Bent Rod cylinder 7 L&M Rebuilt

[PC 2015]

3369F147-6792-4D74-9AD4-BEA0FF317581

• Patmcgee957
• Jun 4, 2019

2019 gt Whipple 3.0l stage 2 with Whipple tuning. Cylinder 7 piston removed this morning. Rod bearings spanked too. Car has 1200 miles on it with 150 miles with kit installed

That's crazy that almost sounds identical to my situation. Except I had 1000 miles on kit.

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[engineermike]

What pulley and fuel were each of the broken cars running?

 

[Patmcgee957]

What pulley and fuel were each of the broken cars running?

Magnetti marelli 38 lb/hr injectors. Dw400 pump. 3.875 pulley

 

[olaosunt]

Any reason you could not have reused/sleeved your old block ?
Last time I looked though the Gen 3 blocks were relatively cheap .

Pardon me if this a dumb question , as you know I have a technical disability , burbdid the bent rod cause the “spun “ rod bearings or vice versa ?

Any idea what caused the rod to bend ?

Thanks

 

[F1scamp]

Assuming it didnt hydrolock, sounds like they are overpowering the rods. Interesting you never hear a 15-17 bend the rods, wonder why they made them weaker..

 

[PC 2015]

What pulley and fuel were each of the broken cars running?

3.75 93 whipple tune with boostane in most tanks.

 

[PC 2015]

Assuming it didnt hydrolock, sounds like they are overpowering the rods. Interesting you never hear a 15-17 bend the rods, wonder why they made them weaker..

I wonder if there was a bad batch? I thought the rods were the same 15-19. But it's crazy you have a couple running 8', a bunch running low 9's and everyone else who FI with gen3 running mid 9's to low 10's unless you running a roush lol. Well it cost me 14000 not including pulling and putting it back in. Witch wont be bad as I'm getting some help.

 

[PC 2015]

Any reason you could not have reused/sleeved your old block ?
Last time I looked though the Gen 3 blocks were relatively cheap .

Pardon me if this a dumb question , as you know I have a technical disability , burbdid the bent rod cause the “spun “ rod bearings or vice versa ?

Any idea what caused the rod to bend ?

Thanks

Are asking me Haha or pat957?

 

[olaosunt]

Here is another one .
Yikes . Time to start building that spare !
https://www.mustang6g.com/forums/threads/2018-mustang-gt-a10-whipple-stage-2-engine-rod-bent.123294/

 

[Bald Menace]

Dude, do a search for Kaspers Corner on yellowbullet.com. you are a brave man letting them, touch your car

 

[gimmie11s]

Magnetti marelli 38 lb/hr injectors. Dw400 pump. 3.875 pulley

Not enough fuel.

Assuming it didnt hydrolock, sounds like they are overpowering the rods. Interesting you never hear a 15-17 bend the rods, wonder why they made them weaker..

They did not "make them weaker". The rods are the same exact rods used in the Boss 302 (same part number actually) and are arguably the strongest rod ever put in a mustang other than the 03/04 Terminator rod.

They are tough AF and if you bend one under 900whp, something is wrong in the tune up, the fuel, something......

The rod is bending from the broken piston/ring land scoring/gouging the cylinder bore immediately slowing down the piston placing undue pressure on the rod.

The piston is failing first causing the rod to fail.... Gauranteed.

 

[PC 2015]

Dude, do a search for Kaspers Corner on yellowbullet.com. you are a brave man letting them, touch your car

Nah. It under new ownership. Todd baught his brother out. Completely diffrent shop now. I usually do things myself. But when I cant they have done me right everytime.

 

[PC 2015]

@gimmie11s if it not enough fuel then whipple needs to change their kit. Because that's what you get in a stage2 kit.

 

[PC 2015]

Oh I forgot the motor is done. Picking it up tomorrow morning.

 

[gimmie11s]

@gimmie11s if it not enough fuel then whipple needs to change their kit. Because that's what you get in a stage2 kit.

The blown motors would agree? Lol

New motor looks good man!

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