Derek

Ok I went back and re-read every single post on this build. One thing that jumped out at me was that I may be screwing up with the way I'm introducing idle control vacuum. As it's designed right now I'm just dumping it into the balance tube at the end of #6 runner. I'm starting to think this may be a mistake as this will cause #6 to run lean. Would a better solution be to run 6 individual lines to each runner to introduce the vacuum. I haven't machined the log yet so this would not be a big problem to do Any thoughts on this Thanks Derek

Josh you crack me up! It will be interesting to see the graph after I post a video of it running. Derek

Josh I'm 49 and have had my Z since 1980 or 81. In that time I've had 5 or 6 girlfriends and one wife. The wife loves riding in the Z and there's never a question as to what car we're taking when we run errands together. And that's why she's the wife and the others were girlfriends! Derek

Hi Phar Well it really looks the same as in post #226 except the butterflies are in and there's springs on the bottom of the shafts. Install is going to take longer than projected. The only way to do the heat shield is remove the header from my car and mount it on to my mock up head with the manifold. Then I can accurately fabricate the heat shield. Also I'm not going to put much time in cleaning the engine compartment as I have to pull the head eventually so I'll just wait for that. I have a major list of things I need to do on the car at the same time so the cars going to be off the road for a few weeks. And work and reality just got in the way. I pretty much chewed up all my allotted time and then some! I need to kick out a few patterns and then I can get back on it. Probably going to be the third week of January before I can install the manifold. Sigh....... At least with the throttle springs on I can periodically walk by, snap the throttles and go "woomba woomba". Hey it's all I got right now! Good info an good advice! Fortunately it will be cool here for a few more months so I won't have to deal with it right away. Seriously my SU's are such crap none of these problems are going to be any worse than I'm dealing with right now. Derek

A central distribution block in between the manifolds would be cool but being as the lines are done I'll be sticking with what I have! I'll be using a fuel pressure regulator at the distribution block with a return line to the tank. Well I made some good progress today. All of the butterflies are installed, The return springs are installed, and the linkage is adjusted and installed. So technically speaking the MANIFOLD IS DONE!!! I think. I still have to put in the vacuum stuff but unfortunately my parts didn't arrive yesterday. But all of the main machine work and assembly is completed. I'm also about halfway through the surge tank. I'll finish it up in the morning and then jump on the vacuum log when it arrives in the afternoon. We're almost there! Derek

Well I got the fuel lines done. Man That was tedious! The clips I ordered are nice but they have a molded strain relief into the plug and they will hit the fuel lines. I ordered another set that just has wires. Soon as I get them I can make the injector clamps. The foundry cast the vacuum log today hopefully I'll get it on Friday. Still to do: Machine fuel distribution block. Machine vacuum log Machine injector hold downs Machine and fit butterflies. Figure out return springs Work out PCV valve Make surge tank Yea I'll be done in January....January 2010!!!

My mom lives in Jupiter and I'll be driving the car down to Fort Lauderdale as soon as it's running well. I'm sure I can figure a way for you West palm guys to get up close and personal with my manifold....Ok maybe not that close and not that personal.... I wouldn't go that far! But I have burned up a fair amount of gray matter on this thing.

Here's a little teaser! I'm still using the too tall caps for the mock up so the lines will drop down about .25" or so. There is a .75" gap between the lines and the valve cover. I test each flare at 125 psi before I do the bend. I hope this works in the summer as it get's pretty darn hot . Derek

Hi Phar I have a real concern that the gas may boil but the look of it is so cool that I had to try it. If this doesn't work then I'll run short stainless lines to a fuel rail and have more of a traditional style delivery system. I tried flipping the air filters around and it just doesn't do anything for me. I personally like the way it looks and the air filters will be an option. I domed them to get the most surface area I could. This is one of those "see how it works in application" deals! Derek

Here's some really good spray glue at a good price http://www.glueplace.com/1081-spray-trim-adhe.html

Anyone have any experience with these? http://www.expressfuelpumps.com/autoteq-adjustable-fuel-pressure-regulator-universal-p-3802.html Thanks Derek

I would get 2 rolls of this http://www.raamaudio.com/cgi-bin/index.cgi?p=pr Derek

I need to buy one! like everyone I'm looking for something nice but cheap. Must be silver in color. Can anyone recommend a brand. Thanks Derek

Yes i have a low pressure lift pump. All right then everything in the top. That makes it a lot easier. Thanks Derek

Hi Pete It's an external tank. mounted in the rear. My only thought on dumping everything in the top was at extended idle situations won't there be the potential for the fuel to get kind of warm since there won't be a lot of replenishment from the main tank. Thanks Derek

Last week I made a set of press dies to form the air filter screens. The dies came out great but I wasn't at all happy with the results. Since I don't have any parts I decided to work on my technique and see if I could come up with a workable solution. Needless to say I'm very happy. They look exactly like I had envisioned and you can't ask for anything more than that. At this point I think I'm going to retain them with an oring stretched across the front of the screens. Now I need to make a set of dies to form the inner basket to support the foam. I sure am glad converted that lathe to CNC! Derek

Ok since nothing showed up UPS on Friday I"m kind of at a standstill on the manifold. I figure I'll get started on the surge tank next. I've got some 4" ID 4 1/2" OD aluminum pipe in stock. The plan is to make a surge tank that will house an Walbro in-tank pump. I'll weld in a flange that's drilled and tapped and grooved for an o-ring. The top plate will house the fittings as well as the insulated lugs for the fuel pump wires. Should I put the bung for the inlet on the side towards the bottom so that cool fuel from the tank is supplied to the motor? Derek

Actually I temporarily removed the block heater when I installed the EDIS and have missed it ever since. The car is harder to start, runs poorly, and get's terrible mileage since I only drive 3 miles to the shop. I haven't put it back in yet because I was waiting to finish the EFI install but it WILL be going back in! Derek

Well at least you gave me a little honey first! Well as far as performance goes this is my design criteria from my first post: http://forums.hybridz.org/showthread.php?t=121021 So here's my design criteria: #1 Look Cool #2 Look Really Cool #3 Actually Run Realistically as long as it makes the same power as a stock 280 injection manifold I'll be happy. The runners are all the same length. The #1 and #6 runners obviously have the worst angle of attack but I tried to minimize it by gently curving the runner inside the casting. So in other words the casing may look straight but internally it curves. I'm glad that people actually take the time to look for potential problems in the design. My biggest fear is that some one points something out that's a deal breaker on this. Especially this late in the game. I started this project to show potential clients what I could accomplish as a pattern maker using modern 3D computer design and CNC machines. To this end it's been a huge success for me. It moved me into another class of pattern makers and that has translated into steady work! In hind sight it seems silly to put all this work into this manifold and not try to squeeze every bit of power out of it. But the reality is most of these projects never get out of the discussion stage and I didn't want to fall into that trap. At some point you need to pull the trigger and actually build something. But at least it looks cool, and looks really cool. So two out of three aint bad! Derek

Yes the photobucket has a lot of stuff I didn't bother posting. I figured you guy's would only be interested in the cream of the crop! OK you've just confused the crap out of me! Maybe too much nog. So if the the injector needs to float (makes sense) I'll just machine some tubes to length and put them between the cap and the manifold, then torque them down. The staking I'm referring to is the butterfly screws. Is this what your rambling.... i mean talking about:-| I'm so confused! Derek

Merry Xmas everyone! I like to think of it more of a racing mechanical injection look as opposed to an old diesel look! That's why I quit poring my own stuff and started concentrating on the pattern work. Professional foundries are set up so much better than backyard foundries for proper melting and degassing techniques. There is so much voodoo involved in pouring metal. Oh THOSE clips...... I didn't have any clips-connectors when I did the design so I was conservative with the amount of spacing I left. Unfortunately they sit really high. I have clips coming on Friday so I can finalize the design. Thanks Daeron. Hopefully in a few weeks we'll be hearing it run! If I can just shake this freeking cold. Derek

Hi Phar I'll be throwing the injector mounts in a tumbler that will break the edge. Here's what I'm planning for the fuel lines. I have stainless tubing for the lines. Derek

Hey Tony Can I use brass screws. They would be a lot easier to stake. Thanks Derek

Thanks Pete. Sorry only available with the purchase of a manifold! No problem. I can make up some for you guys. I need to stretch them out a hair if you want them to fit the stock bolt pattern. Hi Jeff Thanks. Wait till I get the lines on! No clips. The 2 screws compress the injector to make the seal.

Starting to feel better the last couple of days so I put a little time in on the manifold. Linkage complete Injector hold down clamp. This ended up being a prototype as I didn't have my plugs in yet. I thought I had everything figured but they're a little high. I should have the plugs in on Friday and I'll do redesign. Air temperature sensor bung worked out perfectly. I also made my butterfly jig for the lathe. Worked like a champ. I did a couple of test pieces and the fit was much better. I still have a tiny crack of light but I'm hoping I can get that figured out. All the machine and hand work is done to the manifolds. I'm headding down to another foundry on Friday to throw them back in the Wheeabrader machine for a final finishing. Then I can start the final machining of the butterflies and the final assembly!!! I'm getting scarred. I might actually have to put this on my car soon! Got a question on the butterfly screws. Any problems using brass as they'll be easier to stake? Thanks Derek