Reply to thread

See what others are reading now! Try Forums > Current Activity

Message: <blockquote data-quote="zephuros" data-source="post: 2809054" data-attributes="member: 2617">Yeesh! Ths one is often misunderstood...I'm gonna say it only once...DO NOT CONFUSE OIL PRESSURE AND OIL FLOW/CAPACITYNO, oil pumps are not for increasing power directly. If anything, the larger capacity pumps require more energy bled off from the engine (known as parasitic horsepower loss) to turn them, so in fact they do consume more power! An oil pump serves to flow oil through the engine. The resistance to flow due to oil being pushed into galleries/bearings/valvetrain etc is what causes the pressure to build! If there were no resistance there would be no pressure...Large capacity oil pumps bring up the capacity of the oil flowing through engine while keeping the oil pressure almost the same. Most oil pumps will have a pressure dump valve (or relieve valve) to do this. It is necessary in order maintain the pressure in the engine as bringing oil pressure up too much is BAD!!!!!!! it can cause all kinds of unwelcome problems like increasing blowby or even tearing open your oil filter! Anyway if you are thinking about rebuilding your RB, I would imagine you are planning to blueprint it ( as what the likes of Tomei, Os etc will do). You will want it better balanced and to run much much closer tolerances for the main bearings and valvetrain... yes?If the answer is YES, then consider this...You will need even less oil flow to float those bearings on!!! Why? Coz you will now need less oil flow to mintain a given pressure when revving up the engine!!! So then why do Tomei, HKS, Jun etc etc make oil pumps? There's no secret here... it's all to do with the materials they use and the durability over time/revs. The failures that occur to the standard pumps are a result of wear and fracture and eventual disintegration of the moving parts, most of which are machined castings... The after market manufacturers will use either different materials or different processes on the materials (heat treatment, temper, hardening etc) which result in better durability...SO unless you're planning on revving you engine to 10,000 revs all the time, i'd think again about the pump... oh and incidentally, VIBRATION at high rpm is the main killer for RB blocks, not oil pressure... How does one overcome harmonics problems? Just balance the damn engine! Russ, you think this is a sufficient answer? :)</blockquote>

Verification

The Marketplace Latest

Mugen MS-C Full Bucket Seat Civic Type R FL5 FK8
- Started by aycy
- Engine and Performance
Boost Logic Boostlogic Oil Cooler Kit R35 GTR GTR35
- Started by aycy
- Engine and Performance
Linney IHI 800WHP Turbo Kit R35 GTR35 GTR
- Started by aycy
- Engine and Performance
Varis R35 GTR GTR35 Front Bumper
- Started by aycy
- Exterior and Body
HKS Spec R Titanium Exhaust with Y pipe R35 GTR GTR35
- Started by aycy
- Engine and Performance
2016 BMW 120i LCI M Sport F20 1.6 Auto
- Started by aycy
- Cars for sale
GR Yaris H&R Front Rear Anti Roll Bar
- Started by aycy
- Chassis and Wheels
BBS RI-A 10J God Spec FK8 FL5 Honda Civic Type R...
- Started by aycy
- Chassis and Wheels
Rays Gram Lights 57CR GR Yaris Subaru Impreza Rim...
- Started by aycy
- Chassis and Wheels
2019 Toyota FORTUNER 2.4 VRZ 4X4 (A) Diesel
- Started by aycy
- Cars for sale

Posts refresh every 5 minutes

Bumblebee Getaway advertisement by Chevrolet

https://www.zerotohundred.com/wp-content/uploads/2011/06/bumblebee.jpg

The new Transformers movie, should be out soon, catch the hype where Chevrolet showcases its lead character, Bumblebee, potrayed by a yellow...

Just found out what M in M-Spec stands for.

The M-Spec has been on sale since the 8th of, 2001 and is the result of the first change to the GT-R made by the new team of engineers headed by Kazutoshi Mizuno (the former chief engineer at Nissan Le...

radiator checklamp what does it mean?

hi,

flush my radiator yesterday, put in 2 bottle of coolant.

now the radiator checklamp turn on.. check my radiator water all

ok. anyone know what does it mean? maybe got something to do

with the water pump?

tq