1fstGM

iTrader: (13)

I was just curious to know if you or anyone you know has blown their built motor? What did it take? How much nitrous, boost, etc...

JZ'sTA

iTrader: (23)

80+ boddles with a 150 shot or more.
100+ 10.5-11.2 time slips.
500+ street races.
Thats about it.
Oh, and 25,000 very easy driven miles.

PREDATOR-Z

50+ passes at the track on 150>200 shot dry per year for 4 years
Countless abuse on street,
45K miles
rod bolt failure, rod bearing failure #7 (happened under normal driving, no major damage to motor, still rebuildable)
2001 Z28 A4

1fstGM

iTrader: (13)

Keep it coming guys this is good info! So it gave up when you went how much of a shot?

383ss

iTrader: (14)

my 383 took 50,000 miles of HARD driving and probably 150+ passes at the track, MANY launching at 5-6500. didn't blow, but I took it apart and #8 Piston had a cracked pin boss. it didn't have much longer.

I beat the **** out of this motor. I once laid 1/4 mile of black marks with it with 315's.

critter

iTrader: (9)

12 pulls on the dyno and 4 passes, all N/A

JEB99TA

iTrader: (32)

Must've had faulty parts or something was wrong with the build. That's not par favor for a built/forged LS1 engine. What went bad in it? Did your builder honor his warranty and make it right?

critter

iTrader: (9)

I would agree that it is not the norm. Faulty parts? J&E pistons, Manley rods, FM bearings, new pump, new cam, new timing chain, etc. Big name shop.
Pictures
What warranty? "Race motors do not have a warranty." We are talking about the situation.

JEB99TA

iTrader: (32)

Any part manufacturer can have defective parts.



That's some nasty **** ... I'd have a 'tude, too.

My 'Big name' shop stands behind their work and I'll guarantee you they would NEVER allow something like that to go unresolved. If it was their work, they'd take care of you. If was manufacturers parts, they'd resolve it with the manufacturer. You need a lawyer.

menlatin

OMFG..... I got a little nauseous when i saw those. I can't even imagine how that must feel.

critter

iTrader: (9)

LOL!! I know that. The point was that this engine was not built with EBAY parts (or maybe JC Whitney parts would be better) The reason for using $1000 worth of Manley Pro rods is that they won't fail.
Ehhh ... don't really have a 'tude yet.
LOL! My 'Big Name' shop stands behind their work too. 'course, they didn't follow along after I left their shop, so it might be my fault instead of theirs. We are talking about that and I don't know where it will go yet.

Nah, I am old school and I have been on both sides of the fence. I won't get a lawyer. The lawyers are the only ones who win in these situations. Any victory I might get from legal action would be moral and rather hollow.

Viper

iTrader: (6)

12K miles, valve spring broke, dropped a valve, took out the motor. Forged JPR 348. Never drag raced it or launched over 3500.

racer7088

I don't know who built it but it ran low on oil to the rods. Thats why the rod journals are black and blue and the rod bearings are pounded out or spun. Not good but someone should've noticed some knocking and/or low oil pressure. Was this a solid roller or a hydraulic roller engine?

critter

iTrader: (9)

I know and intend to keep that to myself for at least a while. BTW Eric, this was the second motor, not the one in the other thread you responded too ...
That is what I think too, but have no idea how. The mains are good and the oil for the rods comes from there. 1, 2, 7, and 8 look good. 3 & 6 broke. 4 & 5 look bad but not as bad as 3 & 6. I can't make any sense out of that pattern.
Solid rollers. I never heard a knock above the sound of the bullets (dang near as loud as open headers) like I did with the first engine. This one let go halfway through third gear. The oil pressure was over 70 earlier, but I did not check it frequently. Been too long and I am way out of practice.

01FbTaWs6

iTrader: (12)

OUCH, sorry to hear that dude

1fstGM

iTrader: (13)

Anyone else? This is good stuff for fellow members. This way they know how far to push their motors. Keep it coming. Specific numbers would help also.

1fstGM

iTrader: (13)

Ttt...

DONAIMIAN

iTrader: (18)

Stock oil pump.

ArcticZ28

iTrader: (14)

1 small piece of a broken valve from my prior engine that lodged itself in the intake manifold unbeknownst to me when I transferred it over to the new one and it came loose and F'ed my new engine on the dyno.

critter

iTrader: (9)

To bring closure to this issue, apparently the verdict is in. Although my big name vendor talked about standing behind their work and parts up front, there is no warranty on race engines. Besides, apparently it is my fault since they could have done nothing wrong. They say my tune must have caused it to detonate, taking out the rod bearings. They conveniently ignore the facts that, the engine was fat running 107 octane with less compression and less lead than last year, and there is no sign of detonation on pistons, heads, or plugs. Caveat emptor ...