Leaking at intake ports.
02-25-2011, 04:33 PM
#1
Leaking at intake ports.
87 Monte w/ 305 4bbl...
I wasn't passing emissions because the original intake manifold had clogged EGR passages. I put on an Edelbrock 3706. I used Ultra black RTV around the front, back and water ports only. The gaskets were the papery steel core set the GM parts counter up the road provided.
I set the timing today and all is well but it's surging. I put a 5/32" rubber hose to my ear and picked up a healthy suckage over the 1/3 intake ports-to-head area. 5/7 is dead quiet there.
I didn't think the ports needed RTV, though maybe that would have masked the problem. How do I check the manifold for trueness when I pull it? I may be able to leave the stocker in my parts washer to see if I can get it unclogged and re-use it and return the Edel. to Jegs if it's bad.
I wasn't passing emissions because the original intake manifold had clogged EGR passages. I put on an Edelbrock 3706. I used Ultra black RTV around the front, back and water ports only. The gaskets were the papery steel core set the GM parts counter up the road provided.
I set the timing today and all is well but it's surging. I put a 5/32" rubber hose to my ear and picked up a healthy suckage over the 1/3 intake ports-to-head area. 5/7 is dead quiet there.
I didn't think the ports needed RTV, though maybe that would have masked the problem. How do I check the manifold for trueness when I pull it? I may be able to leave the stocker in my parts washer to see if I can get it unclogged and re-use it and return the Edel. to Jegs if it's bad.
02-25-2011, 09:54 PM
#2
Supreme Member
Join Date: Oct 2001
Location: NWOhioToledoArea
Posts: 8,113
Likes: 0
Received 5 Likes
on
5 Posts
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: Leaking at intake ports.
RTV forthe china wall and aroudn the water ports, ThreeBond 1194 around the intake ports.
02-26-2011, 10:01 PM
#3
Re: Leaking at intake ports.
I'm thinking Permantex MotoSeal® 1 #29132 as the equivalent semidrying liquid gasket.
ThreeBond 1194 is a semi-drying liquid gasket whose major component is special synthetic rubber. After it is applied and dried, it will form a rubber-like elastic body. Since it excels in padding property, it shows a high sealing effect on bonded surfaces that have poor flatness and large clearance. In addition, it has excellent resistance to water, oil and gasoline.
Permatex MotoSeal 1 is a gray solvent based semi-drying liquid gasket based on an elastomeric, synthetic rubber and designed for excellent gap filling properties. It is designed for use on motorcycles, personal watercrafts, snowmobiles and all- terrain vehicles. MotoSeal 1 resists high temperatures and performs well in a gasoline environment.
02-26-2011, 10:52 PM
#4
Supreme Member
Join Date: Oct 2001
Location: NWOhioToledoArea
Posts: 8,113
Likes: 0
Received 5 Likes
on
5 Posts
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: Leaking at intake ports.
http://www.z1enterprises.com/detail.aspx?ID=178
Last edited by Gumby; 02-26-2011 at 10:56 PM.
Thread
Thread Starter
Forum
Replies
Last Post
