RB20DET Intake manifold

[mohnissan]

Hi guys

I want to ask about Intake manifold for RB20DET

I found a thailand made for good price

what do you think about it and do any one here use it or know how many HP & will give my

thanks for help

Plz guys need the help soon coz the man with the intake wite for my anwser

[cameron]

:uhh: I don't really understand what you'r talking about but i'll try answer it....

You don't really need an aftermarket manifold inless you'r running big boost eg: 18psi or more as for power gain's, test have been done and you get 0hp gain intil you'r running higher boost pressure.

Have you got any pics of it ?

[Cubes]

Stick with the stock manifold/plenum with the rb20det.

Spend money on mods that really make power.

PowerFC

Bigger Turbo

Adjustable Cam gears

Aftermarket Cams

[mohnissan]

This is a pic for it

what I want to do is:

I want to to a custom made piping for my FMIC and I think that when I move the TB (Throttel body) to the other side it will be easy to do the piping

[2LV8ETR]

I want to to a custom made piping for my FMIC and I think that when I move the TB (Throttel body) to the other side it will be easy to do the piping

Nah dude, go the normal route across the engine in front of the timing cover, then out the driver's side guard.

Save the dough for something that will give you bang for your bucks. :kick:

[VL-TRBO-RB20]

i got told u move the throttle body so its facing the front of the car, which reduces the piping so i guess less lag!

[2LV8ETR]

i got told u move the throttle body so its facing the front of the car, which reduces the piping so i guess less lag!

This previous response from sydneykid may help:

Hi guys, here is one I prepared earlier using an example of 4 intercooler setups and pipework we have actually used;

1. R33 GTST Standard Intercooler and standard R32 GTST pipework

150 rwkw = 27 lbs of air per min @ 13 litres of i/c & pipework

2. Supra Intercooler and matching 63mm pipework

180 rwkw = 30 lbs of air per min @ 15 litres of i/c & pipework

3. Standard GTR GTR and 63/75mm pipework

250 rwkw = 40 lbs of air per min @ 21 litres of i/c & pipework

4. Greddy 600 X 300 X 115 and 80 mm pipework

400 rwkw = 60 lbs of air per min @ 28 litres of i/c & pipework

If you look at the numbers you can see that the rate of air flow and the volume of I/C and pipework have a fixed relationship (27 = 13 , 30 = 15 , 40 = 21 , 60 = 28). This is not an accident, I designed it that way. The reason is I wanted to keep the throttle response as close what it was when the car had 150 rwkw, because I though that was very nice response.

The theory I followed was, the more power the engine produces the more air it needs. Thus if I keep the increase in the volume of air inside the inlet system in the same proportion as the power increase, then the throttle response should stay the same. This is based on the engine using the air in the same time frame.

So when people say they fitted a FMIC and have not noticed any less throttle response, my response would be, that is what I would expect. As long as they went from 150 rwkw to 180 rwkw. On the other hand, if there was no power increase then it would be simply physically impossible for there to be no decrease in throttle response.

The problem of poor throttle response arrises when you have a 220 rwkw engine with a 28 litre inlet system. This is something I see way to often.

Here's the thread:

rb20det and front mounts