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-   -   Stupid BBC Dart Head Question (https://www.racingjunk.com/forums/showthread.php?t=26672)

MCSS86TA82 12-13-2009 03:19 PM

Stupid BBC Dart Head Question
 
My 86 Monte needed to go on a weight reduction plan so I thought I'd go get a set of aluminum heads. After all you can only do so much with the old cast 049 heads which weigh about as much as the car. So I bought a set of Dart Pro 1's 310cc unassembled. While they are still sitting on my dining room table I noticed that the rocker stud holes go right into the intake runners. This was kind of a shock to me because all the heads I've seen (cast gm's) never had the bottom of the rocker studs sitting inside the runners. Doesn't this cause a problem? I thought I would just trim the stud but I would still be left with cleaning up where the tap runs down into the runner. I was wondering how you guys deal with this.

hammertime 12-13-2009 04:12 PM

Re: Stupid BBC Dart Head Question
 

Originally Posted by MCSS86TA82
My 86 Monte needed to go on a weight reduction plan so I thought I'd go get a set of aluminum heads. After all you can only do so much with the old cast 049 heads which weigh about as much as the car. So I bought a set of Dart Pro 1's 310cc unassembled. While they are still sitting on my dining room table I noticed that the rocker stud holes go right into the intake runners. This was kind of a shock to me because all the heads I've seen (cast gm's) never had the bottom of the rocker studs sitting inside the runners. Doesn't this cause a problem? I thought I would just trim the stud but I would still be left with cleaning up where the tap runs down into the runner. I was wondering how you guys deal with this.

My bmfs are the sameway they take special studs :)

BEAST477 12-13-2009 06:10 PM

My Brodix are the same way.

TheYellaBrick 12-13-2009 07:09 PM


My crew chief takes a 'special' stud also !!
:shock: :shock: :shock: :D :D :D :D
OOOOps....wrong forum :oops: :oops: :oops: :oops: :oops:

MEMRACING62 12-13-2009 07:16 PM


Originally Posted by DrivingMissDD

My crew chief takes a 'special' stud also !!
:shock: :shock: :shock: :D :D :D :D
OOOOps....wrong forum :oops: :oops: :oops: :oops: :oops:

BRAGGER!! :P

russ67chevelle 12-14-2009 05:24 AM

lol

MCSS86TA82 12-14-2009 04:03 PM

Got it. Shorter stud length (ouch) on the intake rockers. looks like I just have to live with the intake runner wall that isn't smooth where the stud tap came through. I was thinking (there I go again) there was some magic epoxy that could be used to smooth that up.

cepx111 12-14-2009 09:48 PM

You can use epoxy to fill the gap left by the shorter studs then after it dries you can smooth it down some with fine grit sand paper, the air/fuel mixture will never know the difference.

Cp

hammertime 12-15-2009 05:40 AM

I wish I had a pic of mine, they were smoothed before, it pulled one heli-coil out so I pulled the heads off and had inserts put into them right in the port ... the difference on the track and dyno ... ZERO ...

oldandtired 12-15-2009 07:19 AM


Originally Posted by MCSS86TA82
Got it. Shorter stud length (ouch) on the intake rockers. looks like I just have to live with the intake runner wall that isn't smooth where the stud tap came through. I was thinking (there I go again) there was some magic epoxy that could be used to smooth that up.

Manley Magic Seal Epoxy #40187 is for intake manifolds and intake runners. Goes for $28. I have a kit in stock that I can send you.
Send me PM.
Dave


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