PQs Camaro [COTW 9/20/10] - Page 350 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

PQ · 07-12-2013, 12:41 PM

Quote:

Originally Posted by JusticePete

How many miles are on the engine?

86k

Only 45k on the oil pump.

JusticePete · 07-12-2013, 12:44 PM

When the new cam went in were the bearings replaced?

PQ · 07-12-2013, 12:55 PM

Quote:

Originally Posted by JusticePete

When the new cam went in were the bearings replaced?

Doubt it. Vengeance did the install.

I have to get my sheet to know.

JusticePete · 07-12-2013, 01:30 PM

Disclaimer: I am not an engine expert.

My best guess is you're losing pressure at the cam bearings. Maybe we can get an engine expert to weigh in.

ssmike · 07-12-2013, 02:04 PM

Just my opinion here but with that many miles I would think the engine could use a rebuild anyway! Especially with the Maggy on it and the way you downshift it has had a hard life! If you decide to pull the engine I would stroke it and use some forged internals, or replace the whole engine with an LSA crate or LS7 crate engine. Then sell the LS3 for the block and sell the Maggy to recoupe some cost!

Edit: sell the L99 not LS3. Forgot you have an auto

PQ · 07-12-2013, 02:12 PM

Quote:

Originally Posted by ssmike

Just my opinion here but with that many miles I would think the engine could use a rebuild anyway! Especially with the Maggy on it and the way you downshift it has had a hard life! If you decide to pull the engine I would stroke it and use some forged internals, or replace the whole engine with an LSA crate or LS7 crate engine. Then sell the LS3 for the block and sell the Maggy to recoupe some cost!

Edit: sell the L99 not LS3. Forgot you have an auto

I can't afford an LS7. Even selling my Maggie. It'll depend on where my problem is that I try and figure out where I go from here.

A whole new engine is enticing but not practical for me right now.

JusticePete · 07-12-2013, 02:36 PM

Quote:

Originally Posted by PQ

I can't afford an LS7. Even selling my Maggie. It'll depend on where my problem is that I try and figure out where I go from here.

A whole new engine is enticing but not practical for me right now.

Tear it down and have a machine shop check the crank, block and heads and machine as required. If my guess is right, you'll need a new cam. Most everything else should be good. Replace the rings, bearings and gaskets along with freshened heads and you are good for another 86K.

Another option is pull the engine to replace the cam and bearings. While it is open replace the main and connecting rod bearings. Install a new oil pump and you should be reliable for a fair number of miles.

Can you do a compression test as she sits?
Cylinder leak down?

Again, I am guessing, but I think the debris will be from the cam and cam bearings. I think you can check them with the engine still in the car and a scope. A close inspection of the cam will probably tell the story.

ssmike · 07-12-2013, 02:37 PM

I hear ya! I'll be eager to see what you find inside! Good luck!

PQ · 07-12-2013, 03:18 PM

Quote:

Originally Posted by JusticePete

Tear it down and have a machine shop check the crank, block and heads and machine as required. If my guess is right, you'll need a new cam. Most everything else should be good. Replace the rings, bearings and gaskets along with freshened heads and you are good for another 86K.

Another option is pull the engine to replace the cam and bearings. While it is open replace the main and connecting rod bearings. Install a new oil pump and you should be reliable for a fair number of miles.

Can you do a compression test as she sits?
Cylinder leak down?

Again, I am guessing, but I think the debris will be from the cam and cam bearings. I think you can check them with the engine still in the car and a scope. A close inspection of the cam will probably tell the story.

I thought about a compression and leakdown. I just didn't figure it would be related to the valves and rings yet considering the loss of oil pressure. Not sure it would be smart to do with the oil and water pumps off. hahaha

Quote:

Originally Posted by ssmike

I hear ya! I'll be eager to see what you find inside! Good luck!

JusticePete · 07-12-2013, 03:49 PM

Compression and leak down check are not related to the low oil pressure. If you find a low cylinder relative to the others it raises the possibility the debris in the oil pump or pan may have traveled and done other damage.

Again, I am not an engine expert, but the minimal cranking required to do a compression test without any plugs in the car shouldn't do any damage.

PQ · 07-12-2013, 03:53 PM

Quote:

Originally Posted by JusticePete

Compression and leak down check are not related to the low oil pressure. If you find a low cylinder relative to the others it raises the possibility the debris in the oil pump or pan may have traveled and done other damage.

Again, I am not an engine expert, but the minimal cranking required to do a compression test without any plugs in the car shouldn't do any damage.

True. I only ever turned it over like 3 or 4 times to get my pressure for the tests.

I always hated those tests because if you found what you were looking for it meant bad news.

zebra · 07-15-2013, 05:43 PM

Quote:

Originally Posted by IRPQ

So I'm pulling the engine this weekend. Any tips are gladly welcomed.

*cough* jason *cough*

please tell me you're asking another jason... i've only pulled an engine out of my truck & sure never tore into it. all i know is theory & hearsay

Quote:

Originally Posted by SSE 4 2SS

Here's a question, Where did the metal come from that caused the damage to the pump..... This sux....

that's my question, too

Quote:

Originally Posted by JusticePete

...or

Tear it down and rebuild it now with a 4" Callies crank.

Opinions????

fixed that for ya

Quote:

Originally Posted by IRPQ

True. I only ever turned it over like 3 or 4 times to get my pressure for the tests.

I always hated those tests because if you found what you were looking for it meant bad news.

any news this afternoon?

Mr Twisty · 07-15-2013, 06:34 PM

PQ · 07-16-2013, 07:26 AM

Quote:

Originally Posted by zebra

please tell me you're asking another jason... i've only pulled an engine out of my truck & sure never tore into it. all i know is theory & hearsay

that's my question, too

fixed that for ya

any news this afternoon?

Nope. You're the Jason. haha

I'm thinking the pump just chewed it's self up. Started to wear and then wore to a bad level and just started to do that. I'd bet money I take it apart and find nothing. That metal in the filter definitely came from the pump because I bought a new pump and the gears mesh perfectly. So there was a lot of metal missing from the pump gear lobes.

Spent Monday looking for a reason not to pull the cam and put the engine back together. Had to bowl yesterday evening. Team is in first place so they want me there. (though I'm not sure why, my lower ab/groin pull is not healing)

Anyway. I have a busy week at work and a tournament to bowl this weekend. UGH................

07-15-2013, 06:34 PM	#4899
Mr Twisty Drives: the 2nd amendment home Join Date: May 2008 Location: OK Posts: 14,707	__________________ "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -- Benjamin Franklin

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07-12-2013, 12:44 PM	#4888
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	When the new cam went in were the bearings replaced?

07-12-2013, 01:30 PM	#4890
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	Disclaimer: I am not an engine expert. My best guess is you're losing pressure at the cam bearings. Maybe we can get an engine expert to weigh in.

07-12-2013, 02:04 PM	#4891
ssmike BL1ZZRD Drives: '16 Camaro 2SS, '20 Equinox Redline Join Date: Jul 2009 Location: Buffalo, NY Posts: 7,840	Just my opinion here but with that many miles I would think the engine could use a rebuild anyway! Especially with the Maggy on it and the way you downshift it has had a hard life! If you decide to pull the engine I would stroke it and use some forged internals, or replace the whole engine with an LSA crate or LS7 crate engine. Then sell the LS3 for the block and sell the Maggy to recoupe some cost! Edit: sell the L99 not LS3. Forgot you have an auto

07-12-2013, 02:37 PM	#4894
ssmike BL1ZZRD Drives: '16 Camaro 2SS, '20 Equinox Redline Join Date: Jul 2009 Location: Buffalo, NY Posts: 7,840	I hear ya! I'll be eager to see what you find inside! Good luck!

07-12-2013, 03:49 PM	#4896
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	Compression and leak down check are not related to the low oil pressure. If you find a low cylinder relative to the others it raises the possibility the debris in the oil pump or pan may have traveled and done other damage. Again, I am not an engine expert, but the minimal cranking required to do a compression test without any plugs in the car shouldn't do any damage.