Slight block damage. Should I be worried? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

LsxDoctor · 02-10-2018, 02:22 PM

Long story short, lifter failed, wiped out cam lobe, replaced lifter and cam, car ran good for roughly 3k miles. After 4 high speed back to back runs spun a bearing (guessing due to metal left in motor) I’m rebuilding the motor and noticed this. I’m not worried about this but I would like some opinions.

hou30guy · 02-10-2018, 02:29 PM

Nope dont think so not with stock stroke

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Russell James · 02-10-2018, 03:16 PM

If it were some rare or high dollar block, could check with a machine shop and see if they could bore and bronze bush the lifter bores. If not..scrap metal pile.

The lifter bores have to be perfect.

One drawback of the LS design is not being priority main oiling. The mains/rods are oiled off the lifter oil galley. Tear up a lifter bore, and there goes your oil flow to the mains. Not to mention that lifter being noisy and just tearing up again. But that is why your bearings failed after a tore up lifter. Debris and lack of oil to the mains/rods. Even with priority main oiling like an LSx block you still need perfect lifter bores. You have one destroyed, and the one next to it is gouged up.

hou30guy · 02-10-2018, 03:41 PM

Buff it and link bar lifters

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Russell James · 02-10-2018, 03:52 PM

frankwjr · 02-10-2018, 06:49 PM

pretty sure LS lifters ride in their GUIDES! soo, clean up any rough areas to remove any lose metal and clean the block like a mofo...good luck OP and if I'm wrong I want somebody to explain why...

Russell James · 02-10-2018, 07:08 PM

Quote:

Originally Posted by frankwjr

pretty sure LS lifters ride in their GUIDES! soo, clean up any rough areas to remove any lose metal and clean the block like a mofo...good luck OP and if I'm wrong I want somebody to explain why...

The top rides in the guide, bottom in the block. In the lifter bore they need about .0012" to .0014" give or take a few ten thousandths. That precision fit controls oil pressure to the mains. Loose lifters in tore up lifter bores will destroy the main and rod bearings in an LS motor.

It would be like putting a hole in your garden hose, and wondering why not much comes out the sprayer.

LsxDoctor · 02-10-2018, 09:11 PM

Thanks for ruining my night Russell! Jk I appreciate your expertise! I definitely would not have thought about that

hou30guy · 02-10-2018, 09:21 PM

I use johnson shot lifters, oil goes thru the lifter, if u zoom in on that pic you will see a nice size hole in the center that isnt on the gm ls3/7 lifters. Maximum flow of oil to lubricate that sht out of your motor.

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frankwjr · 02-10-2018, 10:11 PM

learn sumthin new...I stand corrected....blows OP...time for a LSX!

Bo White · 02-10-2018, 11:17 PM

As long as the lifter moves smoothly in the bore send it!

LsxDoctor · 02-10-2018, 11:49 PM

Been thinking about putting her back to stock and trading her in. good excuse for ZL1 or 6th gen

Quote:

Originally Posted by frankwjr

learn sumthin new...I stand corrected....blows OP...time for a LSX!

Bo White · 02-11-2018, 12:44 AM

Quote:

Originally Posted by hou30guy

I use johnson shot lifters, oil goes thru the lifter, if u zoom in on that pic you will see a nice size hole in the center that isnt on the gm ls3/7 lifters. Maximum flow of oil to lubricate that sht out of your motor.

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Center of where?

hou30guy · 02-11-2018, 03:12 AM

Quote:

Originally Posted by Bo White

Center of where?

Center of lifter where the push rod sits

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02-10-2018, 02:22 PM	#1
LsxDoctor 15 Year LS1Tech Member Drives: 2010 ss 391ci LS3 Join Date: Apr 2017 Location: Albuquerque Posts: 252	Slight block damage. Should I be worried? Long story short, lifter failed, wiped out cam lobe, replaced lifter and cam, car ran good for roughly 3k miles. After 4 high speed back to back runs spun a bearing (guessing due to metal left in motor) I’m rebuilding the motor and noticed this. I’m not worried about this but I would like some opinions. Attached Images

02-10-2018, 06:49 PM	#6
frankwjr Drives: 2010 SS 2SS M6 Join Date: Aug 2016 Location: Smithsburg, Md. Posts: 2,445	pretty sure LS lifters ride in their GUIDES! soo, clean up any rough areas to remove any lose metal and clean the block like a mofo...good luck OP and if I'm wrong I want somebody to explain why... __________________ 2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - *150K!* - All work by me...

02-10-2018, 10:11 PM	#10
frankwjr Drives: 2010 SS 2SS M6 Join Date: Aug 2016 Location: Smithsburg, Md. Posts: 2,445	learn sumthin new...I stand corrected....blows OP...time for a LSX! __________________ 2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - *150K!* - All work by me...

02-10-2018, 11:17 PM	#11
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	As long as the lifter moves smoothly in the bore send it! __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

02-10-2018, 02:29 PM	#2
hou30guy Drives: 2011 convertible 2ss/rs Join Date: Sep 2015 Location: Houston Posts: 971	Nope dont think so not with stock stroke Sent from my SM-N950U using Tapatalk

02-10-2018, 03:16 PM	#3
Russell James Drives: '15 SS 1LE, '69 Z28 drag car Join Date: Dec 2009 Location: Mich Posts: 4,482	If it were some rare or high dollar block, could check with a machine shop and see if they could bore and bronze bush the lifter bores. If not..scrap metal pile. The lifter bores have to be perfect. One drawback of the LS design is not being priority main oiling. The mains/rods are oiled off the lifter oil galley. Tear up a lifter bore, and there goes your oil flow to the mains. Not to mention that lifter being noisy and just tearing up again. But that is why your bearings failed after a tore up lifter. Debris and lack of oil to the mains/rods. Even with priority main oiling like an LSx block you still need perfect lifter bores. You have one destroyed, and the one next to it is gouged up.

02-10-2018, 03:41 PM	#4
hou30guy Drives: 2011 convertible 2ss/rs Join Date: Sep 2015 Location: Houston Posts: 971	Buff it and link bar lifters Sent from my SM-N950U using Tapatalk

02-10-2018, 09:11 PM	#8
LsxDoctor 15 Year LS1Tech Member Drives: 2010 ss 391ci LS3 Join Date: Apr 2017 Location: Albuquerque Posts: 252	Thanks for ruining my night Russell! Jk I appreciate your expertise! I definitely would not have thought about that

02-10-2018, 09:21 PM	#9
hou30guy Drives: 2011 convertible 2ss/rs Join Date: Sep 2015 Location: Houston Posts: 971	I use johnson shot lifters, oil goes thru the lifter, if u zoom in on that pic you will see a nice size hole in the center that isnt on the gm ls3/7 lifters. Maximum flow of oil to lubricate that sht out of your motor. Sent from my SM-N950U using Tapatalk