Bad motor? - LS1TECH - Camaro and Firebird Forum Discussion

Notices
Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Bad motor?

 
Old 03-13-2019, 04:41 PM
  #1  
Registered User
Thread Starter
 
Join Date: Mar 2019
Posts: 5
Default Bad motor?

Just pulled this LS6 with 862 heads for my c10 project truck yesterday. The coloration in the passenger side head concerns me....

Does the brown look normal for years of sitting? Or does this look like a probable blown head gasket/over heating issue?

Oil doesnít look milky, coolant was brown but looks more like rust from sitting coolant than oil mix. PCM had the same color coating on it before I dusted it off. It almost looks like rust dust.

Havenít had a chance to start it yet.



Last edited by ck_32; 03-13-2019 at 08:14 PM.
ck_32 is online now  
Old 03-13-2019, 07:52 PM
  #2  
11 Second Club
iTrader: (1)
 
01CamaroSSTx's Avatar
 
Join Date: Feb 2015
Location: Texas
Posts: 821
Default

I think your right about the rust-n-dust!
01CamaroSSTx is online now  
Old 03-13-2019, 09:56 PM
  #3  
TECH Senior Member
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 9,365
Default

Originally Posted by 01CamaroSSTx View Post
I think your right about the rust-n-dust!
LS6's are aluminum block and heads. WHERE is the rust coming from??
862's aren't the old iron heads are they? Not that I've seen..

Last edited by G Atsma; 03-13-2019 at 10:05 PM.
G Atsma is online now  
Old 03-13-2019, 10:12 PM
  #4  
Registered User
Thread Starter
 
Join Date: Mar 2019
Posts: 5
Default

Itís a truck motor. Itís a L59 which is the iron block ďtruckĒ version of the LS6.

And no 862ís are alumni heads. But this is on a iron truck block. But Iíve still never seen alumi heads rust like this. I really want to get it started this week. Iíve got a 30 day warranty if itís a bust motor.

Even other truck iron blocks the heads are never this color.
ck_32 is online now  
Old 03-13-2019, 10:28 PM
  #5  
TECH Senior Member
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 9,365
Default

What threw me off was calling it an LS6, which came only in Corvettes and CTS-V's
There is no truck version of the LS6, as that is a 5.7 engine and this is a 5.3. 5.3's ONLY came in trucks with the only exception of the LS4, a Gen IV 5.3 that came in FWD cars and won't go into anything else.
G Atsma is online now  
Old 03-14-2019, 06:26 AM
  #6  
TECH Fanatic
iTrader: (1)
 
Che70velle's Avatar
 
Join Date: Jan 2012
Location: Dawsonville Ga.
Posts: 1,897
Default

Looks like baked on mud to me.
Che70velle is online now  
Old 03-14-2019, 08:00 AM
  #7  
On The Tree
 
Join Date: Mar 2011
Location: Waterford, MI
Posts: 108
Default

I'm with Che77velle, looks like mud. Can you see it on the side of the block and other components in the area too or is it confined to the head only?
drdave88 is offline  
Old 03-14-2019, 08:46 AM
  #8  
Teching In
 
Join Date: Feb 2019
Location: Wyoming
Posts: 22
Default

What part of the country is the motor from? It looks like just some baked on dust to me? Coolant would corrode the aluminum and leave white stains with a little crystalization.
Jgaines8679 is offline  
Old 03-14-2019, 09:02 AM
  #9  
Registered User
Thread Starter
 
Join Date: Mar 2019
Posts: 5
Default

This is the US, it could be mud. Possibly went off roading but it was just a 2wd Tahoe. So who knows.

This was the only spot I see this tho. This color is mainly in the front and fades as it goes to the back of the head. The rest of the block is covered in oil like most 150k+ motors. Ok you guys have me hope. Hopefully tonight Iím going to turn the engine by hand. Then try and get it started this weekend. See how it goes.

Iíll snag more 360 pics today to see if that helps anything.
ck_32 is online now  
Old 03-14-2019, 09:06 AM
  #10  
Restricted User
 
Join Date: Mar 2014
Location: Ohio
Posts: 6,695
Default

That's not rust. Your radiator hose doesn't rust.

The L59 isn't the anything version of an LS6.
JoeNova is offline  
Old 03-14-2019, 09:09 AM
  #11  
12 Second Club
iTrader: (26)
 
ss4chad's Avatar
 
Join Date: Nov 2005
Location: Keller, TX
Posts: 673
Default

I say it is/was a coolant leak with dirty coolant. Soak it with Purple Power and wash it and I bet it will shine like a diamond in a goats ***!

Chad
ss4chad is offline  
Old 03-14-2019, 10:45 AM
  #12  
TECH Senior Member
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 9,365
Default

Originally Posted by JoeNova View Post
The L59 isn't the anything version of an LS6.
I tried telling him that. He PM'd me on it. I explained that the LS6 came out AFTER all the truck engines did, so this was not a "truck LS6".
G Atsma is online now  
Old 03-14-2019, 11:31 AM
  #13  
Registered User
Thread Starter
 
Join Date: Mar 2019
Posts: 5
Default

Originally Posted by ss4chad View Post
I say it is/was a coolant leak with dirty coolant. Soak it with Purple Power and wash it and I bet it will shine like a diamond in a goats ***!

Chad
Actually thatís a great point! The rad hoses had increadably rusty residue caked inside them. I think you nailed it with that guess.

That makes the most sense and matches the color on the header exactly. Thatís also the side the coolant hoses bypass across the block to the rad! Also looks to have a DIY aftermarket rad hose repair right in that area as well.

Going to give it a solution bath and light power wash and see how she comes off.
ck_32 is online now  
Old 03-14-2019, 11:37 AM
  #14  
TECH Junkie
iTrader: (40)
 
00pooterSS's Avatar
 
Join Date: Mar 2008
Location: Dallas
Posts: 3,325
Default

Mud and dirt or it had a really rusted cooling system from not keeping up with coolant changes and someone let the rusty coolant fly all over the motor. Which popping off hoses would get it on that side of the engine.

OP, you really should read up on LS6's so that you know that there is nothing out there that is a "LS6" version of something. The LS6 is unique in several ways that no other gen 3 engine is like. ESPECIALLY a truck motor. Not trying to beat a dead horse over it, it's just cool to know what an LS6 is and what makes it special amongst all gen 3's
00pooterSS is offline  
 


Thread Tools
Search this Thread

About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: