914 -engine sizes- fit/wont fit???, Technical HELLLlpPPP Options

[Boldylocks]

First, I'm the owner of a 73 914 with a 1.7 liter engine that has bent/broken intake valves. I'm not a mechanic, but the cost to repair this part seems to be as much, if not more, than finding a running engine and putting it into the car.
With that said:

Can I 'drop' any 914 engine into the car??? 1.8 -2.0??

Is the mechanic correct, will it cost me nearly the same amount to simply find (FAR FROM SIMPLE) a running engine and have it put in the car???

Can I 'drop' any of the larger engines into the car without any problems???

___ next level questions_____

Anyone with any ideas of the causes for a 'big bore' engine to RUN HOT . there is no thermostat connected to the engine and after about an hour of running it starts heading into the red zone.

-for direct contact: Rfranklin@price-entities.com -during the day (pacific time), Riccif@cts.com -at night.

I would really really appreciate anyones help/response. I'm always greatful to this board and point eveyone I know in its direction. My current 914 was purchase after many hours of discussion on this board and it is a gem. The ENGINE was damaged due to mandatory driving on the face of the MOON in order to get to work for nearly 3 months (streets on my way to work -were pothole infested- caused serious damage to exhaust/engine -though again, according to what I have learned I simply have an 'intake valve -bent/broken' issue).

[Boldylocks]

Brass Tacks Time for sure: here is a quote from the guy who has the big bore 103mm engine: "the motor does not have a thermostat. However, the flap on the 3/4 cylinder side is wired in the open position, so air is hitting the oil cooler. There is no flap on the 1/2 side. The oil seems to be mostly from the 1/2 side. Push rod tube seals, maybe, or could be poor seat of cylinder to head or case since there are no gaskets. I just don't know."

He also says "the ingine is a 1.8 liter case that has been machined to accomodate a 103mm big bore kit(103mm cylinders and pistons). 2.0 liter heads also machined. Heads were recently rebuilt and #3 valve replaced. The bad news is that it runs very hot and leaks a lot of oil! It is also loud and has poor gas milage. Comes with Weber carb setup. Carbs are made in Spain, model 40 IDF 70 M7. Carbs were recently rebuilt. Slightly larger than stock Elgin cam (266 duration 108 lobe ceenters, standard valve clearence)."

SO, here is the story, I'm very intersested in this engine because, so far, its the only 'running' engine I have come accross. My biggest problem is the problems that could lead to this heat issue. Running lean doesnt seem to be the biggest of problems. As I mention, I'm only taking the car for a stroll to work in the mornings and evenings home -less than 20 miles a day - which gives me time to work on 'lean' -BUT..
If there are deeper more bizzare reasons for a HOT engine - then I've got to keep looking.

NOTE: Pelican's BBS -while a nice place to visit -had a listing for an engine that was posted in October 1999 - and it was still being contacted which meant it was 'high' on the list of current discussions. - I like the Bird, but give me 914club or rennlist anytime.

-so, again, to all 914s out there - am I getting into trouble with a car that already RUNS hot -or are these usually issues that can be repaired ??
the engine I am dropping has a legitamate PROB -it will not idle, it has a MAJOR intake problem that -as discussed above- will result in 'head' removal and other issues that mechanics love to charge small boat prices for. I'm not looking to finance my Mechy's boat.
I would prefer to give a 914 upgrader some cash for a 'lessor' yet fun all the same, 4-cyl.

Keep it coming, I'm downstream LEARNING.