Intake gasket @ ported heads ???
#2465268
03/12/18 04:08 PM
03/12/18 04:08 PM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
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Puyallup, WA
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Putting my top end back together. Stealth heads are now CNC ported. In the past, the stock stamped valley pan worked just fine. Now the port windows are larger, so the stamped valley pan is out (I believe). So I’m soliciting experience from what others have done.
My assumption is to cut the intake gasket portion of stock valley pan off, leaving a short tab at the bend. Then silicone the joint from that to paper gaskets cut to match the port. (????). Am I close?
What have others had success with?
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2465345
03/12/18 06:47 PM
03/12/18 06:47 PM
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Joined: Mar 2009
Posts: 2,458 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
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Sydney,Australia
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I have the same issue , CNC Stealths .For the past few years I have ported the valley pan openings and gaskets to suit . On the new 505 I am still getting a little oil pulling through into intake on 1 cylinder , didn't have this on the 440 , 2nd time around. I have bought Andys batwings and a selection of Superformance gaskets plus the Trickflow valley plate . I will be fitting these in the next couple of months , earlier maybe . I think the ports on the batwings may need to be opened a little . I know against the Felpro intake gaskets the Source port is bigger.
Tex
PS : I tried cutting the pan like you suggest , no luck keeping it sealed
Last edited by tex013; 03/12/18 06:48 PM.
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2465358
03/12/18 07:10 PM
03/12/18 07:10 PM
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Joined: Oct 2015
Posts: 570 UK
rb446
mopar
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mopar
Joined: Oct 2015
Posts: 570
UK
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Putting my top end back together. Stealth heads are now CNC ported. In the past, the stock stamped valley pan worked just fine. Now the port windows are larger, so the stamped valley pan is out (I believe). So I’m soliciting experience from what others have done.
My assumption is to cut the intake gasket portion of stock valley pan off, leaving a short tab at the bend. Then silicone the joint from that to paper gaskets cut to match the port. (????). Am I close?
What have others had success with? Yes thats exactly what we did many moons ago on my 440SP motor when we damaged the intake part of the tray. Cut it off leaving just enough to go under the paper gasket slightly, no silicon, worked a treat no probs, race car only.
Last edited by rb446; 03/12/18 07:12 PM.
1969 'Cuda 446ci, best 9.96@133.9 in 1990 1971 340 'Cuda, best 11.01@122.8 in 1987
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2465398
03/12/18 08:45 PM
03/12/18 08:45 PM
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Joined: Mar 2009
Posts: 2,458 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,458
Sydney,Australia
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Just turned up . Looks pretty neat with a drop out centre
Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2465592
03/13/18 01:14 AM
03/13/18 01:14 AM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
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For those who have “ported” the pan gasket windows, how did you go about this?
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2465622
03/13/18 02:33 AM
03/13/18 02:33 AM
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Joined: Mar 2009
Posts: 2,458 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,458
Sydney,Australia
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For those who have “ported” the pan gasket windows, how did you go about this? Dremel or carbide bit Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2465626
03/13/18 03:05 AM
03/13/18 03:05 AM
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Joined: Aug 2003
Posts: 43,127 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,127
Bend,OR USA
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Aircraft tin snips The brand name escape me now, I can look in the tool box for the name of them in the morning if you want it It is a common brand name tool, nothing exotic I did try a high speed dremel air cutter tool once with a fine carbide bit and the vibrations and noise made me use the snips instead
Last edited by Cab_Burge; 03/13/18 03:06 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2465824
03/13/18 03:47 PM
03/13/18 03:47 PM
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Joined: Jan 2003
Posts: 1,807 Mopar Country, Mi
ccdave
The Ultimate
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The Ultimate
Joined: Jan 2003
Posts: 1,807
Mopar Country, Mi
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Putting my top end back together. Stealth heads are now CNC ported. In the past, the stock stamped valley pan worked just fine. Now the port windows are larger, so the stamped valley pan is out (I believe). So I’m soliciting experience from what others have done.
My assumption is to cut the intake gasket portion of stock valley pan off, leaving a short tab at the bend. Then silicone the joint from that to paper gaskets cut to match the port. (????). Am I close?
What have others had success with? When a stock valley pan is cut and "bat wings" are used to seal the intake, my experience has been not if it will leak, it's when it will start leaking. Especially the rear corners. I have had little to no issues using the stock valley pan and trimming the intake ports with a high speed Christmas tree shaped double cut carbide bit. If the heads are off I bolt the valley pan to one head, align the pan and cut the pan to match the intake port on the head then switch to the other head. Done If the heads are already installed, use a thick bat wing intake gasket and align the gasket to the valley pan, outline the metal on the valley pan that needs to be trimmed with Dykem or a Sharpie, remove the bat wing gasket and trim away.........
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2465846
03/13/18 04:13 PM
03/13/18 04:13 PM
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Joined: Apr 2007
Posts: 289 Lowes
steve660
enthusiast
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enthusiast
Joined: Apr 2007
Posts: 289
Lowes
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For those who have “ported” the pan gasket windows, how did you go about this? I used tin snips too. Do 1 opening at a time. Just go slow and make small nibbles (BITES / CUTS) when cutting. Then bolt it back on and see if it needs more taken off. When your done it will be twisted badly. Just lay it on garage floor and carefully flatten it out with hammer. Mine only had .040 left on top after cutting. I Used it on a max wedge port. Block was heavily decked and heads milled a LOT! I reused it several times after. You will need paper gaskets on both sides too.
PSO headed 632 from MM. Cracked cylinder, loose valve seats, low oil pressure, low cylinder pressure. ..... Now its a door stop....
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2466067
03/13/18 10:26 PM
03/13/18 10:26 PM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
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The heads are off the motor right now, so I guess I’ll take a shot at using the head as a port template and trim the valley pan window. If I ruin the pan, then I’ll just go back to plan A and trim the windows off, mate it to a paper gasket with silicone, and wait for the leak. I just hope I don’t scar up the nice new ports too badly. I wish I had the budget for a valley plate setup, but I’m at the end of an expensive winter and the dollars are all gone. Thanks All!
Last edited by StealthWedge67; 03/13/18 10:31 PM.
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2466093
03/13/18 11:07 PM
03/13/18 11:07 PM
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Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
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master
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Canton, Ohio
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I prefer to have the heads on the motor with its head gaskets. That way you can see where You actually need to clearance the pan gasket at the ports.
Do one port at a time, put it on, you can press it on by hand and try you best to mark that port with a marker. Shave and recheck, until that ports fit is how you like, then move to the next. Make sure you press fit the pan to the same spot every time. I even Pinned mine to the head at all four corners, two on each bank.
I used a dremmel as well and maybe even some cutters. Use a Fine dremmel bit as if it is to rough, it can Grab the flimsy pan gasket and bend it. Most times you can bend it back to original shape no problem. But, you really want to Not have to do that if you can.
Ive never had to restart with a new pan gasket.
Edit, I don't shave the gasket while its On the head. That's just to check the fitment after marking it and shaving it.
Last edited by Sport440; 03/13/18 11:40 PM.
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Re: Intake gasket @ ported heads ???
[Re: tex013]
#2466097
03/13/18 11:15 PM
03/13/18 11:15 PM
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Joined: Sep 2015
Posts: 1,096 Australia
ozymaxwedge
super stock
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super stock
Joined: Sep 2015
Posts: 1,096
Australia
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Just turned up . Looks pretty neat with a drop out centre
Tex That looks good Tex. Guess it will be right and work for Indy heads as well.
1963 Plymouth Max Wedge 1971 Barracuda
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Re: Intake gasket @ ported heads ???
[Re: ozymaxwedge]
#2466131
03/14/18 12:10 AM
03/14/18 12:10 AM
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Joined: Mar 2009
Posts: 2,458 Sydney,Australia
tex013
top fuel
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Joined: Mar 2009
Posts: 2,458
Sydney,Australia
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Just turned up . Looks pretty neat with a drop out centre
Tex That looks good Tex. Guess it will be right and work for Indy heads as well. Not sure I imagine it will as the TF270 has a raised intake Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Intake gasket @ ported heads ???
[Re: StealthWedge67]
#2466151
03/14/18 12:38 AM
03/14/18 12:38 AM
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Joined: Jan 2003
Posts: 1,807 Mopar Country, Mi
ccdave
The Ultimate
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The Ultimate
Joined: Jan 2003
Posts: 1,807
Mopar Country, Mi
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The heads are off the motor right now, so I guess I’ll take a shot at using the head as a port template and trim the valley pan window. If I ruin the pan, then I’ll just go back to plan A and trim the windows off, mate it to a paper gasket with silicone, and wait for the leak. I just hope I don’t scar up the nice new ports too badly. I wish I had the budget for a valley plate setup, but I’m at the end of an expensive winter and the dollars are all gone. Thanks All! Just take your time and take full swipes with light pressure on the carbide bit and you will be fine. You can mock up the heads on the block with the head gaskets in place and trace the bolt holes on the valley pan to the heads with a scribe if you want to make sure the geometry is dead nuts on. The need to mock up like that is when you don’t know how much metal was removed off the deck or how much metal was removed of the heads. Depending on the head gasket used, the metal that was removed off the deck or heads can be made up with head gasket thickness. I just center the bolt holes on the valley pan to the head and bolt the valley pan down with short bolts with washers then start cutting. If your not steady with your hands or have doubts than I would have someone who does this type of work all the time do the cutting
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Re: Intake gasket @ ported heads ???
[Re: ccdave]
#2466200
03/14/18 02:49 AM
03/14/18 02:49 AM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
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Posts: 4,319
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The heads are off the motor right now, so I guess I’ll take a shot at using the head as a port template and trim the valley pan window. If I ruin the pan, then I’ll just go back to plan A and trim the windows off, mate it to a paper gasket with silicone, and wait for the leak. I just hope I don’t scar up the nice new ports too badly. I wish I had the budget for a valley plate setup, but I’m at the end of an expensive winter and the dollars are all gone. Thanks All! Just take your time and take full swipes with light pressure on the carbide bit and you will be fine. You can mock up the heads on the block with the head gaskets in place and trace the bolt holes on the valley pan to the heads with a scribe if you want to make sure the geometry is dead nuts on. The need to mock up like that is when you don’t know how much metal was removed off the deck or how much metal was removed of the heads. Depending on the head gasket used, the metal that was removed off the deck or heads can be made up with head gasket thickness. I just center the bolt holes on the valley pan to the head and bolt the valley pan down with short bolts with washers then start cutting. If your not steady with your hands or have doubts than I would have someone who does this type of work all the time do the cutting Thanks for the tips, Dave. While I don’t have experience porting heads, I’m good with a tool in my hand. I’ll handle it.
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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