New gas engines with compression ignition - Page 3 - Survivalist Forum
Survivalist Forum

Advertise Here

Go Back   Survivalist Forum > > >
Articles Classifieds Donations Gallery Groups Links Store Survival Files


Advertise Here
Similar Threads
Thread Thread Starter Forum Replies Last Post
Using the gas in my car tank to power my generator NJPrepper Disaster Preparedness General Discussion 31 02-01-2017 03:23 AM
AK47 Gas Port Reamer Cope's Distribuitng Cope's Distributing 0 12-29-2016 03:50 PM
2 1/2+ yr old - treated gas RockDoc Vehicles & Transportation 13 11-06-2016 10:45 AM
Off-The-Shelf Wood Gas Generator? TacticalFarmer Disaster Preparedness General Discussion 18 11-05-2016 11:32 AM

Thread Tools Display Modes
Old 01-28-2017, 05:55 PM
ppine ppine is offline
Join Date: Oct 2013
Location: Northern Nevada
Posts: 9,289
Thanks: 7,236
Thanked 9,567 Times in 4,716 Posts

Advertise Here

Originally Posted by jdemaris View Post
Not many direct-injected turbocharged diesels with a mechanical CR over 17 to 1 that I am aware of.

In 1965, I don't think the technology existed to safely operate a gas engine at 13 to 1 on standard pump gas. Most of the hottest muscle cars I am aware of (or had) were maxed out at 11 to 1. I know GM made some special edition engines in 1963 primarily just for racing that had 13.5 to 1 like the first 427.
I thought the hottest engine Chevy offered in 1965 was the 425 horse 396 with 11 to 1 CR.
I found some credible sources and you are absolutely correct. Bad memory.
Old 01-28-2017, 06:45 PM
The Old Coach The Old Coach is offline
Jack of Deplorable Trades
Join Date: Jul 2011
Posts: 4,047
Thanks: 812
Thanked 7,292 Times in 2,631 Posts

There were supercharged 2-valve aircraft engines in the WW2 era which had pumping pressures that would equate to 15:1 in high blower. They got away with because the geometric compression ratios were only 6:1 or even less, so the combustion chambers weren't in the shape of an orange peel. The pistons were either flat-topped or even concave. They also added alcohol/water injection to keep down detonation and help with cooling when the engine was throttled up to War Emergency Rating, a power level that the pilots were allowed to maintain for only ten minutes or so. Long enough to escape that Zero or FW-190 which had you boresighted. When (well, if) you got home, an engine change was required.


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 10:27 PM.

Powered by vBulletin®
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimisation provided by DragonByte SEO (Lite) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright © Kevin Felts 2006 - 2015,
Green theme by