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Showing results 1 to 25 of 65
Search took 0.01 seconds. Search: Posts Made By: MB968
Forum: Porsche 924/944/968 Technical Forum 04-05-2015, 05:03 PM
Replies: 14
Views: 1,106
Posted By MB968
I agree, not the best picture. But, it only...

I agree, not the best picture. But, it only looks like it isn't up against the shoulder due to the chamfered edge on the parts. The area where it isn't chamfered, and there isn't a shadow from the...
Forum: Porsche 924/944/968 Technical Forum 03-18-2015, 11:22 PM
Replies: 13
Views: 2,305
Posted By MB968
I didn't really have any issues getting mine off,...

I didn't really have any issues getting mine off, but I noticed some fretting corrosion on the shaft. This is essentially rust created from micro welding of the steel. Unfortunately, the iron oxide...
Forum: Porsche 924/944/968 Technical Forum 03-11-2015, 05:40 PM
Replies: 9
Views: 663
Posted By MB968
I too have the older style which does not use...

I too have the older style which does not use o-rings. Due to the small amount of motion, I'd use a high temp anti seize.

As far as the arm contacting on the c-clip, it could have been designed...
Forum: Porsche 924/944/968 Technical Forum 01-07-2015, 08:44 PM
Replies: 8
Views: 648
Posted By MB968
Welcome, and good luck getting on the track soon.

Welcome, and good luck getting on the track soon.
Forum: Porsche 924/944/968 Technical Forum 01-03-2015, 08:16 PM
Replies: 60
Views: 6,458
Posted By MB968
Sounds like making the turnbuckle could be a fun...

Sounds like making the turnbuckle could be a fun project for you, so give it a go. I work for what was once the largest machine tool company in the world. Part of my engineering training was to...
Forum: Porsche 944 Turbo and Turbo S 01-03-2015, 05:07 PM
Replies: 6
Views: 1,251
Posted By MB968
If I remember correctly Eric Krause is using a...

If I remember correctly Eric Krause is using a Spec clutch. His HP/Torque is in that range with the 951 (in a 968). He's been racing the car for many years with a 951, so his use is probably more...
Forum: Porsche 924/944/968 Technical Forum 01-03-2015, 04:58 PM
Replies: 60
Views: 6,458
Posted By MB968
Since we are on the topic, can the initial...

Since we are on the topic, can the initial preload on the spring be adjusted using the hole in the plunger end of the assembly. Looks like you may be able to run the plunger in or out by rotating...
Forum: Porsche 924/944/968 Technical Forum 01-03-2015, 04:47 PM
Replies: 60
Views: 6,458
Posted By MB968
Bradical, now that I look at the pictures for the...

Bradical, now that I look at the pictures for the spring based tensioner, I completely agree with you. Apparently a constant strain setup is OK for the normal maintenance span for this engine. So,...
Forum: Porsche 924/944/968 Technical Forum 01-03-2015, 01:54 PM
Replies: 60
Views: 6,458
Posted By MB968
Good sketch, you definitely have a talent for...

Good sketch, you definitely have a talent for communicating via 3-d drawings.

I would not use a constant strain device such as you show. Again, it will not compensate for a decrease in tension on...
Forum: Porsche 924/944/968 Technical Forum 01-02-2015, 11:04 PM
Replies: 60
Views: 6,458
Posted By MB968
Having been involved in design of mechanical...

Having been involved in design of mechanical systems, incl. those with toothed drive belts, I would never run our engines without a tensioner on the timing belt. The tensioner is on the...
Forum: Porsche 924/944/968 Technical Forum 01-02-2015, 10:47 PM
Replies: 5
Views: 849
Posted By MB968
One thing you could do is to individually check...

One thing you could do is to individually check the speed sensors at the wheels. I haven't done this on my 968, but have done it on other cars. With an old VOM, the kind with a meter with a needle...
Forum: Porsche 924/944/968 Technical Forum 10-15-2014, 08:55 PM
Replies: 5
Views: 1,887
Posted By MB968
Anti-seize is definitely recommended

Anti-seize is definitely recommended
Forum: Porsche 924/944/968 Technical Forum 10-15-2014, 08:51 PM
Replies: 8
Views: 600
Posted By MB968
Lube the od of the seal, and the id of the hole. ...

Lube the od of the seal, and the id of the hole. Make sure there isn't a sharp edge on the hole that can cut/damage the seal. A little emery cloth can be used to round the edge if it wasn't done at...
Forum: Porsche 924/944/968 Technical Forum 09-13-2014, 09:40 PM
Replies: 29
Views: 2,618
Posted By MB968
Since the bolt threads were stripped, I'd...

Since the bolt threads were stripped, I'd definitely run a tap through the coupling to clean up the threads. If you don't have a tap, try at least running bolt in by hand. If the new bolt won't...
Forum: Porsche 924/944/968 Technical Forum 08-16-2014, 05:13 PM
Replies: 10
Views: 813
Posted By MB968
Suspect a wrist pin bearing, if you don't see any...

Suspect a wrist pin bearing, if you don't see any change in oil pressure compared to before. Don't think the wrist pin has a pressure line to it, so if it goes you'd still have normal oil pressure.
Forum: Porsche 924/944/968 Technical Forum 08-07-2014, 09:32 PM
Replies: 5
Views: 485
Posted By MB968
You could check AutoZone. They loan out a lot of...

You could check AutoZone. They loan out a lot of tools for free.
Forum: Porsche 924/944/968 Technical Forum 07-25-2014, 09:09 PM
Replies: 16
Views: 2,012
Posted By MB968
I'm not sure the stopping/stroboscopic effect you...

I'm not sure the stopping/stroboscopic effect you are seeing has anything to do with the noise. If you are using a light that is plugged into either 50 or 60 cycle AC electric to look at the belt,...
Forum: Porsche 924/944/968 Technical Forum 07-25-2014, 08:51 PM
Replies: 2
Views: 699
Posted By MB968
We sold a lot of grinders to make these when they...

We sold a lot of grinders to make these when they were first designed and were called rzeppa joints. As I recall, they are held together by at least one circlip, probably two. If your's fell apart,...
Forum: Porsche 924/944/968 Technical Forum 07-22-2014, 10:25 PM
Replies: 12
Views: 1,557
Posted By MB968
The tool that I use to get out broken bolts (when...

The tool that I use to get out broken bolts (when a part of the bolt is left proud), or bolts with the head stripped is a very small pipe wrench. Pipe wrenches are designed to grip tighter onto the...
Forum: Porsche 924/944/968 Technical Forum 07-20-2014, 10:18 PM
Replies: 12
Views: 1,790
Posted By MB968
Once you get it back together, a compression test...

Once you get it back together, a compression test and or a leakdown test should tell you if the valves are OK.
Forum: Porsche 924/944/968 Technical Forum 07-13-2014, 10:59 PM
Replies: 17
Views: 952
Posted By MB968
Ok, the following is subjective base on me just...

Ok, the following is subjective base on me just looking at the pictures. But, I looked at a lot of chatter/vibration marks in machined parts during my professional career. Given that, the multiple...
Forum: Porsche 924/944/968 Technical Forum 07-07-2014, 10:16 PM
Replies: 5
Views: 488
Posted By MB968
Since assembly oil, and tire mounting paste are...

Since assembly oil, and tire mounting paste are both mentioned as an either/or, I assume that both are assembly lubes to make it easier to get the filler neck sleeves onto the filler neck. The term...
Forum: Porsche 924/944/968 Technical Forum 07-07-2014, 12:59 PM
Replies: 5
Views: 488
Posted By MB968
Are you really sure there was an adhesive used...

Are you really sure there was an adhesive used for the fuel restrictor. It is quite rare to use an adhesive in the presence of fuel, since changes to fuel such as alcohol and changes to additives,...
Forum: Porsche 924/944/968 Technical Forum 07-04-2014, 09:57 PM
Replies: 61
Views: 4,159
Posted By MB968
I can't imagine 3" being required for a N/A...

I can't imagine 3" being required for a N/A engine, unless it was a very special build for racing. Even then it may be too much.
Forum: Porsche 924/944/968 Technical Forum 06-22-2014, 06:40 PM
Replies: 7
Views: 1,931
Posted By MB968
I recently had this same issue. I was able to...

I recently had this same issue. I was able to use a flat (not Phillips) screwdriver to get the piece out. I searched through my selection of screwdrivers until I found one that just wouldn't fit...
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