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Re: Ported Dart pro 1 pre platinum

Posted: Fri Oct 06, 2017 1:44 pm
by cgarb
Well, it was the Lunati rod's fault. That's what broke...lol.

Re: Ported Dart pro 1 pre platinum

Posted: Fri Oct 06, 2017 2:21 pm
by Carnut1
I actually think the Wisco piston pin boss pulled out.

Re: Ported Dart pro 1 pre platinum

Posted: Fri Oct 06, 2017 2:29 pm
by MadBill
2X pin boss, pending close-up pix.

Re: Ported Dart pro 1 pre platinum

Posted: Fri Oct 06, 2017 4:34 pm
by Carnut1
IMG_1937_3.jpg
The best I have. A blow up of original pic.

Re: Ported Dart pro 1 pre platinum

Posted: Fri Oct 06, 2017 4:44 pm
by BILL-C
Do i see burned up pieces of spun rod bearing in pic?

Re: Ported Dart pro 1 pre platinum

Posted: Fri Oct 06, 2017 5:00 pm
by Carnut1
I see some blue on the rod, I didn't disassemble post mortum.

Re: Ported Dart pro 1 pre platinum

Posted: Fri Oct 06, 2017 5:20 pm
by cgarb
Piston would have been fine if the spiroloc didn't come out the side...lol. These destruction posts are educational and entertaining at times.

Re: Ported Dart pro 1 pre platinum

Posted: Fri Oct 06, 2017 5:56 pm
by BILL-C
Usually a rod bearing gets burned up for whatever the reason and a rod bolt breaks. Then the rest of the rod and piston fall into the blender.

Re: Ported Dart pro 1 pre platinum

Posted: Fri Oct 06, 2017 9:52 pm
by Scotty
To me it looks like the rod tunnel is blue. So my question is if the pin boss failed first how does this then translate to the rod bearing failure?

Re: Ported Dart pro 1 pre platinum

Posted: Fri Oct 06, 2017 11:02 pm
by GARY C
I am still trying to figure out how broken parts = good head work?

Re: Ported Dart pro 1 pre platinum

Posted: Sat Oct 07, 2017 7:52 am
by user-612937456
GARY C wrote:
Fri Oct 06, 2017 11:02 pm
I am still trying to figure out how broken parts = good head work?
Good head work on someone else plaything, blue rod B's, stroked piston, all torn up, having a good time till got hurt? Sounds familiar? Hmmm..... Dont try to "figure out how" If you play the game long enough someone is bound to get hurt

Re: Ported Dart pro 1 pre platinum

Posted: Sat Oct 07, 2017 7:58 am
by joe 90
I've got one that looks just the same.

Too tight in the bore , got stuck, broke the rod.





OK so what was the question again?


A shitty build?

Re: Ported Dart pro 1 pre platinum

Posted: Sat Oct 07, 2017 8:10 am
by Carnut1
Builder is pretty good. Not his first rodeo but getting better. Tune may have been a contributing factor. I speced the timing and he claimed it ran better with more. The compression and quench were both far from optimum. Which is most likely the reason it needed more timing. I also gave rpm shortblock limit which was ummm not followed to the letter. Not bashing by any means but a tough learning curve for him. Thanks, Charlie

Re: Ported Dart pro 1 pre platinum

Posted: Sat Oct 07, 2017 8:11 am
by GARY C
gvx wrote:
Sat Oct 07, 2017 7:52 am
GARY C wrote:
Fri Oct 06, 2017 11:02 pm
I am still trying to figure out how broken parts = good head work?
Good head work on someone else plaything, blue rod B's, stroked piston, all torn up, having a good time till got hurt? Sounds familiar? Hmmm..... Dont try to "figure out how" If you play the game long enough someone is bound to get hurt
Just trying to figure out the quote under his pic on last page,"Recent R&D ( Race em and Destroy em) from a set of my heads. Way before flowbench. N.A. street stuff. Working on it M.T. Thanks, Charlie"
I always ran small cube nitrous engines from 700 to 900 horse, 7000 to 8000 rpm I just never broke anything, so is that because I didn't port my heads correctly?

Re: Ported Dart pro 1 pre platinum

Posted: Sat Oct 07, 2017 8:20 am
by user-612937456
GARY C wrote:
Sat Oct 07, 2017 8:11 am
Just trying to figure out the quote under his pic on last page,"Recent R&D ( Race em and Destroy em) from a set of my heads. Way before flowbench. N.A. street stuff. Working on it M.T. Thanks, Charlie"
I always ran small cube nitrous engines from 700 to 900 horse, 7000 to 8000 rpm I just never broke anything, so is that because I didn't port my heads correctly?
Sorry Gary you didn't get it. That wasn't intended as being critical of you. This post was going a little sideways so I thought I would give my contribution, my comment was just a little sexual innuendo LOL