should only be used once, also to not fit a new cambelt is madness as it will have been stretched.
Changing to vr6 next week so no point of getting a cambelt.
If you fitting a VR next then why bother, bodging the ABF back together is daft, you could sell the engine as is on the other hand with a broken cambelt and damage it will be worth peanuts.
Because i need to use the car, the belt and tensioner were replaced 20,000 miles ago to there fine to re-use.
-
Nope they are stretch bolts and should only be used once, also to not fit a new cambelt is madness as it will have been stretched.
Changing to vr6 next week so no point of getting a cambelt.
If you fitting a VR next then why bother, bodging the ABF back together is daft, you could sell the engine as is on the other hand with a broken cambelt and damage it will be worth peanuts.
Because i need to use the car, the belt and tensioner were replaced 20,000 miles ago to there fine to re-use.
That your choice, however your mad a cam belt once it has been tensioned should not be reused as it will have stretched and will snap or jump.
Also that piston has marks from a valve hitting it and that piston does not look to clever against the rest.
-
As long as they are put on the same way then it doens't matter, + the belt was in good condition + im not going to keep the engine for longer than 2 weeks.
The piston doesnt have any valve marks, because the other side to what you see in the photo didnt have any, its just a manufcturing mark from when it was made. also the piston is a different colour because the fuel wasnt burning due to the lack of compression.
-
Make sure the piston isn't at TDC.
I hate people saying that, it's best they are all a bit down so that valves don't catch before you line it all up.
-
i usually line the cams up before taking the head off, but if it changes yh i just make sure i turn the engine 90 degrees before moving the cams.
-
I would listen to Wayne's advice.
He is usually pretty spot on.
What is the damage on that piston crown? it does look like the valves have hit it.
Always use new head bolts, not because they might snap, but more importantly once stretched they won't stay tight if you use factory settings.
-
I would listen to Wayne's advice.
He is usually pretty spot on.
What is the damage on that piston crown? it does look like the valves have hit it.
Always use new head bolts, not because they might snap, but more importantly once stretched they won't stay tight if you use factory settings.
its not a valve hitting it because it only had that mark on the one side of the piston, its just a manufacturing mark, i think they were cast and not forged .
The inlet valve doesn't have that shape, they are concave so they wont be able to mark the piston in that way.
-
Myself and others are only going on the pics, which are just pics, not the same as examining it in person.
-
Myself and others are only going on the pics, which are just pics, not the same as examining it in person.
yh it does look like it in the picture.
-
I have arrowed a mark that is I am 99% not factory but looks like a valve has hit it in the past.
(http://i125.photobucket.com/albums/p51/jmfangio5/IMG_0300.jpg)
-
+1 I am sure that would not have passed QC.
-
+2
I can't see any cast marks on the other crowns.
The indents are the shape of 2 valves.