Newb With Rb Engines

[SlideMasta]

Hello, Australian friends...

My name is Jacob Garcia and I live in the Sates but I'm from Colombia, I'm new to the forum, but all my life i've been into Nissans and Infinitis. So much, that this past year I decided to become a Nissan Certified Tech, i've studied at some technical school and I have basic knowledge of general engines, variable valve timing systems, emissions and more... but my focus is on SRs, VKs, VQs, and now RBs, i've always liked 240s, and my 98 drift machine was stolen while studying in Orlando... . I recovered it and I still have the Kazama Arm Links and the Rims. I sold the shell, Ka and tranny and a few things that were left. I never got around to dropping the blacktop SR that I still have but... soon will be done. This project has been detained by many many reasons... and I almost feel like it wasn't meant to be. Patience has tough me 2 do my home work, and read as much as I can before making a heavy $ decision.

I've rebuilt 2 Redtop SRs and "magically they still run" but I honestly don't know how. I've been reading ESMs for Nissan engines now, for about a year and their instructions are my actions, so I guess I'm doing something right. All my friends, come to me for advice, but I'm no wizard and like I said... I do my research before saying some things that I'm uncertain of. I really envy all of you, because you get 2 enjoy these amazing inline 6 vehicles and we don't here in the States. My friend Alex that used to drive a turbo Mazda MX6, bought and 95 R33 GTST from UK with the 25 and imported it to Florida, he's had it for about 3 years now. We used to drive it with my Nissan license plate since both cars were silver, haha but now it's registered. Now he's having oil pressure problems, I figured his pump is bought go, since "his gauge doesn't display the pressure it used to" could I have some advice on this, I want to plug another gauge to the block and see what that one says.

Also, since he only things bigger is better he wants to upgrade his single to a bigger turbo. But i've tried hard to explain to him, that he needs to PM (personal maintenance) whatever is wrong before he continues, am I right? (I kind of want him to read this from experts so he doesn't think I'm not kidding.)

My next questions are… what are some Good or personally recommended distributors for the States (finding parts isnt easy)

Is the N1 oil pump a good choice?

I've heard some about oil delivery problems in the 25 head?

Should I waste my time looking up and calculating his Volumetric Efficiency to choose a good turbo size?

Should he get cams first (even thought I know the cams are the heart of the engine, and they should be chosen based 5 BILLION aspects of the car, even like tire size)

should I just find a turbo kit? Which ones do you recommend?

What else should I look into before swapping his turbo?

Standalone? Can I use a piggy back? What about fuel?

Do I need injectors since his ECU is tuned for 98 Brutal jungle juice rather than the 93 octane we get here?

Or perhaps ignition? I know some people have used MSD coil packs from corvettes?

What should I tell him, to do before he just dumps a load on a turbo, and he ends up blowing it… and blames me for forgetting to change the muli-pluxi-modulator… haha. I really want to expand my knowledge on the RBs, the 25 is what he has… I know the 26 "might" be better but as always better is a matter of opinion. Any advice you wise men from that FAR FAR away island, can give me will be appreciated… if there is anything I could find out for you guys form an Assist Software in a dealership… that I could help you with (which is unlikely) pls don't hesitate to email me or contact me… I'm always in the lookout for Nissan brothers….

Thanx again, and I hope to learn much from this KICK ASS forum

also, i noticed that his TPS is unplugged... as in there are no wires leaving it... ???? does the rb25 not need a TPS signal? his car dosnt have a speed limiter and it has a mph mile gauge... im sure thas only cause its from UK any thoughts?

Edited January 13, 2008 by SlideMasta

[mesmerized]

paragraphs dude, too hard to read .

but you'll find most of your answers by doing a search

Edited January 13, 2008 by into oblivion

[SlideMasta]

paragraphs dude, too hard to read .

but you'll find most of your answers by doing a search

Thanx into oblivion, i was kind of expecting that answer sooner or later... my main question rly is the oil pressure is it common for it to drop, like he says? i wish i could say specific readings, the engine only has about 45K (miles) he is one of those i start my car and beat it... no waiting for opt. temp. kid doesnt even know what kind of spark plugs he needs... i just want to benefit my knowledge by workin on his engine... lol nice lab rat

[sloazr33]

it is common for the oil pressure sender units on the rb25 to give dodgy readings

it is recommended to get it properly checked to confirm it is the sender unit and not oil pump

but, if he is flogging it when its cold, it could be more than just the sender unit

[R31Nismoid]

Read the links in this thread:

http://www.skylinesaustralia.com/forums/Fo...ick-t66556.html

Contains links to oil threads, mods, basic/indepth and so on.

Plenty to read and learn from

[SlideMasta]

Thank you sloazr33, my first thoughts were to properly chekc on the side of the block where the ESM says i should, ill get an oil press. gauge and verify. Now that you bring up a good point, i should do a compression and cylinder leakdown, to check the valves and rings.

I do have to verify the problem, on what he actually means by "the oil pressure drops," i will also read the ESM on how to diag. it. Im sure it drops when hes beating it but not when its cold... again im not sure, but im sure his constant abuse might have driven the engine to some problem that i might be unaware of, i told him to lay off the driving until i take a look at it. All i know is that the oil level is fine... lol that much, he can verify

Any one else have any other thoughts that could help me answer these questions?

just curiosity, has any one caculated VE on stock rb25 head? for turbo choice purposes. Obviously if i change the cams, port ect. the Efficiency will be different, but id like to know how much those cylinders are sucking and blowin vs. what ill get the to do when im done

Edited January 13, 2008 by SlideMasta

[SlideMasta]

Read the links in this thread:

http://www.skylinesaustralia.com/forums/Fo...ick-t66556.html

Contains links to oil threads, mods, basic/indepth and so on.

Plenty to read and learn from

NOW THIS IS WHAT I NEEDED!!!!! YAY.... kid in a candy store... good job man