Dropped Valve = Carnage! (All engine apart with pics)

Sam - if you need any help or space when you get back give me a shout as the garage will be free for at least two months, or even if you want the engine stripped down ready for your return, let me know.

Still feel gutted.....

 

Don't worry, you'll be helping me put my 1.9L 8v turbo back together when i sort some new rods out, and then theres the Sambo-spec tubular manifold to make

 

Ouch - sorry to see that, Sam! I guess it's an occupational hazard of running massive power though.

 

so sorry to see this Sam, trerible thing to happen

reasons for it happening could of been a valve lift? what valve spring were you running?

could you fit the old 3 pistons, and replacment new to the new block

 

single groove valves or tripple?
std springs or supertech (with retainers)?

I have soem spare *used* parts here from mine. I retired my valvetrain and life them anyhows.. so may have some kickign about if I can find them.. (safe place alert!)

 

Unlucky mate, least you kicked its head in for a good few years before it went pop!!

Be good to see it back even better!!

 

Well first time on forum in 3 weeks, chillin back home in Sarajevo

Thanks for kind words/support/advice lads, once i get back engine will get built

Dan, may need use of gge i will let you know, cheers bud

Bill, i will get in touch when back regarding spare bits, need to strip the head and find out what parts i need thanks alot

Cheers

 

Dont forget i have a head here for you if you want it,nice and cheap for you sambo.

 

Right, back in UK now so decided to get on with repairing my engine

Took my cams out to reveal all valves collets in place and nothing broken!

So what caused my valve to brake and drop into chamber?

I'v yet to take block apart, just wondering if piston has m,ade bid for freedom and struck valves as all others are bent to?

Few pics

 

PM me price again please Steve

 

any contact dents on piston crowns?

 

Have the timing belt pulleys possibly sheared their woodruff keys? More often the cam pulley but the crank one can move to.
Often happens when valve to piston contact occurs, resulting in the valve timing altering to the point other valves get bent.

 

Fairly battered Bill, did not pay close attention of particular scars but here is few pics i took back when first removed head







I will be taking bottom end apart soon so i should have more of an idea what happened i guess

My feeling is that piston hit valves resulting in one braking half way down the stem and dropping in

Dan, if timing moved wont that affect all valves and cylinders?

All others are still perfect

 

Ahh, ok, I picked up what you said in the other post wrongly.

I thought that implied other cylinders had their valves bent too.

 

Nah, just bad wording on my behalf, i ment all others on cyl1

 

thats not pretty looking at the valves it does look like the piston has decided it wanted to leave the building elvis styleeee

is the head not fiaxable with a little welding ?

 

I deffo will not be attempting to fix the head, much rather start fresh

Shame as porting job was very nice indeed

If you want it you can have it bud

 

Today i'v taken bottom end apart

No apparent damage to crank or rods so these will be reused when rebuild comences

Am thinking of getting full set of new INtegrated Engineering custom 83mm JE stroker pistons and a Ferrea full valvetrain set inclusive of superiour quality valves and titanium retainers alongside of uprated springs, not cheap at $1000 for pistons and $1400.00 for valvetrain plus shipping and tax but i cant risk another engine failure due to a single broken valve!

Few pics

Removed sump to reveal internalls in very clean condition, oil pickup pipe had bits of piston in it






Damaged piston no1 on the left, others nearly unmarked, Pauter rods perfect







Eurospec crank nearly mint to, will have it checked tho and polished for good measure







Bits of piston crown in the sump







Once i get all new parts i will post pics of rebuild for you good people and will ask for advise prior to assembly to make sure all is perfect


Not sure wether to order other goodies such as Fluid dampner crank pulley, Timing Belt Gear Dowel Pin Kit, ARP 625+ rod bolts instead of ARP2000 which i have at the moment etc to complete perfect package and make it literally bullet proof

Also not sure if i should have crank pickup wheel spot welded to the crank to ensure it stays attached

Any advice welcome

 

Arnt valve heads dropping off on 20v's fairly common? ...you seen this Bill?

That's a lot for pistons Sam. .I reckon they can be done cheaper bud...

Don't compromise on the valvetrain.