Converter vibrations
Converter vibrations Help!!!!!!!!
I just installed a TrandGo kit, a trans cooler, and a Yank Super Thruster 3500 converter into the 2000 'bird. Now it has a very heavy thumping vibration to it. Sitting in park or neutral just slowly adding revs it feels like an old clothes washer spinning out. I called Yank and they said that they zero balance all converters before painting and that their process is set up so that they can not miss one. They said that I should check the mounting bolts and see if it has a balance weight on it.
Any other things that I should check?
Is there something else that could be causing the vibrations that the stock heavy converter was masking?
thanks for any help that you can give,
Albert G. Fox II
00 Formula with lid, K&N, & Loudmouth with bad vibrations
I just installed a TrandGo kit, a trans cooler, and a Yank Super Thruster 3500 converter into the 2000 'bird. Now it has a very heavy thumping vibration to it. Sitting in park or neutral just slowly adding revs it feels like an old clothes washer spinning out. I called Yank and they said that they zero balance all converters before painting and that their process is set up so that they can not miss one. They said that I should check the mounting bolts and see if it has a balance weight on it.
Any other things that I should check?
Is there something else that could be causing the vibrations that the stock heavy converter was masking?
thanks for any help that you can give,
Albert G. Fox II
00 Formula with lid, K&N, & Loudmouth with bad vibrations
Re: Converter vibrations That's really wierd. Can you feel the same vibration when the car's in gear? How's the power? It's true, all Yank converters are carefully balanced before they're shipped off. Have you driven the car much? It would be interesting to see if it still does it with some miles on it.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Re: Converter vibrations Al, how much have you actually driven the car (miles since install)? Looking for a little more input. So are you saying vibe doesn't go away in drive too?
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Re: Converter vibrations The stock converter does mask some vibration because of its larger mass and diameter. Most people have noticed a bit more vibration in the 1200 - 1700 rpm range with it disappearing by 2000.
There can also be some pcm learning after switching if you did not reset the pcm.
Some people have found this goes away by unattaching the converter from the flexplate and rotating the converter 90 or 180 degrees and bolting it back up.
There can also be some pcm learning after switching if you did not reset the pcm.
Some people have found this goes away by unattaching the converter from the flexplate and rotating the converter 90 or 180 degrees and bolting it back up.
Re: Converter vibrations </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Patrick G:
<strong>That's really wierd. Can you feel the same vibration when the car's in gear?
Yes it's terrible going down the road. If I shift to neutral at 70 and let of the gas it almost goes away.
How's the power?
Car is running great I was really happy with the results until I noticed the vibes. I didn't notice it on initial run but I was pretty excited to have the car running again. So maybe I missed it.
It's true, all Yank converters are carefully balanced before they're shipped off. Have you driven the car much?
Just 52 miles so far.
It would be interesting to see if it still does it with some miles on it.
This vibration worries me as to possible collateral damage so I probably won't drive it until I get it solved.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Al
<strong>That's really wierd. Can you feel the same vibration when the car's in gear?
Yes it's terrible going down the road. If I shift to neutral at 70 and let of the gas it almost goes away.
How's the power?
Car is running great I was really happy with the results until I noticed the vibes. I didn't notice it on initial run but I was pretty excited to have the car running again. So maybe I missed it.
It's true, all Yank converters are carefully balanced before they're shipped off. Have you driven the car much?
Just 52 miles so far.
It would be interesting to see if it still does it with some miles on it.
This vibration worries me as to possible collateral damage so I probably won't drive it until I get it solved.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Al
Re: Converter vibrations </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Ragtop 99:
<strong>The stock converter does mask some vibration because of its larger mass and diameter. Most people have noticed a bit more vibration in the 1200 - 1700 rpm range with it disappearing by 2000.
There can also be some pcm learning after switching if you did not reset the pcm.
Some people have found this goes away by unattaching the converter from the flexplate and rotating the converter 90 or 180 degrees and bolting it back up.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">This vibe doesn't go away.
The battery was unhooked for days so the PCM should be reset.
Glad to hear you suggest rotating the converter as that was a thought that I had too.
Al
<strong>The stock converter does mask some vibration because of its larger mass and diameter. Most people have noticed a bit more vibration in the 1200 - 1700 rpm range with it disappearing by 2000.
There can also be some pcm learning after switching if you did not reset the pcm.
Some people have found this goes away by unattaching the converter from the flexplate and rotating the converter 90 or 180 degrees and bolting it back up.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">This vibe doesn't go away.
The battery was unhooked for days so the PCM should be reset.
Glad to hear you suggest rotating the converter as that was a thought that I had too.
Al
Re: Converter vibrations Patrick,
I answered all your questions in my second post. But I included them in a quote of your post so I guess thier not that odvious.
After I was done with the install I had the wife get in the car (still 2 feet in the air)and start it up. I had her select each gear with the brakes locked up. Checked and topped off the fluid. Then I had her put it in reverse and let off the brakes. Then I had her run it thru all the gears up to about 60mph. I checked the fluid and it was 1 pint low. I checked under the car and there were no fluid leaks. I asked her last night and she said that the car was as smooth as silk on the jack stands.
The next day I took it for a spin up the road. Easy thru all the gears to see that it was shifting OK. Then I waited for it to get warm enough for the torque converter to lock up. It took 1.5 miles then it locked fine. I then made a u-turn and gave it about 50-60% throttle up thru the gears and it was fine. So I stopped to do a WOT run and it was near perfect. I didn't notice any vibes other than normal. With a total of 5.5 miles elapsed. I checked the fluid again, still full.
I drove it to work the next day and notice right from when I started it up that it was rougher than before. As you step the revs up it gets worse. And it's quite bad at highway speeds unless you throw it into neutral and let off the gas. Then the vibe diminishes.
I hope this info will help you diagnose the problem.
thanks,
Al
I answered all your questions in my second post. But I included them in a quote of your post so I guess thier not that odvious.
After I was done with the install I had the wife get in the car (still 2 feet in the air)and start it up. I had her select each gear with the brakes locked up. Checked and topped off the fluid. Then I had her put it in reverse and let off the brakes. Then I had her run it thru all the gears up to about 60mph. I checked the fluid and it was 1 pint low. I checked under the car and there were no fluid leaks. I asked her last night and she said that the car was as smooth as silk on the jack stands.
The next day I took it for a spin up the road. Easy thru all the gears to see that it was shifting OK. Then I waited for it to get warm enough for the torque converter to lock up. It took 1.5 miles then it locked fine. I then made a u-turn and gave it about 50-60% throttle up thru the gears and it was fine. So I stopped to do a WOT run and it was near perfect. I didn't notice any vibes other than normal. With a total of 5.5 miles elapsed. I checked the fluid again, still full.
I drove it to work the next day and notice right from when I started it up that it was rougher than before. As you step the revs up it gets worse. And it's quite bad at highway speeds unless you throw it into neutral and let off the gas. Then the vibe diminishes.
I hope this info will help you diagnose the problem.
thanks,
Al
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Re: Converter vibrations Well good news. It's not the converter. I unbolted it from the flexplate and started te engine. The vibe was still there. I would dare to guess that it has always been there and that the heavy stock converter masked it.
Now I'll have to get to the track and see what kind of gains I will get.
Thanks for all the help!
Al
Now I'll have to get to the track and see what kind of gains I will get.
Thanks for all the help!
Al
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