seattlejester Posted February 12, 2017 Share Posted February 12, 2017 My intake manifold is going to the welders eventually. Especially now that it is cut up a bit. It is basically a large D tube manifold. Looks to be about 1/4 inch thick. While he has it should I just have him weld on a piece of aluminum bar stock with some holes drilled in it for some vacuum ports? I had 4 ports I used in my last manifold. 1 x 1/4 for map reference 1 x 1/4 for wastegate 1 x 1/4 for blow off valve 1 x 3/8 for brake booster Or should I just go with fittings like: http://www.ebay.com/itm/Speed-5183-Low-Profile-Aluminum-3-8-NPT-Vacuum-Fitting-Tee-/400886774503?hash=item5d56b6bae7:g:iC0AAOSw34FVCJ8a&vxp=mtr http://www.ebay.com/itm/PSS-1042-Stainless-Steel-Two-1-8-NPT-Ports-Low-Profile-Vacuum-Fitting-3-8-NPT-/230364313545?hash=item35a2c877c9:m:meLNZ7UEKw4ID0JyK7DU1DA&vxp=mtr Cost would be about the same really. The latter would be easier to do since i just drill and tap and install a fitting. The block would require me to cut a slot and make the piece and drill and tap those for each individual barb. I think those flat profile distribution fittings could look pretty snazzy. I'm not sure on this. Would love to hear your guys thoughts on one over the other or a third option if you have one. Quote Link to comment Share on other sites More sharing options...
skirkland1980 Posted February 13, 2017 Share Posted February 13, 2017 Mine has two. One to the bov and another to the map sensor with a T to the fuel pressure regulator. Brake vacuum is done with an electric vacuum pump. Wastegate is connected to the compressor housing. I just drilled and tapped into the thicker areas of the plenum. Do you have a picture of yours? Quote Link to comment Share on other sites More sharing options...
seattlejester Posted February 13, 2017 Author Share Posted February 13, 2017 Hmm have a link to the electric vacuum pump? That sounds interesting. Is it on all the time? http://www.ebay.com/itm/2JZ-GE-FFIM-SUPRA-TURBO-SC300-IS300-INTAKE-MANIFOLD-/122006738231?hash=item1c682b1537:g:zqMAAOSwyjBW3FZZ&vxp=mtr Same unit as that one. Well after going back and forth I decided the benefit to the NPT would be that it would be self sealing in a way and that the benefit to a vacuum block type arrangement would be that you could use any threaded fitting like a banjo fitting. I ended up buying the 3 port fitting and found a spot to tap the back of the manifold for an independent brake booster fitting. I think it will end up looking pretty snazzy, if it ends up leaking horridly I'll have to just go with a block. Quote Link to comment Share on other sites More sharing options...
skirkland1980 Posted February 13, 2017 Share Posted February 13, 2017 The vacuum pump is something I found on eBay. It was a new Ford part. I don't know what it actually fits. I have the pump wired to a relay which is triggered by the brake switch so it only runs while pressing the brake pedal. Since the booster is sealed it always holds a vacuum so no worries about an initial hard pedal. Works great. Quote Link to comment Share on other sites More sharing options...
skirkland1980 Posted February 13, 2017 Share Posted February 13, 2017 Here is the vacuum pump I used. Quote Link to comment Share on other sites More sharing options...
seattlejester Posted February 13, 2017 Author Share Posted February 13, 2017 Thanks for that, that's pretty darn cool. Not too much load when it kicks on? Quote Link to comment Share on other sites More sharing options...
skirkland1980 Posted February 14, 2017 Share Posted February 14, 2017 Its not too bad. I use my car for drag racing so when I'm in the staging lanes I use the ebrake instead. My alternator is only 80 amps. Plus I'm using a ati damper with a ridiculous underdrive pulley and a 17" electric fan. Keeping up with demand is tough. I need more alternator. Quote Link to comment Share on other sites More sharing options...
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