Incorrect tooth clocking on ATI dampers
03-21-2018, 04:10 PM
#63
Junior Member
Join Date: Mar 2011
Location: VA
Posts: 65
Total Cats: -2
My engine is the one in the OP 
I sent an email out to ATI following fab9's email format. Hopefully they can resolve this issue in a timely manner because I have waited months for my motor to be finished just to hit this snag at the last minute. Andrew, I sent you an email on how I'd like to proceed forward.
I sent an email out to ATI following fab9's email format. Hopefully they can resolve this issue in a timely manner because I have waited months for my motor to be finished just to hit this snag at the last minute. Andrew, I sent you an email on how I'd like to proceed forward.
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03-24-2018, 10:03 PM
#68
+1 for Andrew/Trackspeed for catching this.
Hopefully the pulley itself can be removed from the damper assembly without destroying the damper. ASSuming it can, because why wouldn't it be. Rehobbing the keyway is a good fix for the crafty enginebuilder but why bother. High chance ATI will make another run of pulleys with the teeth oriented to the keyway properly and offer a free exchange. AFAIK they make the pulleys in house using the same equipment we use to make ours, so turnaround should be pretty quick. Teeth are added after the part comes off the lathe, so it's up to the operator to orient the key correctly. It's a manual trim that takes skill and is easy to **** up.
LOL @ QC in aftermarket performance companies. First article what???
Hopefully the pulley itself can be removed from the damper assembly without destroying the damper. ASSuming it can, because why wouldn't it be. Rehobbing the keyway is a good fix for the crafty enginebuilder but why bother. High chance ATI will make another run of pulleys with the teeth oriented to the keyway properly and offer a free exchange. AFAIK they make the pulleys in house using the same equipment we use to make ours, so turnaround should be pretty quick. Teeth are added after the part comes off the lathe, so it's up to the operator to orient the key correctly. It's a manual trim that takes skill and is easy to **** up.
LOL @ QC in aftermarket performance companies. First article what???
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03-25-2018, 09:01 AM
#69
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Join Date: Aug 2010
Location: Sixshooter's Basement
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You need a puller. I have one similar to this: https://www.amazon.com/HFS-Pcs-Harmo...dp/B00KROI574/
--Ian
--Ian
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03-29-2018, 01:28 PM
#70
Newb
Join Date: Mar 2018
Posts: 44
Total Cats: 11
Damper exchange email sent out 9 days ago - still no sign of a call tag in email. At this rate i'd rather pay to have my damper returned so i can get the replacement here to get my motor together for the global time attack event.
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03-29-2018, 01:35 PM
#71
I have not seen the call tag for ours either. That being said, it's completely unrelated to how fast you get your damper back. If they had your ATi 2 days ago they still won't have the replacements complete for a week or so. Believe me, I'm putting tremendous pressure on these guys.
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04-02-2018, 03:54 PM
#75
Brian is correct - There will not be an adjustable cam gear for a VVT system because of the hydraulic action that takes place within the gear.
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04-02-2018, 04:13 PM
#76
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Location: Santa Clara, CA
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--Ian
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04-02-2018, 04:28 PM
#77
If you adjust the exhaust side, within the range of the gear to compensate for whatever the crank is off, what happens to the intake side with respect to the VVT operation? Personally, I'd opt to get the balancer fixed. I realize my question depends on how far is the damper off. Seems from what we'e seen that number is somewhat variable.
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04-02-2018, 04:33 PM
#78
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If you adjust the exhaust side, within the range of the gear to compensate for whatever the crank is off, what happens to the intake side with respect to the VVT operation? Personally, I'd opt to get the balancer fixed. I realize my question depends on how far is the damper off. Seems from what we'e seen that number is somewhat variable.
Assuming that to be the case, a mis-clocked damper just moves the "zero" point of the intake cam to being plus-or-minus however many degrees it's off by. So to compensate you just add or subtract that number from all of the tables for the VVT cam. At one end that may move it outside of the physically allowable range, at the other end you now have more range.
--Ian
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04-02-2018, 05:01 PM
#80
Junior Member
Join Date: Jul 2016
Posts: 92
Total Cats: -4
now imagine you are from europe....but well we are all just a humans and errors in production happens.
I jist have to wait for my damper to arrive from crank+clutch flywheel balancing and check how bad it is. Massive thumbs up to andrew for pointing out this and to fab9 for true customer service!
I jist have to wait for my damper to arrive from crank+clutch flywheel balancing and check how bad it is. Massive thumbs up to andrew for pointing out this and to fab9 for true customer service!
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