Is this a torque tube issue?
04-07-2018, 01:19 PM
#1
Rennlist Member
Thread Starter
Is this a torque tube issue?
Hi All -
New 944 turbo owner. I just picked up an ‘86 951. The test drive went well and after purchase I drove it 210 miles home. At the price asked, I was fully prepared to have to do some work on it. That’s fine... it will make the car “mine.”
On the drive home, I noticed a fairly high frequency sound when I had my foot on the accelerator (just maintaining speed... I don’t have to be accelerating). Not unlike a quiet version of the sound tires make when you run over the warning grooves on the side of the road. It seems to come in from the gearshift. I can feel a slight vibration there when the sound is present.
It goes away when I lift my foot off the gas or push in the clutch. From what I’ve read it seems like this may be a torque tube issue?
Any thoughts would be hugely appreciated. Thanks,
New 944 turbo owner. I just picked up an ‘86 951. The test drive went well and after purchase I drove it 210 miles home. At the price asked, I was fully prepared to have to do some work on it. That’s fine... it will make the car “mine.”
On the drive home, I noticed a fairly high frequency sound when I had my foot on the accelerator (just maintaining speed... I don’t have to be accelerating). Not unlike a quiet version of the sound tires make when you run over the warning grooves on the side of the road. It seems to come in from the gearshift. I can feel a slight vibration there when the sound is present.
It goes away when I lift my foot off the gas or push in the clutch. From what I’ve read it seems like this may be a torque tube issue?
Any thoughts would be hugely appreciated. Thanks,
04-08-2018, 10:42 AM
#2
Rennlist Member
Sounds like a ring and pinion issue more than a TT issue for openers..Check the fluid level in the transaxle...These cars have a reputation for eating R&P's..hope that's not the case..sounds more like a "lash"/wear issue. Has this car ever been raced or tracked? If you decide to drain the Transaxle and change the fluid, check/ (strain through an old tee shirt) the drained fluid with a magnet..If you find lotsa flakes and chunks of steel, it's time for a look-see as to whats going on in there.
04-08-2018, 10:20 PM
#4
Rennlist Member
Thread Starter
Appreciate the input! Thanks.
Don’t think it’s been tracked. I’ll drain the fluid and check for metal.
Looks like a really expensive part if that’s what it is...
Don’t think it’s been tracked. I’ll drain the fluid and check for metal.
Looks like a really expensive part if that’s what it is...
Last edited by Millermatic; 04-08-2018 at 10:35 PM.
04-09-2018, 10:34 AM
#5
Rainman
Rennlist Member
Rennlist Member
you can DIY the bearing replacement for about $100 but its a lot of work.
or you can pay a number of folks about $500 to do it for you.
or, you can pay about $1000 to have Black Sea R&D rebuild it with their apocalypse-proof "super bearings".
or you can pay a number of folks about $500 to do it for you.
or, you can pay about $1000 to have Black Sea R&D rebuild it with their apocalypse-proof "super bearings".
04-09-2018, 10:47 AM
#6
Rennlist Member
There are quite a lot of threads on here about which transaxle lube to use..From what i've read here, it seems that the consensus is Redline brand...I'm sure others have their favorite as well..Sounds like a good place to start. Maybe a fluid change will be all that's required. fingers crossed for you..
04-09-2018, 02:03 PM
#7
Rennlist Member
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04-09-2018, 02:21 PM
#8
Rennlist Member
Thread Starter
I’m OK with the work. The car also came with an extra engine that I plan on rebuilding over time.
Half the apeal is working on it to learn about it. It’s a 32-year-old car with a history. Working on it will help make it “mine.” I have only a vague idea of what I’m getting myself into... but it was the same when I started gutting and renovating my 100-year-old house. It took three times longer than I thought... but I made it through. So did my marriage. And now the house is “mine.”
Thanks for the input.
Half the apeal is working on it to learn about it. It’s a 32-year-old car with a history. Working on it will help make it “mine.” I have only a vague idea of what I’m getting myself into... but it was the same when I started gutting and renovating my 100-year-old house. It took three times longer than I thought... but I made it through. So did my marriage. And now the house is “mine.”
Thanks for the input.
04-09-2018, 02:23 PM
#9
Rennlist Member
Thread Starter
Just ordered a gallon of Redline. So it was good to see your post. Thanks.
04-09-2018, 05:08 PM
#10
I’m OK with the work. The car also came with an extra engine that I plan on rebuilding over time.
Half the apeal is working on it to learn about it. It’s a 32-year-old car with a history. Working on it will help make it “mine.” I have only a vague idea of what I’m getting myself into... but it was the same when I started gutting and renovating my 100-year-old house. It took three times longer than I thought... but I made it through. So did my marriage. And now the house is “mine.”
Thanks for the input.
Half the apeal is working on it to learn about it. It’s a 32-year-old car with a history. Working on it will help make it “mine.” I have only a vague idea of what I’m getting myself into... but it was the same when I started gutting and renovating my 100-year-old house. It took three times longer than I thought... but I made it through. So did my marriage. And now the house is “mine.”
Thanks for the input.
04-10-2018, 02:41 PM
#12
Rennlist Member
Thread Starter
Thanks, all.
I’ll start with checking and changing the transaxle fluid and checking out the motor mounts this weekend. The previous owner threw in some extra engine mounts along with the extra engine. While I tried to dig around underneath before I purchased it... I haven’t had a chance to get it off the ground.
I’ll move on from there if things don’t improve.
In the “for what it’s worth” department... the car has a new clutch, new shocks and new tires. It shifts well and the engine runs well. It does have some rattles that will take a while to track down... but the first “major” thing on my list is gutting and re-doing the interior... so I’ll see what I can track down. I’m planning on adding a layer of butyl sound deadener.
I’ll start with checking and changing the transaxle fluid and checking out the motor mounts this weekend. The previous owner threw in some extra engine mounts along with the extra engine. While I tried to dig around underneath before I purchased it... I haven’t had a chance to get it off the ground.
I’ll move on from there if things don’t improve.
In the “for what it’s worth” department... the car has a new clutch, new shocks and new tires. It shifts well and the engine runs well. It does have some rattles that will take a while to track down... but the first “major” thing on my list is gutting and re-doing the interior... so I’ll see what I can track down. I’m planning on adding a layer of butyl sound deadener.
04-12-2018, 01:38 AM
#13
Rennlist Member
Check out Kool-Tech and save the weight. If you want to do the TT bearings..save yourself a LOT of grief and hassle ... just order the bearings from Dimi at BlackSea..The extra cost is well worth the hassle...don't ask me how I know...I went the other way...still ran about 200.00 for the special bearings and the inserts...not to mention the pop riveter mods that had to be done and all the time involved. There are some threads with a video or two about changing these, lurking somewhere here on Rennlist..
04-12-2018, 03:16 PM
#14
Racer
I second the above comment. I just finished installing the Black Sea super bearings and the kit is well worth the money. Installation went perfectly. The most difficult part odf this job (for me) was extracting the old bearings.
04-12-2018, 10:05 PM
#15
Rennlist Member
Correction to my above post..The guy at BlackSea is Constatine..super nice guy..Dimi works at Flyinghorse Inc..another very nice and helpful guy. Sorry about the mixup!