EFI Exhaust conversion problem. FYI
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From: Fraziers Bottom, WV
EFI Exhaust conversion problem. FYI
I completed a conversion to EFI exhaust, offey Intake and Holley 390 cfm in March of this year. I have had my first problem described below and the solution.
I used a Walker down pipe or converter pipe with my EFI manifolds. I used new studs and nuts to attach the manifolds. After a very hard pull for about 250 miles with about 3 tons including a trailer. I found an exhaust leak near the rear of the back exhaust manifold. It was my fault by not checking the mainfold bolts after the install.
But!
The problem! The walker down pipe has cracked on the main pipe just below where the rear manifold pipe attaches.
The solution: I should have used a stainless steel flex joint before the cat. This would have prevented the problem. The exhaust system is OEM style replacement and is very ridged. When I am in 4WD going to the barn the truck is in a very good twist and I don't think the exhaust system has that much give.
I used a Walker down pipe or converter pipe with my EFI manifolds. I used new studs and nuts to attach the manifolds. After a very hard pull for about 250 miles with about 3 tons including a trailer. I found an exhaust leak near the rear of the back exhaust manifold. It was my fault by not checking the mainfold bolts after the install.
But!
The problem! The walker down pipe has cracked on the main pipe just below where the rear manifold pipe attaches.
The solution: I should have used a stainless steel flex joint before the cat. This would have prevented the problem. The exhaust system is OEM style replacement and is very ridged. When I am in 4WD going to the barn the truck is in a very good twist and I don't think the exhaust system has that much give.