going from side fed to top fed

[godspeed]

hey whats up, ok so what i want to know is can you get an aftermarket fuel rail to work top fed fuel injectors, i have read that top fed is better, but the main reasons is because i have also read that the stock fuel rail sucks and top fed injectors are cheap and real easy to come by in japan.

[christopher]

Hmm......

I would be curious about that too, I have never heard that the stock fuel rail sucks. I would imagine that a new fuel rail would not change the orientation of your fuel injectors to the block though. I could be wrong, that is an area of technical work I don't know much about yet.

[James]

Yeah I've heard the stock fuel rail suck....I'm not sure fo it limitation though, I've only seen one fuel rail package that changes the injector type and that is the boarder one, don't know anything bout it though.-James

[bp2ooo]

hks makes a fuel rail kit. but i only think they suggest it after like 450 hp. I think i have seen it on phase2motortrend.com

[bp2ooo]

http://www.phase2motortrend.com/hkss13sr20de.html

there is link, and its only suggested for over 400hp and you can use top feeds with it.

[pampadori]

i've got a topfeed fuel rail. i can has all the brackets and all for use on the sr fwd or rwd. also fits ka24de. nice bore size. i'm using msd 50lbs injectors. they can be foundfor about $65 a piece. jwt makes a topfeed rail also, but it cost more then the one i got. go to http://www.jgycustoms.com and click on products to see pics.shaun

[Dori Dori]

pampadori, I see that you are using a k3t. If you don't mind me asking, how do you like it? Are you using the blitz kit or just the manifold (tubular?) or is it custom? I'm curious b/c I'm thinking about using this turbo. Any numbers? Thanks.

[Cyberkreig]

pampadori -- what size MSD injectors would be comparable to stock? Would like to do a top feed at stock flow.. so i can upgrade later.

[BuudWeizErr]

I don't think it's because the SR fuel rail sucks, it's more because top feed injectors are much cheaper and easier to get. But yeah, if you're pushing big numbers, a better fuel rail is probably smart.

[godspeed]

so this rail will work with sard, gtr or nismo injectors? where did you get the one for $65???

[pampadori]

this response will be for the last three posts....the $65 was for each injector. the nismo, sard and most other injectors are expensive. this rail fits top feed injectors made by msd. if the other top feeds are the same legnth, then yes it will probably fit them too.

something around 35lbs would be stock sized. why get so small though? just get the rail when you get bigger injectors. larger then 50lbs are usually low impedance and require a resistor inline of each injector. i'm going to go for 72lbs injectors oneday. i'm at 90% duty already.

the k3t i have is not a blitz. from what i can tell, its a sard turbo kit. it came with a huge wastegate that was bad, and a slightly cracked equal length manifold. the manifold isn't too bad though. it doesn't have any welds in the runners, which is a problem anyway so thats a good thing. the k3t is laggy imo. i'm not sure about the shape of mine. perhaps a rebuild would help me a lot. its a good size turbo and makes 10psi by 3500. full boost is 20psi at 3800 or so. in first its more like 4200. i think i'm making about 370rwhp without n2o. the tuning isn't great, and the motor is getting weak more then likely as it has been in 4 cars in the last 5 years and been beat on the last 20000 miles.thats okay, i've got two other blocks that should be good for much more power. :ylsuper

[Dori Dori]

Thanks.

[godspeed]

actually i can get a set of four sard injectors...side fed for around $330 new....but im looking for used injectors, they are around $100 but im just checking out my options

[godspeed]

actually i just checked and found some sard injectors listed at around $160...but it could go up, its on a japanese auction site, but injectors haven't been getting that many bids

[I H8 UR DSM]

are you talking about buying used injectors?

[James]

Godspeed, you could be our hommies if you can get nasty injectors from Japan for much cheaper. So I'm guessing that I need a Rail though cause I'm def. going for at least 400whp.-James

[godspeed]

yeah, i was looking into buying used ones but for a set of four sard 550cc injectors at $160...i might do that, as for hooking you guys up, yeah sure, im in the proccess of translatting the japanese web auction site so that i understand everything but give me about a week and i can maybe hook some of you guys up

[godspeed]

does anyone know of anyone who sells sard injectors...im trying to find out how much i should pay...its and auction

[mister2dt]

while you are over there, see if you can find one of these, Ikeya sequential shifte kit for silvia, 180sx.http://www.takakaira.com/asp/t...d=663

[midnight brother]

importfan.com has the ikeya sequential shifter...big waste of 10k to me

[mister2dt]

takakaira sells them for 981.00 usd. where did 10k come from? i just qanted to see if they were cheaper in store in japan.

[Onizuka]

importfan tends to be a bit "pricey"

[godspeed]

man i can't get that link to work...but im on a damn mac...i hate mac's!!!! its free though, can you give me more info on it...it sounds heavy so i'm sure shipping will cost, it cost around $100 to ship a turbo

[meggala]

btw I have a friend who is making around 550-600 hp on an sr useing the stock fuel rail with 740 nismo side feed injectorsinjector 3037s running 1.8 barmeggala

[QuinGarcia]

SO I am running a redtop with Electromotive TEC-3 fuel injection. I am only running 13 psi of boost, but I want low impedance injectors. I want the low impedance injectors because the tec-3 can control them very well, and I am highly concerned with mileage because this engine will be used in a competition vehilce. Do you all know of any low impedance injectors that will offer a bit greater flow than the stock 370cc/min(35.2lbs/hour) injectors? For simplicity's sake I would like to keep my stock fuel rail cuz I wont ever be pushing for more than 300hp, so Id like side-feed, low impedance injectors to fit the stock fuel rail. And I figure I need less than 500cc min. I know that Nissan sells side feeds (like the 300zx) that flow more than my current setup, but I doubt they are lowe impedance. Any help would be greatly appreciated.

[cnichols]

The only side-feed low impedance injector I've seen (because I don't look for them) is from HKS for the 1JZ/2JZ. I don't know if it would fit the stock fuel rail or not. I wouldn't chance it and stick with the high impedance.

I'm going to be using a TEC III on my SR, and was planning on 740 or 850cc high impedance injectors in the stock fuel rail. Why are you set on low impedance?

[QuinGarcia]

I just know there are several advantages to low impedance injectors, and I am replacing my injectors, so I figured Id make the upgrade. But it looks like it's gonna be too much hassle, so I'll prolly just stick with the high impedance. Do you know of any high impedance side feed that will fit the stock fuel rail, and flow between 450 and 500cc/min? I want to retain a nice lean idle, but still be able to support 15 psi, and I figured that range is about the right injector size, whaddya think?

[Onizuka]

s15 sr20det 480cc injectors (manual transmission SR only*)tomei 550ccnismo 555cc

[TruboostPerformance]

Well there is a lot of companies that sell fuel rails for top feed, JGY like said before, Heavy Throttle has one too, they are both compariable in pricing, JGY is 130, and HT is 150, there are a few others about the same price, so its cheaper to buy a aftermarket fuel rail and injectors then buying NISMO SARD or whatever else, usually all these sell for like 500 plus for just the injectors.