Finally...twin turbos for my LFX - Page 43 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

JantzenOKC · 10-15-2015, 02:27 PM

Quote:

Originally Posted by rgrmoreira13

That's not bad. nothing that a good buffer can't knocked out.

On a serious note are you planning to add forged internals to the engine so it can handle the boost you have on the car from now on ? Or removing the turbos entirely ?

Forged internals are the plan, factory crank is already forged so just needs rods and pistons. Turbos are here to stay!

JantzenOKC · 10-15-2015, 02:38 PM

Quote:

Originally Posted by Fabberge

you should donate your block for display

I'll donate the block to you if you'll donate your new v-band clamps and larger swingvalves to me for my build...

Otherwise it'll be displayed in my man cave

smithnc · 10-15-2015, 02:45 PM

Quote:

Originally Posted by JantzenOKC

I'll donate the block to you if you'll donate your new v-band clamps and larger swingvalves to me for my build...

Otherwise it'll be displayed in my man cave

I would love to get the new v-band clamps and larger swingvalves as well

JantzenOKC · 10-15-2015, 04:49 PM

Quote:

Originally Posted by smithnc

I would love to get the new v-band clamps and larger swingvalves as well

Haven't heard much from you, how are you liking the turbos?

HP Turbine · 10-15-2015, 08:36 PM

I may not have a future in graphic arts, but I do have a degree in ball busting

JantzenOKC · 10-15-2015, 10:40 PM

smithnc · 10-16-2015, 12:02 AM

Quote:

Originally Posted by JantzenOKC

Haven't heard much from you, how are you liking the turbos?

Turbos are absolutely amazing... I beat a c7 multiple times in a row. Did notice that the braided hose from the scavenge pump to valve cover is leaking but it's not that bad just a small mist. I contacted Fabberge to get the hose covered under warranty. I'm trying to go to a 1320 meet tomorrow night.

JantzenOKC · 10-16-2015, 09:28 AM

Nice, yeah these things are beasts on the highway! I get a lot of 5.0 mustangs that want to play and do little highway pulls just to pick on my little RS. I love it.

rgrmoreira13 · 10-16-2015, 12:34 PM

Quote:

Originally Posted by JantzenOKC

Forged internals are the plan, factory crank is already forged so just needs rods and pistons. Turbos are here to stay!

How much boost did you have it on ? 9lbs or 10lbs ????
I thought the LFX engine could handle between 12lbs to 15lbs of boost.
Was there anything else that could have added stress to the pistons and rods ??

JantzenOKC · 10-16-2015, 02:30 PM

Quote:

Originally Posted by rgrmoreira13

How much boost did you have it on ? 9lbs or 10lbs ????
I thought the LFX engine could handle between 12lbs to 15lbs of boost.
Was there anything else that could have added stress to the pistons and rods ??

Around 14-15lbs probably. The piston broke right at the oiling ring. I don't know if it was from excessive cylinder pressure or just a weakened piston. I had an injector failure when I first put the turbo kit on(5000 miles ago) it was stuck open and there was a lot of fuel in the cylinder. The piston that failed was in the same cylinder. So it's possible it tried to hydrolock then, just enough to weaken the piston? There were no signs of detonation and usually when these pistons break from too much boost its the top ringland not at the bottom oiling ring. It's hard to say.

JaxChris · 10-17-2015, 03:50 AM

Just some thoughts, hope you find them helpful in your quest.

From your pretty thorough tear down it appears that you weren't getting enough oil on the pistons, rings or cylinder walls. Remove the catch can and let the oil vapor help out from above. Spray a small bit of seafoam during each oil change to clean up the valves instead. Boost increases cylinder pressure and more pressure is more heat and more heat is more expansion and more expansion is above tolerance... kaboom. That's the reason the LF3 & LF4 have oil squirters cast into the block.

If you want to be the LFX boost champ, you should look into tapping the oil galleries to install oil squirters. Or maybe the LF3 short block can be configured with your existing heads and new internals. I don't know if the oil channels line up between the LFX and LF3 heads, but it is very likely they do.

The LFX just doesn't have the oil flow or oil pressure to keep any pistons/rings/rods happy above 10-12lbs of boost. Even if you forged them and thermal coated them, you still need lube along the interface.

Good luck in your rebuild.

crc91 · 10-17-2015, 06:37 AM

Is it crazy expensive to get oil squirters installed?

Sent from my iPhone using Tapatalk

JantzenOKC · 10-17-2015, 07:35 AM

All LLT's and LFX's have oil squirters from the factory. They spray oil on the bottoms of the pistons and on the cylinder walls. That's always been a cool feature of these engines. And I don't think oil in the combustion chamber is a good thing. I want to keep the oil out!

JantzenOKC · 10-17-2015, 07:47 AM

Here's what they look like.

10-15-2015, 08:36 PM	#593
HP Turbine Boosted Drives: 2012 1LT RS... with snails Join Date: May 2012 Location: New Hampshire Posts: 1,455 View My Garage	I may not have a future in graphic arts, but I do have a degree in ball busting Attached Images __________________ IPS Twin Turbos, Corsa Exhaust, Ported Throttle Body. 461 rwhp 443 rwtq!! Cameron Hass.ani

10-15-2015, 10:40 PM	#594
JantzenOKC Drives: '13 2LT/RS Twin Turbo Join Date: Aug 2012 Location: Edmond, Oklahoma Posts: 3,073	__________________ 3.6L Twin Turbo V6 Garrett GT28 turbos -- Jacfab forged connecting rods -- Diamond forged pistons(10.5:1) -- Alky Control Methonal Injection -- CircleD 2E triple disc torque converter -- BMR suspension 10.75 @ 131mph

10-16-2015, 09:28 AM	#596
JantzenOKC Drives: '13 2LT/RS Twin Turbo Join Date: Aug 2012 Location: Edmond, Oklahoma Posts: 3,073	Nice, yeah these things are beasts on the highway! I get a lot of 5.0 mustangs that want to play and do little highway pulls just to pick on my little RS. I love it. __________________ 3.6L Twin Turbo V6 Garrett GT28 turbos -- Jacfab forged connecting rods -- Diamond forged pistons(10.5:1) -- Alky Control Methonal Injection -- CircleD 2E triple disc torque converter -- BMR suspension 10.75 @ 131mph

10-17-2015, 06:37 AM	#600
crc91 Drives: '14 1LS Join Date: Apr 2014 Location: Mandeville Posts: 2,166	Is it crazy expensive to get oil squirters installed? Sent from my iPhone using Tapatalk __________________ Patiently waiting for my 2023 SS 1LE

10-17-2015, 07:35 AM	#601
JantzenOKC Drives: '13 2LT/RS Twin Turbo Join Date: Aug 2012 Location: Edmond, Oklahoma Posts: 3,073	All LLT's and LFX's have oil squirters from the factory. They spray oil on the bottoms of the pistons and on the cylinder walls. That's always been a cool feature of these engines. And I don't think oil in the combustion chamber is a good thing. I want to keep the oil out! __________________ 3.6L Twin Turbo V6 Garrett GT28 turbos -- Jacfab forged connecting rods -- Diamond forged pistons(10.5:1) -- Alky Control Methonal Injection -- CircleD 2E triple disc torque converter -- BMR suspension 10.75 @ 131mph

10-17-2015, 03:50 AM	#599
JaxChris Drives: '16 2SS GD1 MX0 NPP F55 IO6 Join Date: Jun 2013 Location: Florida Posts: 1,298	Just some thoughts, hope you find them helpful in your quest. From your pretty thorough tear down it appears that you weren't getting enough oil on the pistons, rings or cylinder walls. Remove the catch can and let the oil vapor help out from above. Spray a small bit of seafoam during each oil change to clean up the valves instead. Boost increases cylinder pressure and more pressure is more heat and more heat is more expansion and more expansion is above tolerance... kaboom. That's the reason the LF3 & LF4 have oil squirters cast into the block. If you want to be the LFX boost champ, you should look into tapping the oil galleries to install oil squirters. Or maybe the LF3 short block can be configured with your existing heads and new internals. I don't know if the oil channels line up between the LFX and LF3 heads, but it is very likely they do. The LFX just doesn't have the oil flow or oil pressure to keep any pistons/rings/rods happy above 10-12lbs of boost. Even if you forged them and thermal coated them, you still need lube along the interface. Good luck in your rebuild.

10-17-2015, 07:47 AM	#602
JantzenOKC Drives: '13 2LT/RS Twin Turbo Join Date: Aug 2012 Location: Edmond, Oklahoma Posts: 3,073	Here's what they look like. Attached Images __________________ 3.6L Twin Turbo V6 Garrett GT28 turbos -- Jacfab forged connecting rods -- Diamond forged pistons(10.5:1) -- Alky Control Methonal Injection -- CircleD 2E triple disc torque converter -- BMR suspension 10.75 @ 131mph