This has been done at G20.net. All you have to do is swap your existing intake manifold and valvecover and you are good to go. Look up a post by Mike.com he did it on his P10 and LOVES the roller motor in N/A form, a lot peppier and he does rev still to 7400RPM without a problem. That motor you have is the J-spec roller motor which revs to 7200RPM so you shouldnt have a problem.XxToKeSxX said:First of all I would like to show my deeeeeeep appreciation for Brian. He went out of his way to find me a very clean lowport. I will not be boosting... we had a long discussion about why not ... so having the roller rocker engine is not a problem for me. Only thing that really might be different is the fact that the oil filter isn't reachable from the top of the motor... no biggie for me.
I have no plans for boosting and will be enjoying this motor in the future... Go Lowports!
What is the main difference in the roller rocker lowport and the regular lowport... Aside from the oil filter locations?
BTW... looks like I have some parts to sell **cough** cams. I will let everyone know what I will be selling as my investigation of my old motor goes on. Swap Swap Swap!!!!
First of all, thanks for the info:Domiken said:My built roller rocker is exactly the same as yours. I just swapped my USDM intake mani and I was good to go.
Im glad you decided to go with that platform. The USDM roller rocker is 9:5:1, **** what everyone says that its 9:8:1, that was 1 person and that was not proven and Nissan always claimed 9:5:1 145hp. The only roller rocker that is 150hp is the P11 Primera GT motor which has the same USDM intake manifold but it has a different ECU for some reason and it is 10:1 compression and JWT can crack the code (1998-up). The 10:1 motors have a black valve cover.XxToKeSxX said:First of all, thanks for the info:
Maaaaaaaaaan... over the past week I have done more info than I have ever done on anything in my life. I have about 4 pages worth of text in notepad on differences, benefits, drawbacks, primeras, compression, piston ring difference, crankshaft wt and design difference, engine codes, vc difference, weight, varieties, difference from usdm/UK rr's, rollers, intake mani (including the page that you mentioned above) ... and I can't stop!
Only real thing I am unsure of is what my compression really is (I think that this engine came from a P11), and what my base HP truely is (could be 140 or 150 from what I have read). There are misconceptions everywhere on the net (here, g20.net, b15sentra.net, ohionissans, and other sites.
Since I live in SW Ohio, and we just got rid of E-Check <^><^> I am thinking of keeping the JDM intake manifold and also keeping my OEM one if I find a job out of state. I hope to swap it in maybe mid-late march (spring break or beginning of next school quarter)... (oooops... I let it slip!!!)
I will be making a fully organized thread on all the research of this particular engine and for roller rockers in general... As I didn't find lot of support for this engine... I also will be making a similar detailed thread on the swap process. I know I wouldn't be the first person to have a JDM RR, but I would like to get rid of all the misconceptions and boost support for this option.
All in all, I really just got lucky (others wouldn't think so)... And I plan to take advantage of the fact that I have been blessed to have the chance to do something that not everyone does, and stick with it (regardless of the rumors).
With the possible help of some of the people here: I hope to share the information that I get in the future so that more people will hop on the train (per se).
Yes he did.XxToKeSxX said:Hmmm... interesting stuff your spitting... I hate my current Intake mani, but I will take what you said into mind... Look's like I might get to keep my refurbished oil catch can AND my VC! We'll see. Did your friend end up keeping his intake mani? or did he do what you did?
What are the main troubles you can run into with the jdm mani? My guess is EGR, but I hear there are ways around it... (leave it unplugged) I dont know.
Actually the usdm roller rocker motor is 9.8:1.... :rofl: Check the FSM if you don't believe me.Domiken said:The USDM roller rocker is 9:5:1, fu*k what everyone says that its 9:8:1, that was 1 person and that was not proven and Nissan always claimed 9:5:1 145hp.