C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Plenum fittings - sealant?

Thread Tools
 
Search this Thread
 
Old May 29, 2007 | 06:49 PM
  #1  
ghlkal's Avatar
ghlkal
Thread Starter
Safety Car
Supporting Lifetime Gold
20 Year Member
Community Builder
Community Favorite
Top Answer: 3
 
Joined: Mar 2005
Posts: 4,467
Likes: 1,223
From: Fredonia WI
2025 Corvette of the Year Finalist - Unmodified
2024 C7 of the Year Winner - Unmodified
2023 C4 of the Year Finalist- Modified
2020 C4 of the Year Finalist - Modified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
Default Plenum fittings - sealant?

When I removed the vacuum fittings on the plenum (87 L98), there was "gunk" on the threads. I can't tell if this is just 20 years worth of stuff or should I use something on the threads when I put them back in?

TIA,

Gary
Reply
Old May 29, 2007 | 06:57 PM
  #2  
rel3rd's Avatar
rel3rd
Burning Brakes
15 Year Member
 
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
Default

I put sealer on any threads that seal any type liquid or vacuum.

Very cheap insurance...
Reply
Old May 29, 2007 | 07:01 PM
  #3  
Aardwolf's Avatar
Aardwolf
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2004
Posts: 13,960
Likes: 707
From: WI
Default

Originally Posted by ghlkal
When I removed the vacuum fittings on the plenum (87 L98), there was "gunk" on the threads. I can't tell if this is just 20 years worth of stuff or should I use something on the threads when I put them back in?

TIA,

Gary
I did. I had to clean some of that off to. The stuff is so old and hard that it obstructs the threads. How's it going? I used Teflon pipe thread sealant, high temp for autos.
Reply
Old May 29, 2007 | 07:38 PM
  #4  
RRT vette's Avatar
RRT vette
Le Mans Master
15 Year Member
 
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Default

Originally Posted by rel3rd
I put sealer on any threads that seal any type liquid or vacuum.

Very cheap insurance...
Reply
Old May 29, 2007 | 11:23 PM
  #5  
ghlkal's Avatar
ghlkal
Thread Starter
Safety Car
Supporting Lifetime Gold
20 Year Member
Community Builder
Community Favorite
Top Answer: 3
 
Joined: Mar 2005
Posts: 4,467
Likes: 1,223
From: Fredonia WI
2025 Corvette of the Year Finalist - Unmodified
2024 C7 of the Year Winner - Unmodified
2023 C4 of the Year Finalist- Modified
2020 C4 of the Year Finalist - Modified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
Default

Thanks for the responses, guys.

Originally Posted by Aardwolf
How's it going? I used Teflon pipe thread sealant, high temp for autos.
Is this different from "normal" teflon tape? Where'd you get it?

Andrew, I'm going to "invite" you over next week (there's a wedding this weekend ) and have you give us some pointers ...


Gary
Reply
Old May 30, 2007 | 10:34 AM
  #6  
Aardwolf's Avatar
Aardwolf
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2004
Posts: 13,960
Likes: 707
From: WI
Default

Sounds like fun! Just let me know when.

The normal teflon sealant does not say for high temp. so I always used the tube that says high temp. for automotive use. Fleet and NAPA should have it. I can bring some with if you still need it, a large tube lasts forever. Many other bolts get locktite or never seize, some do not get anything so as to have a ground.
Reply

Get notified of new replies

To Plenum fittings - sealant?





All times are GMT -4. The time now is 02:37 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE