Engine rebuild not going as it should

[David Ayers]

Hi All

Been rebuilding my 04 plate Clio 182 engine and have come across a serious problem, new main crank bearings fitted, new con rod bearings fitted, new valves and headgasket fitted, when i try to turn the engine to TDC with the camshaft tool in place engine wont turn enough to get to TDC, any ideas?

Thanks in advance

Dave

 

[Ol’ Tarby]

Cams 180 degrees out and pistons touching valves? Wild guess could be miles off

 

[David Ayers]

Cams 180 degrees out and pistons touching valves? Wild guess could be miles off

I'll give it a go?

 

[Ol’ Tarby]

I'll give it a go?

@bloke is the man. He'll have a better idea

My theory could be miles off mate, but worth checking I suppose

 

[NorthloopCup]

Did you turn the bottom end over after you’d built it up? As in before the cylinder head went on.

 

[David Ayers]

Did you turn the bottom end over after you’d built it up? As in before the cylinder head went on.

Hi Yes did all the turning of crank etc, all good head on , little half moons to bottom of cams and still not going to TDC?

 

[NorthloopCup]

Hi Yes did all the turning of crank etc, all good head on , little half moons to bottom of cams and still not going to TDC?

You’ve got the cams 180 out mate. The little half moons should be at the top on the cams when you put the timing tool in.

 

[Ol’ Tarby]

Hi

 

[David Ayers]

Half moons at the top??? watched three hours of you tube telling me to put the little half moons at the bottom???

Confused .com big time...

 

[bloke]

so crank was set to tdc, head fitted, cams fitted without moving crank?

 

[David Ayers]

so crank was set to tdc, head fitted, cams fitted without moving crank?

Crank was turned through 90Degrees to allow for clearance for Valves, then turned crank to get to TDC but was interfering with valves so stopped and posted on Clio forum.

 

[David Ayers]

Head fitted, before tightening cam cover turned crank through 90 Degrees to allow for valve clearance.

Tightened cam cover and then tried to get to TDC , pistons interfering with valves so posted on forum, do the little half moons go on the top or the bottom, if they go to the top i'm going to be very rude to a couple of people on You Tube.

Regards

dave

 

[NorthloopCup]

Head fitted, before tightening cam cover turned crank through 90 Degrees to allow for valve clearance.

Tightened cam cover and then tried to get to TDC , pistons interfering with valves so posted on forum, do the little half moons go on the top or the bottom, if they go to the top i'm going to be very rude to a couple of people on You Tube.

Regards

dave

I’m afraid they do go at the bottom, so I hope you haven’t been rude to anyone on YT mate!

I can only think you’ve not got the crank pin in the correct position.

 

[David Ayers]

[QU

I’m afraid they do go at the bottom, so I hope you haven’t been rude to anyone on YT mate!

I can only think you’ve not got the crank pin in the correct position.

OTE="NorthloopCup, post: 11642349, member: 61663"]I’m afraid they do go at the bottom, so I hope you haven’t been rude to anyone on YT mate!

I can only think you’ve not got the crank pin in the correct position.[/QUOTE]

I’m afraid they do go at the bottom, so I hope you haven’t been rude to anyone on YT mate!

I can only think you’ve not got the crank pin in the correct position.

 

[David Ayers]

Morning, all good no nasty replies or messages. I've added some photos to show position of valves when set with special tool and position of crank when aligning pin positioned just in case i'm going mad, looking forward to your replies?

Am i doing something stupid??

Obviously if i were to fit the head the valves are going to clash with the piston at TDC, whats the magic solution?

Is it possible the previous owner fitted different Cams? that's the only thing i can think of.

Thank's in advance

dave

 

[NorthloopCup]

Morning, all good no nasty replies or messages. I've added some photos to show position of valves when set with special tool and position of crank when aligning pin positioned just in case i'm going mad, looking forward to your replies?

Am i doing something stupid??

Obviously if i were to fit the head the valves are going to clash with the piston at TDC, whats the magic solution?

Is it possible the previous owner fitted different Cams? that's the only thing i can think of.

Thank's in advance

dave

Honestly mate, all I can think of is that one of the cams is 360 out as both lots of calves shouldn’t be open that much together.

 

[Big_Steve_T]

Cams in the right location? Inlet in exhaust and vise versa?

 

[NorthloopCup]

Cams in the right location? Inlet in exhaust and vise versa?

Can’t get that wrong mate due to the way the dephaser fits the inlet cam

 

[Ol’ Tarby]

Can’t get that wrong mate due to the way the dephaser fits the inlet cam

Surely they can't be 360 out either? Only possible to be 180 out?

 

[NorthloopCup]

Surely they can't be 360 out either? Only possible to be 180 out?

This is what I’m trying to get my head around mate as it doesn’t make any sense!
If it was 180 out, the slot for the cam tool would be incorrect.

Crank pins in the right place, slots for the cams is correct......but it doesn’t make sense!

 

[NorthloopCup]

Surely they can't be 360 out either? Only possible to be 180 out?

This is what I’m trying to get my head around mate as it doesn’t make any sense!
If it was 180 out, the slot for the cam tool would be incorrect.

Crank pins in the right place, slots for the cams is correct......but it doesn’t make sense!

 

[Ol’ Tarby]

Wrong valves fitted? IE they're too long?

 

[Ol’ Tarby]

@NorthloopCup

 

[David Ayers]

Wrong valves fitted? IE they're too long?

Morning, Compared valves with ones i took out and they bare exactly the same length ETC, Talk about doing my head in????

Even had an experienced Mechanic friend have a look and he's scratching his head as well.

Regards

dave

 

[bloke]

When you built it back up did you get as far as cam pulleys going On?

Think you might of done what I did once ?

 

[David Ayers]

When you built it back up did you get as far as cam pulleys going On?

Think you might of done what I did once ?

Yes, put everything back turned engine over to test and everything went solid

 

[bloke]

100% didn't get cams mixed up.

 

[David Ayers]

100% didn't get cams mixed up.

Absolutely not, though did first time I put it all together but realised my mistake when I tried to fit the dephaser and pulley wheel,

Regards

Dave

 

[bloke]

Sorry to be the bearer of bad news but you've bent the valves. Btdt.

 

[David Ayers]

Sorry to be the bearer of bad news but you've bent the valves. Btdt.

Hi

Valves have all been replaced and ground in havn't refitted the head since that's been done, waiting to see if any one has come across this problem before.

Cheers

Dave

 

[bloke]

still looks like cams are mixed up for both pairs of valves to be open at same time.

 

[Josh1708]

Only thing I can think is if the cam lobes have spun. Pretty sure these are pressed on. Unlike billet cams that are made from 1 piece.


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[David Ayers]

Only thing I can think is if the cam lobes have spun. Pretty sure these are pressed on. Unlike billet cams that are made from 1 piece.


Sent from my iPhone using Tapatalk

Hi, Thanks for the reply, will investigate further.

Thank's again

Dave

 

[Aydon182]

scratch that, the bigger half moons should be at the top

 

[NorthloopCup]

unless im looking at the picture wrong, you have the smaller half moons at the bottom, so they are 180 out, the smaller half moons should be facing the top

I’m afraid to say you’re wrong mate. Smaller half moons do indeed go at the bottom as pictured.

 

[David Ayers]

So, glad we cleared that up.little half moons at the bottom.

Has anyone out there got a standard set of 182 cams?

Regards

Dave

 

[bloke]

Loads of the bloody things!!

 

[David Ayers]

Loads of the bloody things!!

So, How much for a pair of standard cams?

How quick can i get them?

Regards

Dave

 

[bloke]

What's actually wrong with yours?

 

[Turbo steve]

Have you got two of the same cam