Engine number missing on my 75 914 2.0 Options

[dr914@autoatlanta.com]

75 76 air pump 2.0 engine for the 49 states but should not have a vacuum advance hooke up and looks like the oil filler is the earlier one by the size of the hose

That is indeed where I checked and was expecting it, but no.

did you look down in the canyon between the oil filler and the front impeller housing?

Good morning to all of you readers.

I recently imported a 75 2.0 914. VIN and chassis numbers have been located and seem in order, however I am unable to find the engine number in its usual spot.

What could be explanations for having an engine without an engine number? When engines were replaced by VW/Porsche, would these new engines possibly have no number on them?

Thanks,
Raf (from Luxembourg/Europe)

[JeffBowlsby]

Considering all the above, looks like you started with a 75 2.0L 49-state engine, which now has a case change to an early 1.7L case, with the original hardware swapped onto it.

[Junioren]

Considering all the above, looks like you started with a 75 2.0L 49-state engine, which now has a case change to an early 1.7L case, with the original hardware swapped onto it.

Thank you Jeff for your help... on another note, when starting to take of the metal parts on the engine I noticed some bolts going into the cylinderheads (see picture). I cannot find them in the Porsche parts catalog and I am unsure of their purpose. Anyone know? Are these merely to hang the engine whilst works are done? Or do they serve a purpose?

[JeffBowlsby]

Those are capped off air injectors, supplied by your also missing air pump and its piping. All 75 2.0s would originally have that system. Emissions.

[rjames]

What's with the plugged adapter? Looks like it's coming off of the advance port on the TB... but I thought that the later throttle body's didn't have an advance port. My '75 2.0 didn't.

[emerygt350]

We need to see the ports on the plenum. Looks like a real mix of pieces. TB from a 73 or really early 74 2.0. The ports on plenum will tell us if that is 73 as well. That thing you circled looks like an O2 sensor!

[wonkipop]

What's with the plugged adapter? Looks like it's coming off of the advance port on the TB... but I thought that the later throttle body's didn't have an advance port. My '75 2.0 didn't.

well spotted.

i don't know too much about the 2.0 L cars.
but there was a difference between the calif spec and 49 states.
calif had EGR but 49 states did not.

and calif def had EGR vacuum initiated off "advance" port on TB.



from what i have seen it was the 49 state 75 2.0L that did not have an "advance" port on TB.

neither version used timing advance from advance can on distributor.
only retard side. ( but @JeffBowlsby will correct me if i am wrong).

i am more familiar with the 1.8s.
contrary to myth the 1.8s did not divide purely on model years when it came to the set up for advance and retard of timing and whether or not the TB had both an advance and retard port.
the 74 49 state 1.8 had advance and retard ports on TB and used both coupled up to the advance and retard sides of the can on the distributor.
the 74 calif 1.8 only had a retard port on TB and only hooked up the retard can on dist.
the 75 49 state 1.8 was as per 74 californian.
75 californian used the 74 49 states TB with both ports but hooked up the advance port on the TB to the EGR.

from what i can glean about 75 2.0s its a similar scenario.
advance port on TB hooks up to EGR on californian.
no advance port on TB for 49 state cars which don't have EGR.

not sure if californian 75 2.0 had the air pump and air injection either.
instead had cat and EGR. but not 100% sure. tech book that jeff bowlsy has on his website which i have looked at for the 1.8s has the 2.0 info in it.
seems to say they did with EGR and cat additional.
cars that exist today of course have mostly got all this stuff missing.



its got the correct air cleaner for a 75.
has the connection plate for EGR.
which is blanked off in this case. as it should be for a 75 49 states.
and in other photos you can see it has the smog pump pulley on the fan.
seems to be in accord with the emissions sticker on fan casting and stencil stamp on tin saying its a 75 49 state.

but you and emory are right about the throttle body.
from what i can tell it should not have an advance port opened up.
either a 73/74 T/B or a 75 calif T/B?

[wonkipop]

What's with the plugged adapter? Looks like it's coming off of the advance port on the TB... but I thought that the later throttle body's didn't have an advance port. My '75 2.0 didn't.

i missed the doctors post at top of page.
he would know re TBs on these cars.

[Junioren]

Thanks for all your help on previous questions.

I have opened the valve covers of the cylinder heads to see the ref number on them (still trying to find out if I am now running a 1.7 (as the engine number indicates) or a 2.0 (what I thought it was originally).

The cylinder head ref reads 039 101 371 A (I think a 2.0 cyl head).

Would I need to dig deeper to know whether the engine is in fact a 1.7 turned 2.0 or still a 1.7?

Any suggestions on how I could find the answer to that?

Thanks

[Shivers]

Thanks for all your help on previous questions.

I have opened the valve covers of the cylinder heads to see the ref number on them (still trying to find out if I am now running a 1.7 (as the engine number indicates) or a 2.0 (what I thought it was originally).

The cylinder head ref reads 039 101 371 A (I think a 2.0 cyl head).

Would I need to dig deeper to know whether the engine is in fact a 1.7 turned 2.0 or still a 1.7?

Any suggestions on how I could find the answer to that?

Thanks

The 1.7 and the 2.0 have a different stroke. Maybe you can measure that to get your answer.

[emerygt350]

And unless it is a bus 2.0 the intakes on the Porsche 2.0 has 3 bolts. 1.7 has 4. Your spark plugs are in the 2.0 position though, so you certainly don't have 1.7 heads. Not sure if the exhaust on the bus went out the sides or down like the 914.

[Dave_Darling]

All of the Type IV motors have bottom-side exhaust ports. That's one of the things that makes them a Type IV motor. The pre-72 Buses that have exhaust ports on the front and rear sides of the head have Type I style motors, not Type IV.

The plug angle already says these are 2-liter 914 heads. It is possible but very unlikely for someone to use those heads on a smaller-displacement motor. You're probably OK to assume the engine is a 2.0 one. If you really want to be sure, you can find someone to "pump the engine" and measure the air flowing into or out of the engine through a complete combustion cycle. But I wouldn't bother, myself.

--DD

[emerygt350]

I bet if they went through the trouble of a new case they probably used the old sleaves and pistons or maybe even upgraded. Can't imagine keeping the 1.7 setup if you are going that far.