question:

When I replace cams this winter (Andrews 26) and possibly add the Screamin Eagle High Volume Oil pump - will I be able to get away with less RPM at idle?

I have a 2006 FLHX (Twin 88) and will be replacing cams this winter. I have been looking at this oil pump which advertises increased oil flow and scavenge rate. Will this allow me to adjust the idle down below 1000 RPM? I'm really tied of this high RPM idle with injection and was hoping to get it down closer to 800. Will the higher flow make up for loss of RPM?

 

anyone?

 

I'd keep the idle at 1000 RPMs if it were mine. What you will get with the Andrews 26 is a much more lopey idle which kinda sounds like what your after. How ofter are you even at idle besides stops lights... Lowering it wont do anything benifit wise besides noise. Put the cams in and see how you like it. Whats your mileage on the current pump?

 

Don't really know exact mileage. It is over 40. Don't really keep track that close.

Also - lower RPM at idle should theoretically lower enginer temp when stopped.

 

Cams and a nice tune will also cool the motor down due to the overlap difference. Its whatever man, up to u

 

Put a Biesley oil pressure control spring in. Polish the plunger in the pressure control for smooth movement.
Voluum is one thing--Pressure is another.

 

Good point. I will look into Biesley.

"Cams and a nice tune will also cool the motor down due to the overlap difference."

I think your missing the point. 1000 RPM is crazy for idle. It's a waste of fuel and also results in unnecessary heat. Heat, btw, is the bane of every engine. Heat increases wear and shortens component life. BUT - I also know that the EFI Vtwin requires high idle RPM to keep oil flowing to the heads, etc. - given the stock oil delivery system.

There should be a safe compromise. If oil flow and pressure can be increased, idle RPM should be able to be decreased to achieve the same safe oil flow/pressure.

I am not so sure it is this easy though. If I can improve oil flow/pressure by 20%...can idle RPM be decreased 20%? This is the question. There is probably an algorithm that is used that results in something like 20% increase in oil results in 12% decrease in RPM - but I don't know.

I was hoping to get a builder or 2 to chime in with their own experience or thoughts on the subject.

 

HELP 2006 Road king
Just installed a screaming eagle cam plate with the high volume oil pump. No other mods other than new stock cams and bearings. Start the bike no oil presure? I have read that the 99 modle year you have to plug a hole on the plate but nothing on a 2006. Any one have a idea.