Re: Anyone use Flatout rubber coated copper head gaskets?
[Re: Kern Dog]
#1465929
07/10/13 04:15 PM
07/10/13 04:15 PM
|
Joined: Aug 2003
Posts: 43,228 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
|
I would change the cam and degree it so it is advance 3 to 5 degrees on the intake side and try that before lowering the compression ratio I ran 10.78 to 1 comp. ratio on my Duster motor with the last set of heads(76 CC Indy SR) on the motor before I sold the car, it ran great( 9.96 at 134.7 MPH at 3450 Lbs through the muffs) on 91 octane Oregon non ethanol pump swill I had a set of 84 CC Eddy RPM heads on it also, they had 10.29 to 1 compression, the car ran low tens with them on it on pump gas That motor had no signs of detontation ever on either set up What spark plug and heat range are you running now and how much total timing are you running ? I think your location is at or close to sea level, correct?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: Anyone use Flatout rubber coated copper head gaskets?
[Re: Cab_Burge]
#1465930
07/10/13 04:37 PM
07/10/13 04:37 PM
|
Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
OP
Striving for excellence
|
OP
Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
|
Quote:
What spark plug and heat range are you running now and how much total timing are you running ? I think your location is at or close to sea level, correct?
As is, I'm running Champion RC9YCs. I had the 12s like Edelbrock suggests but the engine had consistent run-on until I switched to the colder plug. I am just barely above seal level. I am told that the MP distributor has an aggressive timing curve. I'm at 17 initial, 31 total in really early, like under 2500. It knocks at WOT on 91. A mix of 110 and 91 cures the knock, but I want to make it street friendly. Some of the responses I'm getting elsewhere suggest to skip the head gasket swap and concentrate on the timing curve and a cam swap. I just wish that I knew someone that had a near identical engine combo so I could get a better idea of which cam would work. 4000 70 Charger, stock body, 295 tire, 3.91 gear with a Gear Vendors OD. 440, .030 over 4.35 bore. Ross Flat Top pistons, 6 cc valve reliefs, .017 in the hole at TDC. Edelbrock heads, 84 ccs UNported, .039 head gasket. .056 quench distance. 292/509 cam installed straight up, 1.6 rockers, 3/8" pushrods. 850 Demon VS, 85/92 jets, 3.5 PV 2" TTI headers, 2 1/2" exhaust
|
|
|
Re: Anyone use Flatout rubber coated copper head gaskets?
[Re: Kern Dog]
#1465931
07/10/13 08:49 PM
07/10/13 08:49 PM
|
Joined: Jan 2007
Posts: 437 south central pa
bdaz smblk
mopar
|
mopar
Joined: Jan 2007
Posts: 437
south central pa
|
Please don't waist your money on the rubber coated flatout gaskets.I used them one time and after about 15-20 passes the rubber coating came off and they started leaking water.
3120lb, small block, 10.5" tire, NA, through exhaust, full int, WITH 83/4 REAR, 9.0 at 150mph
|
|
|
|
|