More crazy pics...

This used to be a piston... awhile ago!

Crank survived amazingly well. Just have to get that con rod off... somehow!

Just before the run .

After the run .

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

But hey, those 3 seconds were FUN!!! It pushed really hard...

-jyrki from Finland-

www.hollowheads.net

...


Hyvinkää, FI

Gotta say The Rapture looks BAD just sitting in your pit area. Did any of the "fifty year old parts " pass thru your turbos? And do any damage in there?

"The Master Cylinder"

Enjoying life at the beach in SOCAL

I spent the whole morning in the garage and just got the autopsy done. Just what we thought and seems that the crank survived with external scratches. Camshaft atleast in four pieces and bent pushrods all over the engine .

But hey, that's racing! Don't try this with over fifty years old parts .

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

Guys.  That’s a big ouch.  Those pistons being fifty years old sure didn’t help.  The new engine will undoubtedly alleviate some of those breakage issues.  Thanks for the pics though.

Lorena, Texas (South of Waco)

I think that was just a symptom of old cast piston and a big volume of air mass coming into engine. i don't think detonation as an issue as both head gaskets were ok this time and on that left bank there was a Fel-Pro blue gasket which I installed there back in 2007. But, anyway that was totally a shot in the dark as we didn't go to dyno with that old bottom end. With the new engine we will definetely do that before going to the track. It's a bit hard to figure out those wastegate settings etc. without dynoing the engine.

And, when Simo gets all the data out of a laptop, we will know more. Anyhow, that 0.52 bar pressure was present at only 4200 rpm at the end of the track. The start was at about 1500 rpm and it really didn't pick up well. Time was someting around 13.3 and we didn't even bother to pick up the time slip. Well, it would be nice to know what happened between half of the track and the end because jyrki said it started to pull quite hard at that point...

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

Re broken piston etc. Is pressure the problem? Or as you noted the fuel setup isn't right, & what about timing? So, could it be detonation?..

Paul

Well.... eehh... It died today

Only one run and then one original 1962 cast piston from cylinder #5 broke and then the number #5 connecting rod broke and it broke the camshaft and that allowed four lifters to fall down from cylinders 1 and 5 and also four push rods fell down to oil pan! So, not exactly what we were after at, but it really pushes hard at the end. At the start all the fuel maps are not correct yet, but the feeling is that those turbos really hit hard when the time comes. And defenitely too hard to stock parts . No worries, we'll be back on track with the new bottom end and we hope we didn't broke that forged crankshaft. The block may well be dead also, but that is another story and we'll find out that later...

And data tells us that we had only 0.52 bar of boost at that run.  

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

Quite succesfull session... Not only Fuel Pump code in Megasquirt messed up. Now is Fuel pump relay driver transistor and Fuel Pump Relay also broken.



Too bad that mechanical fuel pump don't work with electronic injection...I think, I cannot break that.





Hyvinkää, FI