Symphony of destruction

[Guest]

Well here we go again. Seems the weld job on the #2 and #3 was a little weak.
The spark plugs had good color and heat range. My guess is that the weld inside the combustion area of the head melted and caused a bit o destruction. I'm visiting the machinest tomorrow.

 

[Guest]

 

[posplayr]

wonderful

 

[TheCafeKid]

WTF dude?? How many times has this thing blown up on you now?? Id start looking for other reasons, maybe some line up issues or something... There is NO WAY I would put up with this. You've got way more patience than I do. If, when I build an 1166 motor, something like THIS happens..I'll be uber peed off..

 

[Nessism]

Bill, you have the patients of Gandhi. God bless you for staying with the GS community after all you have been though with that engine of yours.

What are you going to do? Put it back together yet again? Seems like something is definitely wrong for that engine to melt down again.

Sorry.

 

[Guest]

WTF dude?? How many times has this thing blown up on you now??

Bill, you have the patients of Gandhi. .

Even Gandhi would have prescribed some Valium. Sorry to see that, Chef.... FWIW, even my friend who built a very fast, massaged 1100E had many such problems along the way, before it was reliable enough for longer trips. He always rode it extremely hard though, which didn't help.....eventually sold it and bought a 'busa.

Tony.

 

[rapidray]

Bill, are those what's LEFT of the brand NEW Wisecos I JUST sold you? If so, they look burned up a lot in the same area as the old ones did! Are you SURE where you have the timing? If the timing is too advanced it will do the SAME thing! Is there only one piston that looks like that? If it is 2 & 3 that look like that you are running the timing too advanced! Excessive advance will show up on the hottest running cylinders first. On an 1166 or 1229 motor, it will be 2 & 3. Let me know, Ray.

 

[rapidray]

Bill, please put up a picture that shows all 4 chambers in the head. I need to see a pic of all of them please. Ray.

 

[rapidray]

Also, you have a Dyna S if I remember correctly? It is VERY possible, if you never checked, for 1&4 to be timed correctly & 2&3 to be advanced or retarded from the other 2. Have you ever checked the timing of the 2 pairs independently? Both pick ups need to be set the same & this is in the Dyna S installation instructions. Actually, I believe it is in ALL of Dyna's installation instructions. Ray.

 

[posplayr]

Bill, are those what's LEFT of the brand NEW Wisecos I JUST sold you? If so, they look burned up a lot in the same area as the old ones did! Are you SURE where you have the timing? If the timing is too advanced it will do the SAME thing! Is there only one piston that looks like that? If it is 2 & 3 that look like that you are running the timing too advanced! Excessive advance will show up on the hottest running cylinders first. On an 1166 or 1229 motor, it will be 2 & 3. Let me know, Ray.

Dont worry Ray, I degreed the cams according to my NEW High Performance Formula

Oh well maybe 110/110 aint such good idea for a street bike

 

[67fire]

Ring land, what ring land.
Last time that I saw a piston that looked like that NOS was involved.
That is some serious damage!!!
That engine, WAS HOT!!!

Eric

 

[GavinJuice]

that was detonating like a mofo.

 

[rapidray]

Hence, my question about the DYNA S timing, NOT the cam timing, Jim! Ray.

 

[posplayr]

Also, you have a Dyna S if I remember correctly? It is VERY possible, if you never checked, for 1&4 to be timed correctly & 2&3 to be advanced or retarded from the other 2. Have you ever checked the timing of the 2 pairs independently? Both pick ups need to be set the same & this is in the Dyna S installation instructions. Actually, I believe it is in ALL of Dyna's installation instructions. Ray.

I'm pretty sure he has checked both sides of teh Dyna as we verified TDC while degreeing the cams as well as measuring the crank twist (virtually nill). He will need to cnfirm but we have dicussed this several times.

Bill was running same 147.5's with one notch leaner on the needle. He said it pinged a little; I never felt it but I rode it mostly at high altitude. We did drop down to the lost coast 0 MSL.

I was monitoring my temp and I was not getting any hotter than usual. I'm at 105/107 though.

 

[BassCliff]

Hey Bill,

I think it's time to get you a stock 850G.



Thank you for your indulgence,

BassCliff

 

[Sandy]

WOW!!! And that seemed to be running really strong. I guess the old adage that they run best just before they blow is true. Does remind me of my previous life though "Pi$$ed 'n Broke".

 

[Tom MLC]

Dude!

 

[Kris V]

That is damage from something beating the living sh!t out of piston and head! looks like the weld job that the guy did not adhere to the head and it came off during the ride. Look at the piston, those marks are from impact NOT detonation, they are sharp not melted!

 

[mighty13d]

That is damage from something beating the living sh!t out of piston and head! looks like the weld job that the guy did not adhere to the head and it came off during the ride. Look at the piston, those marks are from impact NOT detonation, they are sharp not melted!

do you think that the excessive heat from detonation caused the weld to fail, causing the whole issue? You can tell that it got REALLY hot too....

 

[49er]

Sorry to see this again Bill.

I'm with Ray on this one, but it may not be your timing. By the look of your 3rd and 4th pics, it appears that most of the heat and destruction is on the inlet side of the chambers. The 3rd one isn't clear enough, but it appears that you have may had a head gasket leak adjacent to the inlet valves. If that is true, the damage will be from detonation through an over lean condition. If you were already running on the lean side, an air leak through the gasket will lean it out even more. The pic showing the top of the bore, shows that the most heat was on the inlet side during the initial meltdown. Did you check the surface across the block at the last re-build? It could be warped.

Did you have the chambers in the head repair welded. If so, the distortion will have bowed the head surface. If your machinist resurfaced the repaired section, your #2 & #3 chambers will have a smaller volume than the outer pots. Your CR on those inner pots could be significantly higher than the outer ones. Did you CC all your chambers after the repair welding was resurfaced?

Cliff may be right, perhaps a nice docile little 850 with stock .............. fitted might be the answer.