Connecting Rods

Bad503 · 03-27-2007, 11:09 PM

Is there anyone experimenting with using a shorter connecting rod length pros / cons

Time the piston dwells @ TDC and BDC ??!!

NORMAN BARNARD · 03-28-2007, 04:56 PM

BAD 503,
YOU NOTICE THE SILENCE ON THIS QUESTION!!!! IT MUST BE WORTH INVESTIGATING........

Adger Smith · 03-31-2007, 12:13 AM

Yea, It's worth something... A big D.Q. in Stock & Super Stock the rods have to be: Length tolerances are +/- .025" from rod lengths shown in NHRA Tech Bulletins that is taken from the NHRA site on NHRA accepted Rods
Could this be the reason for the lack of answers to your question?

03-31-2007, 12:36 PM

Quote:

Yea, It's worth something... A big D.Q. in Stock & Super Stock the rods have to be: Length tolerances are +/- .025" from rod lengths shown in NHRA Tech Bulletins that is taken from the NHRA site on NHRA accepted Rods
Could this be the reason for the lack of answers to your question?

Exactly. Wasn't worth answering. The answer is clearly defined in the rulebook.

NHRA #7494 SS/H
1970 AMC AMX 390
"Best Appearing" @ NHRA '06 Pacific Sports Nationals
Arizona's BEST Realtor supports racers!
Now celebrating 14 years as a Realtor,
Call me @ 602-418-9797 or JeffLeeAzRealty@Qwest.net

NORMAN BARNARD · 03-31-2007, 07:46 PM

WITH ALL DUE RESPECT TO ADGER AND JEFF, BUT I DIDN'T READ ANYTHING IN THE ORIGINAL POST RELATING TO STOCK/SUPER STOCK OR DID I MISS SOMETHING????

will prater · 03-31-2007, 11:33 PM

Bad503
David Reher of Reher & Morrison has written some information on their findings with pro stock motors, maybe you can find it.

wprater

Bruce Fulper · 04-01-2007, 12:25 AM

http://www.pontiacpower.com/Long%20Rod%20Fallacy.html

"The less I race the crankier I get..."

NovaMan · 04-01-2007, 01:39 AM

I can't remember where I read it, but I believe David Reher's position is that the best connecting rod is the one that fits.

~Pete
1970 Nova
12.653@105.43

SSDiv6 · 04-01-2007, 02:01 AM

http://www.pontiacpower.com/Long%20Rod%20Fallacy.html

A lot of incorrect information on this article.

The choice rod length is dictated by the deck height, angle and width of the block.

Bob Mulry · 04-01-2007, 04:18 AM

Here is the link to the rod article---copy & paste

http://www.rehermorrison.com/techTalk/10b.htm

03-27-2007, 11:09 PM	#1
Bad503 Junior Member Join Date: Mar 2007 Location: Hays KS Posts: 28 Likes: 0 Liked 0 Times in 0 Posts	Connecting Rods Is there anyone experimenting with using a shorter connecting rod length pros / cons Time the piston dwells @ TDC and BDC ??!!

03-31-2007, 12:13 AM	#3
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,349 Likes: 433 Liked 676 Times in 260 Posts	Yea, It's worth something... A big D.Q. in Stock & Super Stock the rods have to be: Length tolerances are +/- .025" from rod lengths shown in NHRA Tech Bulletins that is taken from the NHRA site on NHRA accepted Rods Could this be the reason for the lack of answers to your question? __________________ Adger Smith (Former SS)

04-01-2007, 01:39 AM	#8
NovaMan Member Join Date: Sep 2004 Location: Kalamazoo, MI Posts: 117 Likes: 0 Liked 0 Times in 0 Posts	I can't remember where I read it, but I believe David Reher's position is that the best connecting rod is the one that fits. ~Pete 1970 Nova 12.653@105.43 __________________ ~Pete 1970 Nova

04-01-2007, 04:18 AM	#10
Bob Mulry VIP Member Join Date: Apr 2002 Location: Coarsegold, CA Posts: 1,017 Likes: 57 Liked 321 Times in 101 Posts	Here is the link to the rod article---copy & paste http://www.rehermorrison.com/techTalk/10b.htm __________________ Bob Mulry 7516 STK A & M Motorsports

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03-28-2007, 04:56 PM	#2
NORMAN BARNARD Member Join Date: Mar 2006 Location: EL PASO, TEXAS Posts: 156 Likes: 0 Liked 2 Times in 2 Posts	BAD 503, YOU NOTICE THE SILENCE ON THIS QUESTION!!!! IT MUST BE WORTH INVESTIGATING........

03-31-2007, 07:46 PM	#5
NORMAN BARNARD Member Join Date: Mar 2006 Location: EL PASO, TEXAS Posts: 156 Likes: 0 Liked 2 Times in 2 Posts	WITH ALL DUE RESPECT TO ADGER AND JEFF, BUT I DIDN'T READ ANYTHING IN THE ORIGINAL POST RELATING TO STOCK/SUPER STOCK OR DID I MISS SOMETHING????

03-31-2007, 11:33 PM	#6
will prater Member Join Date: Sep 2002 Location: Carthage, MO Posts: 108 Likes: 2 Liked 7 Times in 4 Posts	Bad503 David Reher of Reher & Morrison has written some information on their findings with pro stock motors, maybe you can find it. wprater

04-01-2007, 12:25 AM	#7
Bruce Fulper Senior Member Join Date: Aug 2004 Location: So. Cal. Posts: 651 Likes: 4 Liked 54 Times in 33 Posts	http://www.pontiacpower.com/Long%20Rod%20Fallacy.html "The less I race the crankier I get..."

04-01-2007, 02:01 AM	#9
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 2,989 Likes: 690 Liked 1,453 Times in 541 Posts	http://www.pontiacpower.com/Long%20Rod%20Fallacy.html A lot of incorrect information on this article. The choice rod length is dictated by the deck height, angle and width of the block.