Re: 505cui stroker - dished or flat ?
[Re: smoke]
#1279203
08/05/12 07:15 PM
08/05/12 07:15 PM
|
Joined: Aug 2003
Posts: 43,748 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,748
Bend,OR USA
|
Last edited by Cab_Burge; 08/06/12 12:45 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: 505cui stroker - dished or flat ?
[Re: Cab_Burge]
#1279205
08/05/12 07:57 PM
08/05/12 07:57 PM
|
Joined: Jan 2003
Posts: 75,282 A gulag near you.
JohnRR
I Win
|
I Win
Joined: Jan 2003
Posts: 75,282
A gulag near you.
|
Quote:
Do not go to a full dish piston, if it will have no quench Been there, done that, my 512 Ross pistons have a 22 CC ful ldish, they weigh 456 grams without the wrist pins and rings I have bulit a few BB Mopar stroker motors over the years,a lot more stock stroke pump gas motors, more than I can remember accureatly now I have learned a few things along the way from past errors Do the math on what CC reverse dome it will take to make your intended compression ratio with all your other specs., IE deck hieght, combustion CC and so on and go from there
Cab the source piston should be a D dish
|
|
|
Re: 505cui stroker - dished or flat ?
[Re: JohnRR]
#1279206
08/05/12 08:17 PM
08/05/12 08:17 PM
|
Joined: Jan 2003
Posts: 16,936 NC
440Jim
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 16,936
NC
|
Double check the exact part number you are ordering, but this is a picture from the 440Source web site of their dish pistons. Good "D" shape with some quench area. You can even machine some off the top (0.00-0.030?) to reduce the dish to customize your compression ratio (decking the block to match). But I think the 11 CR you mentioned is enough.
|
|
|
Re: 505cui stroker - dished or flat ?
[Re: smoke]
#1279210
08/06/12 12:29 AM
08/06/12 12:29 AM
|
Joined: Apr 2005
Posts: 12,271 Overpriced Housing Central
RobX4406
I Live Here
|
I Live Here
Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
|
Quote:
Rob,
i know what you mean, but it can be done and maybe our taste regarding rough idle differs That's what i call a slightly rough idle, and this ride even has a 12:1 cr. http://www.youtube.com/watch?v=lN9uEzqzdA0
My idea of a mild idle is like most peoples idea of rough. That cam they gave you as a recommendation is a puppy dog in a 505.
If that video is acceptable, I bet that Hyd Roller in that video is in at least the 250 at .050 range which is more along what I would run in a street car. Many people would think that's a rough idle or not street friendly so when you say "mild" you get what comp recommended. Ask Streetwize who posted in here, I believe it's his engine build.
|
|
|
Re: 505cui stroker - dished or flat ?
[Re: RobX4406]
#1279211
08/06/12 12:49 AM
08/06/12 12:49 AM
|
Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
|
Dont know if you can get a good idea of my 493's idle in this vid. Its a solid flat tappet speced by Dwayne Porter and I love it. It has 264 & 270 @ .050 with a lift about .592. With my 1.6 rockers its about .630 lift and its a 110 LSA. I have it in the eng on a 106 centerline. Dwayne is very good as you could call him and talk to him. Let me know if you would want his phone #. I usually pick my own cams but I went with Dwayne because I wanted a cam speced for this eng and I know he could spec a better cam then me. Ron http://www.youtube.com/watch?v=bYIM2HLaOI4&feature=related
Last edited by 383man; 08/06/12 12:50 AM.
|
|
|
Re: 505cui stroker - dished or flat ?
[Re: smoke]
#1279213
08/06/12 08:23 AM
08/06/12 08:23 AM
|
Joined: Feb 2005
Posts: 4,333 Prospect, PA
BSB67
master
|
master
Joined: Feb 2005
Posts: 4,333
Prospect, PA
|
Quote:
@Rob
you are absolutely right: missmatch. I'll give them a call on monday to get a better suggestion. regards
Honestly, I would recommend not calling Comp Cam. You will only get a different answer. What confidence will you have in the second answer? The fact that they recommended what they did the first time should be evidence enough to not go back. Call a Comp Cam distributor that has committed himself to the sport. I have used and recommend Dwayne Porter, but there are several good choices, just ask on this board. The additional advice/information that you will get from a guy like Dwayne is priceless.
|
|
|
Re: 505cui stroker - dished or flat ?
[Re: Streetwize]
#1279216
08/06/12 11:50 AM
08/06/12 11:50 AM
|
Joined: May 2003
Posts: 6,621 Downtown Roebuck Ont
Twostick
Still wishing...
|
Still wishing...
Joined: May 2003
Posts: 6,621
Downtown Roebuck Ont
|
Quote:
This is an agressive bullet Hydraulic roller 264/268@.050 on 108's in my 517....very similar specs to Ron's flat tappet.
http://www.youtube.com/watch?v=jd8GeXYYkKU&feature=youtube_gdata_player
I agree that The stroker can sound as nasty as the same cam in a 440, the difference is the off idle drivabilty and roll on power will be much better, kind of the best if both worlds.
The only reason I installed a 2800 stall converter on mine was to cushion the drivetrain from the 1100 rpm idle. It drove away just fine with the stock converter and 2.76 gears.
Ain't displacement grand?
Kevin
|
|
|
|
|