RB25DET Greddy Intake Manifold Question? PLEASE HELP!!!!=

Discuss the RB20, RB25 and RB26 series engines.
User avatar
XLR8_S14
Posts: 6
Joined: Wed Sep 23, 2009 6:01 pm
Car: 1995 S14 (Soon to be RB25 Powered)

Post

ok, so Ive been trying to get simple information on another 240sx forum, but so far no luck. I really need some help with my greddy intake manifold...Preferably if you have just installed one.

#1 - There is a line that goes around the back end of the motor from the turbo and it ends as it is coming around the back left corner. What line is this? What do I do with it?

#2 - Ok, so there are like 4 nipples on the bottom side of the manifold, towards the back. What exactly goes to all of these nipples? If possible, can somebody just go look at theirs and write down exactly where they have each one going to? Thanks

I think one goes to the FPR, one goes to the waste gate, and Im not sure where the other goes, and I think the bigger one goes to the cam breather hose. Or at these that is what I have gathered from pics. PLEASE HELP!!!


User avatar
Funktown240
Posts: 92
Joined: Sun Sep 20, 2009 12:42 pm
Car: 93' 240sx

Post

The line that goes around the back of the motor is the coolant line for the turbocharger. As for the vacuum ports, the larger nipple if for the PCV valve-I used the others for the FPR, BOV and my boost gauge(I tee'd my WG vacuum source from the FPR). Here is a great write up that I used to get through the install, it has all the info you will need for it: http://www.driftsideracing.com...d=119
XLR8_S14 wrote:ok, so Ive been trying to get simple information on another 240sx forum, but so far no luck. I really need some help with my greddy intake manifold...Preferably if you have just installed one.

#1 - There is a line that goes around the back end of the motor from the turbo and it ends as it is coming around the back left corner. What line is this? What do I do with it?

#2 - Ok, so there are like 4 nipples on the bottom side of the manifold, towards the back. What exactly goes to all of these nipples? If possible, can somebody just go look at theirs and write down exactly where they have each one going to? Thanks

I think one goes to the FPR, one goes to the waste gate, and Im not sure where the other goes, and I think the bigger one goes to the cam breather hose. Or at these that is what I have gathered from pics. PLEASE HELP!!!

User avatar
XLR8_S14
Posts: 6
Joined: Wed Sep 23, 2009 6:01 pm
Car: 1995 S14 (Soon to be RB25 Powered)

Post

ok thanks...what is everyone else running?

User avatar
virus77
Posts: 1775
Joined: Thu Mar 25, 2004 9:43 am
Car: 95 S14, 71 240z, 97 e320

Post

brake booster goes to one of the big ones as well as the PCV. Whatever you have left can be used for boost gauge, fpr, bov and wastegate although I prefer to run my wastegates signal from the intercooler piping so it never sees vacuum. Cap off whatever you don't use and try not to tee anything if you don't have too.
Modified by virus77 at 9:41 AM 9/24/2009

User avatar
XLR8_S14
Posts: 6
Joined: Wed Sep 23, 2009 6:01 pm
Car: 1995 S14 (Soon to be RB25 Powered)

Post

ok, where exactly is the brake booster gonna be located at?

User avatar
virus77
Posts: 1775
Joined: Thu Mar 25, 2004 9:43 am
Car: 95 S14, 71 240z, 97 e320

Post

Your brake booster is that big circular device on the driver side firewall which has a master cylinder sticking out of it(where you add brake fluid) The booster has a big rubber line (3/8" inch or so) which runs across the back of the firewall by the hardlines. This line needs to be connected to the big fitting on the manifold so your booster can function properly or else your brakes would feel stiff like when your car is off.

You need to start doing a lot of reading buddy, from what I can tell you are not too experienced with cars and the RB can be a big kick in the sack for a newbie. Good luck and use the search function like its your new best friend. If all else fails post up and well see if we can get you through this lol.


l0nestar
Posts: 2251
Joined: Fri Mar 10, 2006 5:24 am
Car: 1993 Nissan 250SX
2004 Toyota Altezza
1963 Chevy Impala SS
Contact:

Post

I converted the DSR 'guide' to a PDF.


Return to “RB20DET / RB25DET / RB26DETT Forum”