supercharging a vn s2 buick

[Jordo2]

hi guys, just need any info on supercharging my vn s2 buick. i hav a positive displacement type charger. the motor is internally stock and has only done 76000ks since gm built it, i will b running 8psi, i have a modded tune to suit and 2 bar map sensor. will i need double valve springs? ive been told that the charged ecotech uses standard springs?, but dont know how reliable this info is? how tuff are genuine head gaskets with boost added? cheers.

[needwork2-4fillhabbit]

The gaskets should do fine if the tune is good and isnt going to make it to lean, If your going to run 8psi do you have new injectors (bigger) and the tune to suit the injectors?

[GetToDaChopa]

Don't you need a different fuel pump as well? To give it that extra fuel.

[scouser king]

hi guys, just need any info on supercharging my vn s2 buick. i hav a positive displacement type charger. the motor is internally stock and has only done 76000ks since gm built it, i will b running 8psi, i have a modded tune to suit and 2 bar map sensor. will i need double valve springs? ive been told that the charged ecotech uses standard springs?, but dont know how reliable this info is? how tuff are genuine head gaskets with boost added? cheers.

mate i have a vp running a powerdyne blower only@5psi .YOU will need least 36Lb S/C injectors and 044 in-tank pump if you plan on getting serious and keeping it alive motor you dont want it to lean out ,that a good way kill things .Oh get it tuned,i had one of ''pre tunned ecu chips'' it goes out the window when you change injectors and fule pump.

[Bz Kn33z]

My blower is running 5psi atm, and i am using bluetop injectors that would be fine for that but anything over 5-6psi they would be to small, get some supercharged Vt V6 injectors. Are you intercooling it because it should be intercooled at 8psi or you will wreck shit.

[stocky]

if youre interested in injectors, speak to me. i have my set laying around from my 9PSI VN setup. used for a year and now theyre sitting in a box doing nothing.

youll get mixed opinions on needing a bigger fuel pump. i never had an issue with the standard one. i did my valve springs. noticed a little bit of difference above 80km/h or so. headgaskets should be ok as long as your tune is good

[Jordo2]

yes i do hav bigger inj, and correct me if im wrong, but i dont think this type of charger can b intercooled? is intercooling an absolute must at 8psi onward? if so,
would i get away with a functional bonnet scoop? about wot sort of pwr can i expect from 8psi? engine has 70mm throt bod, extractors and system, and propper cai. [not that cheap shit]. box has corvatte servo and sum other sml mod.

[needwork2-4fillhabbit]

My guess if the engine is good maybe 170-185. Intercooler should be used as you will only blow your engine in the long run ask stig. Bonnet scoop would be handy to just to help heat escape.

[Bz Kn33z]

Mate 6-7psi uncooled is pushing it even with a good tune, 8psi is really asking for it, why cant you intercool it?, could you put some pictures up of your setup, is it a top mount?
If your not intercooling it you shouldnt give it to much shit like i said stuff will be break within no time.

[Jordo2]

Mate 6-7psi uncooled is pushing it even with a good tune, 8psi is really asking for it, why cant you intercool it?, could you put some pictures up of your setup, is it a top mount?
If your not intercooling it you shouldnt give it to much shit like i said stuff will be break within no time.

sorry mate im old and dont kno how to post pics up. lol. but the charger is a top mount style. how do u intercool one of them?

[Jordo2]

My guess if the engine is good maybe 170-185. Intercooler should be used as you will only blow your engine in the long run ask stig. Bonnet scoop would be handy to just to help heat escape.

would that be rear wheel or flywheel? if a cooler set up isnt available, perhaps i could use water inj?

[Jordo2]

if youre interested in injectors, speak to me. i have my set laying around from my 9PSI VN setup. used for a year and now theyre sitting in a box doing nothing.

youll get mixed opinions on needing a bigger fuel pump. i never had an issue with the standard one. i did my valve springs. noticed a little bit of difference above 80km/h or so. headgaskets should be ok as long as your tune is good

thanx mate. if i end up needing the inj i'll let u kno.

[Bz Kn33z]

i got 154rwkw on 4.8psi unintercooled, intercooled and new tune will make abit more power.

[Jordo2]

i got 154rwkw on 4.8psi unintercooled, intercooled and new tune will make abit more power.

thats pretty good at 4.8. wot other mods has urs got apart from the charger? and did u get a different tune?

[Jordo2]

mate i have a vp running a powerdyne blower only@5psi .YOU will need least 36Lb S/C injectors and 044 in-tank pump if you plan on getting serious and keeping it alive motor you dont want it to lean out ,that a good way kill things .Oh get it tuned,i had one of ''pre tunned ecu chips'' it goes out the window when you change injectors and fule pump.

i dont kno how much bigger my inj are, but will definately get onto the 044 pump. i guess a decent reg aswell.

[Jordo2]

does anyone kno where i can get, or who i can contact to get hold of a tune to suit 8psi? perhaps someone out there has one they no longer use? im in useless w.a and there are no good tuners here. and none that i kno of that do the delco type memcal ones?.

[needwork2-4fillhabbit]

Delcowizzid or greenfoam both do tunes on this forum one will be easier to contact (ill let you find out who). Jordo im thinking with just bigger injectors your pretty covered, depending on what size injectors of course, if there small enough that they might lean out id get a rising rate but if the injectors are like 32lb you would be fine and the fuel pump is only a precautionary measure?

[VN Wagz]

Hi mate,

Boostedwag on the SC forum made almost 300rwkW with stock headgaskets, with a turbo on 19psi. So dont worry bout yours!! If the tune is safe, stock gaskets are no issue. However, if you do blow a set, replace em with ACL Race Series Gaskets (its what im running) or Cometic... however, a dodgey/lean/too far advanced setup will kill any gaskets you install.

Stock vavle springs are also fine for your application. They'll only really cause issues if you change to a higher lift cam, or if you intend turning the engine to more than 6300, which is useless anyhow- the PD blower you have should remove any need for hardcore RPM.

For fuel pump, Walbor GSS341 in tank is what a lot of people use, its got enough flow (with 42lb injectors) for 320+rwkW, and they go for 180ish online. However for your application, 36lb super-6 injectors are the best bet if only running 8psi. Also may be best to get a boost-referenced fuel pressure regulator like a Malpassi or turbosmart reg...

Also, a proper Kalmaker retune of the Delco ECU should be done as a minimum, and if your budget stretches, something like a Haltech E6GMX with custom tune...

good luck with it man, hope it all comes together well

[needwork2-4fillhabbit]

Vn wagz is yours runnin? Got any vids?

[VN Wagz]

yes i do hav bigger inj, and correct me if im wrong, but i dont think this type of charger can b intercooled? is intercooling an absolute must at 8psi onward?

if the blower is hung off the side of the motor (like the CRS setup), then it can be intercooled with some tricky pipework routing. If it sits on top of the engine, there is no real way to do it unless you hook up a custom water to air to sit underneath, but thats the domain of rich bastards of those who already own super6s....

But yes, intercooling (above 5psi) is needed. And intercooling is the BEST way to make your car:

a) run cool, use less fuel.
b) make madddd torque (which is what makes a car fast)

A mate of mine has an Ecotec (VS), with a PD blower (toyota SC14)- was making 170rwkW on 8psi uncooled. With a cooler in place the end result was 180rwkW, but the torque gains from 2000- 5000+ were huge- picked up 40% more torque almost all over from the cooling.... car is ridiculously faster now, even if it was "only 10kW" gain.

I ran my wagon (S2 VN) without a cooler whilst settiing up the turbo, on 5psi the heat coming out of the turbo compressor when it spooled was considerable... and a PD blower is going to be generating a lot of more heat that any turbo...

But look, im ranting now LOL...

[VN Wagz]

my car is actually running, stock tune on 5psi, with extra fuel pressure. Hauls arse

In saying that tho, i have the injectors, bigger fuel pump, 2 BAR map and all that ready to go... retune soon on 10psi... when i get a new (non shredded gearbox)

[orlando]

anyone know if i can fit an m90 to a vn S1. Is there a manifold available?

[delcowizzid]

there was a 3800 with M90 forsale over here not long ago but it was a custom modified stock intake manifold ill try find a pic

[Jordo2]

Delcowizzid or greenfoam both do tunes on this forum one will be easier to contact (ill let you find out who). Jordo im thinking with just bigger injectors your pretty covered, depending on what size injectors of course, if there small enough that they might lean out id get a rising rate but if the injectors are like 32lb you would be fine and the fuel pump is only a precautionary measure?

thanks for that, will try to contact them.

[Jordo2]

Hi mate,

Boostedwag on the SC forum made almost 300rwkW with stock headgaskets, with a turbo on 19psi. So dont worry bout yours!! If the tune is safe, stock gaskets are no issue. However, if you do blow a set, replace em with ACL Race Series Gaskets (its what im running) or Cometic... however, a dodgey/lean/too far advanced setup will kill any gaskets you install.

Stock vavle springs are also fine for your application. They'll only really cause issues if you change to a higher lift cam, or if you intend turning the engine to more than 6300, which is useless anyhow- the PD blower you have should remove any need for hardcore RPM.

For fuel pump, Walbor GSS341 in tank is what a lot of people use, its got enough flow (with 42lb injectors) for 320+rwkW, and they go for 180ish online. However for your application, 36lb super-6 injectors are the best bet if only running 8psi. Also may be best to get a boost-referenced fuel pressure regulator like a Malpassi or turbosmart reg...

Also, a proper Kalmaker retune of the Delco ECU should be done as a minimum, and if your budget stretches, something like a Haltech E6GMX with custom tune...

good luck with it man, hope it all comes together well

cheers mate, will check on all those things b4 i sort the tune.