C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Need help identifying broken part

Thread Tools
 
Search this Thread
 
Old May 27, 2011 | 11:47 PM
  #1  
81zzcratevette's Avatar
81zzcratevette
Thread Starter
7th Gear
 
Joined: Sep 2009
Posts: 7
Likes: 0
Default Need help identifying broken part

I have an 81' corvette with what we were told a ZZ4 crate engine. It's been neglected for quite some time and I'm just now getting back into things.

I opened the hood up and found a rubber hose that seemed to have broken off from another part. I hope you can see what I'm talking about in the picture (circled in blue).

What is this part? And exactly what can it cause trouble with? I appreciate your help in advance, thank you!

Reply
Old May 28, 2011 | 01:23 AM
  #2  
RJ80's Avatar
RJ80
Intermediate
10 Year Member
 
Joined: Nov 2008
Posts: 26
Likes: 0
Default

Originally Posted by 81zzcratevette
I have an 81' corvette with what we were told a ZZ4 crate engine. It's been neglected for quite some time and I'm just now getting back into things.

I opened the hood up and found a rubber hose that seemed to have broken off from another part. I hope you can see what I'm talking about in the picture (circled in blue).

What is this part? And exactly what can it cause trouble with? I appreciate your help in advance, thank you!

There is a hose that goes from the check valve (circled in your picture) to the A.I.R. system diverter valve that is bolted to the A.I.R. pump (ie smog pump). Doesn't look like you have a smog pump in the picture. It appears the check valve hose connection has been cut off and plugged to prevent a underhood exhaust leak (the check valves do not seal that well).

Last edited by RJ80; May 28, 2011 at 01:40 AM.
Reply
Old May 28, 2011 | 01:44 AM
  #3  
RJ80's Avatar
RJ80
Intermediate
10 Year Member
 
Joined: Nov 2008
Posts: 26
Likes: 0
Default

It actually looks like the P.O. may have just connected the two sides together at one time. At least I hope that hose running from the passenger check valve is just hanging loose and not actually connected to the driver side valve cover!
Reply
Old May 28, 2011 | 08:28 AM
  #4  
Paul L's Avatar
Paul L
Team Owner
15 Year Member
 
Joined: Aug 1999
Posts: 30,995
Likes: 99
From: Ontario
Default

If you can get away without having an AIR pump in your area I would remove and discard that long hose, remove the diverter valves on both sides (they are threaded on), and plug the valve inlets on the exhaust manifolds.
Reply

Get notified of new replies

To Need help identifying broken part





All times are GMT -4. The time now is 03:44 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-8
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-9
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE