L99 Cam swap - found broken rockers - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

InFiD3ViL · 03-27-2017, 12:41 PM

Quote:

Originally Posted by Bo White

Think of the millions of LS powered vehicles on the road with stock rockers. Its still considered rare rockers fail.
Im at 121k miles and my second cam in my car with original stock rockers.

I am sure statistically speaking, it is a very low percentage of failures.

But it is awful scary to hear about this, especially on a car with 20K miles.

Bo White · 03-27-2017, 01:01 PM

Understood. Lots of stuff happens that are reported that fail like the timing chain tensioners, valves, valve springs and pistons but how common are they really. Out of the things you read about the tensioner gets the biggest hit. Ive had plenty of shops tell me about tensioners than anything else. Sometimes its luck of the draw on part failures though.

Russell James · 03-27-2017, 01:11 PM

If the valves were not being hit square, I'd be replacing those valves and checking guides. I don't like using valves that have been hit off center a few million times. Especially if it's multi piece/hollow valve. Wouldn't hurt to check the guide for wear also.

Should be able to fish around in the pan for the rollers with a small reach magnet.

0331Marine · 03-27-2017, 01:45 PM

Quote:

Originally Posted by WHAMMO

Wow thanks for the info!! DEfinitly keeping an eye on this!

Im about to go pick up a set. For $149 I'll try give them a shot. Summit has always stood behind their products, so Ill go to my local one and ask a few questions.

15rs/ss · 03-27-2017, 04:44 PM

Quote:

Originally Posted by 0331Marine

Im about to go pick up a set. For $149 I'll try give them a shot. Summit has always stood behind their products, so Ill go to my local one and ask a few questions.

I was at summit this morning and asked a guy i know that works at the sales counter and it was news to him that they even offered them. They let you check stuff out at the pick up counter before you buy. Im going to check them out tomorrow as i was in a rush today.

Ashen 6.2 · 03-28-2017, 05:18 AM

Thanks for all the input! I was sold on sticking with the factory rockers till this happened. I ordered a C.H.E Trunnion kit yesterday along with two new intake rockers. Having the heads/valves looked at while the springs are being changed on Thursday.

WHAMMO · 03-28-2017, 11:42 AM

Quote:

Originally Posted by Bo White

Understood. Lots of stuff happens that are reported that fail like the timing chain tensioners, valves, valve springs and pistons but how common are they really. Out of the things you read about the tensioner gets the biggest hit. Ive had plenty of shops tell me about tensioners than anything else. Sometimes its luck of the draw on part failures though.

The timing chain tensionner is the absolute words POS of all!! Mine was broken in hafl after 20k miles on stock internals! Dogbone upgrade is a must!

Ashen 6.2 · 04-15-2017, 09:15 PM

Thought i would post an update on this.

Ended up pulling the block completely out of the car to drop the pan and search for the needle bearings. Had to pull the transmission anyways since I was putting a Circle D converter in. Figured there wasn't much more to disconnect to get the block out, so why not.

While the block was out we pulled the pan and found 1 needle bearing. Removed the oil pick-up and found the remaining needle bearings sucked up against the pick-up screen. In case anyone needs to know, there are 33 needle bearings on each side of the rocker, 66 total. Put in a new pick-up tube, o-ring and pan gasket before putting the block back in. We also put the new cam in and front cover back on while the block was out.

Took the heads to GPI to get the new springs put on & the valves looked at. Aaron checked everything out and thankfully nothing was out of whack. Also swapped out my intake for one with a rod-mod while I was there.

Finally got everything back together and fired it up on Monday evening. Have been driving around on the start up tune since. Will be heading to see Ryan on Wednesday for dyno tuning. Can't wait to get that done!

I have heard a lot of great things about Ryan, Aaron & Josh at GPI and every bit of it is true. They are very busy but still take the time to interact with you, let you look around the shop and ask all the questions/advice as you want. Awesome group there.

LCPLPunk · 04-15-2017, 09:38 PM

Awesome, glad to hear everything is turning out right. What power are you expecting to see?

hammdo · 04-15-2017, 10:06 PM

Ryan, Aaron and the group at GPI are great to work with. Worth me driving up,there for my VVT tunes...

Looking forward to the results...

-Don

03-28-2017, 05:18 AM	#20
Ashen 6.2 Drives: 2014 Camaro Z/SS Join Date: May 2014 Location: NW Arkansas Posts: 1,991 View My Garage	Thanks for all the input! I was sold on sticking with the factory rockers till this happened. I ordered a C.H.E Trunnion kit yesterday along with two new intake rockers. Having the heads/valves looked at while the springs are being changed on Thursday. __________________ 2014 Camaro SS L99, Ashen Grey w/Black Leather - Build thread - http://www.camaro5.com/forums/showthread.php?t=491561 Mods - GPI 416 w/Custom Grind Cam, Ported Heads & Tuned by Ben, Mag Heartbeat, ZL1 Fuel Pump & DSX Aux Pump, NW 103 TB, FIC 1650's, Alky Meth, Circle D 3600 Triple Disc, RPM 5” CAI, Kooks Headers, Solo Cat Back, Viking Coil Overs & all the BMR Goodies in the rear, Zl1 3.23 Diff, DSS Axles, Gulfcoast Driveshaft, Hendrix Offset Diff Bushings, AFE Solid Subframe Bushings, 875HP/843TQ 5FDP

04-15-2017, 09:15 PM	#22
Ashen 6.2 Drives: 2014 Camaro Z/SS Join Date: May 2014 Location: NW Arkansas Posts: 1,991 View My Garage	Thought i would post an update on this. Ended up pulling the block completely out of the car to drop the pan and search for the needle bearings. Had to pull the transmission anyways since I was putting a Circle D converter in. Figured there wasn't much more to disconnect to get the block out, so why not. While the block was out we pulled the pan and found 1 needle bearing. Removed the oil pick-up and found the remaining needle bearings sucked up against the pick-up screen. In case anyone needs to know, there are 33 needle bearings on each side of the rocker, 66 total. Put in a new pick-up tube, o-ring and pan gasket before putting the block back in. We also put the new cam in and front cover back on while the block was out. Took the heads to GPI to get the new springs put on & the valves looked at. Aaron checked everything out and thankfully nothing was out of whack. Also swapped out my intake for one with a rod-mod while I was there. Finally got everything back together and fired it up on Monday evening. Have been driving around on the start up tune since. Will be heading to see Ryan on Wednesday for dyno tuning. Can't wait to get that done! I have heard a lot of great things about Ryan, Aaron & Josh at GPI and every bit of it is true. They are very busy but still take the time to interact with you, let you look around the shop and ask all the questions/advice as you want. Awesome group there. Attached Images __________________ 2014 Camaro SS L99, Ashen Grey w/Black Leather - Build thread - http://www.camaro5.com/forums/showthread.php?t=491561 Mods - GPI 416 w/Custom Grind Cam, Ported Heads & Tuned by Ben, Mag Heartbeat, ZL1 Fuel Pump & DSX Aux Pump, NW 103 TB, FIC 1650's, Alky Meth, Circle D 3600 Triple Disc, RPM 5” CAI, Kooks Headers, Solo Cat Back, Viking Coil Overs & all the BMR Goodies in the rear, Zl1 3.23 Diff, DSS Axles, Gulfcoast Driveshaft, Hendrix Offset Diff Bushings, AFE Solid Subframe Bushings, 875HP/843TQ 5FDP

04-15-2017, 09:38 PM	#23
LCPLPunk USA-1 Drives: 2010 Camaro SS L99 Join Date: Jul 2016 Location: Near DC Posts: 1,893 View My Garage	Awesome, glad to hear everything is turning out right. What power are you expecting to see? __________________ "A Camaro in the garage is safe, but that's not what Camaros are built for..." R2C CAI / Apex Scoop / VMAX Ported TB / Speed Engineering LTHs / X-pipe / GPI port/rod-mod intake manifold / Circle D 3200 278mm Converter / 3.91 gears / DynoSteve tuned / 1LE Shocks/Struts/Toe Links / ZL1 Rear Sway Bar / Z/28 Trailing arms / Prothane Radius Arm & Subframe Bushings / BMR UCA Bracket, Steering rack bushing / B&M Tranny Cooler / RX Catch Can / Jannetty Tranny Dipstick / 2012+ Heater Hose / 2013+ Rearview Mirror / Fuel rail flip / Drake shifter / Oil Cooler Delete

04-15-2017, 10:06 PM	#24
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,690 View My Garage	Ryan, Aaron and the group at GPI are great to work with. Worth me driving up,there for my VVT tunes... Looking forward to the results... -Don __________________ 747 RWHP 794 RWTQ "Horsepower sells cars, torque wins races." - Enzo Ferrari See My Build: http://www.camaro5.com/forums/showthread.php?t=385577

03-27-2017, 01:01 PM	#16
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,017	Understood. Lots of stuff happens that are reported that fail like the timing chain tensioners, valves, valve springs and pistons but how common are they really. Out of the things you read about the tensioner gets the biggest hit. Ive had plenty of shops tell me about tensioners than anything else. Sometimes its luck of the draw on part failures though.

03-27-2017, 01:11 PM	#17
Russell James Drives: '15 SS 1LE, '69 Z28 drag car Join Date: Dec 2009 Location: Mich Posts: 4,483	If the valves were not being hit square, I'd be replacing those valves and checking guides. I don't like using valves that have been hit off center a few million times. Especially if it's multi piece/hollow valve. Wouldn't hurt to check the guide for wear also. Should be able to fish around in the pan for the rollers with a small reach magnet.