Noddle Posted January 14, 2007 Share Posted January 14, 2007 Hi, These two manifolds are slightly different, will they work the same, or would one be better that the other, The reason I ask is the rusty one, has the turbo close to the center of the manifold, and the painted one is closer to one end. Nigel Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted January 14, 2007 Share Posted January 14, 2007 The rusty one would work "better" because of the more central turbo mounting flange but I doubt much difference would be seen between them. Not a big deal though...the painted one looks better... A Euro manifold with expansion joints would be the best though. Quote Link to comment Share on other sites More sharing options...
Tony D Posted January 15, 2007 Share Posted January 15, 2007 Interesting.... Those both appear to be Nissan Manifolds as well... I would probably use the one with more spacking from the front of the engine, as if you are converting an N/A manifold, you have to relocate the PCV valve, and with the turbo further back this may not be necessary. I think being both Nissan Manifolds, either will flow fine for your application. Ported Stock Nissan got JeffP to 415HP to the rear wheels... Quote Link to comment Share on other sites More sharing options...
Kennysgreen280zt Posted January 15, 2007 Share Posted January 15, 2007 Interesting, I guess I know why my downpipe didnt fit after a few manifolds got swapped. I had no idea there are two different styles. Quote Link to comment Share on other sites More sharing options...
Tony D Posted January 15, 2007 Share Posted January 15, 2007 U-&-Me, both! LOL Quote Link to comment Share on other sites More sharing options...
Careless Posted January 15, 2007 Share Posted January 15, 2007 next time your girl tells you an inch DOES matter, you damn well listen to her! Interesting, I guess I know why my downpipe didnt fit after a few manifolds got swapped. I had no idea there are two different styles. Quote Link to comment Share on other sites More sharing options...
jp 280 Posted January 15, 2007 Share Posted January 15, 2007 I noticed when i got my engine that the flange was in a different place then all the pictures i had seen of manifolds, there may be a post somewhere about it, mine came off a L20. Quote Link to comment Share on other sites More sharing options...
GrayZee Posted January 15, 2007 Share Posted January 15, 2007 Yeah, only kind I have ever seen is the rearward mounted one.. Quote Link to comment Share on other sites More sharing options...
Tony D Posted January 16, 2007 Share Posted January 16, 2007 Maybe my L20ET manifold is also different, I will have to check it, the thing is lumped up on a shelf in the shed... I never had any issues swapping my manifold for the US Spec unit, as I kept the same JDM downpipe (Aftermarket Trust/Greddy Piece) and exhaust, and nothing moved relative to the engine/transmission mounting flange (which is where the downpipe split stopped and the exhaust system began...) Quote Link to comment Share on other sites More sharing options...
GrayZee Posted January 16, 2007 Share Posted January 16, 2007 Another advantage of the forward style manifold would be that you could have a DP with a less harsh angle. Quote Link to comment Share on other sites More sharing options...
LamboZ Posted January 16, 2007 Share Posted January 16, 2007 Another advantage of the forward style manifold would be that you could have a DP with a less harsh angle. Good point. only one ive ever seen like the more forward style manifold was on a Asian spec 280zx turbo. maybe they were different then the euro ones. Quote Link to comment Share on other sites More sharing options...
frank280zx Posted January 16, 2007 Share Posted January 16, 2007 Probably a laurel or l20 style of some sort of manifold they run front sump for a reason on those.. apart from that i don't think there will be a great performance difference Quote Link to comment Share on other sites More sharing options...
GrayZee Posted January 17, 2007 Share Posted January 17, 2007 I was thinking some more about it, the manifold has a more central outlet which seems good but under boost (and assuming hard acceleration) wont the rear cylinders have to push harder to get the gases out as they are fighting the motion of the car? For this reason maybe this would make there rear outlet more desirable. However what I said before about the angle of DP, well in the case of a S130 chassis.. it really might be a nice advantage over having to use two 90 degree bends. Basically I don't know what I'm talking about, just throwing out ideas.. LOL Quote Link to comment Share on other sites More sharing options...
djz Posted January 20, 2007 Share Posted January 20, 2007 I found a manifold like the rusty one on a C31 L20ET Laurel, all the HR30 manifolds I've got are like the painted one. The C31 had the PCV in the same place as an n/a L28 with a right angle pipe coming off it. Only problem with the C31 style manifold is if you have a big compressor housing it can hit on the engine mount. Quote Link to comment Share on other sites More sharing options...
stagefumer11 Posted January 21, 2007 Share Posted January 21, 2007 DJZ, good to see you on here now Quote Link to comment Share on other sites More sharing options...
slownrusty Posted January 21, 2007 Share Posted January 21, 2007 Pretty sure like everyone says that is a L20ET mainfold...off something like this: or even this: Here is an actual L20ET I recently photographed: Yasin Quote Link to comment Share on other sites More sharing options...
djz Posted January 30, 2007 Share Posted January 30, 2007 Thats one of the good L20ETs, its got the idle control on the bottom of the throttle body with a right angle adaptor, it'll have the PCV in the normal n/a place and the bigger j pipe (more like an L28ET), but the turbo does sit further forward. Quote Link to comment Share on other sites More sharing options...
stagefumer11 Posted January 30, 2007 Share Posted January 30, 2007 or these (my baby) Quote Link to comment Share on other sites More sharing options...
Noddle Posted January 30, 2007 Author Share Posted January 30, 2007 stagefumer11, What’s the "T" piece connected to, on your fuel pressure regulator ? Quote Link to comment Share on other sites More sharing options...
stagefumer11 Posted January 31, 2007 Share Posted January 31, 2007 Boost guage Quote Link to comment Share on other sites More sharing options...
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