Forced Induction Superchargers | Turbochargers | Intercoolers

LC9 leaking coolant past the head stud

Thread Tools
 
Search this Thread
 
Old May 24, 2023 | 04:21 PM
  #21  
GMCGreg's Avatar
TECH Enthusiast
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2020
Posts: 734
Likes: 209
Default

Originally Posted by The ******
Honestly, I'd go buy a cheap 5.3 long block and plug it in and keep going, you'll still have a boat load of fun with a stock 5.3, E85 and a billet 78mm turbo.
How did Terry offer to help?
I feel like he sold you a defective product and needs to make it right?
i agree , don't give up yet . Swap in a sbe and have some fun
Reply
Old May 24, 2023 | 07:12 PM
  #22  
n2xlr8n66's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Jun 2021
Posts: 352
Likes: 151
From: Gadsden
Default

Originally Posted by The ******
Honestly, I'd go buy a cheap 5.3 long block and plug it in and keep going, you'll still have a boat load of fun with a stock 5.3, E85 and a billet 78mm turbo.
How did Terry offer to help?
I feel like he sold you a defective product and needs to make it right?

I'm sure it would be fun, but I'm over working like that again- especially for a SBE LS.

Terry didn't sell me anything- he gave me most of the hard parts, plus his labor so I don't have a single complaint.

After all this went sideways (the first 3 times), he offered to build an iron block 5.7 for me. I declined his gracious offer.

He and I have been friends for 25 years, he stands by his stuff. I've seen him take it in the teeth when I would've told the customer to pound sand.


Originally Posted by GMCGreg
i agree , don't give up yet . Swap in a sbe and have some fun
Thanks for the kind words, but I'm at peace with my decision. If it doesn't sell, I'll light it on fire at some point after selling all the hard parts. Honestly.
My only regret is that I didn't start with a GM product to begin with, or put a turbo Coyote and Glide in it. Speaking of which: all I'd have to do is change the motor mounts, but I'm not even doing that.
Reply
Old May 25, 2023 | 11:52 AM
  #23  
Black_Sunshine_99's Avatar
TECH Junkie
10 Year Member
Community Builder
Liked
Community Favorite
iTrader: (11)
 
Joined: Mar 2013
Posts: 3,858
Likes: 840
From: Washington
Default

Originally Posted by n2xlr8n66
I'm sure it would be fun, but I'm over working like that again- especially for a SBE LS.

Terry didn't sell me anything- he gave me most of the hard parts, plus his labor so I don't have a single complaint.

After all this went sideways (the first 3 times), he offered to build an iron block 5.7 for me. I declined his gracious offer.

He and I have been friends for 25 years, he stands by his stuff. I've seen him take it in the teeth when I would've told the customer to pound sand.




Thanks for the kind words, but I'm at peace with my decision. If it doesn't sell, I'll light it on fire at some point after selling all the hard parts. Honestly.
My only regret is that I didn't start with a GM product to begin with, or put a turbo Coyote and Glide in it. Speaking of which: all I'd have to do is change the motor mounts, but I'm not even doing that.
Ah okay, I'm glad I didn't jump to any conclusions regarding Terry's integrity.
Vendors with that kind of integrity are hard to find, does he sell parts like cylinder heads online, would be good to have his info for others who may be interested in his products.
Reply
Old May 25, 2023 | 07:34 PM
  #24  
n2xlr8n66's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Jun 2021
Posts: 352
Likes: 151
From: Gadsden
Default

Originally Posted by The ******
Ah okay, I'm glad I didn't jump to any conclusions regarding Terry's integrity.
Vendors with that kind of integrity are hard to find, does he sell parts like cylinder heads online, would be good to have his info for others who may be interested in his products.
Terry's work is present in a lot of $$$$ builder's products, including vendors on this site. Call him- his cell number is on his website, Wilke's Performance dot net.
Billet LS / SBC / SBF shaft rocker arms, someone else's high dollar retainers, cylinder heads, CNC programs, builds, etc.
Reply
Old May 26, 2023 | 01:04 AM
  #25  
1FastBrick's Avatar
TECH Senior Member
15 Year Member
Liked
Loved
Community Favorite
iTrader: (16)
 
Joined: Apr 2007
Posts: 9,723
Likes: 629
From: JunkYard
Default

Originally Posted by n2xlr8n66
Thanks for the encouragement, brother. That's a good one I had not heard.

I hear you, I do. To run a recently assembled engine with Lucas assy lube in it for 8 minutes without oil is one thing- there was little damage at all, even to the dreaded cam bearings- but to run one like I did trying to figure out the coolant leak (it would run flawless up until ~160*)? No one is going to convince me all bearings are not trash. It's a boat anchor or coffee table.
So have you pulled the heads off and had them checked yet?
I just saw your For sale and and the build thread related to this thread...

You would be surprised. I just worked on a engine that the owner assumed had low oil pressure because of the O-ring pick up. Turns out it had a blown head gaskets and was mixing water. After swamping the head gaskets and a fresh oil change it was back up to 40PSI. No issues spotted in the old water contaminated oil or the oil filter.
Reply
Old May 26, 2023 | 03:48 PM
  #26  
Pro Stock John's Avatar
LS1Tech Co-Founder
20 Year Member
Community Influencer
iTrader: (34)
 
Joined: Nov 2001
Posts: 45,333
Likes: 1,768
From: Chicago, IL
Default

Terry could easily test the head(s) for you.
Reply
Old May 26, 2023 | 04:11 PM
  #27  
n2xlr8n66's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Jun 2021
Posts: 352
Likes: 151
From: Gadsden
Default

Originally Posted by Pro Stock John
Terry could easily test the head(s) for you.
Thanks fellas, but the heads have been tested twice.
Reply
Old May 26, 2023 | 04:45 PM
  #28  
Pro Stock John's Avatar
LS1Tech Co-Founder
20 Year Member
Community Influencer
iTrader: (34)
 
Joined: Nov 2001
Posts: 45,333
Likes: 1,768
From: Chicago, IL
Default

Darn well good luck.

Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old May 31, 2023 | 01:35 PM
  #29  
Pro Stock John's Avatar
LS1Tech Co-Founder
20 Year Member
Community Influencer
iTrader: (34)
 
Joined: Nov 2001
Posts: 45,333
Likes: 1,768
From: Chicago, IL
Default

I hope you don't give up on it. Sometimes it's good to take a break from the build.

I've had a lot of challenges with my '67 Camaro many of which I have not shared, burned up relays, really lousy brakes..
Reply
Old May 31, 2023 | 02:39 PM
  #30  
Black_Sunshine_99's Avatar
TECH Junkie
10 Year Member
Community Builder
Liked
Community Favorite
iTrader: (11)
 
Joined: Mar 2013
Posts: 3,858
Likes: 840
From: Washington
Default

Originally Posted by Pro Stock John
I hope you don't give up on it. Sometimes it's good to take a break from the build.

I've had a lot of challenges with my '67 Camaro many of which I have not shared, burned up relays, really lousy brakes..
I agree with John, don't make a rash decision, step away from it for a while and go do something else.
Like John I chased a couple very, very aggravating issues with my current car so I stopped messing with it for a full month.
Came back to it and figured it out within a few hours and kept moving forward.
It will all be worth it when you drive it and feel the boost come in, its a wonderful feeling for sure.
Reply
Old Jun 2, 2023 | 01:05 PM
  #31  
n2xlr8n66's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Jun 2021
Posts: 352
Likes: 151
From: Gadsden
Default

Originally Posted by Pro Stock John
I hope you don't give up on it. Sometimes it's good to take a break from the build.

I've had a lot of challenges with my '67 Camaro many of which I have not shared, burned up relays, really lousy brakes..
Oh yes- I've done that numerous times with this build, too many to count. Everything is paid for; as we say down South: "it's not eating nothin'".
If it sells, great. If it doesn't, I'll get to it when all my injuries heal and I've played a few (like 45-50) rounds of golf.

Originally Posted by The ******
I agree with John, don't make a rash decision, step away from it for a while and go do something else.
Like John I chased a couple very, very aggravating issues with my current car so I stopped messing with it for a full month.
Came back to it and figured it out within a few hours and kept moving forward.
It will all be worth it when you drive it and feel the boost come in, its a wonderful feeling for sure.
Dreading this build for the last 3 years, then being over it didn't come overnight; I'd call it wisdom. In 38 years of building (some of them really fast for their time) street cars, I've had my share of big issues- I've never "hated" a single one. Until this truck. I'll walk away for a long while. Andrew has already told me if I decide to come back to it we'll finish tuning it- but I seriously doubt I'll be coming back to it. I've built 4 cars in less time than I have in this truck, and it's just a "fun" toy.

I told my youngest daughter when she was taking accreditations a few years ago to remove her timeline: "remove the timeline, remove the stress associated with the task". Good advice from a Dad, huh? I've removed this particular timeline for 8 years, and I'm just sick of working my regular job, then working 10-12 hour days in the heat and cold on this project.

Thanks for the encouragement, fellas. I appreciate it.

Reply
Old Jun 5, 2023 | 09:38 PM
  #32  
n2xlr8n66's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Jun 2021
Posts: 352
Likes: 151
From: Gadsden
Default

Update:

In a moment of lucidity, I decided to clean the assembly lube and coolant from the area really well, pull the single head stud and run the water pump (the head is torqued- I just removed the one stud that the leak came from).

It didn't leak after 15 minutes of running the WP (recall that it would leak with no temp in the engine; all I had to do is run the WP, it would leak).

WP at full blast, no leak


I re-installed the stud, this time with teflon paste. No leak.

Stud installed finger tight with teflon paste, no leak. WP ON.


As soon as I put as little as 25 ft/lbs of torque on the stud, it leaked like a sieve.


Cracked head at the boss, just as most of you suggested (thanks for the input). 799 castings, NOT Castec.

Wilkes Performance is building another set of heads for me, so I'll at least get it tuned and make a few passes (you can bet your lunch money I'll send it).

Thanks for the great forum and advice- it's nice to know this was one thing I didn't goof up.
Reply
Old Jun 6, 2023 | 08:47 AM
  #33  
Black_Sunshine_99's Avatar
TECH Junkie
10 Year Member
Community Builder
Liked
Community Favorite
iTrader: (11)
 
Joined: Mar 2013
Posts: 3,858
Likes: 840
From: Washington
Default

Originally Posted by n2xlr8n66
Update:

In a moment of lucidity, I decided to clean the assembly lube and coolant from the area really well, pull the single head stud and run the water pump (the head is torqued- I just removed the one stud that the leak came from).

It didn't leak after 15 minutes of running the WP (recall that it would leak with no temp in the engine; all I had to do is run the WP, it would leak).

WP at full blast, no leak


I re-installed the stud, this time with teflon paste. No leak.

Stud installed finger tight with teflon paste, no leak. WP ON.


As soon as I put as little as 25 ft/lbs of torque on the stud, it leaked like a sieve.


Cracked head at the boss, just as most of you suggested (thanks for the input). 799 castings, NOT Castec.

Wilkes Performance is building another set of heads for me, so I'll at least get it tuned and make a few passes (you can bet your lunch money I'll send it).

Thanks for the great forum and advice- it's nice to know this was one thing I didn't goof up.
Well done!
This had me smiling ear to ear, can't wait to hear about the drive!
Reply
Old Jun 7, 2023 | 01:05 PM
  #34  
RonSSNova's Avatar
8 Second Club
10 Year Member
Photogenic
Photoriffic
Top Answer: 1
iTrader: (3)
 
Joined: Aug 2011
Posts: 4,729
Likes: 814
From: Portland, OR
Default

Ah ha! That's all I'll say. :-)
Those cracks can be welded, but likely pretty tricky.

Older YT rockers? They look skinny compared to the latest and greatest. Just curious, as I had several of those fail on my vette.
Reply
Old Jun 7, 2023 | 03:41 PM
  #35  
n2xlr8n66's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Jun 2021
Posts: 352
Likes: 151
From: Gadsden
Default

Originally Posted by RonSSNova
Ah ha! That's all I'll say. :-)
Those cracks can be welded, but likely pretty tricky.

Older YT rockers? They look skinny compared to the latest and greatest. Just curious, as I had several of those fail on my vette.
I know, right? Thanks for the help (again), @RonSSNova When I get them pulled, we're going to jack up the heat and pressure on the tester (probably 70psi or more). Needless to say, I was floored it was the heads.

No welding when there are a couple hundred 243/799 castings laying around

Maybe? They are the YT6645 model listed on their website. I'm not too concerned; if they break, I'll put a set of Wilke's billet versions on- the only reason I didn't to begin with is I'm not running a lot of spring pressure or rpm.

Reply
Old Jun 7, 2023 | 06:46 PM
  #36  
RonSSNova's Avatar
8 Second Club
10 Year Member
Photogenic
Photoriffic
Top Answer: 1
iTrader: (3)
 
Joined: Aug 2011
Posts: 4,729
Likes: 814
From: Portland, OR
Default

I had a bad set of those. They fixed it later. And I had 420 lb open springs.
The very latest 6645 are fat. I have them on the C5 still due to the AFR heads.
Reply
Old Jun 10, 2023 | 10:27 PM
  #37  
1FastBrick's Avatar
TECH Senior Member
15 Year Member
Liked
Loved
Community Favorite
iTrader: (16)
 
Joined: Apr 2007
Posts: 9,723
Likes: 629
From: JunkYard
Default

I am glad to see your back at it!!!
Reply




All times are GMT -5. The time now is 01:59 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE