has anyone ironed out fitting the trigger wheel on a small block chevy?
I haven't seen anything on this.
im interested in mounting the trigger wheel and vr sensor on my sbc.
trigger wheel on SBC
Moderators: JeffC, rdoherty, stieg, brentp
I am currently playing with t
I am currently playing with this as well. i havent actually finished the project yet but this is my plan. if anyone has any other suggestions im open to any input.
the way i am approaching this is to have the sensor ring drawn out on autocad, and getting a machine shop to recut the sensor ring to a proportionally larger diameter with a laser cutter. then get them to cut down the forward edge of your balancer and have them press the new ring onto your balancer so that it is flush with the face of the balancer(note that there were 3 different size balancers that came on the sbc, and the smallest of them has to be used). make sure that the O.D. of the sensor ring, the top of the teeth, is larger than the diameter of the balancer so that your vr sensor will be able to pick them up(watch out for the timing marks on the timing cover, they might be in the way). my total cost for getting the sensor cut and pressed on will be roughly $80US.
as far as the vr sensor, there are 2 bolt holes on the front of the passenger side of the block right close to the fuel pump mount. just build yourself a bracket for the sensor so that it avoids the water pump/lower rad hose/ fuel lines and anything else that is in the way. its a tight fit, but it should work.
the way i am approaching this is to have the sensor ring drawn out on autocad, and getting a machine shop to recut the sensor ring to a proportionally larger diameter with a laser cutter. then get them to cut down the forward edge of your balancer and have them press the new ring onto your balancer so that it is flush with the face of the balancer(note that there were 3 different size balancers that came on the sbc, and the smallest of them has to be used). make sure that the O.D. of the sensor ring, the top of the teeth, is larger than the diameter of the balancer so that your vr sensor will be able to pick them up(watch out for the timing marks on the timing cover, they might be in the way). my total cost for getting the sensor cut and pressed on will be roughly $80US.
as far as the vr sensor, there are 2 bolt holes on the front of the passenger side of the block right close to the fuel pump mount. just build yourself a bracket for the sensor so that it avoids the water pump/lower rad hose/ fuel lines and anything else that is in the way. its a tight fit, but it should work.
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Todd Charles
- Posts: 2
- Joined: Mon May 24, 2004 5:08 pm
Just a thought, if you plan t
Just a thought, if you plan to go thru all the trouble of having a wheel lazer cut wouldn't it be easier (and cheaper) to just have the teeth machined into the dampner itself? Of coarse you would need to get it right the first time. Also if you plan to be using an expensive fluid dampner or even a steel NHRA approved type you may not want to do this.
todd
todd
i had thought about getting t
i had thought about getting the teeth cut into the balancer, but the machine shop wanted $300 as aposed to my previous post. the reason had to do with the rubber in the balancer and having to make a special jig to get it cut properly. and my way isnt that much more work than what u suggested. getting teeth cut into the balancer would still need an autocad drawing.
Playing with my wheel-o
Here are the pics I posted previously on how I mounted my trigger wheel. It's an Olds 455, but similar to any Domestic V8.
http://community.webshots.com/user/paratime
I used the wheel off a V6 EDIS; it was a nice mid size. Then, I bought a piece of 5 inch round aluminum stock and used a lathe to cut a notch in one end the same diameter as the pulley, so it would fit centered on the balancer. Then I cut the other end with a small spacer to position the sensor away from the balancer, then a step equal to the inside diameter of the trigger ring, and finally, a step the inside diameter of the pulley. Finally, redrill the pulley bolt holes through the trigger ring, and the adapter. Measure the total distance the crank pulley is shimmed out, and space the water pump pulley the same.
It has run about 6000 miles, so far.
http://community.webshots.com/user/paratime
I used the wheel off a V6 EDIS; it was a nice mid size. Then, I bought a piece of 5 inch round aluminum stock and used a lathe to cut a notch in one end the same diameter as the pulley, so it would fit centered on the balancer. Then I cut the other end with a small spacer to position the sensor away from the balancer, then a step equal to the inside diameter of the trigger ring, and finally, a step the inside diameter of the pulley. Finally, redrill the pulley bolt holes through the trigger ring, and the adapter. Measure the total distance the crank pulley is shimmed out, and space the water pump pulley the same.
It has run about 6000 miles, so far.