reading through one of my mags, and i come across a new device for Evo engines that allows your oil to be filtered before it enters your engine, and says that then you can use a 10 micron filter which says would be superior filtration. Would filtering the oil before make a big difference, would it save my engine some wear down the line. would it seem like a good investment, or not totally necassary. it's the tpproseries smart pump, the website is www.tpengineering.com

I didn't read the artical but I would think that if you filter your oil befor the engine , you'd risk oil starvation cause there is no pressure pushing the oil from the tank to the pump

It's a small article but it does say: "that it utilizes the same patented three valve technology used in other pro series pumps to ensure constant delivery of oil to the crankshaft even at idle"

I'm talking about oil from the tank to the pump , that is gravity feed (or suction feed) and if there is no flow due to a blockage there would be no way to by pass the filter like on a return line which is pressure feed and if the filter fails then pressure activates the by pass

I'll take a look at the link and see if I can find any info on that

that pump won't fit a sporty much less an ironhead

If the filter has a pump in line before it, it should work. The fact of running a 10 micron filter after the oil leaves the engine won't necessarily be a good thing. If the evo engine doesn't generate enough pressure (which it won't) then the oil will just bypass the filter. I say stick with what it came with it has worked for many of us just fine.

that pump won't fit a sporty much less an ironhead

Even if it did, steer clear of oiling system add-on's. 99.9% are pure snake oil... Use a good filter, good oil (synthetic if you really care) and change it often. You will have a happy engine...

well I can see drakes worries his 77 doesn't even have a filter (from the factory) neather does mine , but I'm setting up a remote filter in the near future

Installing a filter on an engine that doesn't have one is probably a good idea... Sorry for my ignorance.. :frownthre

Do the Ironheads generate enough oil pressure/volume to sustain the pressure/volume drop you are going to encounter when you plumb in a filter?

well I don't know the pressure off hand but I know that yesterday in the cold winter weather I fired mine up to get some stayble in the carb and I pulled the cap off the oil tank and even cold it had a stream of oil about the size of a pencil kickin out the return tube into the tank

Sounds promising...is there anywhere you could temporarily plumb in a mechanical gauge to check the pressure?

right now!!!! its cold out in my unheated garage :brr

yes I'm gonna replace the idiot light with a presure gauge when I put on the remote

The rule of thumb for automotive engines is 10 psi per 1000 rpms.

I know Sportster engines are low pressure/high volume systems, so they might not necessarily apply to the 10/1000 rule...

Actually I'm asking in regards to my wife's 94 sporty, and the article said it was for evo engines so i'm naturally curious into looking for ways to keep her bike running so she doesn't come crying to me when something does happen.

the ironhead has a drop in filter which...i feel is lacking, but great oil pressure, and no problems with my oiling system, well at least nothing that broke down before I took it into the shop.