Engine Upper Intake seal concerns (pics)

89GTRound2 · Mar 15, 2022

Ok,

Trick flow lower to Flotek heads.
Using the felpros with the extra sealing bead.
These heads and lower intake were mated up prior to me pulling it all apart with no coolant or other leaks.
I am probably just nervous, but I am concerned that the little gap between the head and lower intake is going to leak. Visually looks to big to me... I have used feeler gauges back in there to make sure.it doesn't just go on into the water jacket. Which it does not. Any one have any pictures of their build from these angles? Wanting to make sure I don't have an immediate problem... Thanks everyone.

90trunk · Mar 15, 2022

I'd pull out the Fel-Pro end gaskets and use your favorite brand of RTV to seal up the china wall ends. You could mock it up and see if that fits better like that.

Mustang5L5 · Mar 16, 2022

That gap looks excessive. How do the other corners fit?

For test fitting purposes, pull out the blue end seals. Does it sit better?

I've always used the same explorer style intake seals with the blue end gaskets. I've never had a problem getting it to seal at all.

89GTRound2 · Mar 16, 2022

Mustang5L5 said:
That gap looks excessive. How do the other corners fit?

For test fitting purposes, pull out the blue end seals. Does it sit better?

I've always used the same explorer style intake seals with the blue end gaskets. I've never had a problem getting it to seal at all.

I agree, I've used a flashlight looking for any sign of gaps. I think it is sealed. I've just heard so many people say not to rtv the water ports. I think I may be doing that now.... I checked everything for straightness. No idea...

General karthief · Mar 16, 2022

I can't speak for anyone but me and I've used rtv on the water jackets since like forever, maybe the gasket makers developed better gaskets that it may not be needed but I will continue to do it.

90sickfox · Mar 16, 2022

Ibuse sealant on all my water ports. Been doing it forever, too.

Advance sells an extra thick intake gasket that works for issues where the gap is excessive. Its a paper gasket though. It would need to be trimmed with an exacto knife to fit a bigger port. I think they are only available in stock port size but I've used them on a bunch of different engine combos that had issues with sealing. They are 1/16 thick. Never had issues with them at all....they just tear in half when it's time to pull the intake back off.

89GTRound2 · Mar 16, 2022

I like the idea of getting thicker gaskets... What RTV are you fellas using to seal up the ports? Just ultra black or something different?

Mustang5L5 · Mar 17, 2022

I used the same gaskets on my intake.

I did seal around the water ports. I ran the blue China rails completely dry. put a dab of RTV in the corners and a light film around each coolant port. I smoke tested and pressure tested the coolant system and it appears it all sealed up well.

The factory installs those gaskets completely dry on production engines. Tons of Ford explorers/mountaineers left the factory on the blue end gaskets (which i think are better than the older cork seals) You should be able to do the same. The rtv aroujd the coolant ports is just some insurance. Don’t overdue it though and compress it into the water port.

90sickfox · Mar 17, 2022

I like using " right stuff " on the China rails with the cork gaskets. The cork gaskets ends need to be trimmed a little so the don't try to push out while curing. On the coolant ports I use a thin smear of gray silicone that's meant for parts in contact with coolant. It's got a picture of a water pump on the pack. Both are made by Permatex. I apply it to the coolant port and on the gasket area where it will contact the intake. I use studs made from cut off bolts to help drop the intake down flat.

89GTRound2 · Mar 17, 2022

90sickfox said:
I like using " right stuff " on the China rails with the cork gaskets. The cork gaskets ends need to be trimmed a little so the don't try to push out while curing. On the coolant ports I use a thin smear of gray silicone that's meant for parts in contact with coolant. It's got a picture of a water pump on the pack. Both are made by Permatex. I apply it to the coolant port and on the gasket area where it will contact the intake. I use studs made from cut off bolts to help drop the intake down flat.

Ah ok. So are you using grey permatex on both the head side and the intake side of the water ports? I assumed but curious.
I just purchased arp intake studs in hopes that helps me guide this thing back down.

89GTRound2 · Mar 17, 2022

89GTRound2 said:
Ah ok. So are you using grey permatex on both the head side and the intake side of the water ports? I assumed but curious.
I just purchased arp intake studs in hopes that helps me guide this thing back down.

I should clarify head side of gasket and intake side of gasket along with the head ports and intake ports.

vristang · Mar 17, 2022

Rtv black on head and intake, just around the coolant ports. Build the china wall a little taller with a bead of black rtv. Drop it all together.

I used the silicone rail seals for a while, but even those can slip/shift during install… so in the end I had better luck with just silicone.

Some might say I use ‘excessive’ amounts of brake cleaner to prep the surfaces though, lol.

89GTRound2 · Mar 17, 2022

vristang said:
Rtv black on head and intake, just around the coolant ports. Build the china wall a little taller with a bead of black rtv. Drop it all together.

I used the silicone rail seals for a while, but even those can slip/shift during install… so in the end I had better luck with just silicone.

Some might say I use ‘excessive’ amounts of brake cleaner to prep the surfaces though, lol.

Man, it sure kills me to take all this apart ... Haha thanks for the input. So your saying no "right stuff" just rtv black?

vristang · Mar 17, 2022

Not sure I’ve ever considered what the difference between the 2 might be?
I just get the little black toothpaste looking tubes, lol

89GTRound2 · Mar 17, 2022

vristang said:
Not sure I’ve ever considered what the difference between the 2 might be?
I just get the little black toothpaste looking tubes, lol

Lol got it.

90sickfox · Mar 18, 2022

Right stuff will work but is hell to clean off if you have to go back in. I've used it a bunch of times. I just found that the gray silicone made for coolant works better. Right stuff goes on anything that has to seal oil.

I do a this smear of sicone on both sides of the gasket. ( head and intake side ). I don't use any silicone on the intake ports or that part of the gasket.

89GTRound2 · Mar 20, 2022

Well... I feel like the casting gave me a scare that really wasn't an issue.... Check this out. It has that little cut out on all corners causing me to think it had to much play. Thoughts?

Engine Upper Intake seal concerns (pics)

89GTRound2

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90trunk

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Mustang5L5

That is…until I whipped out my Bissell

89GTRound2

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General karthief

wonder how much it would cost to ship you a pair

90sickfox

Wasn't a pretty sight...and I've got big hands

89GTRound2

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Mustang5L5

That is…until I whipped out my Bissell

90sickfox

Wasn't a pretty sight...and I've got big hands

89GTRound2

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89GTRound2

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vristang

89GTRound2

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vristang

89GTRound2

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90sickfox

Wasn't a pretty sight...and I've got big hands

89GTRound2

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Engine Upper Intake seal concerns (pics)

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That is…until I whipped out my Bissell

New Member

wonder how much it would cost to ship you a pair

Wasn't a pretty sight...and I've got big hands

New Member

That is…until I whipped out my Bissell

Wasn't a pretty sight...and I've got big hands

New Member

New Member

New Member

New Member

Wasn't a pretty sight...and I've got big hands

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