RB25 parts/swap list, hows it look?

[1derboy16]

I want to swap in an RB25 into my s14 and I want you to check out my parts/swap list and tell me what you think. I am going to keep the stock cams and turbo. My goal is to hit low 13's and if possible high 12's. I want to build basically a rly fun car to drive and this will be a daily driver. I put questions next to some parts do if you can help answer them it would be great.
Thanks.
RB25DET (motor set)
R33 crossmember
Precision turbo FMIC
Custom intercooler piping
Custom intake piping
Apexi intake
Syko motor sports motor mounts
Nismo tranny mounts
Syko Custom driveshaft
Blitz DD BOV
Syko 3” Downpipe/ O2 housing
Test pipe
450cc injectors (what do you think about these?)
Apexi N1 exhaust
Flex-A-Lite Fans
Walbro 255 Fuel Pump
Nismo FPR
Steel braided turbo lines
Blitz BC
S-AFC2
Koyo/Fluidyne Radiator (which one?)
C’s short shifter
ACT street/strip clutch
SS clutch line
LS Automotive Tach gauge
Oil catch can
Oil cooler (do I need one and if so, can u recommend a brand?)

Replacement parts-
Power Enterprise Timing Belt
OEM water pump
OEM oil Pump
Power super V-belt
Z32 fuel filter
K&N oil filter
Nismo thermostat
Full rebuild gasket kit
Denso spark plugs (hr-6)

Thanks

[Tenchuu]

OK so i take it that you are using the syko kit. I will break down your list for you real quick to include some things that will be needed, and some that aren't required,but go ahead if you got the cash to upgrade while it is out:

RB25DET (motor set)
R33 crossmember
Precision turbo FMIC
Custom intercooler piping
Custom intake piping
Apexi intake
Syko motor sports motor mounts
Nismo tranny mounts ***nice but not a basic need
Syko Custom driveshaft
Blitz DD BOV ***need tuning to run
Syko 3” Downpipe/ O2 housing
Test pipe
450cc injectors (what do you think about these?) *** need PFC or the like to run

Apexi N1 exhaust
Flex-A-Lite Fans ** make sure are dual pushers
Walbro 255 Fuel Pump
Nismo FPR *** know how to adjust line fuel pressure to make it work right
Steel braided turbo lines ** nice but not a basic need
Blitz BC
S-AFC2 *** go with PFC for less trouble and better results
Koyo/Fluidyne Radiator (which one?) ***would suggest Griffen if you can
C’s short shifter ** nice but not a basic need
ACT street/strip clutch
SS clutch line ** nice but not a basic need
LS Automotive Tach gauge ** not a basic need
Oil catch can ** nice but not a basic need
Oil cooler (do I need one and if so, can u recommend a brand?) **any, summitracing.com

Replacement parts-
Power Enterprise Timing Belt
OEM water pump
OEM oil Pump
Power super V-belt
Z32 fuel filter
K&N oil filter
Nismo thermostat
Full rebuild gasket kit
Denso spark plugs (hr-6)


also battery relocation kit so the intercooler piping works is needed

Dakota Digital signal converter 6cyl signal to 4 cyl tach and speedo

don't forget about fluids, gear oil, oil, and antifreeze ran me about $80

also figure in someone doing wiring (like syko)

[1derboy16]

450cc injectors (what do you think about these?) *** need PFC or the like to run
S-AFC2 *** go with PFC for less trouble and better results
Koyo/Fluidyne Radiator (which one?) ***would suggest Griffen if you can

What do you mean by or the like? A s-afc wont be good enough? This is as far as I'm taking this setup so do you still think it will be worth it or an over kill to get the power fc?
Those are the two radiators I'm sticking with, I have a few reasons to back it up but out of the 2 which do you recommend?
Also, what do you think of the 450cc injectors? Will they be a good idea/match?
Thanks for the help, anyone else?

[R33GTS-T]

you don't need to replace the injectors if you want to run in the low 13s and an SAFC will be sufficient for that purpose

you also do not need a dakota digital signal converter, i didn't use one and my speedo/odometer work perfectly fine (for whatever reason i'm drawing a complete blank as to what i used lol)

nismo tranny mounts and ss braided lines are not a necessity, neither is an entire gasket rebuild kit (unless everything is in pieces)

you don't need an OE oil and water pump and thermostat unless the ones on your clip show signs of problems

you also do not need an oil cooler or short shifter and you definitely do NOT need an aftermarket tach lol

i'm still running the original oil pump, water pump, and thermostat in my RB and my car is as reliable as a brand new car. its been a year since my swap and i drive the car every day and autox/road race during the season

do yourself a favor though and pick up a Greddy intake manifold and throttle body adapter. then get the greddy s14 silvia fmic kit and you'll only have to make some minor modifications in order to utilize the piping that is included (that's what we did on my swap)

as for your rad, just go with a koyo, everybody and their mother use them

- Daniel

[kouki_s14]

i posted on your nico thread

Your list looks good,
here are a few changes i suggest:
HKS BOV, blitz leaks at idle (as do most push type), or you can try that new synapse BOV

Test Pipe you really dont need because on S14s the cat is on the downpipe. The thing that looks like a cat under the car is actually a hollow 2.5 inch test pipe. You will see this when you get under the car. I personally use a high flow cat becuase the gas smell was that bad.

Koyo has heat soaked and crack on people using it with RBs i suggest the fluidyne or griffin if you can get your hands on one.

Clutch i recommend exedy or ATS, i never was a big fan of act, but they still make great clutches

You can adjust the tach by yourself pretty easily, just take the cluster apart and adjust it with a philips screwdriver, you can contact Syko performance if you need more help, they helped me with it. You will need something to read the actually rpm as reference though. Doesnt take too long and it saves you $100 from LS auto.

Oil cooler - i dunno setrab? haha expensive parts there. just get good lines and fittings, the core brand isnt that big of a deal.

I personally have a N1 water pump, might as well upgrade if youre going in there.

Oil pump i wouldnt know what to say, just that the N1 oil pump is dam expensive.

I also bought a gasket rebuild kit, but im too lazy to put it to use haha. I might be doing a RB26 soon enough so i might just sell it.

I always use nissan oil filters, again just my perference.

everything else on your list looks good, feel free to contact me for any questions you have about the swap. I'll do my best to help a fellow rb owner




injectors you can go a bit higher, depends on how much boost youre running

and what everyone else said already

[Tenchuu]

What do you mean by or the like? A s-afc wont be good enough? This is as far as I'm taking this setup so do you still think it will be worth it or an over kill to get the power fc?
Those are the two radiators I'm sticking with, I have a few reasons to back it up but out of the 2 which do you recommend?
Also, what do you think of the 450cc injectors? Will they be a good idea/match?
Thanks for the help, anyone else?

It's an opinion that is widely debated on here, a PFC may work, but all the PFC is doing is fooling a computer to use another timeing and fuel map that is pre programed on the stock ECU, for stock everything.

it si not going to use a correct fuel map for your needs if you get into things. like putting a tourniquet on a leg that is cut up, it is going to work OK, but there are better options for better results. search for PFC to read the whole issue on here.

if your not replacing the injectors and just using the AFC to run the BOV atmospheric, i would say the AFC would work find and wouldn't leave you wanting.


GTST, if you remember what you did to make the 4 cyl tach read correct on a 6 cyl pulse? pulled it out and recalibrated it?

[1derboy16]

um, lets see...
I want to get the 450's so I can just push it a little farther.
I might tune with the Safc but not sure yet.
I'm kinda on a budget and this is as far as I'm taking it so I dont think I'm going to upgrade the the greddy manifold. I use to have it on my list but I dont think I'm doing to get it.
I'm also not sure if to go with OEM or N1 parts, I'll see how my motor is but if I need them idk, I might just get normal OEM cuz isnt the N1 stuff like $$$$

[FrankeBonez]

don't really need a battery relocation kit. i use a mazda miata battery, fits in there nice

[eh?]

GTST, if you remember what you did to make the 4 cyl tach read correct on a 6 cyl pulse? pulled it out and recalibrated it?

On the back of the Zenki s14 tach there is an adjustment screw. If you have another source to read rpm you can adjust it to be fairly accurate. I don't know if it's the same case for kouki's.

[kouki_s14]

On the back of the Zenki s14 tach there is an adjustment screw. If you have another source to read rpm you can adjust it to be fairly accurate. I don't know if it's the same case for kouki's.

i said that above, noob ken (jk)
it is the same for kouki

[eh?]

Well apprently he wanted another opionion :p

[1derboy16]

forget about the injectors and S-AFC. I'll do everything first and then install those, I hear I'll be fine with the stock ECU at that point.

[1derboy16]

do you think a yashio radiator would work good? There pretty thin and around the same price.

[kouki_s14]

never heard of yashio making radiators, any more info on this?

[1derboy16]

I know there is a guy on this forum running one, I've seen a few with them. I know the guys name is like norm and drives a green s14 zenki with a navan kit. Anyone else on this topic?

[slow40]

i've never done an rb swap, but i've heard to stick w/ oem thermostats

nismo one is not practical for a dd , i'll look for the thread

[slow40]

here... http://www.skylinesaustralia.com/forums/index.php?showtopic=129502&hl=nismo+thermostat

[Howard92884]

GReddy Intake Mani FTW, will look much cleaner and FMIC piping will be easier.

[vanish1]

If your not going to run a good enough engine management to handle mods then dont even bother. Proper tuning is HUGE, esp with RBs.

Leave everything stock: sidemount, injectors, bov, intake. Stock RB25 w/ a VLSD is good for a 12 sec run.