Home | Register | Login | Contact Us

 
Auto Math
Classifieds
Forum
Gallery
Games
Garage
Tech Articles
Utilites
 
FAQFAQ    SearchSearch    RegisterRegister    Log inLog in    Log in to check your private messagesLog in to check your private messages    Forum Subscriptions1/4 Mile Table 

340 Build
Goto page Previous  1, 2, 3, 4, 5  Next
 
Post new topic   Reply to topic    SMOKEmUP.com Forum Index -> Mopar - Small Block
View previous topic :: View next topic  
Author Message
mopardave
Member


Joined: 20 Dec 2009
Posts: 26

956.46 points



PostPosted: Fri Jan 15, 2010 5:44 pm    Post subject: Reply with quote

I always laugh when Chinese or Comp Cams rockers break....except when the Comp rockers were mine!

The Comp Magnum steel roller rockers suck. Comp advertisements said aluminum sucked for years. Mercruiser uses Crane Gold Race Roller Rockers in all of their performance engines. They will see far more abuse than just about any car engine short of roundy round/road course racing.

These two pics are of the same rocker. Notice that the pin that the roller rides on is loose. In one pic it's to the left the next it's to the right. You don't catch it before it's too late....snap!





P.S. You've got everything but the kitchen sink in there now!
Back to top
View user's profile Send private message
mopardave
Member


Joined: 20 Dec 2009
Posts: 26

956.46 points



PostPosted: Fri Jan 15, 2010 5:46 pm    Post subject: Reply with quote

I know the pics suck...but trust me.
LOL

P.S. I'm so happy that you have such a great rod ratio compared to a stock 350 bottom end....all you had to do was re-engineer it into a better ratio.....like a mopar!
Back to top
View user's profile Send private message
mopardave
Member


Joined: 20 Dec 2009
Posts: 26

956.46 points



PostPosted: Fri Jan 15, 2010 6:13 pm    Post subject: Reply with quote

Hey man, I really did not want to come on here just to bust your balls. There is no such thing as "chrome molly", ok? Now, there is ChroMoly which is short for chromium molybdenum. When you post stuff like that...it just looks silly, ya know?

P.S. It looks silly when I do it too....
Back to top
View user's profile Send private message
Knarley Darley
Member


Joined: 22 Apr 2004
Posts: 1247

540230.26 points



PostPosted: Fri Jan 15, 2010 6:52 pm    Post subject: Reply with quote

Mopardave. You are really good at making friends Rolling Eyes
Back to top
View user's profile Send private message
mopardave
Member


Joined: 20 Dec 2009
Posts: 26

956.46 points



PostPosted: Fri Jan 15, 2010 6:58 pm    Post subject: Reply with quote

I've been told worse! LOL

An old timer at work last night called me "eclectic"....that was a new one!

P.S. I am on zero sleep since working 10 hours last night until 0230....and I'm not on crack!

And that's my excuse for being such a ball buster....today...I'll need a new one tomorrow...
Back to top
View user's profile Send private message
af2
Member


Joined: 01 Sep 2003
Posts: 5557
Location: grassvalley, ca
71191.50 points


1933 Willys Coupe

PostPosted: Fri Jan 15, 2010 7:27 pm    Post subject: Reply with quote

mopardave wrote:


P.S. I am on zero sleep since working 10 hours last night until 0230....and I'm not on crack!

And that's my excuse for being such a ball buster....today...I'll need a new one tomorrow...


Get some sleep.

With 7 guys in the Pitts(they all are helpful) with me when those rockers went to shyt, you would have heard a pin drop knowing it is my back pocket trying to make this work. The car is not a record braking car but is fun to both my Sons and me.
Back to top
View user's profile Send private message
af2
Member


Joined: 01 Sep 2003
Posts: 5557
Location: grassvalley, ca
71191.50 points


1933 Willys Coupe

PostPosted: Fri Jan 15, 2010 7:31 pm    Post subject: Reply with quote

Sorry OP!!! This shyt got way off base.
Back to top
View user's profile Send private message
mopardave
Member


Joined: 20 Dec 2009
Posts: 26

956.46 points



PostPosted: Fri Jan 15, 2010 9:44 pm    Post subject: Reply with quote

I hate breaking stuff!

My worst one? I manged to rip the driveshaft loose at the rear u joint hitting 4th at 100...not good!
Back to top
View user's profile Send private message
squeeezer
Member


Joined: 02 Mar 2007
Posts: 2427
Location: new richmond WI
191524.76 points


1991 Chevrolet Camaro

PostPosted: Fri Jan 15, 2010 11:17 pm    Post subject: Reply with quote

red bull gives rockers wings too???
_________________
Back to top
View user's profile Send private message
squeeezer
Member


Joined: 02 Mar 2007
Posts: 2427
Location: new richmond WI
191524.76 points


1991 Chevrolet Camaro

PostPosted: Fri Jan 15, 2010 11:24 pm    Post subject: Reply with quote

at what point does rod/stroke ratio no longer pay off???
_________________
Back to top
View user's profile Send private message
10sec.et
Member


Joined: 29 Mar 2006
Posts: 3472
Location: Houston,Texas
346624.78 points


1969 Oldsmobile Cutlass

PostPosted: Sat Jan 16, 2010 12:09 am    Post subject: Reply with quote

squeeezer wrote:
at what point does rod/stroke ratio no longer pay off???


when her hand......... uhh........ ahem, nevermind Embarassed .

_________________
af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

Back to top
View user's profile Send private message
mopardave
Member


Joined: 20 Dec 2009
Posts: 26

956.46 points



PostPosted: Sat Jan 16, 2010 1:28 am    Post subject: Reply with quote

The point of diminishing returns is generally around 1.95. Why? It's a build up of numbers. Simple math.

Forget the brand of the engine, insignificant in this discussion...to a point.
Extreme's:
If you use a 2" bore and a 4" stroke, you're screwed because your piston is having to travel 2" up and 2" down. That means the connecting rod, if you could make one strong enough, would be crazy tight in the bore. To get around that you would need a very long rod. Very long rod is very heavy. The longer stroke also makes the piston dwell longer at TDC and BDC...not good. Also, the issue of trying to fit valves in there....

If you use a 2" stroke and a 4" bore, you have a nice big bore and valves but no stroke to pull the charge in and push out the exhaust. On the upside, you won't need much rod. It will be a very light rotating assembly, but with no blower...no cylinder fill and BS for compression. You will also have a piston that's trying to change direction like a fighter at mach 4. It aint gonna do it!

The biggest bore feasible with an optimum stroke is what you want. What is the optimum stroke? It does matter now, what brand we're building.

My brain is numb and I keep losing my train of thought....LOL....read this:
http://findarticles.com/p/articles/mi_qa4078/is_200509/ai_n15614621/
Back to top
View user's profile Send private message
squeeezer
Member


Joined: 02 Mar 2007
Posts: 2427
Location: new richmond WI
191524.76 points


1991 Chevrolet Camaro

PostPosted: Sat Jan 16, 2010 9:34 pm    Post subject: Reply with quote

so ive been wondering......

as far as mileage goes big bore small stroke in my estimate would be better too

as you say=more efficient

_________________
Back to top
View user's profile Send private message
mopardave
Member


Joined: 20 Dec 2009
Posts: 26

956.46 points



PostPosted: Mon Jan 25, 2010 3:44 pm    Post subject: Reply with quote

There is far more involved...that is just one piece to the puzzle.
most of the variables are designed in. read=can't be altered much.

If you want to design engines from the ground up, go to college...LOL

What was your next post gonna be? A long stroke small bore engine that get's good mileage while producing good power? Wow, not too predictable....
Back to top
View user's profile Send private message
af2
Member


Joined: 01 Sep 2003
Posts: 5557
Location: grassvalley, ca
71191.50 points


1933 Willys Coupe

PostPosted: Mon Jan 25, 2010 4:37 pm    Post subject: Reply with quote

Knarley Darley wrote:
Mopardave. You are really good at making friends Rolling Eyes


Getting better by the day. Confused
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    SMOKEmUP.com Forum Index -> Mopar - Small Block All times are GMT - 5 Hours
Goto page Previous  1, 2, 3, 4, 5  Next
Page 3 of 5

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum
Home | Contact Us | Automath | Cam Files | Dyno Search | Forum | Garage | Picture Gallery | Reaction Timer

Copyright 1997-2016 SMOKEmUP.com All rights reserved.
Advertising Info     Disclaimer     Privacy Policy