i have a problem in my 2.0 ve. im using ngk bkr7e plugs and my #1,2,3 plugs gets smashed every now and then. its so bad that there is no gap causing the car to run really rich and buck,pop,and all sort of weird things.
i recently changed the headgasket to a cometic mls one. do u guys know if its just the wrong plugs? the car will run like a charm if i dont pull the plugs too tight but eventually they come loose. is there some other plugs that dosent go deep as the bkr7e? i remember using the thin headgasket also.

BKR6EIX-11 and I never had a problem

It is odd that its causing spark plug gap to close up though unless you machined the cylinder head a LOT

there was no machining done that i know of. i bought the head from someone who had just pulled it form a fresh ve also. its a 1.6ve head on a 2.0 ve block with 2.0 cams.

Are you missing the screw from the throttle body?

i missing one...but that was the reason for the first head change. i now only have one screw but its lock tighted good.

you have something way wrong if your hitting your spark plugs. Like time to take the head off wrong

I had 12+:1 compression on my 22VE bottome end and it never contacted the pistons.

Could this be causing any problem?

Are you missing the screw from the throttle body?

yeah could get stuck in a valve it will destroy a top end in no time.

Since he stated that he has changed the head and the screw(if only one of them) is locktited in, I doubt a loose screw is the problem.

First of all, it's impossible for the stock 20VE piston to come in contact with the sparkplugs. Something is loose or a foreign object is inside your engine.

I find it odd that you are driving around with only one throttle plate screw attached. That one screw will get stress more from a wot application and will eventually come loose, not to mention you are probrably getting a real high idle, since that one hole is bypassing the throtte plate.

the idle is high sometimes but thats always been like that, even with the 2 screws in place. i dont see what could be loose. i fished all the cylinders with a magnetic pole for foreigh objects but nothing came out. i would also like to add , this engine has been boosted 8psi for the past 200miles.

^^ That info would have been important earlier.

Its detonation closing up the gaps ;)

^^ That info would have been important earlier.

Its detonation closing up the gaps ;)

Exactly, telling us it's a turbo is important. I would also say it's detonation.

isn't it possible that the cam gear skipped a tooth??

so lets say its detonation... i have a calum computer programmed for 370cc injectors and n60 maf. at 3bar. i run 8psi on a t25. should it be detonating that bad? how can i prevent it?

How about some pictures? And use the macro function on your camera so the spark plug tip is in focus.

C

can i install a meth kit to prevent this?

How about some pictures? And use the macro function on your camera so the spark plug tip is in focus.

C

i dont have pics rite now because i usually open the gap and gap it back to 28 and install it again. next time it happens ill take pics and post them up.

isn't it possible that the cam gear skipped a tooth??

Its a damaged spark plug, not a valve ;)

Piston only travels a fixed distance up the bore, it would damage the combustion chamber if hit the plug ;)