Porsche 928 OIL, TORQUE TUBE and THRUST BEARING. Critical stuff!
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- เผยแพร่เมื่อ 4 ก.พ. 2023
- Essential viewing for Porsche 928 owners. When it comes to looking after your 928, there are some crucial things that need to be checked that are sometimes overlooked. Bruce and Sean at Buchanan Automotive are concerned with one thing - keeping these old cars alive and preventing them from needless demise. So let's talk about these critical subjects - oil, the thrust bearing and some basic torque tube mainteance that is often overlooked.
Lots more 928-specific content coming. Please stay tuned to the channel if you love your water-cooled transaxle Porsches.
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Love listening to people who know what they are talking about. Another excellent video!
Bruce can scare the pants off you with his Porsche transaxle tales but it’s comforting to know that if he or Sean work on your car, it’ll be fixed or serviced properly. Both my 928 and 944 have been transformed after visiting Buchanan Automotive.👍👍👍
Never, ever, had a short discussion with Bruce. It’s ridiculous how much he knows about the 928. Ask Bruce about the King Tiger story…. And I’m pretty sure that red ‘87 S4 he was talking about was mine (he’ll remember navy Stu). I think I paid for Sean’s whole apprenticeship back in the early 2000s!😂
I always appreciated reading Bruce & Seans general and tech posts on the old Landsharkoz site. Shame that disappeared. Have always done the front and rear bolt replacement following their advice.
Great to see the person behind the voice that is Bruce. Re-build an engine on a 928 $30,000 , put it back in a car worth $30,000. There is a bit of a problem right there.
more like $20k plus if its in good condition. The finished motor is like brand new plus all the bits like hoses etc are done. Better than new Id say. In Oz they were $200,000 cars in the 80's
On my old 928 GTS I never looked or new about that rear T/tube bolt, interesting thanks
Sean and Bruce are great! I live in Sweden but even so I have gotten great help from them especially with 951 and 968 Turbo cars.
Few know as much as them about Porsches transaxle cars 👏
I don’t have any desire to own a 928 but found this video fascinating and enjoyable. Thanks Stu, keep them coming and feel free to mix it up with driving and other topics of interest
LOL @ the great 928 Oil Debate . Geez 🤣🐍🐍🐍🐍🛢🛢🛢🛢🚽🚽🚽🚽
Bruce and Sean kept my ‘90GT looked after for the 16 years and around 300k km that I put on it.
They rebuilt the engine at 360k km to fix oil leaks and as they mentioned in your vid, everything was still perfect. Eventually I sold the car to another enthusiast who actually drives it at 424k km.
A great car. Looking forward to going on a drive with you.
Absolutely. We'll get the injectors and air-con fixed first. And the fuel hoses. And the P/S hose. And the timing belt and water pump. And new rubber to replace the rock hard rubbish. And ... hmm. This coudl take a while.
Thank you for putting this video up. I’ve been the caretaker of an ‘83 S for a quarter of its life and very much appreciate new insights on proper maintenance as no one wrenches on my car but me. Other research pointed to 20/50 oil with high ZDDP. In the States this means Valvoline VR-1 racing oil.
Thanks for the data on torque tube care, I can put it to good use!
You're welcome Jason. I thought an encyclopedic resource like the Buchanans needed to be shared. More 928 content coming too, as work gets done on my car.
I own a 91 928gt with 43,000 miles. I have noticed to the noise they describe and couldn't figure out what it was. Now I'm a bit nervous because I've run the lighter vis oil in it since I bought it. I'm sure the rear bolt and coupling need attention. So it will be going in the shop for the torque tube and check thrust bearing wear.
Thank goodness I came across this video.
CHECKED THE FRONT MANY TIMES...never the rear...i will now...88.S4..
Don’t just check the rear, replace the bolt regularly. It stretches. The bolt is cheap maintenance.
@@markedwards4879 ok ''champ'' will do..🙄
@@darrennic2565 having had to replace the input shaft and torque tube driveshaft on my ‘90 GT because the previous owner hadn’t replaced the bolt, Bruce and Sean replaced the bolt regularly when servicing my car. FWIW I owned the GT for 16 years and put around 300,000km on it. But hey, go ahead and ignore my (and Bruce’s) advice if you want. It’s your car and your money.
I love listening to you two!
It’s fascinating returning to the past!
I've been trying to watch all your episodes with bruce very interesting
Absolutely wonderful in depth info! LOVE the Porsche content!
Glad I discovered your channel. Fixing up a 928 myself this info is gold.
Awesome video
Thanks for posting 👍👍
I LOVE THIS GUY!!!
Very informative video. I’d love to see some extra content on 944s and 968s too.
How fascinating! My 87S4 has been sitting for several years (in Canada) while I hoped to eventually figure out my torque tube issues. After replacing the clutch, problems started occurring one after another. This video has finally put some light on possible causes. If only I could have it magically shipped to your side of the globe. Keep up the great videos, I have much back-viewing to do.
Great video and info! Thanks for this! Checking the the driveshaft flex plate pinchbolt is on my list of things to do, but never considered the rear end of it.
Those guys are really good......thank you...
I have a 1991gt with 43,000 miles on the clock. I've owned the car since 2017. I've had it serviced at Porsche dealer and an independent shop that specializes in Porsche. Neither shop has mentioned anything about torque tube maintenence. Since I've owned it, I have noticed a strange noBBK se that I could never pinpoint. I think I have my answer! I just happened across your video/podcast. I have put less than 3000 miles on it. I plan on taking it in in the next couple weeks to have the end play measured. You provide a valuable service doing what you do.
Tom from St. Louis
PS, my first career was that of a ASE certified service technician. I worked for a Porsche audi dealership from 1983 to 1988. It was a great job. I left to go into sales. I worked for an oil manufacturer /compound blender.
Thanks
Curious, which grade of oil are you using and is it natural or synthetic or a mix of the two?
The Thrust Bearing issue never seemed to be an issue with the 3 speed trans , but they had a different arrangement at the flex plate to that of the 4 speed slush box .
The 3-speed is a really hardy and well-built box. I prefer the characteristics of the 3 over the 4 in the 928 and the construction is a big bonus. Proper old school V8 just works with an old 3-speed auto.
Indeed. As Bruce points out in our most recent video, the different clamp arrangement at the rear of the 3-speed was more sturdy. Although as you'll see on my 3-speed, the flex plate was still being pushed forward, but still well within tolerance.
@@inCARnationAustralia plus Porsche omitted the circlip at the front of the TT for the 4 speed
I've been sending my 968 CS to Hamilton's but it was serviced by Bruce in another life. I really need to pay Bruce a visit. What a man of knowledge on these transaxle cars.
Excellent video and so satisfying listening to a true expert on our beloved transaxle cars. I wonder if the same goes for the 944 and 968 torque tube maintenance?
I use 20/60 - perfect good aussie oil
thanks guys, I bought a 82 928 project car with 175k. The engine had been dismantled for a reseal, but it was amazing how good everything looked. Looking forward to putting it back together.
This is wonderful! When I got my '93 GTS, the flex plate was bowed in badly and was replaced. The mechanic made no mention of the rear coupling slipping but rather insisted I get a more robust front coupling from Black Sea Super clamp which I've has for 17 years. The tolerance for the thrust bearing is still in spec.
What I'd like to hear more about is how to reduce the high oil consumption (~ 1l/400 km). I've tried many things and none have worked. I tried a Greg Brown Precision Moterwerks breather system with a Provent filter which worked for a short while and then failed. I am currently using a vacuum system with a 2-stage catch can that drains back to the crank case and that was a small improvement but now is not working.
I think the only cure for the long stroke GTS motor is a windage tray, oil pan spacer and to drill oil relief holes on the pistons. Strangely Porsche never drilled out the oil drain holes on the pistons. Any information ore suggestions would be greatly appreciated.
All the best from Horseshoe Bay,
Joe
Hi Joe, I'd suggest giving Bruce a call during office hours (AEST). But get yourself a coffee first and a comfy chair. Buchanan Automotive in Cromer, Sydney.
@@inCARnationAustralia Thanks for the suggestion. I'm based in Vancouver BC (PST) so perhaps I can get Bruce's input via phone and see if I can find a shop to take next steps. Really love the car but am close to selling it as I don't drive it very much. If i could sort the oil consumption issue I'd be very happy and would keep the car for my kids. , Joe
@@inCARnationAustralia Do you have a WhatsApp account? Better than an international call!
Great stuff! An expert like Bruce is invaluable. I’d like to know how many thousands of hours he’s spent looking the sky and pondering the wonders of the 928.
Actually I've noticed that. He does often look wistfully at the sky, frowning and scratching his chin. It's a trademark Bruce look.
Grand Poobah indeed!
I run M1 15w50 on my 968, it also has high ZDDP.
Bruce is fantastic.
He certainly expresses his opinions forcefully
Me: follow the owners manual...
Then again I own a 21 Challenger Scat Pack and I have to run Penzoil 0W-40 lol, changed every 10,000kms... and I daily drive it. Funt times in Ontario Canada. Ah well, only had one myself a 91 GT, but I couldn't compete with someone wanting that AND 2 early 911 turbos... nice vid, maybe one day i'll find one that's ACTUALLY driven...
Oops another make you paranoid 928 video. My manual 86 5.0 928 has close to 200,000 miles. With a 20 year old EPDM timing belt replaced in 2003 and torque tube has never been checked.I have been using 20w-50 in San Diego California average temperature of 70. Fahrenheitِ
This is great if you live in Aus, but what about people who live in colder countries where the oil spends a lot of time a lot thicker?
Fantastic information!! I’ve owned my 86.5 five speed for twenty five years. Has 200K on it and still runs great! I’m wondering if the issue you talk about in this video has something to do with a strange noise that I’ve heard for years on clutch engagement? It’s almost a grinding type noise that I’ve always thought was coming from where the spline fits into the transmission. We put the special, fatter torque tube bearings in that are suppose to stop them from migrating. I figured that would surely stop that noise but it didn’t? The one thing I’ve not serviced on this car is the tranny. It would certainly be interesting to see if that coupler where the spline goes into the tranny has been affected. I’m going to send this video to my 928 mechanic, who is quite good, as it looks as if there some great info here that he doesn’t know about! 5-40 synthetic is the oil he has always recommended. This is just another example that you can always learn something new!
Sintetico no, siempre mineral.
RTFM. It's all in the owners manual. Bruce will also tell you this LOL.
unloosen means tighten.
What if you switched to a titanium bolt?
I'll leave that one to Bruce to answer. Sounds sensible. I suspect he'll say that the factory part is high quality and quite adequate as long as people don't expect them to last 20, 30, 40 years, unchecked. Just one of those things that people need to know about and put on their list to check/replace every couple of years. Could there possibly be issues with the different expansion rates of dissimilar metals? I don't know.
Why would you? Only advantage of Ti would be lighter weight and I doubt that's going to make any difference.😀
Read The Fabulous Manual 🤣
Ah thanks. Always wondered about that "F"
Mobil 1 it is then 😉
Stirrer! BB went to some effort not to mention brands 😉
@@inCARnationAustralia Me Stu , no way . lol (Nick)
@@Island_Times bah, I think he likes the V brand, I use Penrite! Its not rocket science
Oils aint oils Sol!
In this case, trust the science. Showing the two teeth marks aligned to the spline moving forward is CASE CLOSED data.
This isn't some fantasy in some motorhead's beer fueled madness as he brags about his chevy orange.