Alu crank pulley.. are they good?

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Alu crank pulley.. are they good?

03-29-2010, 03:40 PM

Post: #20

Miguel - Newera Offline

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Techno Pro Spirit, who have been building 4A-GE race engines for over 20 years don't recommend aluminium pulleys for any engine without a dynamically balanced crank (i.e. with pulley fitted at time of balancing) and they certainly don't recommend it for any race 4A-GE engine reving over 8,000 rpm. We've just had a full build engine from them for a customer in Europe - and the subject came up. Despite having a full Jun billet crank and many other upgrades on this N2 engine - it's running a brand new Toyota original crank pulley with harmonic damper.

You might be lucky reving at over 8,000 with an aliminium pulley, but is it really worth the risk of damaging your crank bearings, after doing an expensive high performance engine build?

I run a standard pulley on my engine, for what it's worth.

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Messages In This Thread

Alu crank pulley.. are they good? - Allexz - 01-22-2009, 10:19 PM

[] - eight-six - 01-22-2009, 10:32 PM

[] - Allexz - 01-22-2009, 11:52 PM

[] - hachirokuGTV - 01-23-2009, 12:05 AM

[] - jasper - 01-23-2009, 12:19 AM

[] - [Walaki]D`Lair - 01-23-2009, 04:42 AM

[] - Niek - 01-23-2009, 12:34 PM

[] - Allexz - 01-23-2009, 02:53 PM

[] - aussiefan - 01-23-2009, 03:02 PM

[] - Allexz - 01-24-2009, 12:39 AM

[] - gon - 01-24-2009, 12:49 AM

[] - jondee86 - 01-24-2009, 05:05 AM

[] - Allexz - 01-24-2009, 01:38 PM

[] - NonStopTuning - 02-27-2010, 08:03 PM

[] - NonStopTuning - 02-27-2010, 08:05 PM

[] - 4000GT - 03-27-2010, 08:01 AM

The dangers of power pulleys... - jondee86 - 03-27-2010, 05:04 PM

[] - vlgi - 03-29-2010, 11:57 AM

[] - Miguel - Newera - 03-29-2010 03:40 PM

Something for nothing.... really ?? - jondee86 - 03-29-2010, 03:45 PM

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