Z33ART V-Mount SC+ 928M Billet Impeller=414whp
10-03-2008, 01:23 PM
#22
alright!!! everybody knows how i like to be a ginue pig " Si-trim project ", "non revup cog pulleys on a rev-up project" BTW both of those endevors cost me about 3.5k when all was said and done!!! so now i want to give this impeller a try on my setup. I LOVE TO WASTE MONEY GOD DAMMIT !!!!! i guess i will give this a try before i step up to the T-trim.
Last edited by JET MECH; 10-03-2008 at 01:31 PM.
Good god, you are more indecisive than me. Don't forget to order the boost limiter with it. It'll save you some change on the shipping.
10-04-2008, 09:02 AM
#28
Quamen. what is the impeller speed of the V+ at your indicated 6500 rpm dyno pull at 10 psi? since you have a one off pulley drive system i cannot figure out what it could be. were you running it close to the 60,000 rated rpm of the new billet impeller? also did you log any IAT during the run's? that was one of the problems we had with the Si trim. it was great at slower speeds but once we spooled the supercharger up close to it's max rated rpm it turned into a heat pump! pumping gobbs of hot air into the engine which we noted when the engine started detonating mildly even with 100 octane race fuel.
10-04-2008, 09:59 AM
#30
Unfortunately I wasn't able to log my IAT's. I didn't even realize the UTEC had different logger screens till I was off the dyno. This is soley my fault though. I was running this impeller no where near it's limit. That I can gaurentee. I want to say that I am running a 6.75 crank pulley. I know that the supercharger pulley is 3.25 though. My crank pully is only about a 1/2inch larger than the stock pulley that you guys use.
I didn't have any problems with detonation until 440whp on 93octane and some good timing. The impeller was designed to be more effecient at compressing air than the S/SC-trim hence more boost across the rpms. I would assume that IAT's would be the same or lower slightly.
I didn't have any problems with detonation until 440whp on 93octane and some good timing. The impeller was designed to be more effecient at compressing air than the S/SC-trim hence more boost across the rpms. I would assume that IAT's would be the same or lower slightly.
Quamen. what is the impeller speed of the V+ at your indicated 6500 rpm dyno pull at 10 psi? since you have a one off pulley drive system i cannot figure out what it could be. were you running it close to the 60,000 rated rpm of the new billet impeller? also did you log any IAT during the run's? that was one of the problems we had with the Si trim. it was great at slower speeds but once we spooled the supercharger up close to it's max rated rpm it turned into a heat pump! pumping gobbs of hot air into the engine which we noted when the engine started detonating mildly even with 100 octane race fuel.
10-04-2008, 10:03 AM
#31
I just plugged in 6.75 crank pulley/3.25 SC pulley/6500 RPMs (what I stopped at) and I saw 46,575 rpms for a impeller speed.
The thing to remember is that they say that you shouldn't go past 53,000rpms since tip speed becomes a problem on an sc/s-trim.
The thing to remember is that they say that you shouldn't go past 53,000rpms since tip speed becomes a problem on an sc/s-trim.
10-04-2008, 01:11 PM
#37
helical. not sure if this was answered before, but what you use to model the design of that impeller?
also, i see people are interested in purchase. love to see more boost comparisons as i have graphs showing that much boost differences withe the same impeller (although the logs were taken on the road which presents a variable load compared to a dyno)
also, i see people are interested in purchase. love to see more boost comparisons as i have graphs showing that much boost differences withe the same impeller (although the logs were taken on the road which presents a variable load compared to a dyno)
10-04-2008, 03:09 PM
#39
helical. not sure if this was answered before, but what you use to model the design of that impeller?
also, i see people are interested in purchase. love to see more boost comparisons as i have graphs showing that much boost differences withe the same impeller (although the logs were taken on the road which presents a variable load compared to a dyno)
also, i see people are interested in purchase. love to see more boost comparisons as i have graphs showing that much boost differences withe the same impeller (although the logs were taken on the road which presents a variable load compared to a dyno)
Regarding boost logs I understand that varrying conditions can do this. However, for this reason I made sure to do the dynos on the same day, same dyno, swapping the impeller out on the dyno. I took a number of logs from each impeller and the posted log was a 100% repeatable for both the SC and the V+ impeller.