New 5.0 Mustang #8 Cyl Issue - Page 2

coolman · 07-26-2011, 07:31 PM

Quote:

Originally Posted by Black5thgen

I think it's too soon to make a statement that it's definitely the tuners and not Ford's fault at all. I want to hear more about it. It's funny that every mustang guy here is so quick to point the finger at the tuners.

I'm in no way a mustang guy ,but the mustang guys that I know with a stock 5.0l aren't having any problems. They also but this motor in the trucks. Is anyone having trouble with them?

While I agree with you that we shouldn't be pointing fingers yet, I also feel that Ford shouldn't be thrown under the bus until it's proven to be otherwise.

8cd03gro · 07-26-2011, 07:34 PM

Maybe it's because everyone that has broken a ringland has been tuned and ringlands don't break because of added power, they break because of knock. Read the threads on the mustang forums. Look at the pictures of the broken pistons. Learn a little about tuning. The guys that want to blame ford are the guys that had tunes and are now shocked that they have to pay for the repairs despite modifying their car.

Darkstar November · 07-26-2011, 07:35 PM

the interesting part of this is that all the cyl 8 failures are on bolt on cars.

we havent really heard of any cyl8 failures on boosted cars.

chrisx66 · 07-26-2011, 08:26 PM

We've had a dozen or so at my dealer with engine problems one was tuned and the warranty was denied. One stock one with a broken piston, a couple i put main bearings in for lower end knock, and a few with valvetrain issues.

Darkstar November · 07-26-2011, 08:28 PM

Quote:

Originally Posted by chrisx66

We've had a dozen or so at my dealer with engine problems one was tuned and the warranty was denied. One stock one with a broken piston, a couple i put main bearings in for lower end knock, and a few with valvetrain issues.

there have been a few reports of cars with ringland failures on fords calibration as well

wbt · 07-27-2011, 01:20 AM

Quote:

Originally Posted by John@Torq

its bc the original rumor was the tuners.

some tuners early on had dialed back the knock sensors to be able to run lots of timing. the ones who did this sent out tune revisions after they heard of the cyl 8 failures, some viewed this as the cause at the time, it has spread from that

Not a rumor....it was fact. Tuners were running lean and restricting the knock sensors. If you follow the issue, said tuners have sent revised tunes to their customers placing the knock sensors to factory values, offered warranties that cover damage and revised A/F ratios.

There is nothing "rumorous" about it.

wbt · 07-27-2011, 01:22 AM

Quote:

Originally Posted by Black5thgen

Survey says.............Mustang fanboi's blame the tuner!!!

Wanna talk about oil pump and lifter failures in the L99/LS3 motors?

Black5thgen · 07-27-2011, 08:14 AM

Quote:

Originally Posted by wbt

Wanna talk about oil pump and lifter failures in the L99/LS3 motors?

Yeah, it's a shitty GM design. Just like the 1 bolt cam and hyperutectic pistons. You don't see me humping GM's leg and blaming tuners for shitty engineering like you blind nut swinging ford guys.

steeleshark2 · 07-27-2011, 09:50 AM

Oil pump is not nearly as bad as a piston. As for lifters, it is not widespread on a car with just a tune.

assasinator · 07-27-2011, 12:56 PM

there are more objective peeps here about things like this.

A FORD FRPP TUNE BLEW UP ALSO!!!!!!!! surely ford engineers know something about the tuning. this FACT is being ignored.

its not a tuner problem, its a ring tolerance issue. tune the car with a bad motor, and it will fail.

its not a defect in a stock motor, but if power levels are raised its will fail. ive pulled 4 degrees in my tune. a/f is good in the tune according to datalogs.

assasinator · 07-27-2011, 12:58 PM

Quote:

Originally Posted by John@Torq

there have been a few reports of cars with ringland failures on fords calibration as well

EXACTLY!!!!!!!

its a run of engines with ring tolerances too close for handling extra power.

Quote:

Originally Posted by Black5thgen

I think it's too soon to make a statement that it's definitely the tuners and not Ford's fault at all. I want to hear more about it. It's funny that every mustang guy here is so quick to point the finger at the tuners.

every mustang owner?

garcmol · 07-27-2011, 01:06 PM

In regards to ring tolerances; is that the gap at the end, or ends, of the ring? If so, is this problem causing it to expand, close the gap and break? Just curious.

Black5thgen · 07-27-2011, 01:10 PM

Quote:

Originally Posted by assasinator

every mustang owner?

Not every, but most on this site.

Nvincent4708 · 07-27-2011, 01:10 PM

I wouldn't point fingers. There will be faulty products with a first run..or second run.

I mean we have the oil pump issue, the tailshaft on the trans. Lifter issues on the L99.

And one magical case of a failed lifter on an ls3..that'd be mine.

Some said my tune, but my tune was BEYOND safe. Then when the motor was torn down..found the broken retainer clip for the lifter..

I'd say too tight tolerances. Or something about those blocks was off for just that cylinder. Possible a mistyped calculation in the CNC software? Who knows.

07-27-2011, 09:50 AM	#23
steeleshark2 Drives: 2010 Transformer 1SS Camaro Join Date: Nov 2009 Location: Kingsland, Ga Posts: 2,553 View My Garage	Oil pump is not nearly as bad as a piston. As for lifters, it is not widespread on a car with just a tune. __________________ Build page:http://www.camaro5.com/forums/showth...77#post3083477

07-27-2011, 12:56 PM	#24
assasinator 1 n the head,2 n da chest Drives: 2002 cadillac deville Join Date: Apr 2010 Location: huntsville al. Posts: 659	there are more objective peeps here about things like this. A FORD FRPP TUNE BLEW UP ALSO!!!!!!!! surely ford engineers know something about the tuning. this FACT is being ignored. its not a tuner problem, its a ring tolerance issue. tune the car with a bad motor, and it will fail. its not a defect in a stock motor, but if power levels are raised its will fail. ive pulled 4 degrees in my tune. a/f is good in the tune according to datalogs. __________________ 2011GT E85, Kooks 1-7/8", 3" offroad X, 2-7/8" overaxles, Roush mufflers, CobraJet intake, SCJ monoblade throttle body, drew 4.5" CAI, Boss302S exhaust valve springs, Baby CobraJet exhaust cams. 3.73 gears, lightweight 300A. 455rwhp @7800/410rwtq SAE 5000lb roller dynojet

07-27-2011, 01:06 PM	#26
garcmol Drives: 10 1LT SIM; 91 B4C sleeper Z Join Date: Aug 2009 Location: Ft. Mitchell, Alabama Posts: 7,198	In regards to ring tolerances; is that the gap at the end, or ends, of the ring? If so, is this problem causing it to expand, close the gap and break? Just curious. __________________ Pedders Pace Car Package, Injen CAI, Flowmaster AT, AAC Lighting, ZL1 fascia/skirts, RKSport Ram Air hood, vented fenders, painted stripes (Gary's Customz), Honor and Valor badged (Thank you, John)

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07-26-2011, 07:34 PM	#16
8cd03gro Drives: 2005 STi corn fed Join Date: Jul 2008 Location: Colorado Posts: 2,997	Maybe it's because everyone that has broken a ringland has been tuned and ringlands don't break because of added power, they break because of knock. Read the threads on the mustang forums. Look at the pictures of the broken pistons. Learn a little about tuning. The guys that want to blame ford are the guys that had tunes and are now shocked that they have to pay for the repairs despite modifying their car.

07-26-2011, 07:35 PM	#17
Darkstar November Drives: 2011 Mustang GT Join Date: Jun 2011 Location: south florida Posts: 262	the interesting part of this is that all the cyl 8 failures are on bolt on cars. we havent really heard of any cyl8 failures on boosted cars.

07-26-2011, 08:26 PM	#18
chrisx66 Drives: 66 Chevelle 8:02 @174 Join Date: Jan 2010 Location: Texas Posts: 195	We've had a dozen or so at my dealer with engine problems one was tuned and the warranty was denied. One stock one with a broken piston, a couple i put main bearings in for lower end knock, and a few with valvetrain issues.

07-27-2011, 01:10 PM	#28
Nvincent4708 Drives: N/A Join Date: Nov 2010 Location: N/A Posts: 25,856 View My Garage	I wouldn't point fingers. There will be faulty products with a first run..or second run. I mean we have the oil pump issue, the tailshaft on the trans. Lifter issues on the L99. And one magical case of a failed lifter on an ls3..that'd be mine. Some said my tune, but my tune was BEYOND safe. Then when the motor was torn down..found the broken retainer clip for the lifter.. I'd say too tight tolerances. Or something about those blocks was off for just that cylinder. Possible a mistyped calculation in the CNC software? Who knows.