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Old 01-08-2007, 10:49 AM   #1
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More pics of my 347 blow up!







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Old 01-08-2007, 11:15 AM   #2
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Re: More pics of my 347 blow up!

i might have missed the story but dude what did you do?
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Old 01-08-2007, 12:05 PM   #3
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Re: More pics of my 347 blow up!

That sucks.
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Old 01-08-2007, 12:19 PM   #4
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Re: More pics of my 347 blow up!

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Originally Posted by all8280bcc View Post
i might have missed the story but dude what did you do?
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Old 01-08-2007, 02:35 PM   #5
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Re: More pics of my 347 blow up!

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i might have missed the story but dude what did you do?
x3
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Old 01-08-2007, 05:42 PM   #6
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Re: More pics of my 347 blow up!

Ouch... That hurts just to look at.
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Old 01-09-2007, 01:18 PM   #7
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Re: More pics of my 347 blow up!

dude wtf!!!....ok, so tell us at wut rpm did the crank snap?!?!
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Old 01-09-2007, 01:37 PM   #8
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Re: More pics of my 347 blow up!

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i might have missed the story but dude what did you do?
X4
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Old 01-09-2007, 02:52 PM   #9
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Re: More pics of my 347 blow up!

good lord
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Old 01-09-2007, 05:43 PM   #10
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Re: More pics of my 347 blow up!

I'm ganna say some valve floatage(haha floatage, new word) at a high rpm and the piston came up and hit it and all hell broke loose.
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Old 01-09-2007, 06:20 PM   #11
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Re: More pics of my 347 blow up!

Quote:
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i might have missed the story but dude what did you do?
x5
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Old 01-09-2007, 10:43 PM   #12
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Re: More pics of my 347 blow up!

2:

damn...
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Old 01-10-2007, 09:48 AM   #13
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Re: More pics of my 347 blow up!

Their Ain't Enough Valve Floatage In The World For Dat Shyt Bullit....i Think The Crank Snapped Or The A Rod Bearing Gave Way
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Old 01-10-2007, 10:33 AM   #14
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Re: More pics of my 347 blow up!

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i might have missed the story but dude what did you do?
X 6 and counting if you don't tell your story soon.
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Old 01-10-2007, 10:52 AM   #15
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Re: More pics of my 347 blow up!

you might could JB weld the piston back together perhaps add a bit of shreadded cardboard to strengthen it up, should be fine.
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Old 01-10-2007, 11:19 AM   #16
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Re: More pics of my 347 blow up!

Dont Forget The Gorilla Glue For The Rod Bolts Spector
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Old 01-10-2007, 04:06 PM   #17
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Re: More pics of my 347 blow up!

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Their Ain't Enough Valve Floatage In The World For Dat Shyt Bullit....i Think The Crank Snapped Or The A Rod Bearing Gave Way
Actually, if you read his story in another thread, that's pretty much what happened. Atleast that's what it sounds like to me.

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LOL, yeah I guess thats what happens when valves meet pistons! It tore out the whole cyclinder wall, snapped off both valves, crushed the piston, bent the rod, and chewed up that part of the cyclinder head up. I had pieces of the block and piston in my upper intake!
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Old 01-10-2007, 06:46 PM   #18
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Re: More pics of my 347 blow up!

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Their Ain't Enough Valve Floatage In The World For Dat Shyt Bullit....i Think The Crank Snapped Or The A Rod Bearing Gave Way
Umm NO, the crank was just fine, plus all the other pistons had exhaust valve grooves in the pistons, so **** was hitting
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Old 01-10-2007, 06:56 PM   #19
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Re: More pics of my 347 blow up!

Ok, heres the whole story, I had my mechanic build me up a 347 stroker with CHP street fighter kit, with about 10:4:1 comp, this thing moved well and was backed up witha PA C4, coan 3000 stall. Anyhow, I brought it up for a tune, and I was told I should get a custom grind cam to maximize performance alright cool! At this time the motor had roughly 8,000 miles on it, which of course where hard miles. So I got a custom grind, and CHP said my pistons can handle .640 lift and no more, the most I had was .580 lift. Well my mechanic was really busy in the shop, and I didnt have all the tools but my friend did, (he built his own 289 motor) he said why wait we can do it.......I was hesitate but I really wanted this new cam put in. So it was installed, brought it back up for a re-tune the rwhp ratings didnt change but this thing felt totally different, and very mean, best times in the 1/8 where 7.3's @94.88mph witha 1.59 60ft launching at idle! Motor had a few hundred miles on it with new cam, before she gave way at the track, it didnt even make a huge mess just a bunch of smoke. My friend claims piston/valve clearance was fine, but his way of checking was turning motor over by hand and looking through the spark plug hole, everything else on the bottom end held together, and this was cycl number 4 tore out the whole cycl wall
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Old 01-10-2007, 08:59 PM   #20
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Re: More pics of my 347 blow up!

That is precisely why you measure piston to valve clearance every time, regardless of what anyone says.
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Old 01-10-2007, 09:06 PM   #21
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Re: More pics of my 347 blow up!

Ouch that blows man
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Old 01-11-2007, 03:46 PM   #22
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Re: More pics of my 347 blow up!

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That is precisely why you measure piston to valve clearance every time, regardless of what anyone says.
Yes looking through the spark plug hole def will not work we use clay on top of the piston and bolt the head on and turn it over and pull the head back off and caliper the depth left on the clay and add for heat expansion od the valves and piston
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Old 01-11-2007, 04:55 PM   #23
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Re: More pics of my 347 blow up!

/\ x2
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Old 01-12-2007, 01:49 PM   #24
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Re: More pics of my 347 blow up!

yeah, I have a well known engine builder helping me on my next project
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Old 01-12-2007, 06:54 PM   #25
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Re: More pics of my 347 blow up!

damn stroked...dat's f&%% up yo....and i was cryn cause i gotta buy new pistons...(my pistons got intimate w/ the valves too @116mph) i feel so selfish now. i must have those new diamond coated valves cause they chewed new reliefs in the pistons.....get this, i water checked the valves and they all seal...freak'n weird huh?....any dude im so sorry..i feel or u.
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Old 01-12-2007, 07:13 PM   #26
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Re: More pics of my 347 blow up!

well I'm moving on to bigger and better things hopefully, 408w stroker!
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Old 01-27-2007, 09:17 PM   #27
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Re: More pics of my 347 blow up!

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i might have missed the story but dude what did you do?
x7
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Old 01-27-2007, 10:00 PM   #28
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Re: More pics of my 347 blow up!

For like the third time, pretty much the valve hit this piston and all hell broke loose.
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Old 01-28-2007, 03:06 AM   #29
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Re: More pics of my 347 blow up!

hmmm... looks like you invented a new look for the motor, me likey!!
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