finally put the 8" pulley on......

**chemical5l** · 08-14-2003, 02:31 AM

Hey guys, I finally put the 8" pulley on my revised novi1K and to be honest with you guys, I was very disappointed. I saw a peak boost of maybe 8psi at like 6000 rpms, and thats with the morpheus power pipe, what gives? For the guys that dont know yet, I used a 59"belt and used the bottom hole of the tensioner, and my car has a/c so I used a 88" accessory belt a 89 would work too, the new pulley has a underdriven pulley for the accessory crank. Now how do I get more boost and how fast is my blower spinning now?

**regattacoupe** · 08-14-2003, 08:21 AM

well the blower should be spinning a little over 47k. Which is a far cry from the 55k ian reported to be the max absolute. Now I think why ersunl has 14lbs and you have 8 is because we have a larger compressor pulley. It's not a drastic change for us as it is for them. I have one and i'll put it on this week. I know i see 6-7 on a hot day with stock pullies so I wanna see what mine does.

**mygt8a4re** · 08-15-2003, 05:07 PM

Yeah, I put mine on last weekend. I posted my results in the "8 in pulley club" post. I too only get 8 psi at 6k with the powerpipe plus what's in my sig. I used the exact belt lengths & configuration you did........... I was so disappointed I went & cranked my initial timing back to 13 & pull 1psi out under boost with my btm. Now I feel some pull. I'm not recomending you do this, but that makes a huge difference at 8psi! I'm going to play with water inection & more timing to see if I can find some satisfaction there. Then all us revised guys with 8" cranks can talk each other into voiding our warrenty in search of more boost =)
-justin

**ersunl** · 08-15-2003, 05:50 PM

Originally posted by regattacoupe
...Now I think why ersunl has 14lbs and you have 8 is because we have a larger compressor pulley...

Actually I'm only seeing 11. :D
If you'd like to send me the parts to make 14 I'd gladly let you know how it goes. :)
The smaller blower pulley is definitely nice... I wonder what it would take to get those newer units up there like the older ones, a 10" crank? LOL Sometimes I wonder if they did that to drive more people to void their warranty ealier... if so I bet it works. I don't think I'd be able to stay at 8psi.

-Eric

**regattacoupe** · 08-15-2003, 09:06 PM

whoops.......i meant neil.....I'll probably stick the 8" pulley on and keep the warranty till i can upgrade to the 2K...I wonder how the 2k would react to the 8" crank and the powerpipe?? MUHAHAHA!!!

**chemical5l** · 08-17-2003, 06:54 AM

so whats the deal, 8psi is correct, whats with the false promises of 10+ on a stock car without the powerpipe?

**regattacoupe** · 08-17-2003, 07:26 AM

well putting the 8" crank on the new Novi 1k is new to us all. Mine will be on this weekend.I think sinner said that he see's 8 before and 10 after the power pipe, and he has H/C/I on his car as well. Remember also that boost is not the absolute measure of horsepower. There are so many variables.

**mygt8a4re** · 08-18-2003, 11:53 AM

true, i only saw a small increase in boost but there was a great performance gain. the boost coming in sooner alone was a great benefit. i only was surprised since ASP promises at least 10psi of boost. this could possibly be true with stock H/C/I car........i dont recommend against the 8" pulley, i was just expecting what they promised. there was a deffinate power gain, i guess i just had my hopes a tad high from the info givin by ASP.......
-justin

**chemical5l** · 08-18-2003, 02:15 PM

I am a true h/c/i car and I only see like 7or8 max, still kind of disappointing, dont know if its the blower design itself, maybe it just cant flow that much air.

**sinner** · 08-18-2003, 02:26 PM

Originally posted by chemical5l
so whats the deal, 8psi is correct, whats with the false promises of 10+ on a stock car without the powerpipe?

I have heads and intake and I seen 8 psi before powerpipe and 10lbs now w/ powerpipe at 6000 rpm

**chemical5l** · 08-18-2003, 05:13 PM

what are you revving too, I see the 8 at 6000k, maybe my blower is the problem.

**sinner** · 08-18-2003, 05:20 PM

I'm reving to 6000rpm.
Is there any place you could be leaking the boost from?

**mygt8a4re** · 08-18-2003, 06:02 PM

i too saw only 8psi with true H/C/I. its appearent that only 8psi can be had total with the new crank....if there was a boost leak big enough to leak 2 psi of boost you would have a very obvious vacuum leak. were tlaking a leak big enough to bleed off 2 psi of boost, that would be serious!
-justin

**chemical5l** · 08-18-2003, 06:17 PM

you too are seeing 8psi with stock longblock?

**sinner** · 08-18-2003, 06:25 PM

Originally posted by mygt8a4re
if there was a boost leak big enough to leak 2 psi of boost you would have a very obvious vacuum leak. were tlaking a leak big enough to bleed off 2 psi of boost, that would be serious!
-justin

I was thinking more along the lines of the bypass valve leaking it or something along the dishcharge tube not firmly fastend.