Anybody do the oil pump spring kit for better oil pressure?

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Aug 29, 2012 | 09:21 AM

#11

Spur56

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From: Nooga, TN

Quote:

Originally Posted by fabrik8r

HVLP, High Volume Low Pressure; that is the type of oiling system used in the Twin Cam. Its a little different from what folks are acustomed to, higher pressure will not necessarily improve lubrication.

Fab you know I love you man, but your statement is somewhat incorrect. True dat the TC oil system is a flow system, but..... Flow in a system is proportional to the differential pressure. There are other factors such as the increase of head loss as Flow increases, so it is not a linear system.

But, bottom line, increasing the inlet pressure to the system DOES increase the flow rate through the system assuming the outlet pressure remains the same (Delta Pressure). This increase may be small, but in a flow system, any increase is good. The other area where pressure and flow are good is the lifters. The increased pressure and flow help keep the lifters pumped up, especially at higher rpm. So, I use the baisley spring and their ground and polished bypass valve. It is good for flow and good for the lifters

Aug 29, 2012 | 09:25 AM

#12

frenchbiker

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From: The Burgh

Quote:

Originally Posted by $tonecold

I've got the 30% Baisley spring in my '09. It make quite a difference. It's hard to give you exact pressure reading due to the nature of the HD oil gauge, but I would say I'm pushing 50# at 3000 rpm with 210 degree oil temp. Idle pressure is about twice stock. It will be different with an early model, but it should be better than what you have now. Baisley also offers a 15% spring.

And what does higher oil pressure translate into, in terms of performance of your engine, beside moving the needle of the gauge to the right?

Aug 29, 2012 | 09:32 AM

#13

Big Trev

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From: England

Quote:

Originally Posted by frenchbiker

And what does higher oil pressure translate into, in terms of performance of your engine, beside moving the needle of the gauge to the right?

Luv it

Aug 29, 2012 | 09:52 AM

#14

$tonecold

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From: Gilbert, Az.

Quote:

And what does higher oil pressure translate into, in terms of performance of your engine, beside moving the needle of the gauge to the right?

Quote:

The other area where pressure and flow are good is the lifters. The increased pressure and flow help keep the lifters pumped up, especially at higher rpm. So, I use the baisley spring and their ground and polished bypass valve. It is good for flow and good for the lifters

It does seem to quiet the valve train. I would not say that it makes a huge difference. The extra pressure should cushion bearing and bushing surfaces better also. I also saw temperatures in the 280-300 degree F range quite often when the bike was stock with the stock spring, I rarely see temps in excess of 220 F now, I cannot say for certain that this is a result of the additional oil pressure since I have never decreased the oil pressure to see if the oil temps would increase and the engine is no longer stock.

Quote:

I can't see this working in winter (I ride all year long, all temps) so will have to take it out. Is the Beasly spring just as bad on this?
I DO like seeing 20 lb. idle pressures when hot though. Like a new bike.

I think you may have over done it. Even with the 30% increase spring I have never seen my oil gauge peg out. If it did I would go to the 15% increase spring. I did at first use Zipper's spring shim on the stock spring, but I shaved it to half it's thickness before installing it, it was about 1/8" thick. That seemed be a reasonable increase.

Aug 29, 2012 | 10:41 AM

#15

chevele72

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Joined: Apr 2010

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From: Central Fl.

Baisley spring and plunger in both bikes, love them. As far as the cold running, my bike sits and fully warms up in the winter.

Aug 29, 2012 | 10:50 AM

#16

fwb35

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From: Orange, VA,

The ERT Products kit comes with 3 springs so you can adjust it to where it should be and not have to much lik putting a slug under the spring.

Aug 29, 2012 | 11:30 AM

#17

$tonecold

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From: Gilbert, Az.

Quote:

The ERT Products kit comes with 3 springs so you can adjust it to where it should be and not have to much lik putting a slug under the spring.

I you like that kit go for it. It is probably as good as any, though I can't say that for sure. I can't use the exhaust gaskets they have in the kit and I prefer Cometics gaskets. I'm not sure about starving the lower end with too much pressure though, I don't think that increasing the spring pressure increases your scavaging. If anything, I think sumping would occur.

Aug 29, 2012 | 11:51 AM

#18

Spur56

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From: Nooga, TN

Quote:

Originally Posted by frenchbiker

And what does higher oil pressure translate into, in terms of performance of your engine, beside moving the needle of the gauge to the right?

More precise valve operation and possibly a longer lasting motor. Not much,but considering what some of these jack wagons pay for 5 more hp, what the heck. This only cost about $30 bucks and 5 minutes if done while replacing cams.