|
505" RB stroker quench
#1216040
04/15/12 09:20 AM
04/15/12 09:20 AM
|
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
MoparJunkie
OP
super stock
|
OP
super stock
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
|
Hey guys... My piston is .010 in the hole. What gasket is available that will give me no more than .030 compressed thickness? I want to stay in the .035-.040 range...
"It takes a Mopar to catch a Mopar”
1971 Roadrunner FJ6 Sassy Grass 505"RB, 18 spline 4 speed, and Dana 60 with 3.54
2022 Hellcat Charger Widebody Redeye Jailbreak: Hellraisin with 8 speed auto
|
|
|
Re: 505" RB stroker quench
[Re: JohnRR]
#1216042
04/15/12 02:13 PM
04/15/12 02:13 PM
|
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
MoparJunkie
OP
super stock
|
OP
super stock
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
|
I remember hearing about those who sells them?
"It takes a Mopar to catch a Mopar”
1971 Roadrunner FJ6 Sassy Grass 505"RB, 18 spline 4 speed, and Dana 60 with 3.54
2022 Hellcat Charger Widebody Redeye Jailbreak: Hellraisin with 8 speed auto
|
|
|
Re: 505" RB stroker quench
[Re: 451Mopar]
#1216044
04/15/12 09:26 PM
04/15/12 09:26 PM
|
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
MoparJunkie
OP
super stock
|
OP
super stock
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
|
Okay... Another issue. How important is quench??? I can run .039" gasket compressed and be at 11.06. Use the gasket I have now which is .043 compressed and I'm 10.9. If I go to the cometic at .027 I'm in at 11.6. I don't know that I want to push the c/r that high. I would feel better at 11.06 with the felpro 1009 at .039. So that sets me a total of .049(gasket and piston .010" in the hole...)I know with "quench" you want to stay in the .035-.040, so should I even fret about "quench"???? Or is there going to be a huge difference by not sticking to the "quench" guidelines?
"It takes a Mopar to catch a Mopar”
1971 Roadrunner FJ6 Sassy Grass 505"RB, 18 spline 4 speed, and Dana 60 with 3.54
2022 Hellcat Charger Widebody Redeye Jailbreak: Hellraisin with 8 speed auto
|
|
|
Re: 505" RB stroker quench
[Re: MoparJunkie]
#1216045
04/15/12 11:26 PM
04/15/12 11:26 PM
|
Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
|
I like to shoot for the best quench I can get even if it means a tad higher comp. The best quench is of course in the .040 to .042 area. Are you running aluminum heads ? At .049 you will still have a little quench. My quench is about .046 and I have 10.6 comp with my aluminum Indy EZ heads and I have no spark knock or ping at all with 37 degrees total. If its aluminum heads I would try to keep it about 11.0 at the highest as it will also depend on the cam you use. Iron heads I like to keep at 10.0 and this is with quench on both heads. If you can get it in the .045 area and no more then 11.0 thats what I would shoot for but even at .049 you may get away with it depending on the cam for cyl pressure. Ron
Last edited by 383man; 04/15/12 11:28 PM.
|
|
|
Re: 505" RB stroker quench
[Re: Rug_Trucker]
#1216049
04/16/12 05:03 PM
04/16/12 05:03 PM
|
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
MoparJunkie
OP
super stock
|
OP
super stock
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
|
Eddy's they are cut to 74cc...
"It takes a Mopar to catch a Mopar”
1971 Roadrunner FJ6 Sassy Grass 505"RB, 18 spline 4 speed, and Dana 60 with 3.54
2022 Hellcat Charger Widebody Redeye Jailbreak: Hellraisin with 8 speed auto
|
|
|
Re: 505" RB stroker quench
[Re: dogdays]
#1216051
04/16/12 10:03 PM
04/16/12 10:03 PM
|
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
MoparJunkie
OP
super stock
|
OP
super stock
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
|
The piston has a 17cc dish... Thats where we get the 11.0/1
"It takes a Mopar to catch a Mopar”
1971 Roadrunner FJ6 Sassy Grass 505"RB, 18 spline 4 speed, and Dana 60 with 3.54
2022 Hellcat Charger Widebody Redeye Jailbreak: Hellraisin with 8 speed auto
|
|
|
Re: 505" RB stroker quench
[Re: MoparJunkie]
#1216052
04/17/12 04:08 AM
04/17/12 04:08 AM
|
Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
|
master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
|
My 505 uses the 440 source 7.1" rod kit with the 17cc dish pistons, but I had the block milled to zero deck with the pistons, used the standard Fel-Pro 8519-PT1 head gasket (it has a larger bore size for the stealth heads), and 84cc Stealth heads for a compression ratio of 10.33:1.
With 74cc heads, 0.010" in below deck and the 0.027 Cometic gasket, I get 11.34:1 compression.
With the 0.039" 1009 Fel-Pro gasket, 11.02:1 compression.
I think the slightly higher compression with good quench would be better than the slightly lower compression ratio and less quench.
If your cam is larger than 290 degrees duration (and not installed advanced), you should be OK on pump premium if you keep the intake air cool and engine temps do not get too high.
|
|
|
Re: 505" RB stroker quench
[Re: 451Mopar]
#1216053
04/17/12 09:04 AM
04/17/12 09:04 AM
|
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
MoparJunkie
OP
super stock
|
OP
super stock
Joined: Sep 2006
Posts: 1,131
Home of the Bluegrass
|
All things considered I think I'm going to go with the felpro 1009's. My new cam is a racer brown custom grind 243@.050 duration and .510" lift. I talked to Jim @ RacerBrown and we decided this is the best cam for my new goals... Do any of you guys use the copper sealer on the 1009's? The last 440 I built I used them with no sealer, but I sold the car shortly after? I had an oil seepage problem with this current stroker so I want to make sure I fix this seepage problem while I'm at it...
"It takes a Mopar to catch a Mopar”
1971 Roadrunner FJ6 Sassy Grass 505"RB, 18 spline 4 speed, and Dana 60 with 3.54
2022 Hellcat Charger Widebody Redeye Jailbreak: Hellraisin with 8 speed auto
|
|
|
Re: 505" RB stroker quench
[Re: MoparJunkie]
#1216055
04/17/12 08:07 PM
04/17/12 08:07 PM
|
Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
Performance Only
top fuel
|
top fuel
Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
|
there seems to be some unknowns in the equation as far as figuring out a true compression ratio.
assuming you have a 4.350 bore and 4.250 stroke, the swept volume is 505.2976 at .010 in the hole with a .039 gasket with 4.410 bore in the gasket (9.7600 cc's) with a net 17 cc dish and 74 cc chamber, your C/R would be 10.9891-1
with a .027 X 4.410 it would be 11.3287-1
the real determining factor in my mind would be the cam specs. where does the intake valve close abdc? that will have more effect on the cylinder pressure than any one other thing mentioned. c/r by itself means very little IMO. i've built plenty of 12.5-1 motors with 185 psi cranking compression and conversely i've built 10-1 combo's with 200 + psi cylinder pressure.
machine shop owner and engine builder
|
|
|
Re: 505" RB stroker quench
[Re: MoparJunkie]
#1216056
04/17/12 08:25 PM
04/17/12 08:25 PM
|
Joined: May 2003
Posts: 6,562
Downtown Roebuck Ont
Twostick
Still wishing...
|
Still wishing...
Joined: May 2003
Posts: 6,562
Downtown Roebuck Ont
|
Quote:
All things considered I think I'm going to go with the felpro 1009's. My new cam is a racer brown custom grind [Email]243@.050[/Email] duration and .510" lift. I talked to Jim @ RacerBrown and we decided this is the best cam for my new goals... Do any of you guys use the copper sealer on the 1009's? The last 440 I built I used them with no sealer, but I sold the car shortly after? I had an oil seepage problem with this current stroker so I want to make sure I fix this seepage problem while I'm at it...
Good luck with those 1009's. My 440 at 4.350" had such a big chamfer at the top of the bore that the 1009 gasket overhung the bore by a bunch. My understanding is that this is a common problem at least with later 70's blocks.
Just a heads up to check.
Kevin
|
|
|
Re: 505" RB stroker quench
[Re: Twostick]
#1216058
04/17/12 09:46 PM
04/17/12 09:46 PM
|
Joined: Jun 2006
Posts: 344
PA
noplanb
enthusiast
|
enthusiast
Joined: Jun 2006
Posts: 344
PA
|
Quote:
Quote:
All things considered I think I'm going to go with the felpro 1009's. My new cam is a racer brown custom grind [Email]243@.050[/Email] duration and .510" lift. I talked to Jim @ RacerBrown and we decided this is the best cam for my new goals... Do any of you guys use the copper sealer on the 1009's? The last 440 I built I used them with no sealer, but I sold the car shortly after? I had an oil seepage problem with this current stroker so I want to make sure I fix this seepage problem while I'm at it...
Good luck with those 1009's. My 440 at 4.350" had such a big chamfer at the top of the bore that the 1009 gasket overhung the bore by a bunch. My understanding is that this is a common problem at least with later 70's blocks.
Just a heads up to check.
Kevin
+1. I had the same problem with a 75 440 block, the chamfers are ridiculously large. Needed the 8519 (4.5" bore IIRC) as the standard Fel-Pros wouldn't cover the chamfer.
YMMV, but check it. Don't assume.
Last edited by noplanb; 04/17/12 09:47 PM.
remember when you said honey, some day that car is gonna look so good in front of our house
|
|
|
|
|
