Bending spark plugs or the valves?

 

It the pistons are hitting the spark plugs, then the valves are going to be fubar as well, whip the head off and have a look, but I suspect some large damage.

 

Or someone has installed long reach plugs. Check them for suitability

Mike

 

To bend anything its got to be properly messed up!

 

OP doesn't say to what extent the plugs are bending, could just be the earth tang. Iv'e been having a lot of trouble running the MGB lately until I found a plug with a closed gap. I seem to remember dropping it onto the garage floor when I checked the timing - They are easily bent and it could be an overlength plug has been fitted.

Mike

 

Could be, I'd still take the head off again to check for shrapnel damage even if its just the tips of the plugs.

 

what ever you do DONT turn it over with the head off you`ll shift the liners

 

Put plugs 1 and 2 in cylinders 3 and 4?

 

Already done that.....bent the tips of those as well!

 

If you are getting clattering on turning the engine over together with bending the plug tips, I would suggest that there is something else in the cylinders sandwiched between the piston head and the plug. Broken valves perhaps. Sounds that you will have to remove the head to investigate or get some sort of camera in there. Usual precautions when taking the head off - lock cams, dont move crank or you will lift the liners etc.

Best of luck with it

Mike

 

Thanks, well like I say....its meant to have had a replacement cam so I am therefore thinking the belt/timing hasn`t been set up right hence bending the valves!!
Would this be likely?
thanks

 

Sounds FUBAR to me

Off with it's head

 

It sounds like the mother of all head skims to me!

On a serious note, my first thoughts are:
Someone has fitted some fancy domed pistons (unlikely)
A valve head have come off in 3 and 4 and is sitting on top of the piston (most likely)

 

It sounds like the mother of all head skims to me!

On a serious note, my first thoughts are:
Someone has fitted some fancy domed pistons (unlikely)
A valve head have come off in 3 and 4 and is sitting on top of the piston (most likely)

+1 on what this guys says

 

Could this be the reason the head will only take one skim? Try two washers on the plug and see what happens. There is a serious clearence issue here. Dose it clatter with the plugs out?

 

Are you going to open it up and post the results? Think we would all like a look.

 

Would be interesting to see the cause. Could be one of many things, so interested to see what it is.

 

Hi, yes I will most likely whip the head off so I can see what has happened.
do you have to drop the engines in the mgf as it looks a bit too tight to come up through the port hole

 

How much is a knackered engine worth? :dunno:
I would like a good engine to practice on, but maybe using a knackered one to strip and rebuild would be usefull?

 

The other option for the chatter could be a fubared bottom end. If the big end bearing is completely gone the piston will rise up that little bit more and could come up enough to hit the bottom of the plug.

As has been said though, many people will be interested in what it actually is, it's better than the soaps!

 

The other option for the chatter could be a fubared bottom end. If the big end bearing is completely gone the piston will rise up that little bit more and could come up enough to hit the bottom of the plug.

As has been said though, many people will be interested in what it actually is, it's better than the soaps!

Right then!!...I think I have `maybe` found the cause of the problem but I think I might just need a bit of clarification NOT!!

Pics with the head off!!
(Obviously this is what happens when you get someone to put new belts on and they don`t time it up correctly)!!!...not me or by me but the previous owner. They must have got some monkey who thought he knew what he was doing putting new cambelt/VVC belts on.....oops a daisy

1 of the valves was stuck in pot 3 and the other 2 were in pot 4....maybe this could give me the answer as to why spark plugs 3 and 4 were bending at the tip and that it wouldn`t start up?

 

Ouch, some nicely killed pistons there. Looks like the valves have hit no.1 piston too.

 

BIG OUCH! Impressive damage that.

My TF160 came with a broken cambelt but damage was only some bent valves and no damage to head or pistons. Whew! Must have been very low engine revs when it went.

One day I'll get it back together!:dunno: But I'm not in a hurry, it's supposed to be a hobby car. (Actually just got to reassemble the head and put it back on and then slip the engine back in the subframe/car.)

 

Woo that's bad! Well you have a choice

New engine or a big rebuild

 

Could that much damage weaken the engine block?

 

Certainly can't have been good for the bottom end bearings that's for sure!

 

Wow. Not seen one that bad for years. If ever.


Sent from my iPhone using Tapatalk

 

Ouch. Piston number 4 looks as though it is cowering and scared to come out. :dunno:

 

Are those pistons all in the right place? 1,2 and 4 at the bottom, and 3 at the top?

 

Wow! That engine is well and truely lunched. Weigh it in at the local scrappy - unfortunately that's all it is good for. That or a rather out-sized paperweight.

 

Thats as bad as I have seen. I reckon there a snapped conrod or two in there as well.

As Rob says, there is no point in even trying to do anything with that.