5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
BimmerWerkz.com is the premier BMW Forum on the internet. Registered Users do not see the above ads.
upon taking off the exhaust manifold, it wasn't really oval like there supposed to be in a perfect world. So i dremeled the surroundings as until it was all oval, took over 3 hours for all of them. I haven't had a chance to drive my car yet, but are there any performance gains from this? Thanx.
Not sure about our cars, but matching the head ports to the exhaust gasket and header to exhaust gasket does gain a little in the old-school V-8 world (i.e. my 72 Chevelle). You have to go back in the head a little to make it work, so it has a smooth transition from the shape of the exhaust port to the gasket and back out to the manifold. I hope you stuffed rags in the head to keep the metal shavings out of the motor.
__________________
-There are 10 kinds of people. Those who understand binary, and those who do not.
-If we ever forget that we are One Nation Under God, then we will be a nation gone under...Ronald Reagan
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
Linear Mode
