Just curious, I saw this thread here which made me curious. I'm thinking about swapping in SR20 injectors, Throttle Body (port matched of course) and MAF (or 240 MAF if that would be better) and running an S-AFC... what problems or benefits do you guys think this would produce. I have given up on my plan to turbo the GA so this would be an NA car with I/H/E and I've read that the stock injectors only run around 120 whp or something like that... I know theres no way I'm near 120 whp but do you think doing this upgrade would help in any way at all? thanks in advance -James
alright, I'm gonna request a bump on this... I dont think this has been done (to a NA ga at least) so I'm now just asking *theoretically* will this help any? thanks, James.
James I was also thinking about this but i ran into some issues. THe S-AFC would cost a pretty penny to fine tune.
I was thinking of boring out the stock throttle body and intake manifold because for those of us with a HS CAI, dont forget that the first pipe is 2.5" and the SR20 TB is 3" I believe, so we would need the SR20 short ram intake pipe.
I suggest you get a lightened crank pulley, its a great buy for less than $200.
i think the SAFC is totally worth it. my friend with a Prelude got his car dynoed/tuned with it and he gained 12 horsepower and around 8 torque. He only has a AEM Short Ram and a GReddy Evo. I was VERY impressed with the results and i'm still watching eBay and other places for a good price
__________________
'04 Cloud White SE-R Spec V :waving:
I think I'm going to go to a junk yard and roll with this idea within the next 4 months (maybe 6, being honest and reasonable, beer money still comes first ) I will try this, and try to hit up a dyno both before and after, as well as tune with a S-AFC... Thanks for the reply's -James
you know, you could always see if any shops or people around where you live have a wideband 02 you might be able to rent out...theres a kid here in tallahassee that rents out his wideband for $50...then for another $50, he street tunes your safc, instead of dyno tuning, whick is usually around $120 per hour here ...see if anyone has those abilities where you live...
__________________
95 200sx se. sr20de, gt28r, bb manifold, forge fmic, greddy bov and bc, tial 38mm, walbro 255, apexi tt, 3" exhaust with magnaflow, 3" downpipe, jgy clutch flywheel and fuel rail, msd 50#'s, cobra maf, jwt ecu and s4's, nismo fpr, autometer, nissport adaptors, fal pushers, ur pulley, m/t 22x8x15 et drags.
Just curious, I saw this thread here which made me curious. I'm thinking about swapping in SR20 injectors, Throttle Body (port matched of course) and MAF (or 240 MAF if that would be better) and running an S-AFC... what problems or benefits do you guys think this would produce. I have given up on my plan to turbo the GA so this would be an NA car with I/H/E and I've read that the stock injectors only run around 120 whp or something like that... I know theres no way I'm near 120 whp but do you think doing this upgrade would help in any way at all? thanks in advance -James
No No NO!!!! SR20 Injectors will not go into a CA16. They use a diffrent mounting system. As for the throttlebody....just use a generic Ford/GM one and get it matched up....Don't go to the expense of a SR20 one.....piss easy....I used a Ford Falcon 68mm one bored out to 70mm for my RB30E..
Why do people love the SR engines and think every bit of them is gold.....grrrrrrrrrrrrrr
You can squeese a bit more out of your stock injectors by getting a riseing rate fuel regulator and a extra inline fuel pump. Also another option is to add a extra injector or water injection to keep the detonation away.....
As far as computers and AFM meters go just get a Motec, Microtech, wolf3d instead to a S-AFC....just because its jap doesn't mean its better. Plus they are laptop tuneable etc.....
Turbo? meh go the supercharger.....
__________________
Holden VL Commodore Calais......a domestic Aussie car thats RB Nissan powered (From the factory) and hated by Australian domestic people and Japanese import people alike, due to its mixed heritage.....*sigh* I can't win can I?
Last edited by Nizmodore : Jan 7th, 2004 at 12:35 AM.
First of all, SR20 injectors will fit on a (and its GA16, not CA16). I believe most if not all nissan injectors will interchange.
The SR20 engine IMO and im sure others as well, is one of the best engines to work and modify. In all honesty, please dont contribute when it is apparent that you dont know jack about the GA16DE engine. Supercharger?? they dont make one for our engine. But this is not the issue please dont go
I just think we should get the I/H/E, crank pulley, JWT cams, JWT ECU (to optimize the cams), port and polish, the help of fluids like water wetter (it does work), then add the 240sx MAF, the bigger throttle body, and injectors.
One thing i was thinking about. A 2.25" exhaust system is optimal on the Sr20 engine which puts out about 120-125 HP at the crank stock. Now im thinking, if my GA16 is putting out those same numbers (theoretically), shouldnt I be able to gain some horsepower??
the reason I sait SR20 parts is because they are cheap and easy to find, I could find injectors, tb and maf all for under 100 bucks and all should be *almost* direct bolt on, they wouldnt need too much work.
I am talking about a GA16 engine, not a CA16 engine... and yes yes yes the injectors will fit I dont think of a Sr20 parts as gold, but for a sentra they are cheap practical upgrades, I was thinking about using injectors, tb and maf off of an altima (KA24) or spec-v (QR25) but I dont know anything about those two motors and the possibility of uncompatibility is too risky which is why I think the SR would be best suited for this.
and the reason for an S-AFC? no reason, I just felt like that would be my best option at this point, but I will look into an AFM meter...
and as far as the supercharger, since there isnt one I dont think I'll go with one... I think you think I have a different engine than I do. :-D
oh and chris, I will eventually go crank pulley, of course, but I'm still debating on the other parts... depends on where I want to go with the car, the good thing about this upgrade (the maf/injector/tb) is that if I go turbo, I can keep them, whereas if I do a cam/ecu upgrade, I'd have to reupgrade to the turbo cams and turbo ecu = not monitarily good...
hrmm, I read the whole thing, but something seems wrong... the fact the stock GA injectors max out at 116 whp (theoretically) would make one assume larger injectors would help out the car a great bit, especially when nearing the 116 whp mark (if injector flow to hp rating are on a curve) Anyway I still think using SR injectors would be benificial if matched with some sort of air to fuel controlling device, which mathermotorsport wasnt using at that point.
A second question I have, the local junkyard has altima's but not 240sx's, would an altima and 240sx use the same maf? also would using an altima maf be beneficial? and lastly what how big are altima injectors? thanks -James
Sorry I ment GA not CA....a typo there ....I was talking injector impedance, eg 2 ohm 4ohm etc. Also it depends on the mounting system, as some Nissan injectors are top feed (CA and RB) , while others are side feed (eg SR20)....even if they use the same feed system, you have to make sure your ECU can drive the injectors (eg 2ohm, 16ohm)
And no not all Nissn injectors will interchange, eg CA and RB ones won't due to diffrent injector impedance, even when they are the same feed system and physical size....
Also with the blower idea, I know they don't make one...hell they don't even make one for my engine, but I adapted a small Toyota blower for my engine. Wheres your creativity? This bloke wants more power, whats wrong with a few diffrent ideas? The turbo is not the be all of performance.....and whats really wrong with haveing a non Nissan part in his car.....
There are other ways to get more fuel in your cylinders, eg putting a pot across your engines temp sensor (the computer one, not the gauge one!) to richen up the mixture, also a pot on your Oxygen sensor, so the computer adjusts the mixtures rich/lean as much as you want it.....
The 3 basic things you need to remeber to get a powerful N/A engine are as follows (the 3 C's):
Cams
Carb (Injectors/Throttlebodys)
Compression
__________________
Holden VL Commodore Calais......a domestic Aussie car thats RB Nissan powered (From the factory) and hated by Australian domestic people and Japanese import people alike, due to its mixed heritage.....*sigh* I can't win can I?
I know the side feed injectors should fit because its been done before, even the 370cc injectors will fit my GA, although i dont think i'll be needing them. I never said there was anything wrong with creativity, its just me and James (dryboy) dont want to waste money on products that may or may not work.
THe pot idea doesnt sound half bad but ill have to look into it. I dont know enough about air fuel mixtures to be messing around with them, all i know is that if i fuck around, there goes my engine.
I understand the TB but why the MAF and Injectors. There is NO power increase to be had and it'll be a bear to tune yourself with the SAFC. The stock MAF (which doe not reduce in size on B14's) and stock GA injectors will support the IHE, head work and cams setup. No issues with my car when it was that way before turbo.
) I will try this, and try to hit up a dyno both before and after, as well as tune with a S-AFC... Thanks for the reply's -James
...see if anyone has those abilities where you live...
