VF engineering supercharger - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members

Supercharger Discussion For all you misguided souls.
Sponsored by:
Sponsored by:

LinkBack Thread Tools Search this Thread
Old 08-17-2014, 07:42 PM   #1
Thread Starter
iTrader: (1)
Join Date: Jun 2013
Posts: 36
Total Cats: 0
Default VF engineering supercharger

Does anyone know of a larger crank pulley that can be used on a VF engineering supercharger? Does anyone here know the stock crank diameter?

I was thinking about using aFast Forward Supercharger's crank pulley, since they come in different sizes. I dont know if the belt lines up tho. Anyone here ever run into this problem?

I ran across a kit, and the only item missing is the crank pulley.

verch101 is offline   Reply With Quote
Old 08-19-2014, 02:33 AM   #2
Junior Member
iTrader: (4)
Join Date: Mar 2006
Location: San Diego, CA
Posts: 67
Total Cats: 4

See attachment, it looks just about the size of the accessory belt pulley. There are two minor issues:

1. According to the pic, the 6-rib pulley sticks out a little bit more than the standard MP62 6-rib kits. You may need to shim it a bit.

2. Obviously you can go out and measure your own 4-rib pulley now, but I think you're at least looking at 125mm. So I think Tom at FFS only sells 2 sizes higher. But you might also try PulleyBoys.com that Trikchop recommended.

As background, the Stage 1 kit was 6 psi, and had a 3" SC pulley. Stage 2 at 8psi had a 2.6" SC pulley. The crank pulley was never changed. Not a lot of data points, but graph out that 2-point chart and you can try to make an educated guess as to the rough psi you'd achieve messing with pulley combos.

As with all SC kits running with an additional crank pulley, check if you have the brown/rusty crank pulley or the black one. The black one will require a small ring adapter. If you need one, you can order them from FFS.
Attached Thumbnails
VF engineering supercharger-crank-pulley-boltedup.jpg  
RunninOnEmpty is offline   Reply With Quote
Old 08-19-2014, 02:42 AM   #3
Thread Starter
iTrader: (1)
Join Date: Jun 2013
Posts: 36
Total Cats: 0


Thanks so much for the reply. I knew I had a 3" pulley but wasn't sure what psi it would produce. I think I am gonna try a 150mm crank pulley, but agree the stock pulley looks about 130mm.

I was looking at the fast forward pulley, and agree it looks a little shorter then the VF pulley.
If I have too, I think I can have a few mm shaved off the back of the blower pulley to align the belt. That is if the belt it already too far out of alignment.

Hopefully the 150mm pulley will get me up in the 8 psi range. If that's the case I'll probably fine a 2.6" pulley and shoot for around 10 psi.

(Sent with challenges from my iPhone)
verch101 is offline   Reply With Quote
Old 08-19-2014, 08:53 AM   #4
Boost Czar
iTrader: (61)
Braineack's Avatar
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,872
Total Cats: 1,790

just close the wastegate. oh wait...
Braineack is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 58 12-13-2017 10:04 PM
Changing from 460cc to flow force 610cc in diypnp 90 Turbo MEGAsquirt 19 10-19-2015 04:23 PM
MP62 maintenance Pist0n Supercharger Discussion 3 10-10-2015 05:23 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
New M62 Miata owner Pist0n Meet and Greet 4 10-01-2015 09:18 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 08:29 AM.