Headers/H-Pipe but strange sound
05-26-2009, 10:01 AM
#1
2nd Gear Member
Thread Starter
Join Date: Jul 2007
Location: Illinois
Posts: 192
Headers/H-Pipe but strange sound
Just installed shorty BBK headers and a BBK Off Road H pipe. I have the scrapes
and bruises to prove it too.
They make a great sound. However when decelerating it sounds like a leak
is coming from somewhere. I tightened the bolts from the headers to the H-Pipe
very tight. The headers have a Mr Gasket between them and the heads. They
are also very tight. I plugged the pipes that go to the back of the heads.
???????
and bruises to prove it too.
They make a great sound. However when decelerating it sounds like a leak
is coming from somewhere. I tightened the bolts from the headers to the H-Pipe
very tight. The headers have a Mr Gasket between them and the heads. They
are also very tight. I plugged the pipes that go to the back of the heads.
???????
05-27-2009, 08:54 AM
#3
4th Gear Member
Join Date: Jan 2007
Location:
Posts: 1,999
It doesn't take much to gain your confidence.
As for the suspected leak. Try to plug the tailpipes with rags and run the engine. Get under the car and listen and feel for leaks.
After driving with the leak for a while. You can usually take the header back off the car and carefully study the mating surfaces for clues to where the leak was.
As for the suspected leak. Try to plug the tailpipes with rags and run the engine. Get under the car and listen and feel for leaks.
After driving with the leak for a while. You can usually take the header back off the car and carefully study the mating surfaces for clues to where the leak was.
05-27-2009, 04:23 PM
#5
4th Gear Member
Join Date: Oct 2007
Location: Phoenix, AZ
Posts: 1,219
did you plug the smog line on the midpipe? As mentioned before, lift car and get under while its running, that how I found a leak i had where the header connect to midpipe. It was louder than ****. When i fixed it i thought it wansn't lound enough..lol.
05-27-2009, 08:19 PM
#6
1st Gear Member
Join Date: Feb 2009
Location: Exton Pa.
Posts: 76
sound
Is the smog pump still hooked up? If it is the sound may be from the pump pushing air out the pipe you removed from the back of the head. If it is plug that up also. IF not check all the connections. I us soapy water to find leaks or find a shop with a smoke machine.
05-28-2009, 10:56 AM
#7
2nd Gear Member
Thread Starter
Join Date: Jul 2007
Location: Illinois
Posts: 192
The smog pump has been bypassed with an 84.5 belt. The piping has been removed.
I capped the pipe that goes to the back of the heads as I could not get the
bolts from the back of the heads off (used JB Weld on the 5/8 bolt).
I used a MR Gasket (but no gasket sealing material). Header bolts are on pretty tight.
I capped the pipe that goes to the back of the heads as I could not get the
bolts from the back of the heads off (used JB Weld on the 5/8 bolt).
I used a MR Gasket (but no gasket sealing material). Header bolts are on pretty tight.
05-28-2009, 11:12 AM
#8
M.A.D. Motorsports
Join Date: Jul 2006
Location: Indiana
Posts: 8,014
The smog pump has been bypassed with an 84.5 belt. The piping has been removed.
I capped the pipe that goes to the back of the heads as I could not get the
bolts from the back of the heads off (used JB Weld on the 5/8 bolt).
I used a MR Gasket (but no gasket sealing material). Header bolts are on pretty tight.
I capped the pipe that goes to the back of the heads as I could not get the
bolts from the back of the heads off (used JB Weld on the 5/8 bolt).
I used a MR Gasket (but no gasket sealing material). Header bolts are on pretty tight.
I hope you removed the pump too. No reason for it to be there. What do you have for the back half of the exhuast??
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