View Full Version : OS 91 question
I have an OS 91 SXH C spec that had a perry pump in my raptor 90. Can i run the engine with out the pump?Will i notice not having it?
moneypitvictim
11-30-2007, 10:06 PM
Yes you will notice it. The carb is made to run with the aid of the pump, so unless you add other means to bring fuel to the carb like a Cline regulator, you run the risk of running it flat out lean and siezzing the engine. Many people switch the perry pump with the Cline regulator which will run off the backplate pressure tab that the perry pump uses.
It depends on which engine/carb you have
If you have a C-Spec PS with a 60M carb it wont work with a cline
It does not have enough suction to open the cline
and cannot be modified to work with a cline
If you have a C-Spec (no perry pump) with a 60K-C carb it still wont work with a cline,
the carb needs to be modified to create more suction to work with the cline
This is what OMI do