AFM Web

Go Back   Ford Mustang Forums > Mustang Forums > 5.0 Mustang > 5.0L Tech

Welcome to our Mustang forums where Mustangers come together to hang out, discuss and enjoy their favorite Mustang hobby with fellow Mustang enthusiasts. We invite everyone to read, post, and enjoy our Mustang forum as well as the many other sections of our site.

You are currently viewing our forums as a guest. By joining our community you gain access to post topics, communicate with members, upload your photos and access many other special features. Registration is fast, simple and free so why wait, join our Mustang community today! If you have any problems with registration or your account login, please contact support.
Introductions | Mustang Lounge | 5.0 Talk | 5.0 Tech | 94-95 Tech | Mustang Tech | Racing | Regional

Reply
 
Old 01-06-2009   #1 (permalink)
lilorange79 is offline Apprentice

5.0L Member


Joined: Dec 2008
Posts: 53 Threads: 13
 lilorange79's Country Flag  View lilorange79's 18 photos
NW   Oregon
Default Do domed pistons work?

I ordered keith black domed pistons to get my compression to 10:1 with 63 cc heads and was told they would perform poorly....any one have this problem?
1979 mustang w/302
10:1 KB pistons
GT40X turbo swirl heads w/1.7 roller rockers
comp cam 230/236 dur. 520/523 lift
parker funnel web intake
750 holley dbl. pumper
race distributor and cdi w/super coil
long tube headers & flow masters 2.5" exhaust
elec. fan-fuel pump
2500-2800 stall converter
B&M street/strip kit and mega shifter
3.73 gears w/track lock
lilorange79 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 01-06-2009   #2 (permalink)
89BlkNotch is offline Made Member

5.0L Member


Joined: Nov 2008
Posts: 392 Threads: 20
 89BlkNotch's Country Flag
Commack   New York
Send a message via AIM to 89BlkNotch
Default

well it depends what the compression is with the pistons you had and it all depends on what you are looking to get out of the motor, and what method of intake you use such as NA, turboed, supercharged or whatever need more out of you to make any real decisions
__________________
1989 Ford Mustang LX Notchback,5.0L 5 speed
331 Stroker wuth forged eagle rotater, Scorpion roller rockers, mahle forged pistons, AFR185s,Spec Stage 2+ Clutch,Steeda Sub Frame Connectors with Seat supports,Hurst Short Throw Shifter, Mr. Gasket Hi0-Flo 180* T-Stat,Lunati VooDoo Series cam,Trickflow upper and lower intake,BBK CAI,BBK Long Tube Headers,BBK Off-Road H-Pipe,Flowmaster 40 Series Mufflers,Aluminum Driveshaft,17" Cobra R's,10000K HID's
One problem after the next !!
89BlkNotch is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 01-06-2009   #3 (permalink)
05horse is offline Top Dog

V6 Member
S197 Member


Joined: Nov 2008
Posts: 5,397 Threads: 148
 05horse's Country Flag  View 05horse's 44 photos  View 05horse's 5 classified ads
Centerville (communist)   Ohio
Send a message via AIM to 05horse Send a message via MSN to 05horse Send a message via Yahoo to 05horse
Default

i dont know anything about this, but domed, like domed in, similar to a bowl?

if so i would imagine it would help out similar to the hemi

(hemispherical head space)

not sure the logic behind it. just an idea
__________________
Shabu is a 2005 Redfire Mustang 4.0L 5 Speed
Flowmaster true dual American Thunder custom exaust, Motive 3.73's, FRPP Limited Slip Diff, KCR Stainless steel headers, Davis Unified Igniton, Bama 93 custom tune, Spec Stage 2 Clutch, JLT CAI, Red Live Wires, Motorcraft platnum plugs, Hurst short throw shifter,Self Fabed Torque Limiters, 245 emblems, Xenon hood scoop, Redline hood lift, GT front bumper cover W/ fogs, Seqential signals, Stainless and red braid hoses Member TSMC Best RT .05
05horse is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 01-06-2009   #4 (permalink)
Stangmansteve is offline Made Member

V6 Member


Joined: Nov 2008
Posts: 257 Threads: 10
 Stangmansteve's Country Flag  View Stangmansteve's 11 photos
Denton   Texas
Send a message via MSN to Stangmansteve Send a message via Yahoo to Stangmansteve
Default

If your raising compression...thats usually for an NA build up.
__________________
Oh Lord forgive the GM Fans...they know not what they do...
Stangmansteve is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 01-06-2009   #5 (permalink)
Joel5.0 is offline Made Member

5.0L Member


Joined: Oct 2005
Posts: 462 Threads: 4
 Joel5.0's Country Flag  View Joel5.0's HomePage
Sabana Grande
Default

Quote:
Originally Posted by lilorange79 View Post
I ordered keith black domed pistons to get my compression to 10:1 with 63 cc heads and was told they would perform poorly....any one have this problem?
1979 mustang w/302
10:1 KB pistons
GT40X turbo swirl heads w/1.7 roller rockers
comp cam 230/236 dur. 520/523 lift
parker funnel web intake
750 holley dbl. pumper
race distributor and cdi w/super coil
long tube headers & flow masters 2.5" exhaust
elec. fan-fuel pump
2500-2800 stall converter
B&M street/strip kit and mega shifter
3.73 gears w/track lock
May I ask what was the explanation given to say they would perform poorly?
__________________
ACRONYMS:
LUK=Let Us Know, GL=Good Luck, LMK=Let Me Know, JIC=Just In Case, BTSTDTRT=Been There Seen That Done That Repaired That, YCYDYP=Your Car Your Dough Your Prerogative and the classic... DILLIGAS=Do I Look Like I Give A S***
1986 GT-X303 cam, 289 heads, 1.72, Holley 700cfm DP, RG 4+1 Trans.
Whatever it Takes
If it Ain't a Ford, why bother
Joel5.0 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 01-06-2009   #6 (permalink)
cindys_sn95 is offline Made Member

5.0L Member


Joined: Nov 2007
Posts: 1,433 Threads: 12
 cindys_sn95's Country Flag  View cindys_sn95's 2 classified ads
Gulfport   Mississippi
Default

yes,please explain..
cindys_sn95 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 01-06-2009   #7 (permalink)
EagleAutosports is offline Forums Moderator

4.6L Member
5.0L Member


Joined: Feb 2007
Posts: 31,096 Threads: 118
 EagleAutosports's Country Flag  View EagleAutosports's 546 photos  View EagleAutosports's 3 classified ads  View EagleAutosports's 1 products for your review  View EagleAutosports's HomePage
Graham   North Carolina
Send a message via MSN to EagleAutosports Send a message via Yahoo to EagleAutosports
Default

I too would like to know why they wouldn't work? I can tell you they'd be fine, based on your parts list they'd work. You just need to be 100+% sure you have enough piston to valve clearance and that they work with the heads you have. Chances are they will, those heads are inline valves so they'd be fine.
__________________
MOOG Certified Tech.
For mods and sound clips, see profile and gallery.


Member: NMRA
Member:
White Mustang Registry #362
Member: Fuzzy Dicer
EagleAutosports is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 01-06-2009   #8 (permalink)
lilorange79 is offline Apprentice

5.0L Member


Joined: Dec 2008
Posts: 53 Threads: 13
 lilorange79's Country Flag  View lilorange79's 18 photos
NW   Oregon
Default

"Do not buy pistons to get your 10:1. You'll have to go with a domed piston and they are not appropriate for your application. There are serious problems with flame propogation in a domed piston and they are only suitable in a forged piston, high RPM application IMO. To get your 10:1 you'll need to reduce the chamber on the heads to 55cc, use a .040 ish head gasket, and have a 0 dech block. This is assuming you get a piston with 6cc's in the valve reliefs. You may be able to find one with 4cc's and if you can then only take the heads to 57 cc's. "
lilorange79 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply



Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
T5 Conversion will a 1967/68 clutch pedal work suzanne Classic Tech 5 08-30-2008 03:17 PM
Is It Possible To Change Pistons dekoy411 2.3L Tech 7 04-09-2008 12:45 PM
1993 Mustang Cobra Intake on my 1994 Mustang will it work? gtrag94 94-95 Tech 15 03-23-2008 07:11 PM
How does custom tuning work?? Clipperz9 2005+ Mustang GT Tech 5 07-29-2007 06:52 PM
HUGE accident at my work this morning. Pictures Inside. 97 MGT Mustang Lounge 10 10-18-2002 12:35 PM

sponsors

Mustang Photos
Add to Favorites    Link to us    Contact    Directory    Site Rules    Archive    Terms of Use    Privacy    Top Sites    RSS    Meet Our Sponsors    Advertise   
AllFordMustangs is not affiliated with or endorsed by Ford Motor Company. ©Copyright 2002-2010 All Auto Enthusiasts Network

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97