944 Restoration Progress January 5th - July 30th

[gruhsy]

Nice job.

If you pull the mirrors off these are the proper tools.

I cringe when I see people cut the wires.

These slide inside of the wire connector and the wires pop right out.

Takes less than 10 seconds to get them out without any damage to the wires and pins.

[Tom]

Hi Guys,
Sorry if I'm intruding, but can I get help in sorting out an issue here. I've all the belts and accessible seals replaced in the last few weeks. But when all was put back and started the car, the timing belt is slapping to the rear timing cover, a bit violently.

Could this be because the timing belt is too loose? Or did I miss something else?
Please assist.

VID-20230816-WA0006.zip Couldn't add the video file directly here, hence zipping.

Looks loose. You previously said you modified the 3D printed tension tool 'a bit drastically' to fit the S motor. My guess is the modifications threw off its readings -- that does look way too loose and shouldn't be hitting the cover like that. If you show a pic of your modifications to the tool, I might be able to put my finger on the issue. It's dependent on that pivot point boss to work right. Any changes to how/where it rotates would need to be checked/calibrated against the factory tool.

Hey @Tom,

Please have a look at the tensioner check tool. Even though it is modified I don't think its features are affected. It's all the same. And sorry for the extra big screws.

As you see, the modification is limited to creating space for the extra support on the cam rear cover to not block the tool movement and adding a plastic sleeve for the M6 long bolt to let the tool freely spin. So that its still centered and does not change the calibration.

Is it possible for you to re-design the tool for 944S/S2 models?
img1243.jpeg
img1242.jpeg

I give you credit for creativity! I'd be happy to design an S version, but I'd need a motor handy to calibrate the tool. I don't know if the 16v geometry is all the same as the 8 valve motors, and have never tried to check the tool against the factory 9201 on a 16v motor. So before ever getting to your modifications, I honestly don't know if the tool would give a correct reading on those motors. As for your mods, it's pretty hard to say just looking at it if they affects the readings. There's not a lot of room for error and the tool is set up for one specific circumstance. Does the small pivot bolt transfer some of the resistance from the outside of the boss to the center? If the cut away portion affecting how much the belt is held back by the boss? Pretty much no way to know without comparing results with a factory tool (as I did on the 8v). On a practical level, however, you might try redoing it using the spring tensioner on the car. Let the tensioner tighten the belt, then give it a slight bump tighter, and in most cases you will be pretty close to spec.

Just realized this is in Jacquiles retro thread. Probably best to start a new thread re the tool if you want to discuss further, so we don't hijack a very cool restoration thread. I can move these posts to the new thread if you start one.

[SE_944ER]

Looks loose. You previously said you modified the 3D printed tension tool 'a bit drastically' to fit the S motor. My guess is the modifications threw off its readings -- that does look way too loose and shouldn't be hitting the cover like that. If you show a pic of your modifications to the tool, I might be able to put my finger on the issue. It's dependent on that pivot point boss to work right. Any changes to how/where it rotates would need to be checked/calibrated against the factory tool.

Hey @Tom,

Please have a look at the tensioner check tool. Even though it is modified I don't think its features are affected. It's all the same. And sorry for the extra big screws.

As you see, the modification is limited to creating space for the extra support on the cam rear cover to not block the tool movement and adding a plastic sleeve for the M6 long bolt to let the tool freely spin. So that its still centered and does not change the calibration.

Is it possible for you to re-design the tool for 944S/S2 models?
img1243.jpeg
img1242.jpeg

I give you credit for creativity! I'd be happy to design an S version, but I'd need a motor handy to calibrate the tool. I don't know if the 16v geometry is all the same as the 8 valve motors, and have never tried to check the tool against the factory 9201 on a 16v motor. So before ever getting to your modifications, I honestly don't know if the tool would give a correct reading on those motors. As for your mods, it's pretty hard to say just looking at it if they affects the readings. There's not a lot of room for error and the tool is set up for one specific circumstance. Does the small pivot bolt transfer some of the resistance from the outside of the boss to the center? If the cut away portion affecting how much the belt is held back by the boss? Pretty much no way to know without comparing results with a factory tool (as I did on the 8v). On a practical level, however, you might try redoing it using the spring tensioner on the car. Let the tensioner tighten the belt, then give it a slight bump tighter, and in most cases you will be pretty close to spec.

Just realized this is in Jacquiles retro thread. Probably best to start a new thread re the tool if you want to discuss further, so we don't hijack a very cool restoration thread. I can move these posts to the new thread if you start one.

Hi Tom,
Added a new thread for 16V tensioning tool: viewtopic.php?t=2144

[rb83944]

That's a ton of work. Very impressive. Congrats on the progress. When I graduated High School in 1984, I didn't even know what a Porsche was! Hang in there. They really are fun cars.