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solve a debate for me #896243 01/04/11 09:38 PM 01/04/11 09:38 PM
Joined: Jun 2010 Posts: 42 napa, ca R rice2muscle OP member
rice2muscle OP member R Joined: Jun 2010 Posts: 42 napa, ca	a friend of mine and i are debating rod stroke ratio, he believes that the r/s ratio determines where in the rpm power band your engine will make power. I think he is an idiot, and it has to do more with head flow, cam selection etc... he is standing by his point that with a longer stroke your dwell time is reduced at tdc thus causing a loss in power. anyone got some insight i can use???

Re: solve a debate for me [Re: rice2muscle] #896244 01/04/11 09:54 PM 01/04/11 09:54 PM
Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA bigtimeauto Trophy Winner
bigtimeauto Trophy Winner Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA	and here we go again...... BB, TT5,Procharged 3300lb Street Car 4.79/154

Re: solve a debate for me [Re: bigtimeauto] #896245 01/04/11 10:05 PM 01/04/11 10:05 PM
Joined: Sep 2005 Posts: 12,481 Chino Valley RodStRace I Live Here
RodStRace I Live Here Joined: Sep 2005 Posts: 12,481 Chino Valley	Google "rod/stroke ratio" Read all the theorys, avoid looking at the pictures!

Re: solve a debate for me [Re: rice2muscle] #896246 01/04/11 10:19 PM 01/04/11 10:19 PM
Joined: Dec 2008 Posts: 1,200 UK 6 602heavy pro stock
602heavy pro stock 6 Joined: Dec 2008 Posts: 1,200 UK	Quote: he is standing by his point that with a longer stroke your dwell time is reduced at tdc thus causing a loss in power. anyone got some insight i can use??? .....then you go tell him 'long rod is an advantage on power stroke'...

Re: solve a debate for me [Re: 602heavy] #896247 01/04/11 10:22 PM 01/04/11 10:22 PM
Joined: Jan 2003 Posts: 20,205 Park Forest, IL slantzilla Too Many Posts
slantzilla Too Many Posts Joined: Jan 2003 Posts: 20,205 Park Forest, IL	You need a long rod to properly set your pinion angle too. "Everybody funny, now you funny too."

Re: solve a debate for me [Re: rice2muscle] #896248 01/04/11 10:27 PM 01/04/11 10:27 PM
Joined: Jan 2003 Posts: 6,591 Canton, Ohio S Sport440 master
Sport440 master S Joined: Jan 2003 Posts: 6,591 Canton, Ohio	Whats rod stroke ratio?, never heard of it. mike

Re: solve a debate for me [Re: 602heavy] #896249 01/04/11 10:33 PM 01/04/11 10:33 PM
Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA bigtimeauto Trophy Winner
bigtimeauto Trophy Winner Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA	Quote: Quote: he is standing by his point that with a longer stroke your dwell time is reduced at tdc thus causing a loss in power. anyone got some insight i can use??? .....then you go tell him 'long rod is an advantage on power stroke'... what if its boosted??? BB, TT5,Procharged 3300lb Street Car 4.79/154

Re: solve a debate for me [Re: bigtimeauto] #896250 01/04/11 10:38 PM 01/04/11 10:38 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 master
emarine01 master E Joined: Jan 2007 Posts: 3,695 nc	I think it has something to do with flux capacitors vs piston speed....always go with more flux

Re: solve a debate for me [Re: bigtimeauto] #896251 01/04/11 10:39 PM 01/04/11 10:39 PM
Joined: Oct 2009 Posts: 1,288 Oregon sg66mopar pro stock
sg66mopar pro stock Joined: Oct 2009 Posts: 1,288 Oregon	What if your car goes faster than the chassis cert allows no matter what rod length or stroke you're using? Last edited by sg66mopar; 01/04/11 10:39 PM.

Re: solve a debate for me [Re: bigtimeauto] #896252 01/04/11 10:40 PM 01/04/11 10:40 PM
Joined: Dec 2008 Posts: 1,200 UK 6 602heavy pro stock
602heavy pro stock 6 Joined: Dec 2008 Posts: 1,200 UK	Quote: Quote: Quote: he is standing by his point that with a longer stroke your dwell time is reduced at tdc thus causing a loss in power. anyone got some insight i can use??? .....then you go tell him 'long rod is an advantage on power stroke'... what if its boosted???

Re: solve a debate for me [Re: sg66mopar] #896253 01/04/11 10:42 PM 01/04/11 10:42 PM
Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA bigtimeauto Trophy Winner
bigtimeauto Trophy Winner Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA	Quote: What if your car goes faster than the chassis cert allows no matter what rod length or stroke you're using? then you need a Continuum Transfunctioner BB, TT5,Procharged 3300lb Street Car 4.79/154

Re: solve a debate for me [Re: bigtimeauto] #896254 01/04/11 10:45 PM 01/04/11 10:45 PM
Joined: Dec 2008 Posts: 1,200 UK 6 602heavy pro stock
602heavy pro stock 6 Joined: Dec 2008 Posts: 1,200 UK	Hey Rice2muscle , go tell you're friend to pop over to Moparts , i'm sure he'll back off when he reads this thread.

Re: solve a debate for me [Re: 602heavy] #896255 01/04/11 11:03 PM 01/04/11 11:03 PM
Joined: Jun 2010 Posts: 3,112 LONG ISLAND fishy340 master
fishy340 master Joined: Jun 2010 Posts: 3,112 LONG ISLAND	just make sure the muffler berrings dont bind,cause the smoke seperator will malfunction

Re: solve a debate for me [Re: rice2muscle] #896256 01/04/11 11:15 PM 01/04/11 11:15 PM
Joined: Aug 2004 Posts: 9,654 Southern by Choice S Shoozy I have a foot fetish
Shoozy I have a foot fetish S Joined: Aug 2004 Posts: 9,654 Southern by Choice	You came on to Moparts to "solve" a debate? Seriously? Carry on. Old, tired, and sometimes broke down. Me, not my car...

Re: solve a debate for me [Re: rice2muscle] #896257 01/04/11 11:17 PM 01/04/11 11:17 PM
Joined: Nov 2003 Posts: 6,293 Rock Springs Bob_Coomer master
Bob_Coomer master Joined: Nov 2003 Posts: 6,293 Rock Springs	Let me guess, he has a small Ford or Chevy, they have a poor rod stroke ratio. It has much less to do with the engine than what he is saying. Trying to argue with him or anyone is almost as dumb. [color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]

Re: solve a debate for me [Re: Bob_Coomer] #896258 01/04/11 11:32 PM 01/04/11 11:32 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	rod ratio wins races... Mopar Performance

Re: solve a debate for me [Re: Shoozy] #896259 01/04/11 11:34 PM 01/04/11 11:34 PM
Joined: Oct 2005 Posts: 8,908 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,908 Ontario, Canada	Quote: You came on to Moparts to "solve" a debate? Seriously? Carry on. This is by far THE BEST reply yet !!

Re: solve a debate for me [Re: moparniac] #896260 01/04/11 11:48 PM 01/04/11 11:48 PM
Joined: Jul 2010 Posts: 1,845 Tampa D DusterDave top fuel
DusterDave top fuel D Joined: Jul 2010 Posts: 1,845 Tampa	When you find Sasquatch, you'll find the solution to the rod/stroke ratio debate. Gone to the dark side with an LS3 powered '57 Chevy 210

Re: solve a debate for me [Re: rice2muscle] #896261 01/05/11 12:00 AM 01/05/11 12:00 AM
Joined: Aug 2003 Posts: 43,285 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,285 Bend,OR USA	Quote: a friend of mine and i are debating rod stroke ratio, he believes that the r/s ratio determines where in the rpm power band your engine will make power. I think he is an idiot, and it has to do more with head flow, cam selection etc... he is standing by his point that with a longer stroke your dwell time is reduced at tdc thus causing a loss in power. anyone got some insight i can use??? Ask him if you have the same motor and change the lengths of the rods, short rod first and then a long rod, say .300 longer, and nothing else except the pistons to make the same compression ratio, cubic inch and so on does that make the motor have more HP, more torque or less of one and more of the other or less of both Please let us know his responce BTW, the short rod thanking is that it spends less time at TDC than the same stroke motor with a longer rod thus making for more or less piston to valve clearances at and near TDC . I like long rods, 1.75 ratio or longer on rod lengths to stroke Last edited by Cab_Burge; 01/05/11 01:04 AM. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: solve a debate for me [Re: DusterDave] #896262 01/05/11 12:05 AM 01/05/11 12:05 AM
Joined: Apr 2004 Posts: 1,056 Mt.Vernon IL Twin Turbo Mower super stock
Twin Turbo Mower super stock Joined: Apr 2004 Posts: 1,056 Mt.Vernon IL	"The more they overthink the plumbing, the easier it is to stop up the drain." Montgomery Scott

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