Derek Posted June 12, 2008 Author Share Posted June 12, 2008 hey, ross machine has a drill bit that they sell that will make the injector holes a one-gun ordeal. costly bit at 120 bucks, but if you plan to run these... and your customers find out what you're really doing, you can make back your customers lost time! Yea I looked at those. They're nice and if I had a manual mill I'd be all over it. With my CNC mill though it's just a two step process. I drill the through hole with a drill bit and then orbit in with a 3/8" end mill to cut the injector bore, o-ring pocket and injector clearance pocket. Ain't technology grand! Derek Quote Link to comment Share on other sites More sharing options...
Careless Posted June 12, 2008 Share Posted June 12, 2008 lol gaht dangit! Quote Link to comment Share on other sites More sharing options...
Derek Posted June 13, 2008 Author Share Posted June 13, 2008 I think I have everything mocked up at this point. Here's a shot of the linkage with the throttle closed. And open This is just a practice butterfly. I need to make a jig for my lathe so I can make these as a turning operation. Milling them just isn't giving me the results I want. Say AHHHH And yes that is a giant step between the casting and the throttle tube. I have a fix for the next manifold. I just need to figure out what I'm doing on this one. This is the vacuum bleed for synchronizing the venturis. I need to lower the rear boss. Also the throttle shafts will be shorter. It looks a little shabby this way. At this point I think I have enough info to finalize the design for the rear manifold. Now all I need is time! Derek Quote Link to comment Share on other sites More sharing options...
modularnine Posted June 15, 2008 Share Posted June 15, 2008 those are fantastic. And are going to sound pretty nice ( understatement methinks ) as well. Are you going to try to blend the shape of the throttle butterfly rod into the butterfly ( i know that sounds newb but then... I am ! ) ? So it has some sort of flow around the rod. In any case very very inspiring work. Quote Link to comment Share on other sites More sharing options...
rsicard Posted June 15, 2008 Share Posted June 15, 2008 Now for the small world award. Steve is a frequent visitor to the foundry. He's known the owner for quite a few years and I've met him a few times. He's really a great guy and has a firm handle on the home brew "build it on a dime" mentality. The foundry uses induction melters. They use Olivine green sand. I've got a bunch more pics that I'm going to be uploading to a gallery in the next few days. I'll let you know when I've got it done. I'm sure we can work Kevin Bacon in here if we try hard enough! Derek Derek: I just love small companies and "He's really a great guy and has a firm handle on the home brew "build it on a dime" mentality. " This is really too cool. Quote Link to comment Share on other sites More sharing options...
Derek Posted June 15, 2008 Author Share Posted June 15, 2008 those are fantastic. And are going to sound pretty nice ( understatement methinks ) as well. Are you going to try to blend the shape of the throttle butterfly rod into the butterfly ( i know that sounds newb but then... I am ! ) ? So it has some sort of flow around the rod. In any case very very inspiring work. Yea I can't wait to hear them run. At this time I don't have plans on streamlining the shafts. If I start producing these I may increase the shaft size to 5/16" diameter. this gives me more options on pre made components like levers and such. Derek Quote Link to comment Share on other sites More sharing options...
Austin240Z Posted June 15, 2008 Share Posted June 15, 2008 that is amazing, cant wait to see and hear it on the engine Quote Link to comment Share on other sites More sharing options...
modularnine Posted June 15, 2008 Share Posted June 15, 2008 If you start to produce these I will sign up on the dotted line. I have a n42 head just sitting around doing nothing at all that would love these to be bolted to it. I'll let you get back to playing with the setup. Quote Link to comment Share on other sites More sharing options...
Buzz Posted June 16, 2008 Share Posted June 16, 2008 I 'd be intrested once they are perfected. Quote Link to comment Share on other sites More sharing options...
Derek Posted June 17, 2008 Author Share Posted June 17, 2008 I 'd be intrested once they are perfected. Thanks guys. The biggest compliment you can get is someone interested in buying your product. I will be selling these assuming it works to my expectations. I will say though that it won't be a budget manifold. There's a lot of hand work that goes into this thing. Derek Quote Link to comment Share on other sites More sharing options...
Derek Posted June 17, 2008 Author Share Posted June 17, 2008 First off I know I could have picked a nicer head and valve cover but this is the best I could come up with. This is probably the last I'll be doing on the manifold for a month or so. I'm super busy right now and in this economy I better get while the gettings good. I will be doing the final design on the rear manifold in the meantime. Derek Quote Link to comment Share on other sites More sharing options...
Challenger Posted June 17, 2008 Share Posted June 17, 2008 Looks incredible. I wish I knew how to do castings. Just wondering, will the back be the same as the front? If so I think you might have some clearance issues between the two middle airhorns. Quote Link to comment Share on other sites More sharing options...
Daeron Posted June 17, 2008 Share Posted June 17, 2008 Can you refresh my memory as to why you went with vertical throttle shafts? Quote Link to comment Share on other sites More sharing options...
Derek Posted June 17, 2008 Author Share Posted June 17, 2008 Looks incredible. I wish I knew how to do castings. Just wondering, will the back be the same as the front? If so I think you might have some clearance issues between the two middle airhorns. Luke.... trust your instincts in the 3d solids program. Alright, after looking at the pics again you made me go out and check with a square against the head. I'll have about 1/8" between the center horns. It sure looked like it was going to be collision city though. Can you refresh my memory as to why you went with vertical throttle shafts? Because the throttle bodies come in at different angles along the horizontal plane, having horizontal shafts would be a real pain to machine. And besides I love the look of the linkage on the top. Repeat after me, form first function second! Derek Quote Link to comment Share on other sites More sharing options...
Daeron Posted June 17, 2008 Share Posted June 17, 2008 Because the throttle bodies come in at different angles along the horizontal plane, having horizontal shafts would be a real pain to machine. And besides I love the look of the linkage on the top. :hs::hs: all I can say to that is DUH, I knew the answer was simple and obvious but it frankly didn't occur to me when I asked myself the question... Quote Link to comment Share on other sites More sharing options...
modularnine Posted June 19, 2008 Share Posted June 19, 2008 Thanks for the info on the vertical versus horizontal. Oh and i happen to think that the vertical arrangement looks a lot better but then i am a sucker for linkage. Quote Link to comment Share on other sites More sharing options...
BSD Posted June 19, 2008 Share Posted June 19, 2008 That is amazing dude, almost makes me want to go N/A and get on a list to buy one of these. Quote Link to comment Share on other sites More sharing options...
Tony D Posted June 19, 2008 Share Posted June 19, 2008 That is amazing dude, almost makes me want to go N/A and get on a list to buy one of these. A bit of welding on the ends to accept a plenum, and there is no requirement for this to only be N/A... Though seeing a custom-cast ITB N/A setup that puts TWM to shame really does have it's allure... Anybody remember the old CAN-AM or Formula cars with their stacks all askew? That's what this reminds me of, I love the look! The performance and sound are frilly intrinsic benefits for motorheads! Quote Link to comment Share on other sites More sharing options...
sweetleaf Posted June 19, 2008 Share Posted June 19, 2008 That manifold is like beauty and the beast, all in one. Nice job . Quote Link to comment Share on other sites More sharing options...
BobbyZ Posted June 19, 2008 Share Posted June 19, 2008 How cool would it be to have a lexan plenum for a turbocharged setup, it would show off the beautiful horns. Quote Link to comment Share on other sites More sharing options...
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