Highflowing Stock Injectors

[bloodsword27]

hey, had a search and havent found anything, but to the point, im looking for an injector upgrade up to 600cc. considered getting the usual nismo's or sard's but wondering what were the pro's and con's of getting the stocko's highflowed? it will be for an RB25DET series 1 which i believe are to be low impedence.

ive heard that by highflowing (read: drilling out) injectors may cause the spray pattern to be uneven, therefor altering its efficiency. have also heard of a company called deutchworks (or something alike of that name) which seem to have an alright name over in the UK.....

problem: $$$ (dont we all?)

up side: have some $ , not alot, chasing to support 300rwkw, new, 2nd handies....swaps?...

in need of opinions and some light shon in the right direction

[Mr. Untouchable]

well I've done a lot of reading up on hi flows. A lot of people hate them, and some people blame them for blown motors, as where some guys love them.

to keep it short, i think they are a good option if you are on a budget, but do get them from deutchworks or someone reputable. RacePace in melb modify them, and have had great success with them. and they flow test them in house.

as i said some love them some hate them, im not going into atomization etc.

sometimes they idle a bit doggy. but its the price you pay for not going all out.

One thing i will say, buying second hand injectors all together doesnt work out so cheap. seen many guys caught out, and i have been too.

if you pay 600 odd dallars for a set of 6. keep in mind the average price to clean/bath and flow test and check for seized/leaking injectors is going to be 150 - 200 dollars. then, stick 25 bux on that for new top and lower o-rings and your up around $800. and if you are unlucky and get landed with a dud...... [end of the world x10, almost as bad as coming home to find you dont actually have beer in the fridge on that uber hot day]

a set of new sard 850's are arond 920 - 930 with collars and plugs.

if you can get a set that are good for a resonabable price, great. if not Sard 850cc items are IMO the best option.

cheers

Edited January 25, 2009 by Mr. Untouchable

[bloodsword27]

850's aye?....well i was considering going for nismo 740's but tunerhas told me get something more suited to my power goal seeing as im not looking to upgrade that anymore from what i have. only need injectors cos ive maxed mine out and will be running a new tune with my next ECU which ive already purchased

[dori34]

dom, have you found any places in syd that can do this?? i wanna get this done but havent found any reputable places.

[Pal]

i asked about doing this to my tuner, he slapped me and told me to get real ones, still saving. i think dirtgarage does them in sydney

Edited January 25, 2009 by Pal

[Liz]

I think they're worth looking into.. I'm getting 740cc high flowed injectors and the place where my tuner/mechanic is getting them from flow tests and electronically analysis the spray pattern before they get sent out again... .and the spray pattern can be altered to suit.

I guess just like anything else, it'll depend on where you get it done.

Liz.

[bloodsword27]

yea wherever i get the job done i'll make sure it comes with a flow test and spray pattern equivalent between each injector. if Dirtgarage does them at a good price for a good job then that would be awesome! group buy anyone? lol i was going to get Micks Motorsports to do it for me seeing as he is onlyt 10mins away from home

where are you getting the job done at Liz?

[Pal]

sorry its created motorsports, think they quoted me like 700 bux to get done

[R.3.2.G.T.R]

for around $500-600 you can pick up second-hand set of sard 700cc or equiv that has already been cleaned and flowed.. i picked mine for $500 delivered

[dori34]

sorry its created motorsports, think they quoted me like 700 bux to get done

rather buy 2nd hand ones instead!!!!!

[bloodsword27]

same, but still worried about getting a dud set, and id probs still get them flow tested.....my quote was only $500 :S ....worthwhile? not sure if he does flow testing either but i'll find out

[l0WRB]

mine are highflowed, have been for 2yrs now, done 30,000kms or more, makes 250kw and only cost me $120 to highflow them....and they are around the 800cc mark, do 16ltr/100 round town and 10ltr/100 on highway running a link.. cant complain anyway.

[bloodsword27]

where'd u get them done juz?...16L !?!?!? shiznits thats alot lol and i thought my 15L/100km was bad due to the aggressive jap tune

[Liz]

yea wherever i get the job done i'll make sure it comes with a flow test and spray pattern equivalent between each injector. if Dirtgarage does them at a good price for a good job then that would be awesome! group buy anyone? lol i was going to get Micks Motorsports to do it for me seeing as he is onlyt 10mins away from home

where are you getting the job done at Liz?

My melb mechanic is arranging it for me so I'm not sure where he's going. Sorry!

Drop me a pm if you'd really like to know more details!

[SDEWY5]

Mate of mine got his hi flowed to 620, theyre now in my car. Watched the process of how theyre done, cleaned then flow tested. In seeing it done it gives me plenty more confidence in the process. Also while we were there he flow tested a set of sard 550's that a customer had brought in. One of them was out by nearly 10%. Said that sort of thing is actually not that uncommon. So i guess its all up to the luck of the draw sadly...interesting but.

[Liz]

that's interesting to know

[allthewaytotheskyline]

so where have ppl gotten there injectors highflowed before??

somewhere in sydney would be more choice!

[bloodsword27]

well should i start a GB?,....can talk to the guy im thinkn of doing it with. he's quoted $500 so far but not 100% sure wat it includes :S

[W0rp3D]

My melb mechanic is arranging it for me so I'm not sure where he's going. Sorry!

Drop me a pm if you'd really like to know more details!

I wouldnt mind knowing that as well, i got a cheap set of injectors for 200 or 250 cant remember was told there 650cc items, took them to trent at status and he said there deutch works hi flows, want to get them cleaned an tested before i put them back in, will post up results when i have had it done, still looking for some were to do it.

[R31Nismoid]

You could always get S15 440's and just increase the base pressure to get you what you need.

300rwkw will be achiveable with a FPR & 440's.

GTR injectors are 440's and ive been told i could either keep my injectors for 300rwkw, and increase the fuel.

Or put injectors in... being i have injectors i think ill just use em.

Also RB25 370's can get to around 240-250rwkw safely with a FPR + base pressure bump

I see no reason the 440's couldnt make the distance

If you can get away with only upping the base pressure by a few PSI (you'll have to see how you go), you should be right.

Although you just wont have any room left what so ever where the 600cc's you'll still have a bit if you wanted it.

Its not the best method, but certainly the cheapest and will work.

Then if your worried about the cost of injectors i wouldnt be chasing 300rwkw and expecting it to last, which will give you a nice rebuild bill eventually.

Not many stock RB25's have seen 300rwkw for 3-5 years and lived to tell the tale