SleeperZ31 Posted May 6, 2008 Share Posted May 6, 2008 Anyone know of good sites and pics on how to do a proper engloids plenum for a vg30(e)? redz31.com is very sparse on the subject, ive got all the proper bits for my dremel and its set at the proper speed for aluminum cutting/porting, i just need a basic guidline so i dont f**k it up... Quote Link to comment Share on other sites More sharing options...
wherezmytofu Posted May 7, 2008 Share Posted May 7, 2008 depends on the manifold, i did it with the maxima manifold ( get ride of that elbow bend) i got everything i needed to know form the pictures of some guy selling it on ebay Quote Link to comment Share on other sites More sharing options...
SleeperZ31 Posted May 7, 2008 Author Share Posted May 7, 2008 yeah, i saw that too, but he milled the inner flanges and i dont have such a machine, im just trying to figure out how to get the smoothest possible finish without the possibilty of ruining it. Quote Link to comment Share on other sites More sharing options...
SleeperZ31 Posted May 7, 2008 Author Share Posted May 7, 2008 Ok so i've picked up the plenum today, holy crap i never really knew how restrictive these things are till i got into it, and ive come up with an awesome idea or so I think, instead of using aluminum to cover it back up im using high-strength lexan! Ive seen it done before, including on a home-built centrifugaly supercharged lexus sc400, pretty cool looking and tough too, im a cook and most of our cookwear is lexan and its stood up to fire,microwaves, and getting tossed around for over 10 years with little wear and tear, I figured ill score and sand the area to be mated to the plenum and use the best gasket sealant i can find...and another plus is that drilling the holes to run the bolts through should be alot easier to see and do...ill try n' post a pic of the finished product as soon as its done, as far as i know itll be the first clear top engloids plenum on a Z, or so im hoping : ) Quote Link to comment Share on other sites More sharing options...
wherezmytofu Posted May 8, 2008 Share Posted May 8, 2008 you have to remember the heat in the intake manifold. there is actual fire in there are certain points. lexan isnt a good idea. which "inner flanges" do you mean he milled? points that bolt to the runners? Quote Link to comment Share on other sites More sharing options...
SleeperZ31 Posted May 8, 2008 Author Share Posted May 8, 2008 "Fire in the intake manifold?" you sure? the only condition under which i think there would be fire in the intake would be a missfire, which has never happened to my Z yet, besides, alot of manufacturers use plastic intakes, and have been for years. no physical heat such as a flame should ever make its way into the intake, unless of course your talking about the EGR system, which i could understand,but if the egr poured that much heat into the manifold wouldnt it ignite the fuel-air charge before compression? anyways, maybe i should ditch the lexan idea and just stick to aluminum for now...and thanks Tofu for that good bit of constructive critisism, woulda sucked if i bolted it all up only to have molten lexan F**k up my motor..ha...but seriosly check the supercharged lexus sc400 video, its got a lexan-top intake, howd he get away with that? Quote Link to comment Share on other sites More sharing options...
wherezmytofu Posted May 11, 2008 Share Posted May 11, 2008 lexan starts to get soft and melty with just a hair dryer...so.... Quote Link to comment Share on other sites More sharing options...
Careless Posted May 11, 2008 Share Posted May 11, 2008 you'd need some sort of high heat polycarbonate. almost like the ones that people use to make those clear wheels if you've seen them. They're able to withstand brake heat. Quote Link to comment Share on other sites More sharing options...
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