#1  
Old 09-16-2020, 09:47 AM
Bnick166's Avatar
Bnick166 Bnick166 is offline
Chief Ponti-yacker
 
Join Date: Sep 2006
Posts: 875
Default Any interest in Crank Pulleys for Moroso Flying Magnet wheel.

I'm interested in using a Magnetic p/u along w. my CVF Pulley set-up. I have the high flow crank pulley and if I use a crank trigger wheel (Mororo is 3/8" thick) it'll space the pulley out of line w/ everything else in the system (Alt/WP.Pwr Strng). Any interest in a run of these? I don't know if I can talk them into making a run or if I'll have to go to another source and have them copy my pulley and make it 3/8" shallower. Thought I'd test the waters before d(r)iving in

  #2  
Old 09-16-2020, 11:00 AM
Scott65's Avatar
Scott65 Scott65 is offline
Ultimate Warrior
 
Join Date: Jan 2002
Location: Houston, Texas
Posts: 1,991
Default

Good luck with your venture. I wish we had an option of a true Pontiac SFI balancer with a trigger wheel built in.

__________________
'65 Tempest 467 3650# 11.30@120.31
  #3  
Old 09-16-2020, 11:15 AM
Scott Stoneburg's Avatar
Scott Stoneburg Scott Stoneburg is offline
Ultimate Warrior
 
Join Date: Sep 2007
Posts: 2,179
Default

Quote:
Originally Posted by Scott65 View Post
Good luck with your venture. I wish we had an option of a true Pontiac SFI balancer with a trigger wheel built in.
Innovators West makes the balancer with the magnets built into it.
Good luck with the pulleys, might be less expensive or quicker to have a local fabricator make you a billet one.
Attached Thumbnails
Click image for larger version

Name:	20191112_075230.jpg
Views:	97
Size:	65.3 KB
ID:	549710  

  #4  
Old 09-16-2020, 11:18 AM
Scott65's Avatar
Scott65 Scott65 is offline
Ultimate Warrior
 
Join Date: Jan 2002
Location: Houston, Texas
Posts: 1,991
Default

Good to know. I should've said "toothed wheel". But that is probably more useful to the average racer.

__________________
'65 Tempest 467 3650# 11.30@120.31
  #5  
Old 09-16-2020, 11:46 PM
Dragncar Dragncar is offline
Ultimate Warrior
 
Join Date: Mar 2004
Location: Humbolt County California
Posts: 8,283
Default

Back when Ace at PPR was up and running he did some dyno testing with crank trigger ignition vs distributor. He found a crank trigger was worth a solid 7 HP vs distributor.

  #6  
Old 09-17-2020, 07:24 AM
Bnick166's Avatar
Bnick166 Bnick166 is offline
Chief Ponti-yacker
 
Join Date: Sep 2006
Posts: 875
Default

I'm switching to fuel injection and I've noticed that my timing is all over the place....Crank trigger is rock solid.

  #7  
Old 09-17-2020, 07:53 AM
Scott65's Avatar
Scott65 Scott65 is offline
Ultimate Warrior
 
Join Date: Jan 2002
Location: Houston, Texas
Posts: 1,991
Default

Yes, you'll notice a great improvement in timing stability. More data points 36-1 or 60-2 toothed wheels and it gets even better.

__________________
'65 Tempest 467 3650# 11.30@120.31
  #8  
Old 09-17-2020, 09:21 AM
Bnick166's Avatar
Bnick166 Bnick166 is offline
Chief Ponti-yacker
 
Join Date: Sep 2006
Posts: 875
Default

I realize a reluctor wheel is NORMALLY part of the damper...what if I were to tig a ring mount to the pulley and reference it to TDC via a dowel or notch.

  #9  
Old 09-17-2020, 10:57 AM
Scott65's Avatar
Scott65 Scott65 is offline
Ultimate Warrior
 
Join Date: Jan 2002
Location: Houston, Texas
Posts: 1,991
Default

You could certainly do that. I balked at it due to modifying an SFI balancer. Maybe that's ok, or maybe no one would pay any attention to it. That's why I wish we could get one with it built that way. With Pontiac pulley pattern.
And fyi, depending on your efi system, you may not even need to worry over closely referencing number 1. Concentricity would be the primary concern.

__________________
'65 Tempest 467 3650# 11.30@120.31
  #10  
Old 09-17-2020, 11:19 AM
Bnick166's Avatar
Bnick166 Bnick166 is offline
Chief Ponti-yacker
 
Join Date: Sep 2006
Posts: 875
Default

I wouldn't chance modifying an SFi balancer either......that's why I suggested that maybe I can TIG a mount (or drill & tap) the pulley for a reluctor ring. Think It'll work O.K.? Got any suggestions for a reluctor ring? 60-2 w/ 3 mounting holes...say 1/4 bolts? My crank pulley is nearly 8" o.d so I'm thinkin' there's room to work with around the outside of the damper w/o moving all of the accessories forward. any thoughts on a p/u and mount? Will be using Holley Dominator ECU to control EFI.

  #11  
Old 09-17-2020, 12:31 PM
Scott65's Avatar
Scott65 Scott65 is offline
Ultimate Warrior
 
Join Date: Jan 2002
Location: Houston, Texas
Posts: 1,991
Default

I used one of these: https://www.diyautotune.com/product/...heel-no-slots/
Had it bored for the balancer hub, and the bolt holes for the pulley pattern drilled on an index head, all so that concentricity would be dead on. But it did alter my pulley spacing.
I "think" with that diameter, you could conceivably chuck the pulley in a lathe and turn a very slight step, then bore the toothed wheel to fit snugly(light press fit) and then tack it in 4 spots, or 8... If the pulley is steel... The wheel has to be steel to read.

__________________
'65 Tempest 467 3650# 11.30@120.31
  #12  
Old 09-17-2020, 04:24 PM
Skip Fix's Avatar
Skip Fix Skip Fix is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Katy,TX USA
Posts: 20,541
Default

http://www.atiracing.com/products/da...gnet_placement

Might be an option

__________________
Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune 13.43@103.4
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
  #13  
Old 09-17-2020, 05:41 PM
Scott65's Avatar
Scott65 Scott65 is offline
Ultimate Warrior
 
Join Date: Jan 2002
Location: Houston, Texas
Posts: 1,991
Default

That looks handy. Seems like you'd be stuck with Chevy pulleys though

__________________
'65 Tempest 467 3650# 11.30@120.31
  #14  
Old 09-19-2020, 09:43 AM
Skip Fix's Avatar
Skip Fix Skip Fix is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Katy,TX USA
Posts: 20,541
Default

My OLD ATI balancer(late 80s early 90s) takes Chevy bolt pattern . Easy enough to drill factory pulleys and RARE can drill their billet for both patterns.

__________________
Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune 13.43@103.4
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
  #15  
Old 09-20-2020, 09:34 AM
FMile Pontiacs's Avatar
FMile Pontiacs FMile Pontiacs is offline
Senior Member
 
Join Date: Dec 2007
Posts: 198
Default

I use a 60-2 Toothed wheel. I ordered one with no holes. I drilled holes in wheel to fit the bolt pattern of my Pontiac balancer. I have always ran an Aerospace Components Crank Mandrel from Tin Indian. I had a local machine shop mill the 1/8 inch thickness of the toothed wheel from the back of my mandrel. I use a Innovators West Crank Sensor Bracket and modified it to hold the smaller (in diameter) Holley EFI Pickup. I am currently running a MS3 Computer and fire my 463 using LS Coil Packs. I have noticed my Timing is Rock Solid now, compared to being timed from the distributor. My distributors only function now is to turn the oil pump.

Reply

Thread Tools
Display Modes

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

Forum Jump


All times are GMT -4. The time now is 06:05 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017