Exhaust "Blat"

Reply Subscribe

Thread Tools

Search this Thread

Jul 24, 2006 | 01:13 PM

AerostarDad

Thread Starter

Tuned

Joined: Jan 2004

Posts: 325

Likes: 1

From: B.C.Canada, EH?

Exhaust "Blat"

Ok guys...'78 Ford 460,rv-type cam,true dual exhaust. I'm getting a real annoying exhaust "blat,blat,blat" when accelerating at half throttle or more. Is there any way of getting rid of it or ,at least, toning it down?

Thanks

Jul 24, 2006 | 06:44 PM

RangerPilot

Post Fiend

Joined: Jul 2005

Posts: 8,462

Likes: 4

From: Durant, OK (SOSU)

Sounds like a typical exhaust leak. Start the truck and carefully search under it from front to back, looking especially around the gaskets if any exist.

RP
Zach

Jul 24, 2006 | 08:02 PM

mike2112

Senior User

Joined: Jul 2005

Posts: 143

Likes: 0

From: Norman, OK

If you've got headers, I'd check those gaskets first. They are always leaking.

Jul 24, 2006 | 10:16 PM

AerostarDad

Thread Starter

Tuned

Joined: Jan 2004

Posts: 325

Likes: 1

From: B.C.Canada, EH?

I'm running stock manifolds.

I'll check for leaks

Thanks all

If there are no leaks,whats the next step?

Jul 25, 2006 | 04:10 PM

RangerPilot

Post Fiend

Joined: Jul 2005

Posts: 8,462

Likes: 4

From: Durant, OK (SOSU)

Small holes in the exhaust. A tiny hole on my buddy's S-10 made a very noticeable noise. After that you go into actual engine things that could be causing it.

RP
Zach

Oct 1, 2006 | 12:27 AM

AerostarDad

Thread Starter

Tuned

Joined: Jan 2004

Posts: 325

Likes: 1

From: B.C.Canada, EH?

Well,thought I'd update y'all on my exhaust problems.

I just got an "X" pipe installed and,man did that ever clear up the "blat" problem. She sounds real smooth now,quieter with no "rapping" out the tailpipes. I'd recommend this to anyone who hates the "50's hot-rod sound" that the 460 makes when using a true dual exhaust sytem.

Thanks to all who had suggestions and tips!