Well i dunno how that happen but it did. I didn't even over rev it or anything. That happen at 7grand. Anywayz. No it didnt tap a valve. Anywayz trying to figure out what happen to that and figure out what should i do. Should i got get a new set of CTR or p30.. This was in a GSR motor ran with Skunk2 stage 2....

 

Pics of the cylinder head?

 

From my angle that looks melted. Did you run nitrous or something.

 

No spray in my car....it was just all N/A...How would piston melt if i wasn't even boostin or anything like that?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aznstyler119 &raquo;</TD></TR><TR><TD CLASS="quote">
No spray in my car....it was just all N/A...How would piston melt if i wasn't even boostin or anything like that?</TD></TR></TABLE>

Bad tuning, if you go too lean your egts will raise to the point that the piston can melt

 

Sorry but what does egts stands for?..It was tuned with hondata...so i would say it was tuned pretty well. The place i went to is a well knew good tuner place.

 

EGT is exhaust gas temperature, did you maybe put some 87 octane in by accident? how long has your motor been set up like this? how long ago did you have it tuned? you should take a picture of the plug from the cylinder that has the hole in the piston so we can see. Also post up your graph from your dyno session so we can see your a/f graph.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by luisma &raquo;</TD></TR><TR><TD CLASS="quote">Bad tuning, if you go too lean your egts will raise to the point that the piston can melt</TD></TR></TABLE>

Your valves will also show signs of leaning out. i see none on his.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aznstyler119 &raquo;</TD></TR><TR><TD CLASS="quote">Sorry but what does egts stands for?..It was tuned with hondata...so i would say it was tuned pretty well. The place i went to is a well knew good tuner place.</TD></TR></TABLE>

EGT=Exhaust gas temp.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PreStaged12s &raquo;</TD></TR><TR><TD CLASS="quote">EGT is exhaust gas temperature, did you maybe put some 87 octane in by accident? how long has your motor been set up like this? how long ago did you have it tuned? you should take a picture of the plug from the cylinder that has the hole in the piston so we can see. Also post up your graph from your dyno session so we can see your a/f graph.</TD></TR></TABLE>

The plugs are actually in one of those pictures...i never took it out..But i never put in 87 in my tank b4 and it's been tuned for about 1yr. Sorry i dont have the graph but i definately wont blame it on the tuner. He did what he was suppose to do infact help me correct a couple of things that my first tuner didn't do. I'm just sad/mad that that happen w/ no reason to it.

 

I see your from Oakland, where did you go tune if you dont mind my asking? Sorry for your luck, did you go to 7th St a lot?

 

Yah bak then...I haven't went for a long time. Tuner will remine unknown...

 

well that certainly sucks, i feel your pain. i've threw a rod outta sleeve motor driving normally.. good luck.

 

How did you throw a rod with a SLEEVE motor...i thought that's what sleeving protects you from?

 

Truth.

?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aznstyler119 &raquo;</TD></TR><TR><TD CLASS="quote">How did you throw a rod with a SLEEVE motor...i thought that's what sleeving protects you from?</TD></TR></TABLE>

Its still possible, i know of a motor that was built and the pauter rod when shooting through the new sleeve..... Turbo Ls/vtec motor...

In your first pic is that a hole in the piston?

 

oem piston lol nothings garanteed on them bitches.

 

Sleeves, oem or aftermarket have NOTHING to do with "throwing a rod" or the op's problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Runnerdown &raquo;</TD></TR><TR><TD CLASS="quote">Sleeves, oem or aftermarket have NOTHING to do with "throwing a rod" or the op's problem.</TD></TR></TABLE>

Exactly what I was about to see. Sleeves have a NOTHING to do with a throwing a rod.

 

Classic detonation pproblem. Too low an octane for the compression ratio and timing lead. Possible oil contamination lowering the fuel octane rating
For how many days did you hear the "pinging" or "knocking" sound before it broke?

 

bad tune your tuner should have watch the egts you wouldnt be in this place
it got to hot and melted a hole use p30's next time good luck on your next build

 

NATE! aznstyler119 is Kevin DB8....aka.. CATFISH!! this is hai btw =D

 

You're lucky, my friend melted my $750 Endyn pistons that were ceramic coated. He went crazy on advancing the timing and leaned out the AF ratio. So far I'm into the rebuild 2k and got another 1.5k to spend.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmhatchness &raquo;</TD></TR><TR><TD CLASS="quote">bad tune your tuner should have watch the egts you wouldnt be in this place
it got to hot and melted a hole use p30's next time good luck on your next build </TD></TR></TABLE>

For some reason I have a feeling you have no idea what the f*ck you are talking about.....

 

Interested in buying my B20?

PM me.

 

if i had the money..i would go 2L...but i dont..so imma go bak to gsr