Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

Nut jamming engine

voodoo VT

New Member
Joined
May 4, 2009
Messages
38
Reaction score
0
Points
0
Location
Gold Coast
Members Ride
VT Executive
Right-o major problem.

I was just about to bolt the gearbox back to L67 to then start install tomorrow morning.

But something is stopping the engine from turning a full cycle, its doing about ¾ of one full rotation.

On sat evening I noticed the alternator power-lead nut had come off, after looking for some time I thought maybe it has dropper onto the ground and left it at that.

At this time the valve covers and charger where off.

I’m thinking the nut has fallen into the air inlet and now is on top of a piston.

Now who has a trick for getting that out?? I have thought about slinging the engine upside down and trying to get it to come out as it went in. Dose anyone know if this might work or if ill be wasting my time and should just pull the engine down to get in there.

I can’t be 100% sure this is the problem but the engine was spinning freely before I moved it into the shed to get ready for the swap over.. Any other thought on what may have happened here ??

(looks like that cam might be going in sooner then I thought)
:hit:
 

delcowizzid

on holiday
Joined
Jul 8, 2008
Messages
6,993
Reaction score
434
Points
83
Location
NZ
Members Ride
в∞ѕтεכ √&
flex magnet down the plug hole
 

ScoHar

Jizz in my pants
Joined
Apr 10, 2006
Messages
836
Reaction score
7
Points
0
Location
CHCH, NZ
Members Ride
VS Senator
don't push too hard it might be stuck between a valve and valve seat = damage.
 

Not_An_Abba_Fan

Exhaust Guru
Joined
Aug 18, 2006
Messages
14,410
Reaction score
937
Points
113
Location
Bunbury, WA
Members Ride
Strange Rover
If it won't fit through the plug hole it won't fit through the valve opening. I would say it has jammed open a valve and the valve is hitting the top of the piston. (If it has indeed dropped down inside the intake.) Take the covers off again and spin the crank backwards and see which valve stays open. Then you may be able to get down there with the chager off again.
 

voodoo VT

New Member
Joined
May 4, 2009
Messages
38
Reaction score
0
Points
0
Location
Gold Coast
Members Ride
VT Executive
Right o the update.

Yeh I’m thinking maybe it has just jammed a valve open. I bought myself a flexible magnet from our good friends at super **** auto.

I’ve had it down every plug hole feeling the top of the piston doesn’t seem to pick up any loose object as I’d expect the magnet to suck the nut to it if its floating around in there. (Doubt it will come though the plug hole but at least to locate it.)

I pulled the charger off and has a quick feel around couldn’t feel anything so fair. But I think I’ll have to work out witch valve we are working with to make sure its fully open if the nut is jammed in there, so the magnet may pick it it.

Is there any changer in could work its way down the top right corner of the valve ports? There is a gap there but I’m not sure to what depth it runs.


Cheers to everyone for the replies on there, really not keen to pull that engine down to get the barsted out !!
 

HARVZ-6

New Member
Joined
Nov 2, 2008
Messages
826
Reaction score
2
Points
0
Age
29
Location
Riverton sa
Members Ride
VT spac super6
still got the rocker covers off?

thats ya best bet to see if its a valve

make sure theyre all sitting right

but note that wouldnt stop the engine turning over unless the piston is hittin a valve, and that will be obvious with the covers off

hope this helps mate
 

voodoo VT

New Member
Joined
May 4, 2009
Messages
38
Reaction score
0
Points
0
Location
Gold Coast
Members Ride
VT Executive
still got the rocker covers off?

thats ya best bet to see if its a valve

make sure theyre all sitting right

but note that wouldnt stop the engine turning over unless the piston is hittin a valve, and that will be obvious with the covers off

hope this helps mate

no worries man got a few things to try out tomorra now.

chees to everyone for ya help.
 

Baldric

The BOSS
Joined
Dec 5, 2003
Messages
710
Reaction score
2
Points
0
Age
42
Location
Brisbane
Members Ride
VE GTS M6
unbolt all rockers and see if it roates then.. if it does 1 by one add a rocker back into the equasion then you will isolate it to a selected area
 

voodoo VT

New Member
Joined
May 4, 2009
Messages
38
Reaction score
0
Points
0
Location
Gold Coast
Members Ride
VT Executive
Today’s effort so fair,

I took both covers off charger off loosened all rockers, engine still won’t spin full rotation. The sound when it locks up sounded deeper and I thought maybe the nut has gone though an oil channel jamming the crank somewhere

So I dropped the sump and still no sign of the barsted. But I have located it to number 3 cylinder. I thought I may be able to unbolt the con rod and drop the piston out of the bottom of the cylinder but of course there isn’t enough room.

Can I pull the valves out and get in from there or are they seated from the under side of the cylinder head?

I’ve had the magnet down every hole. Plug, injector, air intake. And I can’t seem to feel anything loose in there.

I’m guessing with the rockers loose if the nut was to be jamming a valve open this would alloy the engine to spin freely while the rocker is loose?

So with that in mind I’m guessing it must have made its way on to the piston??

Good news is the engine looks good from underside and besides a couple of small spots on the sump nice and clean in there too.
 
Top