I want that truck! Same deal as the oil pan? You send it and I will pay for the shipping.
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| Porting, engine and valve unshrouding pics now at https://www.slantsix.org/forum/viewtopic.php?t=34063 |
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| Author: | rock [ Mon Mar 02, 2009 6:16 am ] |
| Post subject: | Porting, engine and valve unshrouding pics now at |
Folks, Many guys asked me to post some pics of valve unshrouding for big valves so here they are, along with one truck pic and a before and after engine pic, and a manifold ported for the big Aussie gasket holes. http://tinyurl.com/rockphotos I must acknowledge the fabulous help of NewLancerMan whose site they are on. This geeky stuff stomps me where engine work, machine shop, and painting never do! Thanks Menko! rock '64d100 |
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| Author: | Dart270 [ Mon Mar 02, 2009 7:06 am ] |
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Nice pics, rock! Man, the truck looks great too. Keep on truckin'! Lou |
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| Author: | sandy in BC [ Mon Mar 02, 2009 8:10 am ] |
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WOW! What a beautiful truck! I love the early grilles. Nice chamber work. Where did you end up for final CCs? My wife has a 66 D100 project...... |
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| Author: | armyofchuckness [ Mon Mar 02, 2009 8:44 am ] |
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Very nice. Thanks for sharing these pics. |
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| Author: | CARS [ Mon Mar 02, 2009 8:55 am ] |
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Thanks for the pics. I have envisioned what that would look like but have never seen them opened up. So, the followup question for you is how is it done? Can the machinist do the cuts the same time he cuts the valve seats? Or do you cut them with a die grinder and pray you don't slip?? |
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| Author: | pinkiedog64 [ Mon Mar 02, 2009 9:22 am ] |
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Rock, Sweet truck! I love red Sweptlines (ok ok Utiline, but still) Did yo run HEI? If so, where'd you hide all the wires at? Very clean looking bay. Stephan |
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| Author: | NewLancerMan [ Mon Mar 02, 2009 10:25 am ] |
| Post subject: | Re: Porting, engine and valve unshrouding pics now at |
Quote: This geeky stuff stomps me where engine work, machine shop, and painting never do! Thanks Menko!
We have complimentary skill sets my friend. Trust me, when I try and dial in that distributor, you'll be hearing from me =)
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| Author: | Joshie225 [ Mon Mar 02, 2009 10:32 am ] |
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Are the head's exhaust ports smaller than the exhaust manifold ports? |
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| Author: | Rick Covalt [ Mon Mar 02, 2009 12:27 pm ] |
| Post subject: | Nice Pics |
Do you have a good picture looking into the combustion chamber of the head with the valves out? Thanks, Rick |
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| Author: | wvenable [ Mon Mar 02, 2009 1:03 pm ] |
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I want that truck! Same deal as the oil pan? You send it and I will pay for the shipping.
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| Author: | NewLancerMan [ Mon Mar 02, 2009 3:59 pm ] |
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Quote: Are the head's exhaust ports smaller than the exhaust manifold ports?
Josh, just out of curiosity what makes you ask that?
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| Author: | Joshie225 [ Mon Mar 02, 2009 4:43 pm ] |
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I asked because the head's exhaust ports look really big at the port face. The exhaust gasses should not be running into the sharp edge of a smaller manifold or header port as doing so creates turbulence and an aerodynamic constriction. The exhaust manifold or header port should always be larger than the head port. Also, on the intake side at least, the ports of a stock head are already larger at the port face than down in the port very slightly. Best guess for this is to accommodate a slight mismatch between the manifold and head. Again, the purpose is to not run the gasses into a sharp edge. Bell mouthing the exhaust and slowing the velocity at that point is a bad idea. Unless one was to uniformly enlarge the exhaust port (which already flows better than the slant's intake port) it's a complete waste of time at best and ruins the head at the worst. Thankfully Rock doesn't appear to have hit water. So many people spout off about "gasket matching" it really bugs me. Who figured out the holes in the gasket are the ideal size? If they are what are all the other conditions of this "ideal"? Always ask why and don't accept the answer even if it comes from an expert. I am no expert, but I make a lot fewer mistakes than I used to. |
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| Author: | wjajr [ Mon Mar 02, 2009 6:23 pm ] |
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Nice looking truck there Rock. Did you use Endnbld SS 1.70", 1.44" valves? How did you determine how far to cut back the relief, or did you just grind back to the inner edge of the head gasket and call it good? |
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| Author: | NewLancerMan [ Mon Mar 02, 2009 7:31 pm ] |
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Quote: Always ask why and don't accept the answer even if it comes from an expert. I am no expert, but I make a lot fewer mistakes than I used to.
Ok that's what I was thinking you were getting at, as I could see that any constriction leaving the head would not be a good thing. Just wondering as I get ready for stage 2 of the head massaging in the next few months here to take advantage of the wiseco pistons and k1 rods.Thanks for answering! If I can make 1 less mistake a time, I'd be doing pretty good MJ |
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| Author: | 65Dodge100 [ Tue Mar 03, 2009 4:10 am ] |
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