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I Was Told A Vl Turbo Oil Pump Is Very Strong?

Marko R1

By Marko R1,
in Engines & Forced Induction

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Marko R1 Grand Master

Marko R1

Posted
Posted

hi guys,

i spoke to a well respected engine builder today who recommended the use of a vl turbo oil pump on my rb26/30 build & the oil pump collar is not required...has anyone heard this before? its news to me...

regards,

Swiper the Fox Grand Master

Swiper the Fox

Posted
Posted
hi guys,

i spoke to a well respected engine builder today who recommended the use of a vl turbo oil pump on my rb26/30 build & the oil pump collar is not required...has anyone heard this before? its news to me...

regards,

yes ive heard that plenty of times.

T04GTR Grand Master

T04GTR

Posted
Posted

the vl or rb30 pumps run a steel inner gear/sleeve then that mates to the conventional oil pump.. not the sinterd type of later.. but i dont think the flow is up there.

ps, they are a spur gear type aswell and do cavitate at high revs.

external is better. id look at the calias forum to back it up.. ;)

The Dan Grand Master

The Dan

Posted
Posted

I was under the impression the 30 pump did not fit onto cranks that already have the collar or the extended factory snout.

Which pretty much limits you to R32 GTR cranks and 20 and 25's.

The cavitation is a critical issue as mentioned above.

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

a very learnered man told me a few weeks ago on his trip from QLD that RB30's don't smash oil pump's because the crank's are really heavy.

unless you live on the limiter that is.

So i don't think it matter what pump you have

Swiper the Fox Grand Master

Swiper the Fox

Posted
Posted (edited)
a very learnered man told me a few weeks ago on his trip from QLD that RB30's don't smash oil pump's because the crank's are really heavy.

unless you live on the limiter that is.

So i don't think it matter what pump you have

Yes he would have to be one fella who i would trust with anything he told me.

if anyone 'actually' knows whats going on, its him.

Edited by DiRTgarage
EFI Performance Enthusiast

EFI Performance

Posted
Posted

NOPE.

On the RB30 oil pump GEAR it only has 8mm surface area on the crank collar itself, where RB20-25-26 have almost 25mm surface face on the crank.

You do the maths at 7000RPM.

Swiper the Fox Grand Master

Swiper the Fox

Posted
Posted (edited)
NOPE.

On the RB30 oil pump GEAR it only has 8mm surface area on the crank collar itself, where RB20-25-26 have almost 25mm surface face on the crank.

You do the maths at 7000RPM.

But if the crank has a narrow oil pump drive...it would only still have 8mm of contact. It wouldn't matter which pump you used.

Id prefer to use a pump which mated to the entire face of the drive...not just a small portion of it...this in my opinion is part of the whole RB oil pump saga and why Nissan extended the drives on later crankshafts.

Edited by DiRTgarage
The Dan Grand Master

The Dan

Posted
Posted

Can someone correct me if I'm wrong in my above post? I am almost 100% certain that RB30 pumps don't fit onto most of the cranks out there? This is due to the different gear design and different flats on the drive.

Never tried to put one on a standard 20/25 crank though.

rodger1 Apprentice

rodger1

Posted
Posted
Are these slightly out of focus pics. any help?

now that vl pump is that a turbo pump or a n/a pump as they have different part numbers. also when i rebuilt my rb30 i try'd to source a new pump from holden but

pretty much everything engine related is no longer avaliable so i took my vl turbo oil pump part numbers to nissan and got a new pump but i was told it was a common pump

ass it was a r32 gtr pump. i don't know if they we're originally or if they we're just revised to that but thats my 2cents

grigor Rising Star

grigor

Posted
Posted
NOPE.

On the RB30 oil pump GEAR it only has 8mm surface area on the crank collar itself, where RB20-25-26 have almost 25mm surface face on the crank.

Sad story, It's even worse than that.

The contact area is half the gear's thickness, about 4mm contact with the crank. (This is from a N/A Rb30)

Always believed they ran the same pump as the turbo, but it's been ages, those photos are many years old.

post-13483-1238813044_thumb.jpg

proengines Rising Star

proengines

Posted
Posted
Are these slightly out of focus pics. any help?

I took that second slightly out of focus photo comparing the 4 gear sets, that is a regular non turbo VL gear set. They wont fit a 33 or later crank or one fitted with a normal collar as the longer drive wont fit through the pump housing. I have made custom collars to suit them, they just need the drive area narrowed. Mostly I make those collars for the guys with the RD28 diesel engines, they are really hard on pump drives and the pump housing is different so you can't run a 25/26 pump on them. If you want to run a VL pump, unless the drive is perfect I'd still fit a collar to it. I'm making a collar for an RD28 this afternoon, I'll take some photos to show the difference.

I've never seen one of the vl pumps with broken gears but they are lower volume than a g-rotor pump. The turbo pump is slightly bigger than the NA one. They also run very low pressure at idle, from memory around 100kpa though it rises very quickly once the revs rise.

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