Pulleys and Oil pump problems?

[Mach'n You]

I keep reading that aftermarket balancer will cause oil pump/engine problems but i NEVER find any incident of a person posting that they had a problems blaming it on the pulleys.

Does anyone know of one of these post and can point it out to me? So far I only see people talking about motors built to take 7500+ Rpm and are raced a LOT having problems.

 

[01vert]

Go back a couple years if possible, piggyback pulleys and 7k dont seem to agree with eachother. Were quite a few on here thinking that oil pump gears shattering was related to the changed harmonics from piggyback pulleys. Used to be a lot of posts about it a while back and not so much recently.

 

[cobraetti]

I keep reading that aftermarket balancer will cause oil pump/engine problems but i NEVER find any incident of a person posting that they had a problems blaming it on the pulleys.

Does anyone know of one of these post and can point it out to me? So far I only see people talking about motors built to take 7500+ Rpm and are raced a LOT having problems.

were you thinking of the March #1158 Crank pulley?, I have be playing around with this idea as well.

 

[Mach'n You]

were you thinking of the March #1158 Crank pulley?, I have be playing around with this idea as well.

Yes.

 

[cobrob]

Mine sees 7500 rpm daily with march 1158! Then again I have a billet pump

 

[mikej9983]

I have the march pulley as well with over 10,000 miles on it with no troubles.

 

[cobraetti]

I have the march pulley as well with over 10,000 miles on it with no troubles.

what size belt did you use?

 

[01SVTSnake]

March #1158 is about the only pulley i would feel safe running IMO.

 

[mikej9983]

I had to use a belt from napa

 

[STAMPEDE3]

Go back a couple years if possible, piggyback pulleys and 7k dont seem to agree with eachother. Were quite a few on here thinking that oil pump gears shattering was related to the changed harmonics from piggyback pulleys. Used to be a lot of posts about it a while back and not so much recently.

Actually it was from small dampners, not piggy backs.

No one of the 9 or so failures were useing piggybacks. They were all race motors useing a small balancer.

Matter of fact keeping the big ass stock balancer is a good thing.

 

[Mach'n You]

Actually it was from small dampners, not piggy backs.

No one of the 9 or so failures were useing piggybacks. They were all race motors useing a small balancer.

Matter of fact keeping the big ass stock balancer is a good thing.

Yes 7500rpm and a smaller crank pulley = not a good idea, but for 7-7200 it shouldnt be bad.