Just another knock off manifold post!

Discuss the RB20, RB25 and RB26 series engines.
JustinRB25s13'92
Posts: 17
Joined: Mon Sep 07, 2015 1:24 pm
Car: 1992 S13 240sx RB25s2
Megasquirt MS3X
Spec Stage 3 Clutch
FMIC
Walbro 255
Knock-Off HKS BOV
Plastidipped Gunmetal
Welded Diff
Delrin Solid Engine Mounts.

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Hey guys, I'm still fairly new to Nico so please don't destroy me yet, thank you lol....

Alright, so I have an s13 with rb25... I want to move to a top mount and have done nothing, but search and search.... I went with a CXracing top mount manifold very similar to the Ebay top mount Rev9, I'll have pics later, but has anyone actually ran this in an s13 with an RB??? could you show me with pics and not had to modify the flange location or anything? If anyone has please let me know or even just post images in this thread of fitment and if you had to do any mods or if the brake master was in the way or anything, please! I may not have this post in the right location, but any advice or help would wonderful. Thank you to all of you nice ladies and gentlemen that do take the time to read this. Have a great day! :)


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ANVIL
Posts: 1133
Joined: Sun Apr 08, 2007 11:36 am
Car: RB25DET S13.5
Location: Alaska

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Best advice would be to examine what u have, fix any imperfections and test fit and go from there.

JustinRB25s13'92
Posts: 17
Joined: Mon Sep 07, 2015 1:24 pm
Car: 1992 S13 240sx RB25s2
Megasquirt MS3X
Spec Stage 3 Clutch
FMIC
Walbro 255
Knock-Off HKS BOV
Plastidipped Gunmetal
Welded Diff
Delrin Solid Engine Mounts.

Post

Yes I plan on it, thank you. I was just hoping to see someone actually have this manifold or a similar one installed on an rb25 in an s13 or s14. As of right now the flange angle is pitched so badly that its for sure going to hit the valve cover as is, so I just want to hear more options and opinions. :) thanks for the reply though!

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SullivanRacing06
Posts: 1974
Joined: Sat Apr 21, 2007 8:45 am
Car: r32 gtst, 06 350z, r32 gtr, rs4 steaga, 04 350z, f350/6bt
Location: Gainesville

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Do you have the manifold that all six runners that go into the collector straight then turn up into a t3 flange? Or is it the curvy one?

JustinRB25s13'92
Posts: 17
Joined: Mon Sep 07, 2015 1:24 pm
Car: 1992 S13 240sx RB25s2
Megasquirt MS3X
Spec Stage 3 Clutch
FMIC
Walbro 255
Knock-Off HKS BOV
Plastidipped Gunmetal
Welded Diff
Delrin Solid Engine Mounts.

Post

Bit late response, but yes its six runners that go into the collector straight then turn up into a t3. I had to cut the flange off and re-weld it, but I hate the location that it put the turbo. As it was way too close to the brake master and constantly created nasty problems. Also the manifold's flanges were both warped on the exhaust out to turbo side and engine side. I also had to cut off the wastegate flange/tubing and spin it 180 degrees so I could put my wastegate on. I'm sure its probably fine for RHD stuff, but not Left.


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