- Joined
- August 3, 2000
- Messages
- 31,706
- Reaction score
- 8,367
- City, State
- NORTH IDAHO, 7B
- Year, Model & Trim Level
- B2 "Slightly" Modified
- Callsign
- FOURTEN
Okay so I’ve had several sets of tmh that will not seal well at collector
I have solved it
Usually The collectors (downpipe) get over tightened and stretch and then sealing is difficult
I’m Guilty for sure, in my bii, I for sure stretched those pipes out years ago
There is hope
You can access thoseBolts! It is not that bad! Use 3/8 drive and wobbly extension, get truck high up in the air so you can a shot at it
The access angle is back by the cat converter
So first you need to make sure the ball flange is straight to the downpipe, even gap all the way around
The snug up the bolts evenly
If that does not solve the leak, there is still hope
Chevys use a crush ring inside some of their exhaust connections. They fit the header and Downpipes perfectly. I use some
Hot glue (just a dab) to hold it in place and then aligne the downpipe and torque the bolts
No more leaks from the collectors
I have had to do this on more then one truck since
I can get the part number but basically I went to the parts store asked to see their exhaust gaskets and chose two rings that are 2.25-2.5” in dia, they are for a sbc I believe
In dia
Oh you are taking about your repaired collector on the header itself! That stinks!!
I misread and thought it was the ball flange at downpipe…
Dang!!
I have solved it
Usually The collectors (downpipe) get over tightened and stretch and then sealing is difficult
I’m Guilty for sure, in my bii, I for sure stretched those pipes out years ago
There is hope
You can access thoseBolts! It is not that bad! Use 3/8 drive and wobbly extension, get truck high up in the air so you can a shot at it
The access angle is back by the cat converter
So first you need to make sure the ball flange is straight to the downpipe, even gap all the way around
The snug up the bolts evenly
If that does not solve the leak, there is still hope
Chevys use a crush ring inside some of their exhaust connections. They fit the header and Downpipes perfectly. I use some
Hot glue (just a dab) to hold it in place and then aligne the downpipe and torque the bolts
No more leaks from the collectors
I have had to do this on more then one truck since
I can get the part number but basically I went to the parts store asked to see their exhaust gaskets and chose two rings that are 2.25-2.5” in dia, they are for a sbc I believe
In dia
Oh you are taking about your repaired collector on the header itself! That stinks!!
I misread and thought it was the ball flange at downpipe…
Dang!!