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20V VVT Pully testing

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20V VVT Pully testing

Postby neo » Mon Apr 06, 2009 12:28 pm

Hey all,

Has anyone found a way to test VVT Pulleys when the engine isnt going to find out how worn out it is / how bad the ticking will be when it goes back on.

I'm doing a cam-belt and I have two to choose from, so seeing if there is a way I can pick the least worn one :)
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Postby 1I1 » Mon Apr 06, 2009 12:33 pm

viewtopic.php?t=30098 :wink:
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Postby thegreatestben » Mon Apr 06, 2009 1:20 pm

Those vids are long gone
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Postby Mr Revhead » Mon Apr 06, 2009 2:31 pm

hmmm i'll have to see if i can dig them up again

neil, if you have one you know is good you maybe able to compare free movement...
does anyone have one they know is stuffed to see if there a lot of slop in them when knackered?
from memory there maybe evidence of oil leaking from them as well
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Postby neo » Mon Apr 06, 2009 3:38 pm

1I1 wrote:http://forums.toyspeed.org.nz/viewtopic.php?t=30098&sid=7b47153aef7508329fd6a6e7c7ee3c48 :wink:


Thanks, but I'm trying to find out if there is a way to test them if the engine is sitting on the workshop bench.. :?
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Postby RS13 » Mon Apr 06, 2009 6:17 pm

I've got a well-poked one (car sounded like a diesel!) at home if you want me to measure play etc, for comparisons' sake.
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Postby AceSniper » Mon Apr 06, 2009 9:19 pm

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Postby RS13 » Mon Apr 06, 2009 9:35 pm

Hey thats' awesome, how did you get that apart? And so what exactly craps out in them?
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Postby frost » Mon Apr 06, 2009 9:43 pm

RS13 wrote:Hey thats' awesome, how did you get that apart? And so what exactly craps out in them?


i second that Q
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Postby AceSniper » Mon Apr 06, 2009 11:17 pm

that image has come off another forum, I have opened one up (used a grinder+cutting disc) but never took pics, they only run on engine oil and have the spring....

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Postby neo » Mon Apr 06, 2009 11:57 pm

I pulled one apart using a press.

its 2 helical gears one inner one outer, both going in different directions.

The problems either going to be the spring getting weak or the gears wearing out.
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Postby KinLoud » Tue Apr 07, 2009 8:34 am

Whatever you do...
DON'T take any VVTi pulley apart if you want to use it again!
They are often setup in the factory with a specific preload, and won't work correctly if you stuff with them.
The factory manuals specifically state "do not disassemble"

I have been given a couple of 3sge altezza ones already taken to bits so I can post pics if anyone wants.

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Postby headshotnz » Tue Apr 07, 2009 2:34 pm

Hi guys, my car is making the same noises, plus leaking a bit of oil, so am assuming it could be the VVT pully, will check tonight by appling the 12v to the plug that was mentioned.

If it is broken, what do i do about fixing it? buy a intake cam for 20v?
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