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  #25  
Old 02-20-2012, 10:17 PM
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Re: Gen 1 4.7 (99-07) Manifold Porting Feeler/Discussion

Definetly looks like there's room for improvement. Could you give a little more info on the epoxy process? How safe/reliable would it be?
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Old 02-21-2012, 01:43 AM
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Re: Gen 1 4.7 (99-07) Manifold Porting Feeler/Discussion

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Originally Posted by mzh29 View Post
Definetly looks like there's room for improvement. Could you give a little more info on the epoxy process? How safe/reliable would it be?
Sure. I'm using Quiksteel on this manifold. Quiksteel is a 2 part/AB type epoxy that mixes like putty, which makes it much easier to set up than a runny substance like JB Weld or other epoxies. It is rated for constant use at 500* F, or intermittent use at 550*F without breaking down. In essence, your manifold would melt before this stuff does. It comes in small tubes, and sells for about 9 bucks per stick.

It is recommended for use in plastics (these manifolds are made out of Nylon) and from what I have seen, provided it cures without being disrupted, really bonds to the material. Once cured, I take the die grinder to this stuff to smooth out waves and get rid of bumps left from my fingerprints and it stays in place.
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Old 02-21-2012, 03:47 PM
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Re: Gen 1 4.7 (99-07) Manifold Porting Feeler/Discussion

Sounds Good. Can't wait to see the finished product, definetly interested.
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  #28  
Old 02-21-2012, 05:18 PM
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Re: Gen 1 4.7 (99-07) Manifold Porting Feeler/Discussion

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Sounds Good. Can't wait to see the finished product, definetly interested.
I should be able to post up some progress pics tonight, I'm finishing up a 5.7 TB that needs to go out at the moment but after I drop off some orders at the PO I'll be able to continue my work on the manifold.
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Old 02-21-2012, 08:48 PM
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Re: Gen 1 4.7 (99-07) Manifold Porting Feeler/Discussion

I guess I should ask also, is removing the intake manifold pretty straight forward?
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  #30  
Old 02-21-2012, 09:02 PM
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Re: Gen 1 4.7 (99-07) Manifold Porting Feeler/Discussion

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I guess I should ask also, is removing the intake manifold pretty straight forward?
Yes, as long as you know what you're doing. Remove the coil packs, remove the serp belt, Alternator, A/C condenser (held in by 2-3 bolts each IIRC), the injector clips, EGR valve (on side of manifold behind TB). Remove and replace. It sounds like alot but the this can be done in probably an hour.
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  #31  
Old 02-21-2012, 11:50 PM
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Heres where I'm at with the inlet so far. I am trying to thin out the seam , not only because it sticks out into the inlet into oncoming air (creating turbulence, limiting flow) but because the inlet is actually biased towards the right.Meaning the "bore" of the inlet is actually slightly off-center. So, going to even it up a bit. This combined with the "hump" may have been a trick to induce swirl, but I think this will be a step in the right direction .

I'm not making huge changes in area, just "straightening things out" and eliminating restrictions/turbulence-inhibiting features that were previously there. Even with cams, the 4.7 tends to run out of steam around 5500, and this will help that, without killing low end.

Also note that the hump is almost entirely gone, There is some more to remove in order to blend it in.


Similiar pic, just with the area wet to clean it up.



Runner work. one can only reach so far in there. Some cylinders have a bigger mismatch than others so just trying to port-match them and work the port roof. There is also work to be done on the walls, but that will be pretty simple on most.

I am running really low on sanding rolls and at this point I could really use some special low-profile rolls as the ones I usually use aren't well-suited to get into the corners of ports. So, bought some more supplies and they should be here by end of the week...I hope. I'd like to have this thing finished by the weekend.
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  #32  
Old 02-22-2012, 02:11 PM
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Re: Gen 1 4.7 (99-07) Manifold Porting Feeler/Discussion

Did some more work on the hump and both the left and right seams...may be forced to do some of the final blending on the hump by hand, as the very back of it (not visible in pics) is not accessible as far as I can tell with my die grinder.
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  #33  
Old 02-22-2012, 11:07 PM
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Epoxy goes in tomorrow. Textured the floor and cleaned it off , just waiting overnigjt for it to dry.
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Old 02-22-2012, 11:25 PM
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Re: Gen 1 4.7 (99-07) Manifold Porting Feeler/Discussion

yes! let us known about the performance gains when you or whoever gives it a go!
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  #35  
Old 02-23-2012, 04:01 PM
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Laid down the epoxy but had a brain fart. My hand can barely get into the inlet even ported, and should have laid down epoxy starting in the back of the inlet first then worked my way to the front. Ill still be able to add material where needed but it will be more difficult.

I used about 2.5 OZ of Quiksteel but had to sand some away to smooth it out. I need to add about another ounce or so to fill in a few areas, as well as the left side seam to the open gap is sealed off.
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  #36  
Old 02-23-2012, 11:13 PM
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Getting closer to the end. I had the seam sealed but pulled the epoxy out because i waited too long to apply it onto the seam. Didnt fully bond to the material. Had to re-do it which you can see here. Will sand it over the weekend most likely.

The floor is 95% done except for one small section in the back.

I got my low profile sanding rolls so as soon as i finish the inlet ill be doing the runner work and selling this manifold off.
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