Recent content by Silverbullet86

without a thermostat, your engine would run cooler than it should. This may or may not be a good thing. Adapt this to your application.

blackcobra: Qin/(mf*Qhv) is indicated fuel conversion efficiency Would finding the adiabatic flame temp of gasoline VS ethanol at stoich combustion help you?

The 5 lugs pattern is the same with the newer Mustangs (2000ish), however if your referring to the 4 lug pattern, they are 4x113.4 on the S13 and S14 240sx. It is slightly different from the 1990ish foxbody Mustang bolt pattern if that is what you are basing it off of.

the rotating hub has a torque force. The wheels in contact with the road bolted to the hub are exposed to a bearing stress where there is a shear force present on the wheel studs and the face of the wheel. The more studs there are, the less shear force on each of the studs. It is just an...

I'm not sure if i understand that statement. Define low flow. Isn't the point of boosting an N/A motor to make it flow more: ie it had low flow, and now flows higher.

Also wanted to add, that many turbo chargers on the market today are build much much stronger than before and it may not even be necessary to use a BOV in attempt to gain throttle response. Some manufactures sell anti surge compressor housings.

There are different designs of BOVs. A "pull type" BOV will not leak due to the fact that having + pressure in the charge pipe keeps the BOV closed, while a traditional "push type" BOV will have the + pressure from the charge pipe pushing against the piston towards the direction is opens. i...

in addition ... in my little Thermal Eff equation, the work increased with the higher Qin'; (11-6) VS (10-6); which makes no sense in real life. There wouldn't be more power with hotter intake air. Someone who has worked with heat engine engineering wanna clear up this mess?

i actively read several car forums and i came across a thread that linked to this thread http://www.gassavers.org/showthread.php?t=244 where this guy raised his intake temp and got better MPG with success, along with others who have tried. That got me thinking. In i recall from Thermal Apps...

in case this needs to be cleared up from my last post: k =(cP/cV) assuming constant specific heats. EtaTH = Thermal Efficiency

i have a question that might sound a little stupid. Wankel engines fall under the Otto cycle correct? If thats the case, surface to volume ratio was mentioned a couple times and it affects thermal eff. apparently. I recall in Thermal Apps class that 1-(1/comp.Ratio^k-1)=EtaTh, so the higher the...

http://gas2.org/2008/06/09/turbine-engine-no-pistons-no-lube-30-better-fuel-economy/ I think my Thermodynamics text book needs to be rewritten now.

I'm sure many of you guys have heard of the Tesla Roadster ( http://www.teslamotors.com/ ), the electric sports car. There is also this other company that is making Shelby Cobras and new Mustangs with full electric motors. I can't seem to find any information on who manufactures these motors...

i see a problem with that. Parallel twin turbos work like that, but not sequential. The purpose is to have a larger turbo and a smaller turbo. The amount of exhaust flow to spool the larger turbo in its efficiency range to make big HP numbers would DESTROY the smaller turbo if it had to go...

damn it. And i thought i was a genius lol. I guess it was too simple of a concept to have been not thought of. I think this system is superior over the sequential setups RX-7s and Supras have from the factory because it can be an easy bolt on product for aftermarket performance. OEM cars with...