The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-17-2015, 11:47 PM   #1
Daaaanz67
Registered User
 
Join Date: Nov 2011
Location: Idaho
Posts: 857
Well Crapp!

My exhaust manifolds came down with measles. Actually after 3 years on my LS conversion the ceramic coating has failed on my Hooker manifolds. They were actually black when I first purchased them and eventually turned gray. That was my first disappointment of coarse so just a warning don't order the black unless you want gray. Other then the color and the crapy coating I still like the fit and construction. Now I've got to pull them off for a recoat and hope I don't snap any bolts. I did use antisieze when installed. Anyone else have this problem.
Daaaanz67 is offline   Reply With Quote
Old 02-18-2015, 12:26 AM   #2
LockDoc
The Older Generation


 
LockDoc's Avatar
 
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,779
Re: Well Crapp!

Quote:
Originally Posted by Daaaanz67 View Post
My exhaust manifolds came down with measles. Actually after 3 years on my LS conversion the ceramic coating has failed on my Hooker manifolds. They were actually black when I first purchased them and eventually turned gray. That was my first disappointment of coarse so just a warning don't order the black unless you want gray. Other then the color and the crapy coating I still like the fit and construction. Now I've got to pull them off for a recoat and hope I don't snap any bolts. I did use antisieze when installed. Anyone else have this problem.

I just purchased a set but I got the un-coated ones. I am going to try the POR manifold paint on them. Did you temper or "cure" them as stated in the instruction sheet that came with them? Sounded kind of involved to me.....

LockDoc
__________________
Leon

Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles

(My Dually Pickup Project Thread)

http://67-72chevytrucks.com/vboard/s...d.php?t=829820

-
LockDoc is offline   Reply With Quote
Old 02-18-2015, 12:36 AM   #3
MalibuSSwagon
Registered User
 
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
Re: Well Crapp!

I bought some used F-body manifolds for my swap and I'm going to try out the POR manifold paint as well.
MalibuSSwagon is offline   Reply With Quote
Old 02-18-2015, 01:53 AM   #4
Daaaanz67
Registered User
 
Join Date: Nov 2011
Location: Idaho
Posts: 857
Re: Well Crapp!

Quote:
Originally Posted by LockDoc View Post
I just purchased a set but I got the un-coated ones. I am going to try the POR manifold paint on them. Did you temper or "cure" them as stated in the instruction sheet that came with them? Sounded kind of involved to me.....

LockDoc
Yes heat cycled them.
Daaaanz67 is offline   Reply With Quote
Old 02-18-2015, 01:55 AM   #5
Daaaanz67
Registered User
 
Join Date: Nov 2011
Location: Idaho
Posts: 857
Re: Well Crapp!

I have that por heat paint maybe I should try that first before paying someone to recoat. How do I remove this ceramic coating?
Daaaanz67 is offline   Reply With Quote
Old 02-18-2015, 02:34 AM   #6
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Well Crapp!

The only coating I've ever see hold up is the o.g. jet-hot coatings.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 02-18-2015, 08:33 AM   #7
homemade87
Registered User
 
Join Date: Apr 2010
Location: Guntersville Alabama
Posts: 1,073
Re: Well Crapp!

Quote:
Originally Posted by Daaaanz67 View Post
My exhaust manifolds came down with measles. Actually after 3 years on my LS conversion the ceramic coating has failed on my Hooker manifolds. They were actually black when I first purchased them and eventually turned gray. That was my first disappointment of coarse so just a warning don't order the black unless you want gray. Other then the color and the crapy coating I still like the fit and construction. Now I've got to pull them off for a recoat and hope I don't snap any bolts. I did use antisieze when installed. Anyone else have this problem.
Just a note on the header bolts . Do yourself a favor, get a set of arp stainless header bolts to replace the oem ones . All it takes is one to brake off to make a bad day . Since you are taking them out anyway . For $50.00 its not worth to trouble . Its not if , its when they will snap off . These things snap the head off under thermal expansion . You will look under your hood one day and see a couple bolt heads have popped off . It has happened to me on my tbss that was factory installed .

http://www.jegs.com/i/ARP/070/434-1202/10002/-1

Last edited by homemade87; 02-18-2015 at 08:41 AM.
homemade87 is offline   Reply With Quote
Old 02-18-2015, 11:39 AM   #8
Wasted Income
Boosted Member
 
Wasted Income's Avatar
 
Join Date: May 2002
Location: Mackinaw, IL
Posts: 2,200
Re: Well Crapp!

I've had really good luck with the VHT ceramic flameproof black paint. It's been holding up on my turbo hot-pipes for a couple years now...and they get WAY hot.

__________________
1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq
1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift
1964 Buick Skylark Twin TURBO 383 LS pro-touring project
2014 VW Passat TDI - Daily Driver
Turbo diesel
2015 Sierra Denali HD Duramax Turbo diesel
2023 Ford Explorer ST - Twin Turbskis
2023 Ford F150 RCSB - Whipple Supercharged
2017 Polaris RZR Turbo
2014 Nor-Tech Center Console - Twin Supercharged Outboards

TURBO ALL THE THINGS!!
Wasted Income is offline   Reply With Quote
Old 02-18-2015, 02:20 PM   #9
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Well Crapp!

Is that the stuff that you HAVE to run HOT right after you paint it so it bakes on?
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 02-18-2015, 02:38 PM   #10
JNJchev77
Registered Cruiser
 
JNJchev77's Avatar
 
Join Date: Mar 2010
Location: Mesa, AZ
Posts: 918
Re: Well Crapp!

Quote:
Originally Posted by BR3W CITY View Post
Is that the stuff that you HAVE to run HOT right after you paint it so it bakes on?
Yes, but you can bake it in the oven initially and then cycle once they're on the motor. That's what I used and did the baking before cycling on the motor. Stuff works great, still going strong going on two years now.
__________________
77' Chevy SB
Dropmembered Front and Rear
5.3/4l60e combo
JNJchev77 is offline   Reply With Quote
Old 02-18-2015, 03:53 PM   #11
Wasted Income
Boosted Member
 
Wasted Income's Avatar
 
Join Date: May 2002
Location: Mackinaw, IL
Posts: 2,200
Re: Well Crapp!

I use a propane torch to cure it in between coats. Has held up better than the high dollar "ceramic" coating I had on the turbine...
__________________
1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq
1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift
1964 Buick Skylark Twin TURBO 383 LS pro-touring project
2014 VW Passat TDI - Daily Driver
Turbo diesel
2015 Sierra Denali HD Duramax Turbo diesel
2023 Ford Explorer ST - Twin Turbskis
2023 Ford F150 RCSB - Whipple Supercharged
2017 Polaris RZR Turbo
2014 Nor-Tech Center Console - Twin Supercharged Outboards

TURBO ALL THE THINGS!!
Wasted Income is offline   Reply With Quote
Old 02-18-2015, 04:26 PM   #12
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Well Crapp!

Quote:
Originally Posted by Wasted Income View Post
"ceramic" coating I had on the turbine...
Thought that was a snake-oil thing they tried back in the GN days (At least the actual impeller being coated). Sooo, did it eat the turbine?
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 02-18-2015, 04:54 PM   #13
Wasted Income
Boosted Member
 
Wasted Income's Avatar
 
Join Date: May 2002
Location: Mackinaw, IL
Posts: 2,200
Re: Well Crapp!

Sorry I should have been more specific. I meant the turbine housing...not the turbine wheel. lol
__________________
1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq
1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift
1964 Buick Skylark Twin TURBO 383 LS pro-touring project
2014 VW Passat TDI - Daily Driver
Turbo diesel
2015 Sierra Denali HD Duramax Turbo diesel
2023 Ford Explorer ST - Twin Turbskis
2023 Ford F150 RCSB - Whipple Supercharged
2017 Polaris RZR Turbo
2014 Nor-Tech Center Console - Twin Supercharged Outboards

TURBO ALL THE THINGS!!
Wasted Income is offline   Reply With Quote
Old 02-18-2015, 05:43 PM   #14
Daaaanz67
Registered User
 
Join Date: Nov 2011
Location: Idaho
Posts: 857
Re: Well Crapp!

Quote:
Originally Posted by homemade87 View Post
Just a note on the header bolts . Do yourself a favor, get a set of arp stainless header bolts to replace the oem ones . All it takes is one to brake off to make a bad day . Since you are taking them out anyway . For $50.00 its not worth to trouble . Its not if , its when they will snap off . These things snap the head off under thermal expansion . You will look under your hood one day and see a couple bolt heads have popped off . It has happened to me on my tbss that was factory installed .

http://www.jegs.com/i/ARP/070/434-1202/10002/-1
I thought that stainless and aluminum was a bad mixture, or was that stainless and cast iron.
Hey wasted when you cure with the torch, do you just spray again or re-wipe down the manifolds in between coats. This sounds like a good idea.
Daaaanz67 is offline   Reply With Quote
Old 02-18-2015, 07:37 PM   #15
LockDoc
The Older Generation


 
LockDoc's Avatar
 
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,779
Re: Well Crapp!

-
Here's what member Low Elco said about the POR manifold paint....

"Also, POR makes a manifold gray that works great. Almost a year on ours, looks like the day they got painted."

LockDoc
__________________
Leon

Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles

(My Dually Pickup Project Thread)

http://67-72chevytrucks.com/vboard/s...d.php?t=829820

-
LockDoc is offline   Reply With Quote
Old 02-18-2015, 07:57 PM   #16
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Well Crapp!

Quote:
Originally Posted by Daaaanz67 View Post
I thought that stainless and aluminum was a bad mixture, or was that stainless and cast iron.
Hey wasted when you cure with the torch, do you just spray again or re-wipe down the manifolds in between coats. This sounds like a good idea.
SS and Al is a contact corrosion. There are other metals that will have a similar reaction but need to be in the presence of an alkali (like road salt) to actually have a problem.

The exh bolt issue is related to the different expansion of the aluminum heads on those bolts. ARP bolts/studds won't break off. You can use anti seize on any of them to help the problem.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 02-18-2015, 08:50 PM   #17
Wasted Income
Boosted Member
 
Wasted Income's Avatar
 
Join Date: May 2002
Location: Mackinaw, IL
Posts: 2,200
Re: Well Crapp!

Quote:
Originally Posted by Daaaanz67 View Post
Hey wasted when you cure with the torch, do you just spray again or re-wipe down the manifolds in between coats. This sounds like a good idea.
Just let 'er eat with the torch....let it cool...hit it again with another coat. Couldn't be easier.

I was curious about the truthfullness of the "flameproof" name. Yep. Can't burn it off.
__________________
1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq
1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift
1964 Buick Skylark Twin TURBO 383 LS pro-touring project
2014 VW Passat TDI - Daily Driver
Turbo diesel
2015 Sierra Denali HD Duramax Turbo diesel
2023 Ford Explorer ST - Twin Turbskis
2023 Ford F150 RCSB - Whipple Supercharged
2017 Polaris RZR Turbo
2014 Nor-Tech Center Console - Twin Supercharged Outboards

TURBO ALL THE THINGS!!
Wasted Income is offline   Reply With Quote
Old 02-18-2015, 09:13 PM   #18
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: Well Crapp!

Quote:
Originally Posted by Daaaanz67 View Post
I thought that stainless and aluminum was a bad mixture, or was that stainless and cast iron.
ARP chrome moly bolts are just as good, Part# 134-1102 (For 3/8" flange), In fact I bet the yield strength is better than stainless.
clinebarger is offline   Reply With Quote
Old 02-18-2015, 10:00 PM   #19
MalibuSSwagon
Registered User
 
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
Re: Well Crapp!

You can buy 100 of the 8mmx1.25 25mm in class 10.9 zinc coated for $25 on ebay or at a fastener store. Why should I spend more than that for only 12 bolts?
MalibuSSwagon is offline   Reply With Quote
Old 02-18-2015, 11:19 PM   #20
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: Well Crapp!

Quote:
Originally Posted by MalibuSSwagon View Post
You can buy 100 of the 8mmx1.25 25mm in class 10.9 zinc coated for $25 on ebay or at a fastener store. Why should I spend more than that for only 12 bolts?
On LS engines, ARP exhaust manifold bolts are worth every penny! I have seen to many pop the heads off 10.9 grade bolts.
clinebarger is offline   Reply With Quote
Old 02-19-2015, 12:54 AM   #21
Daaaanz67
Registered User
 
Join Date: Nov 2011
Location: Idaho
Posts: 857
Re: Well Crapp!

Quote:
Originally Posted by clinebarger View Post
ARP chrome moly bolts are just as good, Part# 134-1102 (For 3/8" flange), In fact I bet the yield strength is better than stainless.
Thanks Cline I'll look into those bolts also.
Daaaanz67 is offline   Reply With Quote
Old 02-19-2015, 01:22 AM   #22
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Well Crapp!

Quote:
Originally Posted by MalibuSSwagon View Post
You can buy 100 of the 8mmx1.25 25mm in class 10.9 zinc coated for $25 on ebay or at a fastener store. Why should I spend more than that for only 12 bolts?
How long will it take you to pull all of those out of the head, one-by-one? I place at least a few $$ on my sanity and my fingers.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 02-19-2015, 04:18 AM   #23
ls1nova71
Registered User
 
ls1nova71's Avatar
 
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
Re: Well Crapp!

I thought thats how you tell how many miles are on an engine, the outer bolts pop off right at around 100k....
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10
http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 02-19-2015, 01:53 PM   #24
Daaaanz67
Registered User
 
Join Date: Nov 2011
Location: Idaho
Posts: 857
Re: Well Crapp!

Can anyone recommend on how to prep these if I choose to spray with VHT.
Daaaanz67 is offline   Reply With Quote
Old 02-19-2015, 03:18 PM   #25
MalibuSSwagon
Registered User
 
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
Re: Well Crapp!

Quote:
Originally Posted by ls1nova71 View Post
I thought thats how you tell how many miles are on an engine, the outer bolts pop off right at around 100k....
Thats true, my Dad's 2000 Silverado has some broken bolts I have to fix, it's got 110k on it now.
MalibuSSwagon is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:54 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com