LG 1 7/8 Header- X Pipe install
Thread Starter
Advanced
Joined: May 2013
Posts: 75
Likes: 0
From: League City Texas
LG 1 7/8 Header- X Pipe install
So I installed the LG pro 1/78 Headers on the car... was a bit of a pain in the garage but got it. Actually had to take the passenger side motor mount loose and jack the motor up a few inches to get it to slide in. Now I am having issues with the x-pipe. The x-pipe is a full 3 inch set-up, the cats slide onto the headers no problem but can't get the x-pipe to slide onto the cats on either side of the x pipe. It's like the I.D (inside diameter) of the pipes don't match up with the O.D. (outside diameter). Anyone else come across this issue? Any ideas on how I can widen the slotted pipe that slips over the other pipe... trying to avoid taking it in but might have too. Thanks guys
Drifting
Joined: Mar 2011
Posts: 1,448
Likes: 56
From: Bath NC
I had the same issue. Leave everything loose until teh job is 100% installed.
I used a hammer and an anvil and opened up the front X pipe openings just on the very forward edge. Then it all went together. Run a file around the od of the cat pipe and id of the X pipe to create a wedge affect to help it start. Spray WD 40 on it so it moves easy
I used a hammer and an anvil and opened up the front X pipe openings just on the very forward edge. Then it all went together. Run a file around the od of the cat pipe and id of the X pipe to create a wedge affect to help it start. Spray WD 40 on it so it moves easy
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Never had issues and I've had mine on and off 10+ times. Harbor freight has pipe expanders if you really need but I only found that needed if I tightened them way down. Get a 3" pipe expander from HF and just open the joints up slightly if you need.
Something like this, they have several sizes
http://www.harborfreight.com/tail-pi...der-69550.html
Something like this, they have several sizes
http://www.harborfreight.com/tail-pi...der-69550.html
Thread Starter
Advanced
Joined: May 2013
Posts: 75
Likes: 0
From: League City Texas
Awesome... thanks for the reply guys.
I'll get it on somehow or another... Also did you guys run cats as well? LG shows the X pipe ran in the narrow valley under the tunnel plate and looks like they just kept the rear o2s plugged? Did you guys do the same
I'll get it on somehow or another... Also did you guys run cats as well? LG shows the X pipe ran in the narrow valley under the tunnel plate and looks like they just kept the rear o2s plugged? Did you guys do the same
Thread Starter
Advanced
Joined: May 2013
Posts: 75
Likes: 0
From: League City Texas
Got the X pipe on with some force and wd-40.... was a two man job for sure. Drove the car open x piped with high flow cats. Loud as all hell. But fun. Thanks for the help guys. I Appreciate it
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Le Mans Master
Joined: Jan 2008
Posts: 7,155
Likes: 44
From: If you wanna live life on your own terms, you gotta be willing to crash and burn Florida
Let us know the results. Post some pictures! I put on shorties on my C5, but I have longtubes waiting to go on, but I'm getting that professionally done. I wouldn't know what to do if something went wrong.