| Intakes and Turkey Pans [message #255875] |
Sat, 19 July 2014 15:51  |
ericswan
Messages: 10
Registered: August 2007
Location: minnesota
Karma: 0
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I am getting 455 TBI back together and am at the intake install stage, for which I'm seeing and reading many different opinions, all of whom seem adamant they are the only way.
First: Turkey pan substitutes: (like one by Modellos) Good idea or not worth it??? I am trashing my turkey pan.
Second: Edelbrock Intake install - Silicone type: J.Bounds says Permatex Ultra Grey. Others say "Right Stuff". AND ... do you let RTV set first before putting manifold on or not ??? (directions on the Ultra-Gray say not to)
Third: Does RTV just go around coolant ports or all ports? (F/R "china walls" a given)
Lastly: Does it matter which side of gasket is up? (This is a "Mr. Gasket")
Thanks,
Paul D.
'73 Sequoia 260
Minnesota
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| Re: Intakes and Turkey Pans [message #255900 is a reply to message #255875] |
Sat, 19 July 2014 20:06  |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Scrap the turnkey tray. Get a set of crossover blocking plates which include the correct thickness gasket from Dick Paterson.
http://www.springfield-ignition.com/
seven zero five-325-4554
Jim K. probably also has them. He stocks just about everything for a GMC.
Read the directions from Dick Paterson and install them All you will need, beside the gasket/blocking plate kit, is a tube of Black RTV that is oxygen sensor safe. Dick will explain this in the enclosed directions.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Intakes and Turkey Pans [message #255920 is a reply to message #255900] |
Sat, 19 July 2014 23:25 |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
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Senior Member |
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Ken Burton wrote on Sat, 19 July 2014 18:06Scrap the turnkey tray. Get a set of crossover blocking plates which include the correct thickness gasket from Dick Paterson.
http://www.springfield-ignition.com/
seven zero five-325-4554
Jim K. probably also has them. He stocks just about everything for a GMC.
Read the directions from Dick Paterson and install them All you will need, beside the gasket/blocking plate kit, is a tube of Black RTV that is oxygen sensor safe. Dick will explain this in the enclosed directions.
It sounds like your engine is out so this will be much easier than hovering over the hatch. Ken is right about Dick Paterson.
I suggest really testing the fit. I ended up taping tiny lengths of plastigauge on each port, top and bottom. Tape it so you can read the thickness in a place there is no tape. I just lightly snugged a couple of bolts on each side. I got 0.006 everywhere on the intake that sealed. I figure with the gasket squeezing to 0.017 I was good.
I am the king of how not to do it. Dick will not lead you astray. Because he was patient with me I will emphasize what I appear to have missed. Check, double check and check again that the ports on the intake are evenly covered with the gasket when the bolt holes are aligned.
Don't use too much RTV. Dick says, "Wipe some on like you were putting it on a baby's bottom." Just a thin, even, coat. Both sides of the gasket.
Then Dick actually showed me, in Amana, how to swing the manifold into place. I understood the one or two bolts cut and notched for a screwdriver as a guide but was still trying to lower the manifold down onto the guides. Dick showed me how to use the guide as a hinge and to swing the far side in an arc down into place. Just like closing a door. It is so sweet.
Check the china wall at both ends for pin holes and bad spots. I had one have a pin hole in the RTV that you could not see with a mirror but it seeped oil.
If you get your gaskets from Dick (or his gaskets from Applied) he is great to talk you through things on the phone if you are having second thoughts. Good man.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
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