Pictures of the carb project and Video

[lostforawhile]

ok another short video showing what needs to be machined yet on the choke pull. http://video.google.com/videoplay?do...06732645191908

[forrest89sei]

Looking Great!

[Civic Accord Honda]

nice

[lostforawhile]

some more pics and a another short video.
am deceiding if i should get rid of the heat shield,it's really not needed since these carbs will be on the opposite side of the manifold from the exaust.
i would need to make something that the throttle return springs attach to though. since they attach to the heat shield itself.




and a short video
http://video.google.com/videoplay?do...63978703527584

[Civic Accord Honda]

you should slap thos on your lawn mower :-D

[Legend_master]

Im rather curiose as to how those are going to sound. How much longer before they are ready to go?

[lostforawhile]

it's really just a money issue,the rebuild kit for both is going to be 400 bucks. i just won the fuel pump on ebay,it's an ac(walbro) diaphram pump,which is probably what would have been on these to begin with. those pumps aren't made anymore,but you can fully rebuild them for under 20 bucks,used on hundreds of american cars,so the parts are available at nappa. got in a fierce bidding war over that pump. then it's a matter of plumbing and making the carb bracing to hold up the manifold. going to be a while, i really hope to have them up and running for next summers car show season. i would like to be able to drive to some meets,and have the alignment,and new tires on the front done. and be able to open the car up with these on a road trip to a meet.

[LX-incredible]

Cool! Finally, something to simplify the project, lol.

[lostforawhile]

choke slide has been modified,works a little better and has ten more horsepower then the old choke slide(jk).
ckoke cable in place,i still have to make a retaining plate to keep the cable in position
the assembly after being machined,the small black screws are the set screws that hold the cables from the carbs in place

the cable is always under tension from the chokes on the carbs themselves,so it's always only pulling in one direction


retaining screws that hold the cable housings in place

slot milled in back of bar to retain cable

[lostforawhile]

ok more work done,the throttle spring return brackets are done,and the ugly factory heat shield is gone.
ok first,i got rid of the ugly factory rusted heat shield,since the three g exaust is on the opposite side of the head from the intake,it's not needed. i needed something to attach the throttle return springs too, so i built this bracket for them. I got rid of the original single springs,not only because they are 35 years old,but because the double springs are much safer. I'm using a GM style dual throttle spring.
here is the bracket asssembly,there is only one spring for the moment because thats all they had in stock.

some clearance that had to be machined in for the linkage

[lostforawhile]

i hate to say this, but that's going to flow poorly. i'm hoping that you have provisions there for velocity stacks, because what i'm looking at is just an air cleaner. you have plenty of room for velo stacks, though.

http://en.wikipedia.org/wiki/Velocity_stack

http://video.google.com/videoplay?do...47958827&hl=en


need to go to socket head cap screws for the bolts though

[lostforawhile]

got to go to nappa in the morning,get an oil pan gasket and the other throttle return spring,then put it all back together to do more measurements.

[lostforawhile]

[b]some more work on the manifold for the carb project. the datsun manifold had coolant passages going into the head,so these required plugging and welding shut. /b]
the plugs,the coolant holes in the manifold are reamed out to .538, the plugs are machine at .540 which gives a .002 interference fit,they are pressed in right now and hopefully will be welded tomorrow. after that the manifold gets clamped to the bridgeport and flycut to give a nice machined gasket surface.




also a couple of other things done,this is where the brake booster check valve attaches,and the return springs are done

[speedpenguin]

Wow. Just... Wow.

Your project has really come along since I've been gone.

[lostforawhile]

thanks.it's mostly a matter of money right now,i priced the rebuild kits and the special tools needed to align the needle,and to have them overhauled by z therapy,is only a hundred bucks more,then just the kits themsleves. i couldn't do all the replating and other stuff they do for the same price. plus they install the ball bearing throttle shafts and fix the sticky choke problem. after i figured out the throttle shafts were worn out, it now makes more sense to have them do it. 500 bucks to have both of them rebuilt. i'm going to finish up the manifolds completly then when i have the money,i'll get the carbs rebuilt. also going to install my pump and fuel pickup,i can use it with the existing carb.also deceding if i'm going to have the manifold powdercoated black,and just do purple accents. i think it would look evil black with all the braided lines and the purple.

[speedpenguin]

Go for it. Let purple be your muse.

[lostforawhile]

my goal as of right now,is to have the car completly done by the summer car show season. it also will allow me to work on it in the winter here, it's been so hot it's dangerous to work outside. i tried to wet sand on the car the other day,and about got heatstroke. so i can keeep working on the little aggrevating crap,like the carb parts,and when it gets cooler do the major stuff on the car.

[lostforawhile]

ok the original part of the datsun manifold is finished,i did the final facing of the manifold today,and it was warped all to crap. probably due to the exaust manifold in the original setup being right under it. all is fixed though,i ended up clampint the manifold in the vise on the mill,afer not being able to make the setup work on the table. then hit it with a fly cutter to shave it down,don't try this at home,that's like a ginsu knife whipping around at high rpms. i have a slight ridge probably .002 from the passes on the cutter,i will remove those by hand with fine sandpaper. here is the video. [this is just a rough cut,it takes so long to upload videos that i only do short ones. ]
http://video.google.com/videoplay?do...50716236&hl=en




and finally where the brace for the manifold will attach,a lot like the original.

[mushroom_toy]

Looks good. I will definitely have to see the car someday.

[DDRaptor]

that's so freaking cool i would have a field and get an anyursm (spelling) with all those tools and machines in your workshop. I'll make sure to ask you when i make my dual carb manifold for my dual dcoe (if I ever have the $$$) or my mikunis

[forrest89sei]

Looks GREAT!!

[2oodoor]

outstanding project progress, you have some neat looking parts coming together there..

[Hazwan]

Thats AWESOME! Can't wait to see your car done.

[lostforawhile]

that's so freaking cool i would have a field and get an anyursm (spelling) with all those tools and machines in your workshop. I'll make sure to ask you when i make my dual carb manifold for my dual dcoe (if I ever have the $$$) or my mikunis

i was at work,i don't own the bridgeport here,I WISH,i just have a really cool boss who lets me work in the shop after work,and scavenge through his junk, he a brilliant machinist,he actually grew up in that shop,he like to give me hell about my car though,has for years,i own quite a bit of crap myself as far as tools,but the big machines are at the plant.

[lostforawhile]

well i installed studs on the manifold adaptor plate, had to do a little bit of grinding on the manifold to make sure they fit,and cut off two of them shorter,to clear the center bracing. now i'm putting the entire rube goldberg contraption back together again,just assemble and disassemble. had to make sure everything cleared.