Broken engine pictures

looking at the pics of the crowns of the piston i would say the car has had chronic det issues as they are quite badly pitted (hope i'me not stating the obvious here), this does not happened overnight or in one mapping session, when i had my head off a while back i actually polished up the crowns to check for evidence of det and they came up perfectly smooth, i used to tune 2 strokes many moons ago so know what a det cratered piston looks like

looking at the pics of the crowns of the piston i would say the car has had chronic det issues as they are quite badly pitted (hope i'me not stating the obvious here), this does not happened overnight or in one mapping session, when i had my head off a while back i actually polished up the crowns to check for evidence of det and they came up perfectly smooth, i used to tune 2 strokes many moons ago so know what a det cratered piston looks like

The head was off not but a few weeks before to have new valve seals and a good clean up including a re shim, the pistons were in fantastic condition

this does not happened overnight or in one mapping session

Dan, for some unknown reason feels that he should map upto .25bar over what's requested to make sure that if you ever have a boost spike it's covered.

 

This is not in my, or anyone elses, opinion what's recommended and I'm quite frankly appaulled.

 

He should have;

Set a FuelCut/Boost Cut at 1.6bar.

Mapped to 1.5bar

Extrapolated out a rich point to cover between 1.5-1.6bar.

 

He should have not mapped beyond 1.5bar at any stage especially on a hot dyno!

 

Dean, looks like he owes you money IMO. 1 new stock bottom end.

Alex, you sitting down right??

I agree *grin*

I disagree. Damage like that could occur in seconds under the right (wrong) conditions.

Yeah, high rev, high det... all you need is one small fragment at 6000 RPM and it gets VERY VERY VERY messy..

I disagree. Damage like that could occur in seconds under the right (wrong) conditions.

Fully agree Jake.

The heat created by det could cause this in one dyno pull. Most of the crator damage to the head is from the piston/ring as it disintegrates.

This was as I said a quote from the mapper not me

 

I would like to know what happened to

Sorry should have read things more throughly:)

Fully agree Jake.

So is it 'just something that happens' as the mapper says and also says it 'happened in an instant' or is it something that could and should have been avoided considering the circumstances, that is the big question for me ?

Could it just happen, yes... should it happen, not likely..

The fact that the engine was pushed to 1.75bar on 97 fuel is not acceptable especially as you the customer did not ask for a 1.75bar map.

i feel for you mate

Do you have any high res pics of the other pistons? (preferably acetone cleaned) Especially exhaust side.

Could well be the result of a sick injector if the others look good.(not that this excuses 1.75bar on 97 ron)

Do you have any high res pics of the other pistons? (preferably acetone cleaned) Especially exhaust side.

Could well be the result of a sick injector if the others look good.(not that this excuses 1.75bar on 97 ron)

No compression on 1,2 and 3, big damage on 2 and scoring on 1 and 3, with the 200kb limit I am having to use low res photo's, I have the car with me so I can take any pics you like need

Upload them to Putfile mate, then just paste a link here

are you going to rebuild the engine up?

No compression on 1,2 and 3, big damage on 2 and scoring on 1 and 3, with the 200kb limit I am having to use low res photo's, I have the car with me so I can take any pics you like need

Hmm, not a single injector issue then.

Send them over to me and I'll host them for you..

The head was off not but a few weeks before to have new valve seals and a good clean up including a re shim, the pistons were in fantastic condition

fair enough if you saw the pistons, but the tarnishing looks to me like old det that has had a coat of tarnish over the top, from my 2 stroke days (which pink like a b*****d) you would not see that much damage on just one run, i know a 2 stroke is a different animal but all the physics of det is exactly the same, was the tuner wearing det cans if yes he would of stopped/backed off long before the level of damage you can see in the pics

....1.75 bar, standard internals, normal fuel.... mentalist.

 

....1.75 bar, standard internals, normal fuel.... mentalist.

 

....1.75 bar, standard internals, normal fuel.... mentalist.

have to agree, if it was momentary blip up to 1.75 a healthy motor should be ok, but if it was sustained then yes......mentalist

 

....1.75 bar, standard internals, normal fuel.... mentalist.

Quality find Michael.

 

....1.75 bar, standard internals, normal fuel.... mentalist.

Subtle dude, subtle *snigger*

was Dan listening to his Ipod instead of his det cans during those runs?

My personal belief (and having talking this through with some other techies) is that Dan is responsible for that damage. Dans no doubt going to throw a fit about this but I dont care as Im fed up with these things being hushed up on the forum and others going the same way.

Unless Dan can give a full technical explanation why its not his fault and why he isnt paying some or all of the repair bills then Im going to have to reconsider the trader membership he is operating under.

I cannot accept a member having their engine blown and the mapper taking no responsibility.

that should make things interesting.

JB

 

....1.75 bar, standard internals, normal fuel.... mentalist.

Must have had his detcans on then.