Video: Coolant leaking from Header Bolts
Thread Starter
TECH Fanatic
iTrader: (1)
Joined: Apr 2003
Posts: 1,887
Likes: 0
From: Corpus Christi, TX
Video: Coolant leaking from Header Bolts http://ccstreetscene.com/multimedia/.../leakyhead.wmv
I pulled my headers today, and the driver side started leaking a pretty good amount of antifreeze out from the header bolt holes. In the video, I had my dad squeeze the coolant line so you could see it coming out. The engine is a 6.0L LQ4 with stock #317 6.0L heads.
Its just leaking from 3 center holes...
What would cause somthing like that?
Any advice would be greatly appreciated!
I pulled my headers today, and the driver side started leaking a pretty good amount of antifreeze out from the header bolt holes. In the video, I had my dad squeeze the coolant line so you could see it coming out. The engine is a 6.0L LQ4 with stock #317 6.0L heads.
Its just leaking from 3 center holes...
What would cause somthing like that?
Any advice would be greatly appreciated!
Last edited by Deckhand; May 12, 2007 at 06:54 PM.
I've seen this before from a set of 243's. It's caused from the bolt holes being drilled to deep which enters the cooling passage. Shouldn't cause any problems as long as the bolts are in. It sure makes a mess though when you take the bolts out. We ran a car for two seasons without any leaks.
317 heads I have repaired numerous broken exhaust manifold bolts on the trucks. Some I have had to drill out, in doing so, went a little deep, and broke through into the coolant passage. Liquid teflon on the bolt and back into service. Never seen a problem with it. And believe me if there was a problem I would hear about it.
Don't waste your time on it, there is no fix - short of welding up the hole and redrilling and tapping it or replacing the head.
Don't waste your time on it, there is no fix - short of welding up the hole and redrilling and tapping it or replacing the head.
Trending Topics
TECH Resident
Joined: Jan 2003
Posts: 855
Likes: 0
From: AUSTIN TX
Liquid teflon, silicone, 3M wetherstrip adhesive, any of those will solve your problem. It is not uncommon to have threaded holes that screw into waterjackets. Hell, all of the oem small block chevy headbolts do.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
