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mrcheeze36

L28 Turbo oil pump flow rate

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Hi All. I was just wondering what the flow rates were for the L28 turbo oil pumps (both manual and auto). Do they flow more than the Nissan Motorsport High Volume oil pump (9.6 GPM at 3000rpm)?

 

Would the High Volume oil pump be overkill for my setup? My friend and I are building a turbo stoker L28 and are thinking of running a GT35R.

 

Thanks in advance for the help!

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The GT35R will need a restrictor to keep the oil pressure down. I can't remember the max psi but it will use a little less oil than a bushing bearing turbo. Unless you plan on spinning it over 7K for long periods of time I think the factory turbo pump is fine. I haven't had any problems.

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"Spring"...

You can add an M6 Flat Washer under the stock Turbo spring (actually several) and get the same effect as the Comp Springset.

 

I believe they sourced the springset for the "comp" pump from the Diesel L engine...

 

But M6 Flat Washers have a nice effect on the oil pressure. You can actually tailor the pressure where you want starting low, and working up to it one Washer at a time...

 

You only really need 10 psi per 1000 rpm... But sometimes conditions warrant more.

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"Spring"...

You can add an M6 Flat Washer under the stock Turbo spring (actually several) and get the same effect as the Comp Springset.

 

I believe they sourced the springset for the "comp" pump from the Diesel L engine...

 

But M6 Flat Washers have a nice effect on the oil pressure. You can actually tailor the pressure where you want starting low' date=' and working up to it one Washer at a time...

 

You only really need 10 psi per 1000 rpm... But sometimes conditions warrant more.[/quote']

It is a dual spring setup. I have it in my toolbox.

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yes, that is the line from Nissan.

 

When dealing with the Turbo Automatics in US spec Cars they added volume and flow to compensate for the oil cooler system present on the Automatics.

 

Interestingly enough, the Turbo/Auto pumps are the most inexpensive of the lot, too! :shock:

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