Leak is driving me nuts! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

underdog8704 · 10-23-2006, 05:33 PM

I have a fresh 383 stroker in my 71 C/10. It has an Edelbrock performer intake that wont stop leaking around the back. The intake was on the motor when I bought the truck(and it leaked then) We have had it off and resealed it numerous times with grey RTV sealer with no success. Has anyone had this problem or something similar and found out how to fix it? Thanks for the input.

67ChevyRedneck · 10-23-2006, 05:41 PM

It might have a hairline crack that you can't see.

b&a72 · 10-23-2006, 05:45 PM

I agree I had a performer rpm do the same thing they are aluminum and wear after a while. Save yourself the trouble and go buy a new one.
Billy

70c10 · 10-23-2006, 06:26 PM

Don't feel bad, My RPM intake has been leaking around the center bolts and I can't get them to seal no matter what I try. My intake looks nasty because of it!

cdowns · 10-23-2006, 06:32 PM

Quote:

Originally Posted by 70c10

Don't feel bad, My RPM intake has been leaking around the center bolts and I can't get them to seal no matter what I try. My intake looks nasty because of it!

well if you take the bolts oput clean them with thinner and seal them (NOT SILICONE)with thread sealant like you shoud've on day one they probabally won't leak

stacerbob · 10-23-2006, 07:05 PM

Could it be the distributor??

underdog8704 · 10-23-2006, 07:16 PM

Quote:

Originally Posted by stacerbob

Could it be the distributor??

i was told it could be the distributor. tomorrow i plan on cleaning it up real good again, and watching it while its running, just to get an idea of its exact location. thanks for all the help guys, keep em coming.

RSRXION · 10-23-2006, 10:37 PM

Make sure you've got the round gasket beneath the distributor base. In addition, are you using a PCV valve ? If you are running an engine that has some wear and creates positive internal pressure, the absence of a vent ( positive crankcase ventiliation PCV valve ) will cause the engine to leak at it's weakest point. Usually around the manifold or oil pan. JMHO, Dean

**LockDoc** · 10-23-2006, 11:04 PM

I was having the same problem until I quit using the RTV sealant. A guy gave me a tube of sealant and told me if I used it instead of the RTV I wouldn't have any more problems. He was right. I can't remember the name of it but I will look in the morning and post it.

Same thing with the water neck.

LockDoc

Olden Days · 10-23-2006, 11:18 PM

back there is stock location for oil pressure sender or tubes. Make sure that is not the culprit

70c10 · 10-24-2006, 08:59 AM

Quote:

Originally Posted by cdowns

well if you take the bolts oput clean them with thinner and seal them (NOT SILICONE)with thread sealant like you shoud've on day one they probabally won't leak

They were sealed that way when the cam was installed but started leaking a year later. I even tried brand new intake bolts and coated them with the white liquid teflon thread sealant but it won't stop it.

It's the 4 center bolts.

cdowns · 10-24-2006, 09:40 AM

try bead blasting the bolts(thread area) / it sometimes give the thread sealant a better grip on the surface also a little shot of brake cleaner into the holes to clean b-4 inserting bolts and letting thread sealer set up 15-20 minutes b-4 inserting bolts

underdog8704 · 10-24-2006, 02:02 PM

Quote:

Originally Posted by RSRXION

In addition, are you using a PCV valve ? If you are running an engine that has some wear and creates positive internal pressure, the absence of a vent ( positive crankcase ventiliation PCV valve ) will cause the engine to leak at it's weakest point. Usually around the manifold or oil pan. JMHO, Dean

ya, i am already running a pcv valve. thanks again guys for all the input.

**LockDoc** · 10-24-2006, 02:08 PM

Quote:

Originally Posted by LockDoc

I was having the same problem until I quit using the RTV sealant. A guy gave me a tube of sealant and told me if I used it instead of the RTV I wouldn't have any more problems. He was right. I can't remember the name of it but I will look in the morning and post it.

Same thing with the water neck.

LockDoc

The sealer he gave me to use is Locktite #2 Gasket Sealer

LockDoc

70rs/ss · 10-24-2006, 03:41 PM

Ultra copper gasket sealer/maker, it is the best stuff made. Put a line front and rear, make sure to push it inthe the corners where the head meets the block. Set the intake down tighten the bolts, wait overnight and no leaky!! Be sure to clean the rails so it sticks the intake as well. It dries pliable but tough as nails and hold up to extreme heat. Its the only thing I use. It'll fix the four leaking bolts as well, but I think it might be a gasket issue, some intakes require a specific gasket to cover everything up and to not get any leaks.

Longhorn Man · 10-24-2006, 07:43 PM

The Right Stuff.
You use this stuff, and you'll sooner scrape the alluminum off the sealant instead of the sealant off the alluminum. Use that and make sure you get a bead thick enough and it will seal
make sure all surfaces are clean. scrape the old stuff off with a razor blade and follow with brake clean, place the intake down straight... once it touches, it better be straight, move it fore or aft, and it'll probably leak.

10-23-2006, 05:33 PM	#1
underdog8704 NCStroker Join Date: Aug 2006 Location: NC Posts: 89	Leak is driving me nuts! I have a fresh 383 stroker in my 71 C/10. It has an Edelbrock performer intake that wont stop leaking around the back. The intake was on the motor when I bought the truck(and it leaked then) We have had it off and resealed it numerous times with grey RTV sealer with no success. Has anyone had this problem or something similar and found out how to fix it? Thanks for the input.

10-23-2006, 05:45 PM	#3
b&a72 Active Member Join Date: Oct 2006 Location: Mesa, AZ Posts: 682	Re: Leak is driving me nuts! I agree I had a performer rpm do the same thing they are aluminum and wear after a while. Save yourself the trouble and go buy a new one. Billy

10-23-2006, 06:26 PM	#4
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,856	Re: Leak is driving me nuts! Don't feel bad, My RPM intake has been leaking around the center bolts and I can't get them to seal no matter what I try. My intake looks nasty because of it! __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

10-23-2006, 07:05 PM	#6
stacerbob BODY SHOP SUPPLIES INC. Join Date: Oct 2006 Location: NE Arkansas Posts: 198	Re: Leak is driving me nuts! Could it be the distributor??

10-23-2006, 10:37 PM	#8
RSRXION Senior Member Join Date: Jun 2006 Location: Arkansas Posts: 227	Re: Leak is driving me nuts! Make sure you've got the round gasket beneath the distributor base. In addition, are you using a PCV valve ? If you are running an engine that has some wear and creates positive internal pressure, the absence of a vent ( positive crankcase ventiliation PCV valve ) will cause the engine to leak at it's weakest point. Usually around the manifold or oil pan. JMHO, Dean __________________ "They that give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." Ben Franklin

10-23-2006, 05:41 PM	#2
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Leak is driving me nuts! It might have a hairline crack that you can't see. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

10-23-2006, 11:04 PM	#9
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,771	Re: Leak is driving me nuts! I was having the same problem until I quit using the RTV sealant. A guy gave me a tube of sealant and told me if I used it instead of the RTV I wouldn't have any more problems. He was right. I can't remember the name of it but I will look in the morning and post it. Same thing with the water neck. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - Last edited by LockDoc; 10-23-2006 at 11:05 PM.

10-23-2006, 11:18 PM	#10
Olden Days Living In The Past Join Date: Nov 2003 Location: Rockies Posts: 709	Re: Leak is driving me nuts! back there is stock location for oil pressure sender or tubes. Make sure that is not the culprit

10-24-2006, 09:40 AM	#12
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Leak is driving me nuts! try bead blasting the bolts(thread area) / it sometimes give the thread sealant a better grip on the surface also a little shot of brake cleaner into the holes to clean b-4 inserting bolts and letting thread sealer set up 15-20 minutes b-4 inserting bolts __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

10-24-2006, 03:41 PM	#15
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,270	Re: Leak is driving me nuts! Ultra copper gasket sealer/maker, it is the best stuff made. Put a line front and rear, make sure to push it inthe the corners where the head meets the block. Set the intake down tighten the bolts, wait overnight and no leaky!! Be sure to clean the rails so it sticks the intake as well. It dries pliable but tough as nails and hold up to extreme heat. Its the only thing I use. It'll fix the four leaking bolts as well, but I think it might be a gasket issue, some intakes require a specific gasket to cover everything up and to not get any leaks.

10-24-2006, 07:43 PM	#16
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Leak is driving me nuts! The Right Stuff. You use this stuff, and you'll sooner scrape the alluminum off the sealant instead of the sealant off the alluminum. Use that and make sure you get a bead thick enough and it will seal make sure all surfaces are clean. scrape the old stuff off with a razor blade and follow with brake clean, place the intake down straight... once it touches, it better be straight, move it fore or aft, and it'll probably leak.



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