audio1der
Senior Member
- Joined
- Jul 30, 2012
- Posts
- 5,300
- Reaction score
- 1,103
- Location
- Airdrie, Alberta
- Ram Year
- 2012
- Engine
- Hemi 5.7
Nice write up. but I have a beef with some of the above for anyone to carefully consider
10hp from a single mod such as a TB? Wishful thinking. 10hp on a 390hp engine is 39Hp. You'd feel that; that is a measurable gain. You'd do well to gain that much from a tuner.
On the gasket note, there is a small, white, rubberized gasket semi-inlaid into the top the intake manifold where it meets the base of the TB. Unless you're working very haphazardly you should not dislodge it during a normal TB installation, and it does not need to be touched or replaced if upgrading to a ported TB. I had to carefully pry mine out with a jewler's screwdriverwhen port-matching my TB to the intake manifold.
This is something I think most people overlook because its not a bolt-on. When I placed my 87mm TB on the manifold and held the butterfly plate open I could feel a good sized lip of manifold jutting out below the base of the TB, as the TB diameter was now larger than the manifolds. Why on earth would you continue to bolt the TB down and call it a day?? I'm not sure what the difference would be with an 85mm but I suspect a few minutes with a Dremel would also benefit you there. I'd still give my polished, knife-edges TB to someone if they could show a dyno gain of 10Hp for this one mod.
My $.02
10hp from a single mod such as a TB? Wishful thinking. 10hp on a 390hp engine is 39Hp. You'd feel that; that is a measurable gain. You'd do well to gain that much from a tuner.
On the gasket note, there is a small, white, rubberized gasket semi-inlaid into the top the intake manifold where it meets the base of the TB. Unless you're working very haphazardly you should not dislodge it during a normal TB installation, and it does not need to be touched or replaced if upgrading to a ported TB. I had to carefully pry mine out with a jewler's screwdriverwhen port-matching my TB to the intake manifold.
This is something I think most people overlook because its not a bolt-on. When I placed my 87mm TB on the manifold and held the butterfly plate open I could feel a good sized lip of manifold jutting out below the base of the TB, as the TB diameter was now larger than the manifolds. Why on earth would you continue to bolt the TB down and call it a day?? I'm not sure what the difference would be with an 85mm but I suspect a few minutes with a Dremel would also benefit you there. I'd still give my polished, knife-edges TB to someone if they could show a dyno gain of 10Hp for this one mod.
My $.02
