Can't get Air Gap intake to seal
06-23-2018, 09:04 PM
#101
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Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Can't get Air Gap intake to seal
Were you able to get the intake to seal yet?
06-23-2018, 10:56 PM
#102
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Car: 1985 Pontiac TransAM
Engine: 400SBC 24x conversion
Transmission: T700r Stage2 Shiftkitted
Axle/Gears: 2.77 9 Bolt
Re: Can't get Air Gap intake to seal
Yep.
This maybe not work for everyone (or anyone) but it worked for me:
1. Purchased Procomp gaskets that were around 0.100" thick.
2. Sprayed gaskets with copper adhesive spray
3. Put a small bead of semi hardening sealant around each intake port
4. Put water passage sealant on the coolant passages
5. Ran a thick bead of RTV sealant across the china walls and corners
6. Placed the gaskets on the heads and pressed lightly to get them to stay in place.
7. Put water sealant on top of gaskets for coolant passages
8. Put another thing layer of semi hardening sealant on intake ports of gaskets.
9. Let sit for 3 minutes, and then placed the intake on top.
10. Lined up all the bolts and put them in loose with water sealant on the front bolts, rtv on the midddles, and water sealant on the rears and tighten to 5ftlb.
Left for 3 hours, then tightened down in sequence to 20ftlb.
Now have 40-50kpa on the MAP at idle, and a steady and solid 15"hg vacuum gauage reading
I'll probably be screwed if I ever have to take it off again, but for now I'm happy.
This maybe not work for everyone (or anyone) but it worked for me:
1. Purchased Procomp gaskets that were around 0.100" thick.
2. Sprayed gaskets with copper adhesive spray
3. Put a small bead of semi hardening sealant around each intake port
4. Put water passage sealant on the coolant passages
5. Ran a thick bead of RTV sealant across the china walls and corners
6. Placed the gaskets on the heads and pressed lightly to get them to stay in place.
7. Put water sealant on top of gaskets for coolant passages
8. Put another thing layer of semi hardening sealant on intake ports of gaskets.
9. Let sit for 3 minutes, and then placed the intake on top.
10. Lined up all the bolts and put them in loose with water sealant on the front bolts, rtv on the midddles, and water sealant on the rears and tighten to 5ftlb.
Left for 3 hours, then tightened down in sequence to 20ftlb.
Now have 40-50kpa on the MAP at idle, and a steady and solid 15"hg vacuum gauage reading
I'll probably be screwed if I ever have to take it off again, but for now I'm happy.
06-24-2018, 07:31 PM
#103
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iTrader: (1)
Join Date: Feb 2017
Location: Meriden, CT 06450
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428 Posts
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Can't get Air Gap intake to seal
Great to hear. Thanks for following up.
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