Lightweight Pulleys

[Matts-gen2]

What benefit is there of the electric fan?

just less drain on the engine?

[grinder]

yeah its less drainage and you can loose the cowl - make the engine bay look tiny at that point

the stock fan is good for about 300 bhp though !!!

you can get a water hose temp switch - so when the temp gets to a set point if turns the rad fan on - mate of mine just fitted one on his landy

[grinder]

chris - where is the FD fan switch - is it a simple swap out - or something rather complex ?

[Grizzly]

well the Fd\'s fan switch is on the back of the water pump housing, when i fitted one to my T2 all i did was drill and tap the T2 housing in roughly the same area. Worked well.

I did have a switch set up just as you suggested, TBH i found it easier to wire up as you could get the Switch closer to the Fans. When i did that mod i also fitted a 10lb flywheel and removed the PS and it sure reved allot easier. The problem is my next mod after that was a To4R kit, 4x1000cc injectors,Fuel reg, twin FD pumps and a Microtech ecu so as you can properly tell i skipped a large chunk of the stock turbo coaxing out.

[Matts-gen2]

Just attempted to change the alternator pulley for the twin pulley, but the bolt through the middle of the socket nut, i mean the one with the allen key head is burred off, ROUND!

Anyone have any idea if they are sold separtely or have any suggestions how to get it off.

With the intention of getting it back on today.

I am right in thinking that the allen key headed bolt needs to come off.  Been told that it retains the pulley on the alternator.

Matt

[Grizzly]

Contact Tim or Matt at RxMotors //www.rxmotors.co.uk they will be able to help you.

[AdrianE]

Can anybody help me? I already have a lighter flywheel with an Exedy twin plate clutch on my FD. If the engine only needs to drive the alternator, is there any point in removing the front-most part of the front pulley wheel? It only weighs about 600g and it will give me more space in the engine bay (for all my future mods)...but is there any downside to this? Will it make any difference?

Also does anyone have any info on how much you can lighten the flywheel/rotors/pulley etc before it becomes a problem?

Cheers,

Adrian

[Grizzly]

I think your getting confused a bit, On an FD you use an Aftermarket Pulley kit with a Larger Waterpump pulley as part of the kit required to remove the Air pump assembly, there is little to no HP gains in doing it but if you use the Stock Pulley when you remove the Pump because of the small Belt to Waterpump contact the Belt has to be overtightened which in turn puts extra stress on the Alt bearings etc. People do tend to fit Underdriving Pulleys (basicly where you gear the Ancillarys down so they do less revs at a set engine speed) this is ok as there is less energy used to turn stuff like the Alt and water pump etc BUT!! if you don\'t drive your car allot or use it for short trips etc you may find your battery starts to struggle more.

As for how much you can Lighten a Flywheel, it realy does depend on what you want to do with the car, if you are going to drive it and may come into contact with Traffic once in a while or you like drag racing don\'t go below about 9lbs (which is very light anyway) and a Bit of advice go for a decent Quality Chromalloy (sp) flywheel, Alloy ones are renound for warping at high Hp levels and they tend to strip the Pressure plate - Flywheel threads after the Third or Forth clutch you fit.

[AdrianE]

Grizzly, thanks for the info, I\'m sure I already have a lighter steel flywheel though (it came with the Exedy 2-plate clutch), and I don\'t have power steering, aircon, water pump, air pump, as I took them all off! The only belt the engine uses is to power the alternator!

I\'m going to remove \'part\' of the bottom pulley (there are 2 parts) that used to drive the water pump etc. This weighs 600g...not much compared to the 10-15lbs weight of the flywheel...so I guess this is OK