Header design
(→Summary of header design principles) |
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#A long and smooth collector is a good thing. | #A long and smooth collector is a good thing. | ||
#Just like header tube size, be reasonable with the size of your exhaust system. | #Just like header tube size, be reasonable with the size of your exhaust system. | ||
| − | One thing that has not been discussed is the unequal firing order from one bank to the other. I did an research paper on Exhaust tuning when I was in college, A Jaguar racing engine had %105 volumetric efficiency,,, the torque peaks vs rpm looked like the grand teton mountains Start with a sheet of graph paper and draw the engine in plan view then draw a line 8 blocks long from cylinder no 1 . a line 7 blocks from cylinder firing next.... 6 blocks from the cylinder that fired third etc and so on following the firing order. . You will see the lines are not uniformly distributed , the ford 63 indy engine had the "bundle of snakes" exhaust system on the top with pipes crossing over to have 4 equally spaced exhaust charges in each exhaust header, some race car headers had pipes crossing under the trans to get equal charging in each header ==See also== | + | One thing that has not been discussed is the unequal firing order from one bank to the other. I did an research paper on Exhaust tuning when I was in college, A Jaguar racing engine had %105 volumetric efficiency,,, the torque peaks vs rpm looked like the grand teton mountains Start with a sheet of graph paper and draw the engine in plan view then draw a line 8 blocks long from cylinder no 1 . a line 7 blocks from cylinder firing next.... 6 blocks from the cylinder that fired third etc and so on following the firing order. . You will see the lines are not uniformly distributed , the ford 63 indy engine had the "bundle of snakes" exhaust system on the top with pipes crossing over to have 4 equally spaced exhaust charges in each exhaust header, some race car headers had pipes crossing under the trans to get equal charging in each header |
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| + | ==See also== | ||
[http://en.wikipedia.org/wiki/Manifold_%28automotive_engineering%29 Wikipedia article on exhaust manifolds] | [http://en.wikipedia.org/wiki/Manifold_%28automotive_engineering%29 Wikipedia article on exhaust manifolds] | ||
[[Category:Engine]] | [[Category:Engine]] | ||
{{youcanedit}} | {{youcanedit}} | ||
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