TheSamba.com :: View topic - Has anyone used CB Performance's Maxi Filter Sump?

Fri Aug 15, 2008 8:10 pm

I saw this and was interested. Has anyone used it? Is it any good?
http://www.cbperformance.com/catalog.asp?ProductID=202

Fri Aug 15, 2008 8:12 pm

I would never put a filter on the suction side of the oil pump.

Fri Aug 15, 2008 8:35 pm

I have one and it has already saved my engine once. I highly recommend it.

Fri Aug 15, 2008 8:55 pm

DLX-Fe wrote: I have one and it has already saved my engine once. I highly recommend it.

How did it save your engine? Thanks.

Fri Aug 15, 2008 8:58 pm

I'll Full flow the cheap way before doin that shit.

Fri Aug 15, 2008 9:10 pm

I would not want to use that either.

Fri Aug 15, 2008 10:52 pm

Did you ever see the oil pump and filter on the engine in Dean Lowry's old 11 second sandrail. Its was an in and out pump/oil filter. In the three years we went to the track with him he never even took the engine apart. I had one customer refuse to put an oil filter or an extra oil cooler on his Things new 1776 engine. It did a slow sieze in the mountains. The case got the trust welded and .080 line bore and a new crank and went another 90,000 miles and is still running today with an Empi in and out pump and cheap hose clamp Empi cooler.

Fri Aug 15, 2008 11:52 pm

Listen to Glenn. It is a bad Idea.

Sat Aug 16, 2008 6:07 pm

I tried one on my sister's motor years ago when they first came out. GREAT way to spin a rod bearing, and wing it out the top of the case.
Don't run one.
Paul

Sat Aug 16, 2008 10:04 pm

I built a stock 1600 dp a few years back for a buddy of mine and installed one of the Maxi filters on it. It has worked fine so far, but it is a stock engine that never sees over 4500rpm. As far as being on the suction side, stock engine is ok, but no way would I use one on a high rpm engine(above 5000rpms). Just my .02's

Sun Aug 17, 2008 12:34 am

Glenn wrote: I would never put a filter on the suction side of the oil pump.

Explanation?

Sun Aug 17, 2008 6:07 am

All Gear pumps rely on a non restrictive inlet pressure to maintain volumn and pressure. Even with the stock setup there is some restriction but the pump wont rotate fast enough in normal motor operation for this small restriction to cause any cavitation. The more restriction you put on the inlet of the pump, the more likely you will get cavitation at a lower RPM. If you install a filter on the inlet, the restriction will slowly build. You wont even notice any problem until the moment that the restriction becomes high enough to cause cavitation. at that moment, your pump will run dry and you will throw a rod or spin a bearing. All filters have restriction . The filter araa that can be installed in the stock screen locaion is not sufficient to install a filter with a large enough filter area to prevent this from happening. Rods are thrown and bearings are spun een when the stock screen becomes restricted. So it is not a good Ides.
By the way, the stock screen has a 1.5 PSI pressure drop at 4500 RPM. Your limit if you are using a 26mm pump is about a 5 PSI pressure drop total before cavitation could occure. Even the best oil filters have pressure drops in the 2-3 PSI range..
So it is not a good Idea. But it's your motor, do what you want.

Sun Aug 17, 2008 7:58 am

Now that their makes sense.

The one problem I have with full flow system is I have a mustache bar in the way but this motor will only be in this vehicle for another six months.