DP #24 Engine failure....

Hang in there,

Good Luck

[Rich Biebel]

If you ran the engine to 8000 on the dyno.......I would have to ask if the HP and TQ was still near peak or at peak........Those numbers would indicate if the valvetrain was still stable or going into valve float. What kind of lifters do these engines use? I am sure they are rollers but are they solid rollers or hydrualic rollers? Was the engine looked over carefully after the dyno session? A valvetrain exam and an oil filter cut open and checked? Just some questions here nothing else.

I have seen engines run on a dyno that had an issue during testing and that engine failed soon after it was raced......Not saying that's what happened here but it's just a thought......

How heavy are the pistons and pins in one of these engines? I don't have a real warm and fuzzy feeling about spinning an engine to 8000+ with import I beam rods in it......I would at the very least replace the bolts with the best I could find.......

[Chris "drooze" Wertman]

--QUOTE=Rich Biebel;179865--If you ran the engine to 8000 on the dyno.......I would have to ask if the HP and TQ was still near peak or at peak........Those numbers would indicate if the valvetrain was still stable or going into valve float. What kind of lifters do these engines use? I am sure they are rollers but are they solid rollers or hydrualic rollers? Was the engine looked over carefully after the dyno session? A valvetrain exam and an oil filter cut open and checked? Just some questions here nothing else.

Nope still climbing and I didnt like spinning it that fast, so I was the one and the reason that said no more over 72, we can predict fuel and timing from there.

Yes motor was checked after Dyno, all looked good, heads off, no smacks, so it wasnt "earlier" all looked good, even filter was clear of anything but expected break in debris and even that was very light.

They are hydraulic rollers, and are good to at least 8500.....ask Irv and Duell, Jerry, etc........they are amazing to me for a stock piece.

Good salient questions all of them, these are the answers....lol

I have seen engines run on a dyno that had an issue during testing and that engine failed soon after it was raced......Not saying that's what happened here but it's just a thought......

Its a very good point

How heavy are the pistons and pins in one of these engines? I don't have a real warm and fuzzy feeling about spinning an engine to 8000+ with import I beam rods in it......I would at the very least replace the bolts with the best I could find.....

Piston with pin around.620...yeah boat anchors....and the rods 600-620.... and yeah Import beams scare the psheszzz outta me too but right now its the only approved rod, I called a couple of people for this motor and noone could get me anything approved, Eagle was about useless and had no care. K1 is trying but falling into NHRA issues that arent issues that now are...who knows...they are trying. for an H beam anyway.

Well waiting on a couple extra sets of hands here to get somethings done.

I just heard that there is another bolt for these rods. Better, gonna track that down FAST....like real fast.....

AND I will say today the bearings look worse in the light....daylight, so maybe , quite possibly oil starvation was in fact the culprit. The mains have some bluing at the parting lines and some galling . Trying to build another one as well as trying to diagnose is too difficult at the same time. With what I know for sure, what I think I know, some things I didnt want in the other engine but were there, and the clearances being in my opinion and others here including your own too tight.....well.....

For today and tommorow Im going to go strictly back to building what i think should be built.....if it comes apart then its 100% my failure, if it dosent then its my success.....

For certain things like rods, bolts, etc....unfortunatley I have no legal options.....so Im stuck.

All the Pics are here btw, I will leave you with a few "fun" ones.

http://www.flickr.com/photos/newhemi...7623768319716/