....... First it was running on 3............then I found this....



and this..........



and this.......










No idea what has happened, looks like something has got into the chamber?! Cam, lifters, Turbo, etc all ok with no bits missing!!

 

bloody hell man, lucky you checked it out before it got worse.
what's the plan of action then?

 

its the rings mate

 

oh dont tell me that the nms head?

 

Could it be any worse??!! That's a Ł640 NMS head thats just been written off

I'm thinking this may be the last straw and might break the car

I dont think it is, the bore is fine! No scoring, nothing except a very very small amount of pitting at the very top.

 

Oh dear

 

shite thats bad- wot a nightmare

 

just get the chamber cleaned up and replace the valves, should be fine, granted the CR in that cylinder may drop a little.

 

can that head not be repaired?

 

break it man

 

Gutted for you mate, hope you get it sorted

 

nice

 

lol A little?? There are some really deep chunks missing, cant really see just how bad it is in the pics, around the valve seats a proper fucked too.


I dont know??

 

crap mate dident expect that dont break it

 

before you panic, contact NMS with the pics, what pistons are they?
they should be easy to replace cheap enough.

 

hi mate, are your injectors all complete?

 

Yeah thats what I was thinking, pistons are just standard so as you say cheap enough.

 

Alright Louie, not looked i'll see tomorrow! Good idea.

 

second thoughts, have you compressed the valves in to see if the valve guide/seats are complete?

 

i've got spare pistons if you want to use a used one, you sure it's not lots of low impact det marks?
maybe one cylinder running lean?
i've never seen it that bad, but i have got 4 knackered oversized pistons with similar markings when running a carb turbo setup on the wrong dizzy on my xr2 turbo technics setup.

 

No, another thing to check tomorrow! If a seat dropped then i'll be making a call to NMS!!!

Cheers!
No it's not Det, the end of the plug was bent up against itself so something has got in there for sure!

 

non of those pics look good karlos,feel for you mate

 

i'd definitely be pulling valves out to check then.
seats can break up, not common, or at least shouldn't be in that head.

 

bad times

 

I wouldnt say the heads written off, Looks repairable to me... But don't quote me.

Ask in GD mate.


Hopefully its not

 

you can have the chambers 3d cnc machined ferriday eng do it .

 

yeah best to take the valves out where the damage is done then get some more pics of the damage if any

 

you not long had that head either feel for you buddy.

 

Valves will be out tomorrow and i'll get some pics up, if it has dropped a seat then hopefully NMS will be decent about it as i've not even had it 6 months probably only done 4K!

If there is enough meat left, there is some really deep gouges!

 

nasty.

 

if they are deep you can weld them up before you get it machined .

 

well that aint good mate sorry to see it be a shame to break but will be intrested in afew bits lol

 

mine was far far worse that that,thats nothin and is an easy repair looks like something has got in there you missing anything when you fitted the efi conversion ive seen this before a few times .Imagine what mine was like when the valve head came off at 7000k ish and battered the fuck out of it and its back on my car today so i wouldnt worry pal
tim

 

What did it cost to repair it Tim?

 

Ouch! check your turbo's intact too

 

jesus pal dunno been done tice as i ripped it apart twice lol wasnt that bad nothin like hundreds urs looks a straight forward job tbh dont worry to much but whats the bore tube like? pics
tim

 

Yeah turbo is fine from what I can see withotu stripping it down!
Oh that doesnt sound so bad!
Bore had very slight pitting around the top 1" IIRC defo no scoring, didnt look to hard as I was taken aback by what I had just found!
Will investigate more tomorrow and get some pics of the head with the valves out and of the bore.

At the very least then i'm looking at a head repair and new valves, replacement piston, bore hone and new rings all round.

 

I take it you've cleaned #4 piston and squish area on the head? as they look a lot cleaner than the rest?

 

No thats exactly how it was when I removed the head.

 

I think its det. I'd love to say its not, but it looks horrendous to me.