Merge collectors

[chassis1]

Originally Posted by treessavoy

We've talked a lot about diameter but what about length, is equal length still the standard or is there any experimentation in tuning length to each cylinder?



JimR

You bring up a very good point with this question. Look at the stocker intake manifolds, do they have the same runner length?? NO!! so when the header builder like Calvin ask you to stagger jet, you ask him why?? Well thats why. Different cylinders will appreciate different tube lengths. Especially in a step header, stagger the steps and watch it pick up power!! The easiest way to see this is with your EGTs on the dyno.... well then again, everybody doesnt dyno...

Carry on.....