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View Poll Results: best RB26 fan system
viscous - if it ain't broke, don't fix it 119 63.30%
electric - on when you want it, off when you don't. Also gains you about 4bhp 69 36.70%
Voters: 188. You may not vote on this poll

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Old 2nd May 2016, 06:06 PM   #61 (permalink)
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Quote:
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Be aware a lot of alloy "high performance" rads actually have lower heat rejection than a new OE one. I had two well known after market alloy rads for the JZA80 twin turbo Supras tested and they both were markedly inferior to a new stock one.... To have a better rad made inside the same height and width restrictions, even with a thicker core (which is not necessarily a good thing to do)

Im in no doubt that is true for the Supra, however Im not sure this is true for Skylines.. Have you seen the stock radiator? Its like 2mm thick
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Old 16th May 2016, 09:48 PM   #62 (permalink)
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what if guys,

if i tell you , you can have electric fans and a electric waterpomp programmable on Temp or Rpm like you prefer?

With a controller you hook up to Link, haltech, motec ECU and say when engine is cold run waterpump on 15% and when temps goes up % of pump goes up.

Or when you prefer make a table in ecu and set % on Rpm, when you receive with pump a flow chart from N1 pump and flow chart of electric pump, so you can program the electric pump just the same as N1 pump ?

would you guys buy a kit for RB engine electronic waterpump ?
As i am working on it for couple of months now on a electronic waterpump
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Old 16th May 2016, 10:48 PM   #63 (permalink)
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Absolutely.

So your pump bolts on in the OEM location. Sounds like a winner to me provided you have the pump flow rate up to speed.

It will provide more WP pulley to thermo fan/radiator clearance for big core radiator setups. My thermo fan motor sits pretty close to the WP pulley due to the 55mm core size.

I was thinking of a similar thing, making a bolt on housing to retrofit the pump from a davies craig EWP150 onto the front of the block.

I'm already using PWM control for fan speeds and an AUX coolant pump on a remote oil to coolant heat exchanger. The system works a treat. Engine coolant and oil never go above 82. This on a 385kw(98) 500kw(e85) 3.4lt RB.
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Old 16th May 2016, 11:15 PM   #64 (permalink)
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pump flow rate will be tested next weeks VS N1 pump.

But i know now already, it will be F*cking good lol

More info and pics here : https://www.facebook.com/Gojira.GTS/...37290036317385

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Old 26th May 2016, 01:00 PM   #65 (permalink)
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Originally Posted by Gojira-R32 View Post
what if guys,

if i tell you , you can have electric fans and a electric waterpomp programmable on Temp or Rpm like you prefer?

With a controller you hook up to Link, haltech, motec ECU and say when engine is cold run waterpump on 15% and when temps goes up % of pump goes up.

Or when you prefer make a table in ecu and set % on Rpm, when you receive with pump a flow chart from N1 pump and flow chart of electric pump, so you can program the electric pump just the same as N1 pump ?

would you guys buy a kit for RB engine electronic waterpump ?
As i am working on it for couple of months now on a electronic waterpump
You're goddamn right i'd run that!

XD
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Old 26th May 2016, 06:38 PM   #66 (permalink)
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Does a viscous fan really require 4HP to turn?
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Old 27th May 2016, 07:49 AM   #67 (permalink)
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Does a viscous fan really require 4HP to turn?
I suspect they're more miniature ponies than full-blown horses....







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Old 27th May 2016, 07:55 AM   #68 (permalink)
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I expect it's less that 300w, but then again removing the AC saves 100kg and 60hp.
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Old 27th May 2016, 08:37 AM   #69 (permalink)
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the AC saved me of weight 18Kg for everything on a scale measured.
Hicas was 38Kg

But engine revs faster, more response, black advanced alternator, alu pulley on alternator and PS pump, Nismo flywheel of 6.3kg instead of 12.5kg
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Old 27th May 2016, 08:37 AM   #70 (permalink)
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You're goddamn right i'd run that!

XD

Pump is now with CNC cutter, and will be made in black anodised azgainst corrosion, 1/8NPT fitting for a sensor and a 6mm tread for a Air bleed screw
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Old 27th May 2016, 09:57 AM   #71 (permalink)
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the AC saved me of weight 18Kg for everything on a scale measured.
Hicas was 38Kg

But engine revs faster, more response, black advanced alternator, alu pulley on alternator and PS pump, Nismo flywheel of 6.3kg instead of 12.5kg
You say the engine revs faster with ac removed?
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Old 27th May 2016, 10:01 AM   #72 (permalink)
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Definitely interested in this depending on the results, an electric pump offers many advantages over a mechanical one so will be interested to see how things progress!

Keep us informed
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Old 27th May 2016, 10:57 AM   #73 (permalink)
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You say the engine revs faster with ac removed?
Yes, less drag, a free rev, goes faster up and back down to idle Rpm.
Just 1 thing will change very small, but all the things together is noticable

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Definitely interested in this depending on the results, an electric pump offers many advantages over a mechanical one so will be interested to see how things progress!

Keep us informed
info here : https://www.gtr.co.uk/forum/449770-rb...lt-option.html
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Old 27th May 2016, 11:29 AM   #74 (permalink)
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I'm lead to believe that the biggest negative for electric water pumps is reliability. Seen many threads on the net from various forums detailing multiple failures of Davies Craig water pumps in the past....

I presume this one will be different??



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Old 27th May 2016, 11:43 AM   #75 (permalink)
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The dodge viper had a mechanical pump and an electric pump.
A mechanical pump will always be more reliable and when driven from the same belt as the alternator, you know then the belt fails before you overheat the engine.
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Old 27th May 2016, 12:14 PM   #76 (permalink)
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I'm lead to believe that the biggest negative for electric water pumps is reliability. Seen many threads on the net from various forums detailing multiple failures of Davies Craig water pumps in the past....

I presume this one will be different??



TT
Yes that's certainly an issue, but surely there must be some reliable electric pumps out there?

I mean its just an electric motor driving a shaft with an impeller on it, the mechanical bit is pretty much idiot proof as it would be the same set up as a mechanical pump.

That just leaves the motor, reliable brushless DC motors are readily available in industrial applications, although maybe that's why there are problems if 'cheap' motors are being used on the aftermarket stuff!

If the big OEM's like BMW/Audi etc use them surely the reliability is there? (somewhere?)
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Old 27th May 2016, 12:33 PM   #77 (permalink)
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I'm lead to believe that the biggest negative for electric water pumps is reliability. Seen many threads on the net from various forums detailing multiple failures of Davies Craig water pumps in the past....

I presume this one will be different??

TT
with this setup will come a fail safe, when pump dies, driver gets a warning, and a signaal goes to ECU , so you can ECU respond to it as programmed
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Old 10th April 2017, 05:43 PM   #78 (permalink)
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how did it go with the electric pump setup?
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Old 10th April 2017, 05:57 PM   #79 (permalink)
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CNC cutter is making it, i am waiting for it
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Old 10th April 2017, 08:58 PM   #80 (permalink)
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Lol it's been a year tell him to get a move on!
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