How to make more Boost with a new Novi 1000?

**wldtang** · 03-22-2003, 05:04 PM

I am thinking of buying a new revised Novi 1000. Anyone know what would need to be done in order to increase boost? I have heard of three different pulleys being offered. Anyone know the sizes and how they affect boost?

I am also running a Mark VIII fan with a thicker radiator (ex-AOD car) Does anyone know if the extra crank pulley will clear the fan? If I had measurement from a pulley I could check it out myself. Can anyone help?

**Goliath5.0** · 03-22-2003, 07:09 PM

I ran an ASP 8" crank pulley with success, I did however of course have to use a 93' cobra water pump pulley.

As for the clearance from the crank pulley to the fan, it was enough clearance. It was congested no doubt, but nothing significantly bothersome, nor anything to be worried about.

**wldtang** · 03-22-2003, 07:14 PM

I am guessing this is the old Novi or is it the new setup with a sep. crank pulley?

**root** · 03-22-2003, 07:16 PM

wldtang: To raise the boost you have to change the blower pulley or the crank pulley. You have to be careful because if you change that pulley (blower) your warranty will be void.

The new 1K is supposed to range from 6-12 with the pulleys that come with the kit. I have not seen the kit in person so I cannot say for sure.

Ian

**wldtang** · 03-22-2003, 07:21 PM

Yea. I keep hearing of different pulleys in the kit but no one has been able to tell me for sure what it comes with. It would be great to get different pulleys so I could switch between them. I do not want to change the blower pulley because of the warranty.
I have decided to do the 1K. But I would like to find this out first.

**mygt8a4re** · 03-23-2003, 11:46 AM

i talked with jack at musclemotors & he said his new revised kits are being sold but he said there were no 3 pulley options, all the other revisions were correct! here is a quote from his e-mail to me:

"Justin,
This is the brand new version of the Paxton Novi 1000 as stated in our
auction. There is not 3 pulleys though to upgrade boost. It comes standard
with what is below which is directly from Paxton's newletter to dealers."

he mentioned that the kit comes with an 8rib 3.5" pulley from the previous 3.0" 6rib! so its actually lower boost produced with the new revisions!? the 8 rib is a great upgrade but i was looking forward to having the 3 pulley option!!

**wldtang** · 03-23-2003, 01:13 PM

I wonder if it can be ordered with a different pulley?

**Chuck** · 03-23-2003, 06:39 PM

The reason that the blower pulley is bigger is because so is the crank pulley.

With seperate drive you have a crank pulley with 2 belt grooves in it.

The outer one that runs the blower is larger so the blower spins

just as fast as the regular Novi 1K even tho the blower pulley is

larger.

I hope this made sense!?!?!?

**mygt8a4re** · 03-24-2003, 01:00 PM

so how could you up boost w/o voiding the warrenty? only change the crank pulley? that would be worth but 1psi or so right? ................hmmmm

**Whistler** · 03-24-2003, 06:12 PM

Originally posted by mygt8a4re
so how could you up boost w/o voiding the warrenty? only change the crank pulley? that would be worth but 1psi or so right? ................hmmmm

For the "old" style 1k, changing the crank pulley is a dramatic difference. It gives just a tad more than 1psi :) .

To answer your question about upping the boost...Yes you change the crank pulley to not void the warranty. You can change the crank pulley to as big as you want. Talk to Chris (Goliath5.0), he was running a 8" crank pulley and saw 15psi through aftermarket heads and intake!

**mygt8a4re** · 03-24-2003, 08:35 PM

thanx for that info whistler! so can i expect to see more boost than the 5-6 psi base since i have bigger heads & intake? see my sig? im new to the s.c.ing scene, so all your help is appreciated!

**wldtang** · 03-24-2003, 08:42 PM

I would still like to know if a New Novi can be ordered with different pulleys?

**Whistler** · 03-26-2003, 05:59 PM

Originally posted by mygt8a4re
so can i expect to see more boost than the 5-6 psi base since i have bigger heads & intake?

You have it backwards. You'll see less boost because your heads and intake flow alot better than the stockers. I'd guess you'll still see 5 psi with the basic 1k setup. I was seeing 7 psi with the stock pulleys.

Maybe some of the h/i/c guys will chime in and tell you how much boost they saw with a stock pullied Novi 1k. That would give you a better idea on what to expect :D

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