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Old 12-02-2017, 03:59 PM   #183
John_C
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Originally Posted by JANNETTYRACING View Post
When the smaller port dumps in to a larger tube there is pressure drop which helps expel the spent gases from the chamber making more room for fresh air fuel charge on the next cycle.

Note there is a point of too big but 2 inch is not it.

Ted.
What do you think about the stepped headers in 1-3/4 to 1-7/8? Have you dyno'd any?

This folks say the dyno turned +10hp and 8ftlb over 1-7/8.
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Old 12-04-2017, 07:30 AM   #184
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Hello, Ted

If you don’t get rid of torque management, what kind of funky things happen when doing the quarter mile drag? Thanks
It can interfere with the application of power to the wheels.
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Old 12-04-2017, 07:36 AM   #185
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What do you think about the stepped headers in 1-3/4 to 1-7/8? Have you dyno'd any?

This folks say the dyno turned +10hp and 8ftlb over 1-7/8.
We have had several cars come through with stepped headers but could not quantify any notable difference since it was not in any back to back testing.

Same goes for the Tri Y Headers.

There is a lot of Header technology that makes power BUT

When you going through a full exhaust system the fancy headers can not show there true ability.

I know we would see advantages in an open header situation that is a fact.

Ted.
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Old 02-26-2018, 08:58 PM   #186
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It can interfere with the application of power to the wheels.
Awesome answer!!!
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Old 06-11-2019, 07:15 AM   #187
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Bumping up valuable info for the community.
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