So if I were to make a frankenmotor.. Living in Canada what Could i do for winter starts? Good starter, wires, Gp's and battery?will it suffice when i need it to start on a -15c day? I mean like i hear of some people having troubles with just a normal 1.6... What do you guys think? I would have to plug it in?
50 psi eh?how you gonna hold that head down?how ya gonna keep the gasket from shooting out the side of the head?i talked to some people on here, about my 2.0 audi (same engine as yours, minus one cylinder)and they told me it could run 40 pretty reliably. but not with a stock head gasket or bolts.
Quote from: Rabbit on Roids on August 11, 2009, 12:40:31 pm50 psi eh?how you gonna hold that head down?how ya gonna keep the gasket from shooting out the side of the head?i talked to some people on here, about my 2.0 audi (same engine as yours, minus one cylinder)and they told me it could run 40 pretty reliably. but not with a stock head gasket or bolts.I'll take some pics of my modifications of the block... =)And I'm not the first to run at 50 PSI on these engines, but people are also full of ***, thats why I have a spare block Are you sure the BMW M21 is Audi? Your not talking VAG? (I know its a VAG forum, but I like my BMW =)And I'm not planning on running at 50PSI all the time, everyday. Everyday boost will be around 40PSI. With electronic controlled boost/boostcontroller.My clutch is going to leave my at 800NM anyway.Ive run 27PSI in my standard 1,6GTD. Ive run around 30 PSI in my standard M21D24. (Then I added loads of Methanol+Water, and the *** went boom@43PSI)Still, I cant tell you if its going to work, but I know atleast one guy running at 50PSI today, and the finnish guys run mercedes engines at 50PSI. (Youtube Mynä Diesel)http://www.youtube.com/watch?v=ep-soNJ8D8Y&translated=1Or do it this way http://www.youtube.com/watch?v=qcDztfFXPww&translated=1And this is a album from a swedish guy who drives at 50PSI with the same engine as me: http://www.helgonet.ath.cx/album04// klang
Most Mercedes have aluminium heads. And om606 will make over 420hp@23psi, no need to huge boost. Also, no need to lower compression from stock.
in thinking that we only ever need about 35 psi max to these engines. if we cant make our desired power at 35 psi, then we need to tweek and tune. or get bigger nozzles
Quote from: Rabbit on Roids on August 13, 2009, 01:24:15 pmin thinking that we only ever need about 35 psi max to these engines. if we cant make our desired power at 35 psi, then we need to tweek and tune. or get bigger nozzles I dare say that should say better nozzles. You need to be able to burn all the fuel you're dumping in, and if it's just a massive single-hole nozzle that's not gonna happen very well. Big smoke no love. Seven hole nozzles for an IDI?
why dont they make nozzles that have tons of little holes? you would think it would atomize way way better than one or a few bigger holes.
Quote from: Rabbit on Roids on August 13, 2009, 03:24:58 pmwhy dont they make nozzles that have tons of little holes? you would think it would atomize way way better than one or a few bigger holes.They do. They are used in low compression gasoline engines They are also in the intake.Atomization isn't the only thing you need to worry about. The rate of the burn directly effects noise levels as well as the stress put on the crank/rods etc. The mechanical advantage of the crank is very low near TDC. It's at it's peak half way down the bore.
They are also in TDIs. One of the big things holding diesel power back is adequate mixing, so separating your fuel streams into more, finer streams can help you get a better, more consistent and mixed burn.