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Author Topic: 1.8T TTE420 strange knock CFs  (Read 51267 times)
pedrosousa
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« Reply #30 on: January 25, 2016, 04:03:10 PM »

I tried another tensioner, but didnt get the car out to log it.

My tuner says the value in 093 should be near to 0.

Will drop the other tensioner in and give the car a log see what it does, but the data shows timing could be out, although I am certain its right.
I agree with your tuner!!!
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carsey
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« Reply #31 on: January 25, 2016, 06:45:34 PM »

2 used tensioners on each.

Noticed the timing could be out ever so slightly at the crank.  Got a new belt to try it and see what happens.



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vwaudiguy
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« Reply #32 on: January 25, 2016, 07:04:56 PM »

2 used tensioners on each.

Go new or go home.  Smiley

Also, the crank damper usually has a good amount of play even when all 4 of the bolts are without play. Being off by a whole tooth looks like a lot, but it depends whether you're in the middle of the slack the damper has. I assume the pic is with the cam lined up perfectly?
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carsey
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« Reply #33 on: January 26, 2016, 06:07:10 AM »

Cams are perfect.



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carsey
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« Reply #34 on: January 30, 2016, 04:44:04 PM »

Well the timing is bang on...so next step to fit a vernier and tweak it until it gets 0KW
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pedrosousa
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« Reply #35 on: January 30, 2016, 04:47:59 PM »

Fit a vernier were??
What's the procedure??
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ddillenger
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« Reply #36 on: January 30, 2016, 04:54:22 PM »

Well the timing is bang on...so next step to fit a vernier and tweak it until it gets 0KW

You don't understand. Regardless of what it says there, the change should be ~22. It should not be 22, then jump to 27.
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carsey
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« Reply #37 on: January 30, 2016, 04:57:01 PM »

Surely easy way to see that is to flatline the whole VVT map and see what it does?
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carsey
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« Reply #38 on: January 30, 2016, 05:12:20 PM »

Surely the correction factor should still be 0KW.....even on idle.  where mine is -8KW
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ddillenger
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« Reply #39 on: January 31, 2016, 07:03:33 AM »

+/- 4 is acceptable. However you don't know where the error is. Between the cams from a bad tensioner, or the cam/crank correlation.
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carsey
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« Reply #40 on: January 31, 2016, 09:18:25 AM »





Sorted.

Be interesting to see how it drives on the road and how log looks after.
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pedrosousa
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« Reply #41 on: January 31, 2016, 12:54:23 PM »

What have you done?
And how??
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carsey
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« Reply #42 on: January 31, 2016, 12:55:07 PM »

Fitted an adjustable pulley and tweaked it until it read 0KW/CF
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fknbrkn
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mk4 1.8T AUM


« Reply #43 on: January 31, 2016, 02:33:40 PM »

Fitted an adjustable pulley and tweaked it until it read 0KW/CF
oh youre cheater!!!
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carsey
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« Reply #44 on: January 31, 2016, 03:10:00 PM »

How?

The timing marks were bang on physically.  68teeth between the 2 points means the belt cant be out
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