2-into-1 Exhaust Systems for Circle Track Race Cars
The Ultimate Exhaust System for Your Race Car
Let’s face it: Exhaust systems are a drag to install on a race car. For this reason, most racers take the easy way out and simply hang a couple of pipes on the manifolds. This is the worst way to run an exhaust system with cast iron manifold!
Installing an exhaust system where the two exhaust pipes run into our 2-into-1 collector will produce more power and make it quieter than dual pipe systems.
This original Brzezinski Racing Products design routes the exhaust pipes from each side of the engine into one common collector. With this design we are tricking the engine into thinking it is firing every 90 degrees as opposed to the random firing of dual outlet systems.
2-into-1 systems have a dramatic effect on power from 3500 to 7000 rpm. The most important fact to remember when building your system is that the primary pipes need not be routed in any particular way to gain the added horsepower of the 2-into-1 effect. While “over the top” installation is generally easier, a system underneath the car will achieve the same power figures. The engine doesn’t care how the exhaust pipes are routed. However, NOT running your two exhaust pipes into one of our collectors will cost you 10 to 25 horsepower!
Corvette Manifold 2-into-1 Dyno Test
As you can see in the dyno test results in the dyno chart at right, there is a 29 hp gain at 5000 rpm with the addition of a 2-into-1 System.
2-into-1 Exhaust System Kits
- Quieter than dual systems
- 10 to 25 more horsepower than dual pipes
- If you need additional pipes, we have them in stock
- Any unused pipes from the 2-into-1 kits can be returned for full credit.
|Part#||2-into-1 Exhaust Systems||Price|
|171A-3.5||2 1/2″ Exhaust System Kit for 2 1/2″ outlet Corvette Ram Horn manifolds. Kit includes: (1)#164A kit, (1)#169B Collector, (5)#167A 90° pipes & (1)#168A 45° pipe.||459.00|
|171A-193||2 1/2″ Exhaust System Kit for Log Manifolds.
Includes:(2)#193F-25A Gasket-Less adapters, (1)#169B collector, (3)#167A 90° pipes and (3)#168A 45° pipes.
The key component of the 2-into-1 System
We have run countless dyno tests on 2-into-1 versus dual pipe systems. Whenever the primary pipes are routed into one of our collectors, 10 to 25 horsepower is gained.
|169||Collector, 3″ inlets and 3 1/2″ outlet for 2 barrel engines.||$140.00|
|169B||Collector, 2 1/2″ inlets and 3 1/2″ outlet.||140.00|
|170||Collector, 3″ inlets and 4″ outlet for 355 and larger 2 barrel engines running good manifolds or 4 barrel engines.||140.00|
|Tips for Building your 2-into-1 System . . .
for Building your
(46K pdf file)