Rattly Wevo in 915

Tremelune · 12-25-2015, 08:40 AM

I have an '84 that the previous owner installed a Wevo shifter in. It rattles in 3rd and 4th gear. How do I cure this? My current solution is to put my hand on it and hold it in a position where it stops...That's unsustainable.

I recently had the transmission adjusted, and it does shift better, but now there's that noise...I really don't want to compromise the feel/performance of the shifter in the (already finicky) 1st and 2nd gears, but 3rd and 4th have never been a problem.

Also, does the stock boot fit over the Wevo shifter? It looks fine naked, but I have this weird fear of someone dropping something down into it...I have a dream that a firm boot will prevent the rattling...

jimtweet · jimtweet's Garage

If you look at the front of the shift housing there should be a big nut and Allen bolt. This adjusts the tension on the shifter. Takes some tinkering to get just right.

I had a stock leather boot on my wevo.

Green6 · Green6's Garage

Yes, the stock rubber boot fits nicely over the Wevo shifter. I removed the shift knob, and slid the boot over the shaft onto the base. With the large lever type shaft it is a tight squeeze, but it fits.

Gordo2 · Gordo2's Garage

Does the shifter actually rattle (wobble around generating noise) - or transmit transmission noise when in the 3-4 shift plane?

My Wevo shifter transmits transmission noise (whine - or more of a low growling sound that changes with RPM) in 3rd and 4th, but I think its due to the combo of Wevo PSJ and semi-solid trans mounts that are transmitting noise from the drivetrain as opposed to the shifter.

I can move the shifter to the side slightly to reduce or eliminate the sound, but can't seem to adjust the shifter to a good position where it shifts best and eliminates the sound.

I put a louder exhaust on the vehicle and don't even notice it anymore

Gordo

gliding_serpent · gliding_serpent's Garage

Mine"knocks" for and aft in 4th under hard acceleration. Holding it eliminates it. I will look for that bolt. Brilliant thing otherwise.

Tremelune · 12-26-2015, 11:07 AM

Though these is some noise from the transmission coming through, it's not obnoxious. This seems to be the lever rattling around. I will check for that bolt as well...

gtc · gtc's Garage

http://www.wevo.com/Products/ShifterProducts/ShifterImages/WEVO_915_Shifter_INSTRUCTIONS_2009.pdf

Tightening the threaded pin (#1 in the Wevo diagram) should fix it, though it may eventually wear enough that you can't adjust out the slop.

I had the brass detent plungers wear down. This gave me a bit of side to side movement.

I bought my Wevo used, and have put a lot of miles on it since then... probably close to 200,000. It is a good idea to disassemble them periodically to clean, lube, and inspect them. If anything looks worn, Hayden has replacement parts, and is great to deal with.

wayner · 01-14-2016, 08:30 AM

I read thread about this some time ago but can't find it now.

Apparently it had to do with the minute adjustment of the shifter coupling.
A wine in fifth gear and a vibration in the shifter handle represented a minor minuscule mis-adjustment that could be cured by t fiddling with the coupler.

Mine did the same but after the last engine drop and reinstall it didn't do it anymore. If the above is true, perhaps the re-install included a more accurate adjustment of the coupler?

Tremelune · 01-14-2016, 09:44 AM

I've tightened the front pin, then pulled out a dead battery, then found there was no replacement battery available, and now the car is sitting, so I dunno if it worked.

I'm making real progress here.

javadog · 01-14-2016, 10:57 AM

If you guys are not running stock factory bushings in the coupler, you might try that.

JR

Tremelune · 01-17-2016, 12:53 PM

Tightening the front-nut seems to have helped some, but perhaps it's just that the car is louder now that I've pulled up the carpeting...I feel like if I tighten it any more the shifter won't find its way back to neutral without help. There is still a great deal of front-to-back play.

I thought the Wevo bushing was supposed to solve some problems that the stock bushing has? I'm not even sure what I have back there, but the noise is definitely coming from the shifter.

The sound goes away when I put my hand on it, and sometimes stays away for a bit when I let go.

911pcars · 01-17-2016, 01:22 PM

Does the vibration remain in 5th gear?

Sherwood

Tremelune · 01-17-2016, 01:24 PM

It does not—5th gear seems fine.

Rich Gas · 01-17-2016, 01:29 PM

What's a Wevo bushing? I think you're talking about the coupler. You don't work on your own stuff do you? Why trash Wevo, the shifter and coupler, just because you're unwilling to take the time to read diagrams or manuals. I have the coupler and it works fantastic. I replaced my stock shifter bushings, and spent a few days learning how to adjust everything.

Saying you don't even know what's back there is a cop out. You've had this car for a few years.

javadog · 01-18-2016, 04:53 AM

Nice reply there, Rich...

The reason it doesn't vibrate in 5th is because the shifter is spring loaded against the metal tab that the lever rests against while in fifth gear.

What I suggested earlier is that it's possible that vibrations from the engine and gearbox are exciting the lever and making it vibrate. One possible reason for this may be the fact that most aftermarket coupler bushings have a round hole, as opposed to a short slot. I think the slot was designed into the stock bushings to allow a small amount of fore-aft movement without moving the shift rod. This would prevent small vibrations in that plane from being passed into the rod.

Eliminating any play in the shifter assembly might help a little. That's to say, any wear in the moving parts. Reassembly with lots of thick grease may also help. Changing the mass of the lever might help. But, I suspect the coupler bushings are the cause and solution of this problem.

JR

gtc · gtc's Garage

Since it's run without a boot for an unknown distance, I would definitely pull it apart and clean and relube everything from the coupler forwards, and check all the bushings. There have been posts suggesting that even the wevo/stomski u-joints do benefit from fresh grease after a while.

Tremelune · 01-18-2016, 03:27 PM

Yep, yep. I was, of course, trying to avoid that, but since I'm taking my interior apart, I'll need to remove the shifter to get the carpet up anyway. Might as well eyeball and clean everything while I'm in there...

rtu0894 · 01-21-2016, 02:28 PM

Another boot idea...

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Tremelune · 06-08-2017, 02:14 PM

My shifter had to come out to do some interior work, and I had them put in new bushings. That seems to have solved the rattle in the shifter, though there is still a rattle in 3rd and 4th coming from the coupler or tube in the rear.

When I push/pull on the tube there's a bit of a "click". Not sure what's loose where. At least it's in a place that can be covered by sound deadening and carpet and what not...

NickP · 06-08-2017, 03:36 PM

Mine also rattles like hell in 3-4 and in 1-2 there is lots of annoying noise that transmits through the shifter which has tension on it making it rest against the center. 5 is ok, noise is minimal. Love the shift action, hate the noises. I'm waiting for the spring kit from Wevo and will experiment with some different spring tensions, maybe even remove the right side which defeats the centering action, but I hate the noise. In fairness, I'm running my Wevo without a boot which might solve the 3-4 rattle. Bushings and coupler are stock and brand spanking new.