Re: big block head gaskets
[Re: jamesc]
#1364291
01/04/13 11:17 PM
01/04/13 11:17 PM
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Joined: Jan 2006
Posts: 587 IL . usa
cjs69mope
mopar
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mopar
Joined: Jan 2006
Posts: 587
IL . usa
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Question do you guys need to put sealer in the coolant to get heads to stop weeping ? I have read a lot about this. Not sure i want to deal with leaks. My car is a lot of trouble to change gaskets with solid mount and 4 speed with big tube headers!(Not a fun change) Because i run perma torque on my motor but would like to step up to small 50-100 shot of nos but don't trust the the perma torque. also compression and block over hang is a problem on my block with the 1009. Sorry i was not trying to hijack.
1969 Dodge Charger
1969 Dodge Superbee
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Re: big block head gaskets
[Re: jimmysarrow]
#1364292
01/05/13 12:28 PM
01/05/13 12:28 PM
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Joined: Feb 2008
Posts: 715 Central TEXAS!!!!
sr4440
super stock
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super stock
Joined: Feb 2008
Posts: 715
Central TEXAS!!!!
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if your a member of the"pro shop" summit has the Cometic Head Gaskets C5464-040 for $87 with a $10 summit bucks offer.
Joe
Without Data, you’re just another guy with an opinion.
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Re: big block head gaskets
[Re: Cab_Burge]
#1364294
01/05/13 04:13 PM
01/05/13 04:13 PM
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Joined: Jan 2003
Posts: 21,083 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,083
Niles , Ohio
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My 440 with aluminum heads and 12.5 domes I run FelPro Marine gaskets.They have been on over 4 years and it street/strip.No leaks.I couldnt use the 1009s as they hung into the chamber.The marines didnt.Cost like 40 bucks a side.Rocky
Chrysler Firepower
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Re: big block head gaskets
[Re: jimmysarrow]
#1364299
01/05/13 07:32 PM
01/05/13 07:32 PM
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Joined: Aug 2003
Posts: 43,292 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,292
Bend,OR USA
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Quote:
Cab, yes that is what the mfg. recommends for the finish, but does anybody do this? I have never done this and alot of mopar racers i race with never do this just spray copper coat and install, and i have never heard of any gasket problems. Maybe someone will chime in that has had leaks.
The first block that I bought and use Cometic head gaskets on was a new Mopar 426 street Hemi replacemnet block that was a pump gas 10:71 supercharged carbureted motor that I did not have the decks done before running it on the dyno It leaked water to the outside of the motor, none inside , on all four corners, embarrassing I had to take the motor apart and have it deck to get the proper finish after calling Cometic on that. That motor had a set of new Stage V aluminum heads that had a fairly smooth finish on the head surface but I went ahead and had them surfaced to Cometic specs, no leaky after that I built another low deck stroker motor two years ago and had the heads and block finished for the Cometics and it didn't leak on the dyno with the Mr Gasket MLS head gaskets
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: big block head gaskets
[Re: Wicked49670dart]
#1364302
01/06/13 01:48 AM
01/06/13 01:48 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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I am curious as to the thickness of the head gasket you are using ? I mean I ran cometic gaskets on my old 440 because I needed to drop the comp to 10.0 and with the milled 906 heads I used I needed a .074 head gasket so thats why I went with the Cometic. The Cometics worked fine for it. But on my new eng with aluminum heads and close to zero deck I just use the Felpro's at .039 for good quench and they hold up great. But I only run 10.6 comp. So I guess my question is do the Felpro's hold up good at 13.5 comp and if you run a .039 gasket do you need to use the Cometic at 13.5 comp ? Ron
Last edited by 383man; 01/06/13 01:51 AM.
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