MoparFins

Techical Discussions => Tech- - FUEL => Topic started by: Stan Paralikis on November 11, 2008, 01:20:26 AM

Title: Insulation
Post by: Stan Paralikis on November 11, 2008, 01:20:26 AM
While dismantling the 440 that's in The Nyb, I saw that there was insulation stuffed in under the intake manifold.
 
1.  Was this factory or did the former owner stuff it in there?
 
2.  Whadaya think about insulating the intake?
Title: Insulation
Post by: Stitcherbob on November 11, 2008, 04:46:41 AM
Stock.....kept heat from the manifold and mostly kept the noise from the lifter valley down, as it was only covered by the thin tin gasket pan....

Title: Insulation
Post by: Leaburn Patey on November 11, 2008, 07:07:05 AM
The insulation is factory.Prevents heat soak.
Without it,the fuel in the float bowl would boil causing hard hot starts.
Title: Insulation
Post by: Rich on November 11, 2008, 07:31:09 AM
Put the insulation back in if you intend on using a low rise dual plane intake (like the stock unit or an Edelbrock performer), but if your going to use a high rise single plane manifold you won't need it.
Title: Insulation
Post by: Snotty on November 11, 2008, 08:56:16 AM
I just read in a Mopar magazine that if you are going to modify the intake, or use a different carb, you should cut off/cover up the heat riser crossover on the intake.  Since I do not have the insulation any more, and get heat soak after a long drive, I might just do that.  But, are there "plates" available to cover these up?  I have never looked.
 
Also, I've always tossed the insulation.  By the time I've taken off a manifold that stuff is so bad - ripped or burnt - that I've not wanted to put it bacK on.  Question: is that stuff available new?
Title: Insulation
Post by: Stan Paralikis on November 11, 2008, 11:58:18 AM
Quote from: Snotty
Question: is that stuff available new?
 
Looks like Home Depot house insulation to me....
Title: Insulation
Post by: Steve on November 11, 2008, 12:53:29 PM
It's just insulation wrapped in tin foil.  You can make new ones or rewrap yours if it's for looks.
 
Pam the foil so it doesn't stick (http://www.moparfins.com/forum/smileys/smiley36.gif)
Title: Insulation
Post by: Stan Paralikis on November 11, 2008, 01:45:00 PM
So, what everone is  saying is, the world as we know it will come to an apocolyptic end if I don't use insulation.
 
Commando12008-11-11 18:45:41
Title: Insulation
Post by: Snotty on November 12, 2008, 11:17:15 AM
Quote from: Commando1
So, what everone is  saying is, the world as we know it will come to an apocolyptic end if I don't use insulation.
 
 
I'm not using the stuff.  I do have a heat problem after a long drive.  The fuel will evaporate from the carb, especially in the summer.  But then, it can hit 115* here!  I am going to check into capping off those intake heat-exchange passages.  It doesn't get cold enogh here to need them in the winter.
Title: Insulation
Post by: Ken on November 12, 2008, 04:55:44 PM

Quote from: Snotty
I just read in a Mopar magazine that if you are going to modify the intake, or use a different carb, you should cut off/cover up the heat riser crossover on the intake.  Since I do not have the insulation any more, and get heat soak after a long drive, I might just do that.  But, are there "plates" available to cover these up?  I have never looked.
 
Scott, just get a short piece of Corning fiberglass insulation, and make two pads out of it, 'cause it is the exact same stuff.

Title: Insulation
Post by: Ken on November 12, 2008, 04:56:53 PM
BTW, I noticed I still have mine in place...which will change once I do the engine upgrades (http://www.moparfins.com/forum/smileys/smiley15.gif)

Title: Insulation
Post by: Stitcherbob on November 12, 2008, 06:22:27 PM
The crossover can be blocked with thin stainless steel shim stock

Title: Insulation
Post by: Snotty on November 13, 2008, 10:09:20 AM
[/QUOTE]
 
Moe, I don't want the stuff.  It's an aesthetic thing, and I think that stuff looks lousy sticking out under the mainfold.  I like a clean, empty valley pan.
 
I like the magazine's suggestion of capping off the cross-over at the heads.   But, I can imagine a small plate there causing a mounting problem, so I wonder how they propose doing so.  I don't have the heat riser anymore, so there's no forced exhaust going through my manifold, but exhaust gas will still pass through in normal conditions. 
 
HAs anyone capped these passages off?  If so, how? 
Title: Insulation
Post by: Snotty on November 13, 2008, 10:10:34 AM
Quote from: stitcherbob
The crossover can be blocked with thin stainless steel shim stock
 
Ah, if only I had read further....
 
Do you have pictues Bobby?  Do you cut a piece and place it in place?
Title: Insulation
Post by: Stan Paralikis on November 13, 2008, 04:06:54 PM
[/QUOTE]
 
Moe, I don't want the stuff.  It's an aesthetic thing, and I think that stuff looks lousy sticking out under the mainfold.  I like a clean, empty valley pan.
 
I like the magazine's suggestion of capping off the cross-over at the heads.   But, I can imagine a small plate there causing a mounting problem, so I wonder how they propose doing so. 
 
[/QUOTE]
 
I used the intake manifold gaskets from Fel-pro (MS96000) that block the cross over.
Title: Insulation
Post by: Snotty on November 14, 2008, 10:40:18 AM
Quote from: Commando1
 
 
Oh, what are those?  A valley-pan with the holes plugged?  I'll have to check them out. 
 
Thanks.
Title: Insulation
Post by: Snotty on November 14, 2008, 10:43:59 AM
Stan, I just looked these up on Summitt's site; they still have the cross-over opening.  At least in the picture they do.  I want to close that oipening.
Title: Insulation
Post by: Stan Paralikis on November 14, 2008, 02:50:50 PM
Quote from: Snotty
Stan, I just looked these up on Summitt's site; they still have the cross-over opening.  At least in the picture they do.  I want to close that oipening.
 
Well Snotty, we now have a mystery on our hands.
I went back and rechecked my packing list from Rock Auto and indeed it was the MS96000, just like I ordered.
 
The gasket had the heat riser block and it was creased and perforated in such a way that it allowed you to remove the passage block if you wanted.
 
It's installed now and I have no way of showing you the gasket.  I dunno what to say.  (http://www.moparfins.com/forum/smileys/smiley5.gif)
Title: Insulation
Post by: Snotty on November 15, 2008, 09:16:40 AM
It may be that Summitt uses a "stock photo" which has the open hole.  I could always order one and if it's wrong, send it back.  Thanks for the lead.
Title: Insulation
Post by: Rich on November 15, 2008, 09:17:48 PM
I blocked mine off by cutting out little pieces from the OLD valley pan gasket and glueing them on with some super tack gasket sealer and let them dry overnight. Bolted everything back togother and all worked well.
Felpro does make a gasket with the crossover blocked off, but it can be difficult to find.
Title: Insulation
Post by: Ken on November 16, 2008, 11:27:45 AM



Snotty, here's the Fel-pro #'s for B and RB valley pan gasket with the heat cross-over blocked;
On the Summit site, look for FPP-1214 or FPP-1215, respectively.

Those are probably re-packed as Mopar Performance P4286825 (B) and P4286826 (RB).
There's the info you seek (http://www.moparfins.com/forum/smileys/smiley2.gif)
Moesy2008-11-16 16:36:16
Title: Insulation
Post by: Snotty on November 17, 2008, 09:21:50 AM
Oooo, seek and Ye shall find!  Thanks Moe!
Title: Insulation
Post by: Steve on November 17, 2008, 04:38:54 PM
Oh yea Wise one.  You didn't know that????   Sheeesh!  What kind of parts stores do you have out there. . .
 
Ohhh  That's right.  California (http://www.moparfins.com/forum/smileys/smiley36.gif) (http://www.moparfins.com/forum/smileys/smiley36.gif) (http://www.moparfins.com/forum/smileys/smiley36.gif)
Title: Insulation
Post by: Snotty on November 18, 2008, 08:22:20 AM
Quote from: POLARACO
 
Pick on California, eh?  And where exactly did that expansion valve for your '62 come from, hmmm??
 
Honestly, I've never looked into the possibility that the valley pan might have the cut-off.  I'm glad, because that would not cause a spacing problem that putting in some fabricated piece of metal would have.
 
I need to get one of these.
 
Scott