Smallest Supercharger Pulley Without Intercooling?

[scvs6]

Hey,

I tried doing a search but it doesn't seem to be working at the moment.

With my VS L67, what is the smallest supercharger pulley (PSI) that I can install and run safely without an intercooler?

I would like to get an intercooler, but unfortunately I don't have the time or money to fit one at the moment.

Cheers,
Ben.

[HoZy]

10psi, It's advised to run a cooler with 10psi, But a nice tune will see you sitting fine with that without a cooler.

Cheers
Mat

[scvs6]

10psi, It's advised to run a cooler with 10psi, But a nice tune will see you sitting fine with that without a cooler.

Cheers
Mat

Ok no worries, thanks mate. Yeah i'll get it tuned, and I still might get an intercooler one day, but I can't at this stage.

[monkeys437]

You dont even need a tune with a 10psi, just to run 98 octane. Ive done 80,000ks with my 10psi pulley, 250k on the engine and still going good

[scvs6]

You dont even need a tune with a 10psi, just to run 98 octane. Ive done 80,000ks with my 10psi pulley, 250k on the engine and still going good

Oh ok, I have been filling up with BP Ultimate ever since I fitted the engine. It was recommended by the people that reconditioned the engine.

[Huntington]

You will be fine without a tune at 10psi. I was running one for ages before the cooler.

[monkeys437]

Oh ok, I have been filling up with BP Ultimate ever since I fitted the engine. It was recommended by the people that reconditioned the engine.

I use Mobil 98 or BP Ulitmate. I've heard they are the best stuff and have the most stable octane ratings or something.

[MACE]

10psi pulley on a good working order L67 and quality 98 octane fuel will run all day everyday without any probs

[scvs6]

Fully reconditioned L67, 98 Octane BP Ultimate, can't get much better then that. Thanks for the help guys

[MACE]

Fully reconditioned L67, 98 Octane BP Ultimate, can't get much better then that. Thanks for the help guys

As long as the comp is around standard then you'll be right

[scvs6]

As long as the comp is around standard then you'll be right

Yeah it was fully reconditioned to factory specs

Ill buy the pulley off you once I get my Statesman back from the panel shop, just because i'm not sure how much they are going to charge for the repairs haha.

[MACE]

Ah good

Hopefully the Stato won't be too much

[drift-it]

from the data logging i've done on the calais (10psi) i've noticed that the stock memcal can deal with the extra boost, however in warmer climates ie. townsville the stock memcal gets some wicked knock retard bringing timing down a fair bit! roughly the stock tune will be around 13 however with upto 10degrees k/r i was seeing only 3degrees advance in some runs.

atm im running upto 13degrees advance with no k/r due to the fact i've bumped the fuel up a fair bit! stock memcal afr under WOT were around the 13 mark. now mine sits at 11.6-8.

steve what would be the highest psi a non cooled car could run with a tune? i was thinking maybe 12-13? that will see between 8-10psi for low to mid rpm working its way up to the 12-13 in the higher revs? however you'd only be able to run stuff all advance to cope with the extra boost up top.

[MACE]

from the data logging i've done on the calais (10psi) i've noticed that the stock memcal can deal with the extra boost, however in warmer climates ie. townsville the stock memcal gets some wicked knock retard bringing timing down a fair bit! roughly the stock tune will be around 13 however with upto 10degrees k/r i was seeing only 3degrees advance in some runs.

atm im running upto 13degrees advance with no k/r due to the fact i've bumped the fuel up a fair bit! stock memcal afr under WOT were around the 13 mark. now mine sits at 11.6-8.

steve what would be the highest psi a non cooled car could run with a tune? i was thinking maybe 12-13? that will see between 8-10psi for low to mid rpm working its way up to the 12-13 in the higher revs? however you'd only be able to run stuff all advance to cope with the extra boost up top.

With a tune, standard cam with 1.98:1 rockers, 14psi in Adelaide. FNQ, with the factory air temp gauge (not in the LIM) I would keep it to around 12-13

Cheers,
Steve

[mjd1810]

I run a 12psi pulley uncooled no probs, i have an xu6, always on vpower, 1.9 rockers, mace cai, stock hsv extractors & exhaust.

[adz_vy]

Ever thought of getting a memcal from mace for the 12 psi as your ecu may retard timing to reduce knock hence robbing you of power

[MACE]

I run a 12psi pulley uncooled no probs, i have an xu6, always on vpower, 1.9 rockers, mace cai, stock hsv extractors & exhaust.

mjd1810,

Even though it's not pinging, the knock sensors could be pulling out timing hurting power. In saying this though we should be able to work something out

Cheers,
Steve

[monkeys437]

from the data logging i've done on the calais (10psi) i've noticed that the stock memcal can deal with the extra boost, however in warmer climates ie. townsville the stock memcal gets some wicked knock retard bringing timing down a fair bit! roughly the stock tune will be around 13 however with upto 10degrees k/r i was seeing only 3degrees advance in some runs.

It's not such an issue for us in Melb, but we still get some mad hot days in summer so I drive with a pretty light foot if the temp is in the high 30's or above just in case

[mjd1810]

mjd1810,

Even though it's not pinging, the knock sensors could be pulling out timing hurting power. In saying this though we should be able to work something out

Cheers,
Steve

very interested Steve, please tell me more.

[MACE]

mjd1810,

We basically run a richer mixture to keep the air cooler along with a few other things

Cheers,
Steve