Compression ratio's-a common asked question
03-11-2013, 03:20 AM
#1
Supreme Member
Thread Starter
Join Date: Jul 2011
Posts: 2,529
Likes: 0
Received 0 Likes
on
0 Posts
Compression ratio's-a common asked question
03-11-2013, 07:09 AM
#2
Moderator
Join Date: Jul 1999
Location: 51°N 114°W, 3500'
Posts: 17,120
Likes: 0
Received 123 Likes
on
104 Posts
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Compression ratio's-a common asked question
So what's your question?
03-11-2013, 09:00 AM
#3
On Probation
Join Date: Oct 2008
Location: Northern Utah
Posts: 6,319
Likes: 0
Received 17 Likes
on
17 Posts
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: Compression ratio's-a common asked question
Every few months he posts something like that. I do similar, but I post stuff that people struggle to apply to these cars. Lots of good articles to Google if you want safe SCR, or if you want to learn how to get away with high SCR, or if you want to understand DCR. They're all just tools to help you pre-set your actual cranking compression. DCR is most useful if it takes into account your elevation, as well as your displacement, your SCR and your cam specs. If that tests too high, that's when you tell me your combo.
03-11-2013, 02:53 PM
#4
Moderator
iTrader: (14)
Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 43,169
Likes: 0
Received 35 Likes
on
34 Posts
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
And if you went strictly by that article, you'd get your SCR wrong.
Not a single mention of the contribution of the head gasket.
Poorly written, if you ask me.
Not a single mention of the contribution of the head gasket.
Poorly written, if you ask me.
03-11-2013, 05:06 PM
#5
Supreme Member
Re: Compression ratio's-a common asked question
We've all read this one however I feel it's still one of the better written articles on the subject.
http://cochise.uia.net/pkelley2/DynamicCR.html
The calculator has provided me with hours of entertainment and yes, I'm easily amused.
http://cochise.uia.net/pkelley2/DynamicCR.html
The calculator has provided me with hours of entertainment and yes, I'm easily amused.
03-11-2013, 10:29 PM
#6
Supreme Member
Thread Starter
Join Date: Jul 2011
Posts: 2,529
Likes: 0
Received 0 Likes
on
0 Posts
Thread
Thread Starter
Forum
Replies
Last Post
hectre13
Engine/Drivetrain/Suspension Parts for Sale
7
08-26-2015 08:17 AM
NinjaNife
Tech / General Engine
27
08-23-2015 11:49 AM