Team-BHP > Under the Hood > Technical Stuff

Thread Tools Search this Thread
Old 24th October 2006, 11:30   #1
Octavia2's Avatar
Join Date: Sep 2006
Location: Chennai
Posts: 50
Thanked: 0 Times


I having been reading up on a bit on manifolds and I have question for the exhaust experts. I will take an example to illustrate this question.

Say my car currently has 2'' pipes in its manifold - 4 cylinder. Now assume I design a new manifold which has just the same fitting as the OE but with some subtle variances. The design would be 2'' at the intake, expanding gradually at the mid-section to 3'' and then to 2'' at the place where it joins the Manifold base (so no coupling, reducers etc. required). This will be mated with a cat back system with 2'' piping all around right upto the muffler intake.

In my opinion, this design should improve scavenging and improve flow of gases. The advantage is also that it will be just like OE but with reduced sound (unlike header design), and there is no need to mess around with O2 sensors etc.

Question is, what kinda gains can I expect in this design, both in terms of torque and bhp. And at what typica rpm ranges will this kick in?

Please give in your thoughts and views on this and do feel free to critique this design.

Octavia2 is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
An Analytical Approach to the Honda City Intake Manifold powerwheels Technical Stuff 15 24th April 2014 10:33
Suzuki Swift G13B Exhaust Turbo Manifold - Zage Turbosystems eapen Modifications & Accessories 16 15th May 2012 13:52
Forged Baleno Conrods , Crank , performance cam and intake manifold for SALE !!!! mclaren1885 Shifting gears 0 24th April 2007 23:23
contessa carb+esteem replacement k&N +manifold for sale! Stage3Monster Shifting gears 2 13th March 2005 08:55
Glowing BMW Manifold!! Stratos Shifting gears 3 16th December 2004 15:08

All times are GMT +5.5. The time now is 08:41.

Copyright 2000 - 2019,
Proudly powered by E2E Networks