Random Thoughts - Part Deux

[humfrz]

Originally Posted by Ultramaroon

Ok, yeah, I'm a smartypants.

- you peaked!




humfrz

[EAGLE5]

Originally Posted by Lantanafrs2

What is the point of variable compression ratio?

Marketing.
https://www.caranddriver.com/feature...-fuel-economy/

[Ultramaroon]

Originally Posted by humfrz

- you peaked!




humfrz

I did about 20 years ago.

[humfrz]

Originally Posted by Ultramaroon

I did about 20 years ago.

Well, seeeeeeeeeeee


humfrz

[humfrz]

Hells bells, we had variable compression engines commercially produced back in the 30s.

Iffen ya don't believe that, just try starting one of these suckers without knowing about it -


humfrz

[p1l0t]

Nice tractor

Sent from my SM-G975U using Tapatalk

[Boomerang]

Originally Posted by p1l0t

Nice tractor

Sent from my SM-G975U using Tapatalk

[Tcoat]

Originally Posted by humfrz

Hells bells, we had variable compression engines commercially produced back in the 30s.

Iffen ya don't believe that, just try starting one of these suckers without knowing about it -


humfrz

I had at least a couple of cars that had variable compression. They weren't supposed to be variable but they were.

[Sapphireho]

Originally Posted by Tcoat

I had at least a couple of cars that had variable compression. They weren't supposed to be variable but they were.

Mine varied depending on what cylinder you picked.

[Tcoat]

Originally Posted by Sapphireho

Mine varied depending on what cylinder you picked.

[Lantanafrs2]

Originally Posted by Spuds

Higher pressure results in less losses to entropy during combustion. In theory you want the highest compression you can get at all times. But the limiting factor is the tendency of gasoline/air to detonate when you compress it too quickly. By decreasing the maximum pressure, you decrease the rate of compression. Thus allowing higher rpm, advancing timing, and more fuel/air (higher boost) at higher temperatures.

Being able to tune the compression ratio gives you the best of both worlds in the same engine.

Absolutely but Nissan's solution seems somewhat elaborate to me. I agree with the poster who called it "marketing "

[JD001]

Originally Posted by humfrz

Hells bells, we had variable compression engines commercially produced back in the 30s.

Iffen ya don't believe that, just try starting one of these suckers without knowing about it -


humfrz

No messing with that steering set-up.. couldn't be more direct. I wonder if anyone has tried a similar mod on their Twin.

[Tcoat]

Originally Posted by JD001

No messing with that steering set-up.. couldn't be more direct. I wonder if anyone has tried a similar mod on their Twin.

Dat camber though! Need more low and Rocket Bunny.

[Nevermore]

Aw shit, finally able to pull the required documents and open a business checking account. Time to spend some money!