Type 4 mechanical compression ratio, Why is the factory compression so low? Options

[Beebo Kanelle]

OK, here's a fun one for the novice to ponder and you experts to answer:

Why is the factory mechanical CR so low?

and for reference, what is the highest mechanical CR that can be physically achieved? assume no octane limitations -

I'm just looking for the design limit for the highest CR that can be / has been in a Type 4 engine using available technology.

Thanks

[veekry9]

https://www.youtube.com/watch?v=vmkKqVc2g0s

http://www.forestcitycastings.com/services-molds.php
https://www.youtube.com/watch?v=OLAqtLWd3HI
http://dacedace.com/graphite-mold-castings.php
https://www.youtube.com/watch?v=RiPQpiE4_qY
https://www.youtube.com/watch?v=BnDh1a0q_GI
https://www.youtube.com/watch?v=Dw6cs7opvzA
http://www.agile-manufacturing.com/

Design brief:
1) air/liquid cooled hybrid
2) 3 valve
3) uses production valves.
4) meehanite-ex/bronze-int valve guides
5) pushrod activated roller tipped,rollercam
6) T4 headbolt pattern
7) canted valves
8) induction hardened seats
9) direct injection
10) dual plug

All of these details are desirable,but the pertinent question is,how many can you sell?
There are plenty of great stories of attempts and failures.
The impetus is improving on what came before,in some incremental way.

https://www.onshape.com/
https://www.tinkercad.com/

Make a cloud cad file,3d print the prototype,analyze the result,improve,cast the part,
machine 5X,assemble,prep,install,run.
All for <2K profit each set.
Hard to do isn't it?

https://www.google.ca/search?q=custom+vw+t1...wavNTQY-geuM%3A

/
http://www.apfelbeck.nl/
/
Reading through the comment sections.
However well you do making a great product or service,there will always be the naysayers.
Can't,won't,shouldn't and didn't are the words they use.
Read a book?Hell no,I can't,won't,shouldn't,didn't.
Pat them on their head in sympathy and
Send them on their way with a lollipop.
Sadly,they may procreate,great,more halfwits.
The effort they expend in negging other's labour and thought might better be used in an attempt at raising their own iq.

/

[Mueller]

Design brief:
1) air/liquid cooled hybrid
2) 3 valve
3) uses production valves.
4) meehanite-ex/bronze-int valve guides
5) pushrod activated roller tipped,rollercam
6) T4 headbolt pattern
7) canted valves
8) induction hardened seats
9) direct injection
10) dual plug

All of these details are desirable,but the pertinent question is,how many can you sell?
There are plenty of great stories of attempts and failures.
The impetus is improving on what came before,in some incremental way.

https://www.onshape.com/
https://www.tinkercad.com/

Make a cloud cad file,3d print the prototype,analyze the result,improve,cast the part,
machine 5X,assemble,prep,install,run.
All for <2K profit each set.
Hard to do isn't it?

https://www.google.ca/search?q=custom+vw+t1...wavNTQY-geuM%3A

/
http://www.apfelbeck.nl/
/
Reading through the comment sections.
However well you do making a great product or service,there will always be the naysayers.
Can't,won't,shouldn't and didn't are the words they use.
Read a book?Hell no,I can't,won't,shouldn't,didn't.
Pat them on their head in sympathy and
Send them on their way with a lollipop.
Sadly,they may procreate,great,more halfwits.
The effort they expend in negging other's labour and thought might better be used in an attempt at raising their own iq.

/

Maybe I missed it, but I didn't see him post about developing parts or engines for sale or profit. (IMG:style_emoticons/default/smile.gif)

I'm all for trying to make a decent motor better, but I wouldn't get a second mortgage on my house hoping to make something revolutionary for such a small market.

[Mark Henry]

Maybe I missed it, but I didn't see him post about developing parts or engines for sale or profit. (IMG:style_emoticons/default/smile.gif)

I'm all for trying to make a decent motor better, but I wouldn't get a second mortgage on my house hoping to make something revolutionary for such a small market.

I know I'm just being a ass-wipe, I guess when I see the theoretical threads then weeks, months, years go by and it's still theorising, it just increases the gravitational pull of my bunghole.

Actually you make the exact point that I'm trying to convey in your second sentence. Build the frick'in conventional engine... build the frick'in 914.... get yourself some frick'in seat time.
THEN you will be enlightened as to what the 914 is about. It will at this point inspire you to invent the type 4 fluxcapacitor. OR you will find your inner peace in the yin and yang of how the 914, for all it's faults, still makes you at one with the twisties.