Buick injectors - upgrade?

[Fenix_Longbow]

Hi guys,

How much room do the stock injectors have for increased duty cycle? Im only really familiar with Japanese side of things and i have a set of brand new SARD 650cc injectors. I know its unlikely they are the wrong sort but i just wanted to pose the question:

Do they need upgrading? Would it help to upgrade them and what sort would you replace them with?

Thanks gents

[wraith]

Unless your going forced induction no need to swap them out.

[Jxw]

Bosch | Technical Fuel Injectors | Bullet Performance Racing
vn/vp v6 280 150 917 (lblue tops)
vr v6 280 150 960 (black tops)

as above no point replacing for n/a applications

[Fenix_Longbow]

Well that was easily sorted!

Car is rather mild: pacies, exhaust, CAI, larger TB, would like a larger cam and higher ratio roller rockers in the future with a ECU tune...

Another question is: if you have a fully rebuilt auto tranny, extra clutch pack, heavy duty, stainless steel piston, kevlar bands, corvette servo and shift kitted - would this impact on the tune of a PCM from MACE for example? or would it not matter?

[Jxw]

shouldn't really matter although getting a custom tune to suit the gearbox would be nice but stock tuning should be ok
i've heard from trans ppl in the past that replacing the sun gear shell is advisable also, not uncommon to do all this work to a g/box and then it fails, for the sake of an extra $60-$80 in parts worth it.

[Fenix_Longbow]

Was replaced as well. A good friend of mine works at Campbelltown Automatic transmissions he looked after me and is quite the perfectionist I would highly recommend them. His son has a 355 stroked turbo VS... Look like a sleeper but on 9 psi was something over 500rwhp... That was still before the main tune and run-in :P

To be honest i dont know much about the internals of the auto trans... Familiar with the manual though.

At least its good to know about the tune... Has anybody here used Gentech in canberra for a custom tune and dyno? I was quoted approx$460 for before/after and tuning. What do u guys think? Its just that this place is the closest to me as i live Around the Young area now bout an hour from wagga wagga

[Jxw]

have a look over the forums, there's a few people that have been tuning the delco's for a while and would be able to tell you what is best, as it's basically still a stock engine with a few bolt ons personally i wouldn't be dyno tuning it just yet till you did the cam and rockers....

[Fenix_Longbow]

Fair call

I will ask Steve from Mace but who has a cam and rockers package? Is it better for just a larger Cam or the rockers? This also may seem a silly question, but after all these kind of mods and a proper tune, what would the fuel economy be like?

[wraith]

Mace do a really good cam and tune package. Wouldn't bother with rockers if your going cam.

[VRCALAISS]

i changed mine to vt ones increased pressure 3.0 to 3.5,the car idles better an runs a bit better that's all.

[wraith]

i changed mine to vt ones increased pressure 3.0 to 3.5,the car idles better an runs a bit better that's all.

Lol the injectors are the same from memory only the fpr is different.

[VRCALAISS]

Lol the injectors are the same from memory only the fpr is different.

pressure an spray pattern is different.no gains in killerwasp,but runs better.

i believe the VT injectors run a higher fuel rail pressure. from memory VN-VS was 3 bar and VT onwards was 3.5bar for the V6. not sure what the V8's use

VT injectors into buick V6?

[wraith]

Ah well there you go. Yeah I was aware about the lower spray pressure.

[The1]

I personally wouldn't run vt ones in a Vr, different ohm's may not run 100%, They make a good upgrade for VS V6's though, EV1 to EV6 better atomization, the EV6 are director plate so adapt to different pressure's better than EV1.

19.92 LB/HR 204 CC/MIN 150.58 G/MIN 14.5 Ohm 3.0bar OP
21.44 LB/HR 219.85 CC/MIN 162 G/MIN 12 Ohm 3.5bar OP

[The1]

pressure an spray pattern is different.no gains in killerwasp,but runs better.


VT injectors into buick V6?

Greenfoams post? would be because of the impedance difference, this can play havok with the injector drivers in the ecu

[wraith]

I personally wouldn't run vt ones in a Vr, different ohm's may not run 100%, rich, They make a good upgrade for VS V6's though, EV1 to EV6 better atomization, the EV6 are director plate so adapt to different pressure's better than EV1.

19.92 LB/HR 204 CC/MIN 150.58 G/MIN 14.5 Ohm 3.0bar OP
21.44 LB/HR 219.85 CC/MIN 162 G/MIN 12 Ohm 3.5bar OP

Will get some VT one's before I grab a tune off you then. Just going to swap out injectors when I put the spacers in.

[VRCALAISS]

Greenfoams post? would be because of the impedance difference, this can play havok with the injector drivers in the ecu

does that mean memcal should be re-tuned?

[The1]

if you want reman ones injectorco on ebay the guy i know does a good job, used them on a few cars $120 i think atm, some use another guy who sells the brand new cheapies some on here swear by them though i have no idea what there like and have not tested them.

[The1]

does that mean memcal should be re-tuned?

No the mosfets in the ecu itself that drives the injectors are rated for a resistance/output, putting different injectors in with different resistance may cause them to overheat or become erratic (usually with higher resistance), though ecu's are a dime a dozzen so it doesn't worry most people.

[VRCALAISS]

No the mosfets in the ecu itself that drives the injectors are rated for a resistance/output, putting different injectors in with different resistance may cause them to overheat or become erratic (usually with higher resistance), though ecu's are a dime a dozzen so it doesn't worry most people.

i see,i haven't had any problems yet lol,i've already replaced my ecu once,the one i have now has some performance shop sticker on it,i've got a feeling the properties on have been changed before hahaha.

[L67 Calais]

if you want reman ones injectorco on ebay the guy i know does a good job, used them on a few cars $120 i think atm, some use another guy who sells the brand new cheapies some on here swear by them though i have no idea what there like and have not tested them.

Are you able to provide a link to a set of this guy's injectors? I'm keen.......

[wraith]

Are you able to provide a link to a set of this guy's injectors? I'm keen.......

Doesn't look like he does the super 6 injectors.

[The1]

here's a link to a set of VT injectors, he gives a written flow sheet and fully remans them 6months warranty, he remans whatever he gets in, so im sure if you sent him a set he could reman them.

Remanufactured Holden VT VX VY V6 Bosch Fuel Injectors | eBay

[wraith]

Super 6 injectors are different from normal V6 injectors though which is what I was trying to point out.

[The1]

yeh i know, as i mentioned he could reman them if he had some come in.