Turbo FAQ -Overlap Error-

Reply Subscribe

Thread Tools

Search this Thread

Jul 27, 2005 | 07:51 PM

jlm44

Thread Starter

On The Tree

Joined: Mar 2004

Posts: 145

Likes: 0

From: NV

Turbo FAQ -Overlap Error-

I just read the FAQ on turbos and went to the ForcedInductions.com web sight and I was woundering has anyone ever noticed that the section called Overlap has an error in their calculations?

Jul 27, 2005 | 08:22 PM

ddnspider

10 Second Club

iTrader: (26)

Joined: Aug 2004

Posts: 14,628

Likes: 1,778

From: FL

whats the error?

Jul 27, 2005 | 08:48 PM

EightBall

TECH Enthusiast

Joined: Mar 2004

Posts: 697

Likes: 0

yeah its true, he never multiplied by 2 it seems. I never paid attention since my cam always came out to -8 when I DID multiply by 2

Jul 27, 2005 | 08:54 PM

ddnspider

10 Second Club

iTrader: (26)

Joined: Aug 2004

Posts: 14,628

Likes: 1,778

From: FL

but the equation is correct?

Jul 27, 2005 | 08:55 PM

jlm44

Thread Starter

On The Tree

Joined: Mar 2004

Posts: 145

Likes: 0

From: NV

EightballTTA hit it right on the botton. I just hope that no one has had a cam ground to these specs because then they would definitely have to much negative valve overlap.

Jul 27, 2005 | 08:58 PM

ddnspider

10 Second Club

iTrader: (26)

Joined: Aug 2004

Posts: 14,628

Likes: 1,778

From: FL

so there example was messed up not the equations?

Jul 27, 2005 | 08:59 PM

jlm44

Thread Starter

On The Tree

Joined: Mar 2004

Posts: 145

Likes: 0

From: NV

The equation is correct just the math and example shown are incorrect. This could be a bad thing if a guy looks at the duration and lift and says to himself that this would work with my set up and then never actually does the math to find out that he's gone way wrong with his setup.

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Jul 27, 2005 | 11:20 PM

jlm44

Thread Starter

On The Tree

Joined: Mar 2004

Posts: 145

Likes: 0

From: NV

Thanks....I was wondering who I should notify to get that fixed.

Jul 28, 2005 | 01:17 AM

#10

NA$TY-TA

TECH Senior Member

iTrader: (21)

Joined: Aug 2002

Posts: 10,331

Likes: 1

From: San Antonio, TX

I was on there also and saw that..... do any of you guys know if advance ground into a cam plays with it also..... like how to you compute it..... like say my old SC cam. a 230/236 114+4??
Kyle

Jul 28, 2005 | 06:27 PM

#11

EightBall

TECH Enthusiast

Joined: Mar 2004

Posts: 697

Likes: 0

If I'm right, it should have no effect on the equation, since the time the valve events occur is not a factor. Someone correct me if I'm wrong please...

Jul 29, 2005 | 09:48 AM

#12

Pro Stock John

LS1Tech Co-Founder

iTrader: (34)

Joined: Nov 2001

Posts: 45,325

Likes: 1,767

From: Chicago, IL

Jose, are you going to fix this error/typo?

Jul 29, 2005 | 10:58 AM

#13

JZ 97 SS 1500

LS1TECH Sponsor

iTrader: (2)

Joined: Aug 2002

Posts: 2,725

Likes: 0

From: Huntsville, AL

Sorry guys for the error....after writing that page I didn't proof read it very well I guess. Looks like I need to take a spelling/typing class as well...lol. I will try to correct it this weekend. We just have been slammed this week and now we are working with Australian customers which are 14 hours ahead of us... its driving me