Fastburn rocker stud holes into intake runner 8 for 8! - Team Camaro Tech
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post #1 of 3 (permalink) Old May 1st, 04, 04:34 PM Thread Starter
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John
 
Join Date: Jan 2002
Location: Central Minnesota
Posts: 343
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Thanks to GMJIM I was able to correct this problem before it caused damage. Some time ago there was a long post about the rocker stud mounting holes on the fastburn 385. When they drilled & tapped them they created a hole into the intake runner. This resulted in oil being sucked into the runner and fouling the intake valve. As I recall Jim only had a hole in the #6 cyl. intake stud. Well I checked mine today and I was 8 for 8!! Every stud mount had a hole right into the intake runner and NO sealant on the stud threads. None of the exhaust rocker studs had a hole at the bottom. I've included a photo of the hole at the #6 intake runner. You can see the tang from the helicoil and the black area which leads to the intake runner. GMJIM, can't thank you enough for this tip and the specifics on how to fix it. This website just saved me many problems and $$$$$. I bought my fastburn in January of 2003 but haven't fired it yet. Hope to fire it in a couple of weeks.

Rocker Stud Hole Photo

This is so much fun I can't believe it's legal.
69 Camaro- Fastsburn 385 crate, 200-4R
69 Chevelle SS 396 4 Speed

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post #2 of 3 (permalink) Old May 2nd, 04, 06:17 AM
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Al
 
Join Date: Nov 2002
Location: Vancouver, USA
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Mine were assembled w/o sealant as well, and thanks to GMJim, they are sealed and ready to go.

I believe on the Fastburn heads ALL of the intake studs are tapped into the intake runner - mine are.

I don't thinks it's uncommon for those holes to be tapped into the intake runner on other brands as well, but what is GM thinking by not using sealant??


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post #3 of 3 (permalink) Old May 2nd, 04, 11:22 AM
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Jim
 
Join Date: Nov 2002
Location: Ontario & Oceanside CA.
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Thanks for the ataboy guys!
This site has been a source for very valuable info for me too. Nothing like experience for a teacher. On the fast burn heads John. All 8 intake studs were drilled right through on mine too. I think it's quite common to find this on a lot of heads. On mine it was all but #6 that leaked oil into the port. What a mess!! 1/4" oil build up on the valves. But as I said in earlier posts, I'm concerned about the Heli coil hanging down into the port too. I replaced all 16 Heli coils with Time Serts and sealed them with teflon sealer.
Thanks
Jim [img]graemlins/thumbsup.gif[/img]
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