It dun broked......

DolSVT00 · 04-15-2012, 02:39 PM

529249_399622910055661_100000238668242_1545863_1929452268_n.jpg

Luckily the short block looks great.

1iron · 04-15-2012, 03:37 PM

Quote:

Originally Posted by DolSVT00

Attachment 1058

Luckily the short block looks great.

JB Weld and done. Easy fix!

Foose04 · 04-15-2012, 03:42 PM

Sorry you had to tear into but I'd feel pretty good knowing the bottom end is sound. Good luck getting it back up and rocking again.

DolSVT00 · 04-15-2012, 07:48 PM

Quote:

Originally Posted by Foose04

Sorry you had to tear into but I'd feel pretty good knowing the bottom end is sound. Good luck getting it back up and rocking again.

Thanks, I dropped a spare set of heads I had off to CNC last week because I pretty much knew it was the heads after all the problem's Ive had with them. I have 4 extra's here now I'm down to 2 lol.

I'd have it back in the truck running again by now already if I would have had them done a year ago when I got them for that reason, but they kept running so I left them there.

bambooi · 04-15-2012, 03:53 PM

Any thoughts on the cause?

DolSVT00 · 04-15-2012, 04:54 PM

Quote:

Originally Posted by bambooi

Any thoughts on the cause?

Problem I've been chasing for years.

On the first build it was my DD so I use my old set of heads that were on my stock engine I blew up on the track, they were Windsor PI heads with 4 threads in the spark plug hole with around 100 plug changes and 80,000 miles. I had them ported, put some good be-hive springs valves and retainers in them and stuck them on.
Eventually over time one by one I stripped or shot the threads out of the plug boss and had to put some inserts in. Inserts reduce the thickness of the boss and even if there aluminum inserts (which I had) as the plug gets hot from racing or making high speed runs (what I was doing when this happened) the heat eventually melted it, once it melted and exposed the threads of the spark plug it was like a torch cutting away at the boss and the valve and eventually messed up the seat and blew out the valve seal letting oil into the CC. (what made me pull it was smoke)

Ct.TOPGUN · 04-15-2012, 06:59 PM

You going PI again? Or TF heads that solve this issue?

DolSVT00 · 04-15-2012, 07:11 PM

Quote:

Originally Posted by Ct.TOPGUN

You going PI again? Or TF heads that solve this issue?

I wouldn't put a set of trick-flow 2v on my lawnmower. Romeo's solve it good enough for me.

Ct.TOPGUN · 04-15-2012, 07:27 PM

Got Romeo's on mine. But you guys seem to like to play with marginal fuel octane. that scares me. I octane way up after my last failure lifting a head.

Jim

Harry · 04-15-2012, 08:26 PM

Quote:

Originally Posted by DolSVT00

Problem I've been chasing for years.

On the first build it was my DD so I use my old set of heads that were on my stock engine I blew up on the track, they were Windsor PI heads with 4 threads in the spark plug hole with around 100 plug changes and 80,000 miles. I had them ported, put some good be-hive springs valves and retainers in them and stuck them on.
Eventually over time one by one I stripped or shot the threads out of the plug boss and had to put some inserts in. Inserts reduce the thickness of the boss and even if there aluminum inserts (which I had) as the plug gets hot from racing or making high speed runs (what I was doing when this happened) the heat eventually melted it, once it melted and exposed the threads of the spark plug it was like a torch cutting away at the boss and the valve and eventually messed up the seat and blew out the valve seal letting oil into the CC. (what made me pull it was smoke)

I'd blame it on the tuner.

DolSVT00 · 04-15-2012, 08:42 PM

Quote:

Originally Posted by Harry

I'd blame it on the tuner.

Him and the builder, and the mechanic that put the insert in...... I believe that one was about 1/16 deeper then the others causing the plug to be lower and expose sharp edges in the CC.

Sean · 04-15-2012, 08:20 PM

Isnt this a new motor?

DolSVT00 · 04-15-2012, 08:28 PM

Quote:

Originally Posted by Sean

Isnt this a new motor?

Was built back in 08-09, has about 40 nitrous bottles through it and about 50-60 track passes and multiple 300 mile trips to florida with a boat in tow, so no......

Funny thing is, the ring gaps are +.02 larger than what I set them when I put it together the first time, but still well within what most would call wore out. and the bearings look new and still have the coating on them.

I'll probably freshen it up and sell it to go aluminum, or just cross hatch it re-ring, put another set of bearings in it and it put it back in. There's nothing wrong with it, but when rings are only 70$ and bearings are even less, I might aswell.

chrisheltra · 04-15-2012, 08:32 PM

Please dont reuse that motor. I want to see you go fast.

DolSVT00 · 04-15-2012, 08:37 PM

Quote:

Originally Posted by chrisheltra

Please dont reuse that motor. I want to see you go fast.

Its the same short block as yours....... I would like a lighter one though.. we'll see.

chrisheltra · 04-15-2012, 08:38 PM

Quote:

Originally Posted by DolSVT00

I would like a lighter one though...

Thats what Im getting at.

spdracr0 · 04-15-2012, 08:44 PM

Heads are where it is at..

jmd · 04-16-2012, 02:23 PM

srry it be buss up. glad the sb is good.

DSGGEN2 · 04-17-2012, 09:02 AM

U crazy sumbitch! Time to turn it up.

oldskoolstang · 04-20-2012, 03:14 AM

Damn, I just scrapped a perfectly good pair of PI heads......I forget people use that 2v crap. No offense, I just hate 'em.

04-15-2012, 02:39 PM	#1
DolSVT00 Moderator Join Date: Jan 2007 Location: Goose Creek Posts: 3,913	It dun broked...... 529249_399622910055661_100000238668242_1545863_1929452268_n.jpg Luckily the short block looks great. __________________

04-15-2012, 03:42 PM	#3
Foose04 Senior Member Join Date: Feb 2010 Posts: 965	Sorry you had to tear into but I'd feel pretty good knowing the bottom end is sound. Good luck getting it back up and rocking again. __________________ 12 GMC Denali HD: 4x4, 12" Bullet Proof, 24x12 American Forces, 40x15.50 Toyo M/T's, h&s mini max, deleted, 5" axle dump, S&B intake,tractions bars, air bags. 04 GMC 1500RST: TMS Iron 347/S480/4l80E - 9.63@143.22 05 GMC 2500HD: LLY@372HP/669TQ, 4x4, 8" FabTech, 4.56 gears & 37" Toyo M/T's

04-15-2012, 08:20 PM	#12
Sean Senior Member Join Date: Jul 2010 Location: Wilmington, NC Posts: 918	Isnt this a new motor? __________________

04-15-2012, 08:32 PM	#14
chrisheltra Neo is Jesus Join Date: Jan 2007 Posts: 13,265	Please dont reuse that motor. I want to see you go fast. __________________ Gap A Hoe Racing

04-16-2012, 02:23 PM	#18
jmd Senior Member Join Date: May 2008 Posts: 3,177	srry it be buss up. glad the sb is good. __________________ Cadillac man

04-15-2012, 03:53 PM	#5
bambooi Senior Member Join Date: Apr 2009 Posts: 1,324	Any thoughts on the cause?

04-15-2012, 06:59 PM	#7
Ct.TOPGUN Senior Member Join Date: Jan 2011 Posts: 143	You going PI again? Or TF heads that solve this issue?

04-15-2012, 07:27 PM	#9
Ct.TOPGUN Senior Member Join Date: Jan 2011 Posts: 143	Got Romeo's on mine. But you guys seem to like to play with marginal fuel octane. that scares me. I octane way up after my last failure lifting a head. Jim

04-15-2012, 08:44 PM	#17
spdracr0 Senior Member Join Date: Apr 2011 Posts: 568	Heads are where it is at..

04-17-2012, 09:02 AM	#19
DSGGEN2 Senior Member Join Date: Feb 2012 Location: Floriduh Posts: 114	U crazy sumbitch! Time to turn it up.

04-20-2012, 03:14 AM	#20
oldskoolstang Senior Member Join Date: Apr 2012 Location: Guyton, GA Posts: 1,412	Damn, I just scrapped a perfectly good pair of PI heads......I forget people use that 2v crap. No offense, I just hate 'em. __________________ Working on junk....