100 Series Supercharger kit

[leary393]

Hi there my dad has just bort a low kms 100 Series Cruiser. 4.2 diesel.
He wants a little more power out of it.
I understand every1 is putting turbo kits on them.
But is there any1 doing a supercharger kit.
After all this would be beter power for up the bush?
If not Why not? What are the pro's and cons of a supercharged vs turbocharge 4.2 diesel.

[Z()LTAN]

Superchargers have a limited output.

Turbos are cheap, easy, effective and very powerful when done correctly.

Anyhow if you still want to go the Supercharger rout here is the mob that does them.

http://www.sprintex.com.au/Toyota_Landc ... r_Kits.asp

[Auto-Craft]

supercharger is parasitic power, turbo is not.

[it takes engine power to drive a supercharger, a turbo is free]

[leary393]

Corect me if I'm wrong But the power you loose through driving your supercharger is returned in more power (boost). Thus being a cycle, everything that is run from the motor takes power from it not all put it back, with the exception of a turbo of coarse. My experience with turbo and supercharging leads me to beleive that a supercharger would be better suited to bush work.

Has any1 had one of these sprintex kits on.
Any feedback would be great. How long do they last?
How do they compare to a turbo?

[dumbdunce]

nothing is free. even turbochargers require significant power to drive. they are a massive exhaust restriction and it takes a lot of energy to compress a lot of air.

the upside of superchargers is their instant response - they make boost right from idle and make full boost straight away.

the downside of superchargers is, well, they are many - cost, complexity, poor fuel economy, weight, lubrication and maintenance, cost and did I mention cost. they require crankshaft power to drive, so using your 1HZ as an example, if the supercharger requires 20 kW to drive, to generate say 150kW at the flywheel, the crankshaft needs to make 170kW. the drive for the supercharger is delivered through the harmonic balancer, which is designed to drive only the alternator, fan and water pump. 1H engines has a checkered history when it comes to harmonic balancers - they are known to split through the rubber but worse they are known to work loose and flog out the keyways in the crankshaft, resulting in an expensive rebuild to replace the crank.

I have seen the sprintex installed in an 80 series - it worked great when it worked but had issues with belt slip, and shredded balancers.

turbos by comparison are cheap, reliable, maintenance free and easy to install.

[dumbdunce]

supercharger is parasitic power, turbo is not.

[it takes engine power to drive a supercharger, a turbo is free]

if turbos were free power, every engine would have one. it takes the same power, the same amount of fuel, to compress that air whether it is driving a turbo or a supercharger. the discrepancy in fuel consumption is mostly from the fact that a supercharger has a mechanical drive that is running all the time, and the boost is there whether you want it or not, all the time, so a supercharger ends up compressing a lot more air than a turbo.

any kind of forced induction takes engine power to drive, but some use more than others.