Admin Are intake and exhaust manifold the same?
In automotive engineering, an inlet manifold or intake manifold (in American English) is the part of an engine that supplies the fuel/air mixture to the cylinders. In contrast, an exhaust manifold collects the exhaust gases from multiple cylinders into a smaller number of pipes – often down to one pipe.
How much HP do headers add?
In general, a quality set of headers should provide an increase of approximately 10-20 horsepower, and if you’re restrained with your right foot, you may even see an increase in fuel mileage.
Can a 4.0L intake manifold increase horsepower?
As you look at the difference it is apparent that the newer manifold allows for more even and smoother air flow. According to articles this manifold could increase horsepower as much as 15. I was speculative. Searching the internet I found several outlets to purchase the manifold and did so on Ebay for a reasonalble amount.
Why did they change the intake manifold on a 1999 Jeep Wrangler?
The manifold from a 1999 – 2004 is designed to increase horsepower as due to new emission requirements the 1999 -2004 engines lacked the horsepower of the earlier model inline Jeep 6 cylinders and the engineers redisigned the manifold for greater flow.
Can a 4.0 head be used on a 2WD Grand Cherokee?
What I used was a head and exhaust manifold from a 97 grand cherokee 2wd. The head has the 7120 casting number, which still has the temp sensor in rear of the head. make sure to get the pushrods and rockers from donor engine, the pushrods are shorter on the 4.0 head than the 4.2.
Can a 4.0L Inline 6 cylinder be swapped?
After researching various documents regarding the intake manifold upgrade for the older 4.0L Jeep inline 6 cylinders I decided to give it a go. The following is what I found to be true on my 1989 YJ.