Motor tear down Options

[lsintampa]

75 914/4 2.0 d-jet

Boring story, but it looks like I need to get into my motor. The motor came with the car and was nice and clean. All parts that could be powder coated were, it was like new looking. It also had valves re-adjusted, leak tested (OK), and internal probes showed it to be very clean (info from PO).

It sat on my garage floor for 5 months while I tended to the car's other needs. I did drop some oil into each cylinder before I put the plugs in. But the fuel feeder tubes and inlet ports were wide open for a while. But plugged with rags (noted).

Anyway now that I'm finally getting around to trying to start it, the motor is all but seized up. It turns, but it is really hard to move and when it does, it sounds raspy like it's grinding something or scraping something. Hard to explain but it don't sound good.

So, I'm starting all over and I'm going to drop that motor back out and get into it. It is the ONLY way that I will know for sure what I'm dealing with.

Thanks for everyone that's helped along the way. I'm sure once I get into this motor, I'll be looking for help once again.

(IMG:style_emoticons/default/headbang.gif)

[lsintampa]

So wife's surgery was delayed until further notice. It's complicated.

Anyway, dropped the motor this morning and I don't know if I should start at the front or back first?

Picture is of the front. I pulled those three bolts to see what they looked like on the ends and they look fine.

SO, I'm thinking to start in the back by pulling tranny.

Will do that after lunch.

But tell me if those three bolts that hold the cooling fan on look OK on the ends, is it safe to assume the front isn't where I should be looking.

Mindful the flywheel was new according to the PO - so me thinks the back is where the issue may show up.

Thanks,

Len

[Bartlett 914]

So wife's surgery was delayed until further notice. It's complicated.

Anyway, dropped the motor this morning and I don't know if I should start at the front or back first?

Picture is of the front. I pulled those three bolts to see what they looked like on the ends and they look fine.

SO, I'm thinking to start in the back by pulling tranny.

Will do that after lunch.

But tell me if those three bolts that hold the cooling fan on look OK on the ends, is it safe to assume the front isn't where I should be looking.

Mindful the flywheel was new according to the PO - so me thinks the back is where the issue may show up.

Thanks,

Len

Take the pulley off! Make sure there is a washer (spacer) behind it!

[ThePaintedMan]

Take the pulley off! Make sure there is a washer (spacer) behind it!

(IMG:style_emoticons/default/agree.gif) You'll have to tug on it from different angles, but the fan (impeller) should pop right off. Check to make sure there is that spacer I told you about (consult the Porsche PET diagram if in doubt) behind it.


If nothing is obvious there, here is what I would do:

Move to the transmission to ensure its not an obvious clutch/flywheel problem - only four nuts to remove to do this.

If still nothing is apparent, I'd move back to the front and remove the fan shroud. Again four nuts behind the impeller holding that on. Then remove the single bolt holding the fan hub onto the crank and remove the hub. At that point you would be able to see the front main seal and verify that the fan bolts (which may have been too long because they were used with the a/c adapter that was on the car originally) did not interfere with the seal/case.

If THAT isn't it, move back to the transmission end and remove the flywheel to check for some kind of interference there.

Finally, if no other problems present themselves, move back to the front of the motor and remove the oil pump. It's possible that a Type I oil pump could have been installed and not modified correctly and that has been known to interfere with the cam bolts. If this is the case, you'll probably end up getting rid of this motor, as you and I discussed you don't want to do any internal work with it.