Adding a Ram-Air Intake

**degrom** · 28th September 2007, 07:58

What will happen if you create a Ram-Air Intake for a bike with a normal air box that sits under the seat?

Will it hurt performance?
Do you need to make the fuel mixture richer?

**vifferman** · 28th September 2007, 11:39

Some links for you:
http://en.wikipedia.org/wiki/Ram-air_intake

and:
http://www.sportrider.com/tech/146_9912_ram/

**slowpoke** · 28th September 2007, 12:29

It's easy on an injected bike but tuning carbed bikes is notoriously difficult. The difference in conditions within the airbox between say redline in first gear (say 120kmh) and redline in fifth gear (say 240kmh) can lead to allsorts of tuning headaches.
I've got a ram air setup on my carbed R1 and it works well (after a dyno tune at Welly MC) but a lot of the crowd on another R1 forum I sniff around reckon it's not worth the hassle for what are relatively small gains.

**Disco Dan** · 28th September 2007, 13:03

Originally Posted by degrom

What will happen if you create a Ram-Air Intake for a bike with a normal air box that sits under the seat?

Will it hurt performance?
Do you need to make the fuel mixture richer?

The ram-air on my zx11 avoids the airbox and goes straight into the carbs. Gives you a few extra ponies at high speeds...

**Disco Dan** · 28th September 2007, 13:16

Found a diagram of the Ram-Air system on my bike which may be useful.

The air vents (2) have the ram-ar tubes in the centre and route over the top of the standard air intakes to the rear of the carbs (12).

**Disco Dan** · 28th September 2007, 20:10

I think the reason why it goes straight into the carbs rather than go through the air box is the high density pressure of the air from the ram-air intake pipes. However wouldnt the pressure need to be balanced on the other side of the carbs to prevent a vaccum ?

**doc** · 28th September 2007, 20:21

Originally Posted by Disco Dan

I think the reason why it goes straight into the carbs rather than go through the air box is the high density pressure of the air from the ram-air intake pipes. However wouldnt the pressure need to be balanced on the other side of the carbs to prevent a vaccum ?

If you are lookin in the Hypercharger area it's bull , it's simply bling. But looks cool.

**The Pastor** · 28th September 2007, 22:19

i'll be trying this mod on my mc22 when ive gotten my kit sorted out. I doubt it will do anything, but I want to tune it with free flowing intake and exhaust and its pretty easy to do (apart from tuning).

**vagrant** · 28th September 2007, 23:50

Originally Posted by degrom

What will happen if you create a Ram-Air Intake for a bike with a normal air box that sits under the seat?

Will it hurt performance?
Do you need to make the fuel mixture richer?

If you to try that, don't mess around , Turbo it!!!