They're plentiful in the junkyards..Shaun41178(2) wrote:anyone have a gen 2 fuel rail they want to donate to science?
The Gen 2 rails are the ones where the front and rear banks have seperate rails right?
Moderator: Series8217
You are right, there is nothing wrong with it, but there are better setups for all out high RPM racing. Modern EFI does allow for good fuel atomization, but could still be better. You are wrong here, further away has been proven time and time again to make MORE power. It may also use slightly more fuel (Though I don't quite see how), but it makes more power at the same time. Manufacturers are going to direct because the goal isn'tmore power. It is better emissions, more torque, smoother drivability, longer lasting emissions, and slightly more power where possible. With injectors in the air horns you'll have to idle at 2000rpm, and this isn't acceptable on a factory car. If direct injection made more power, you'd see it on today's highest tuned engines, aka streetbike and F1 motors. Yet both of these have injectors mounted in the air horns (Most streetbikes have dual injectors, one after the throttle plate and close to the valve so they idle around 1500-2000 and smoothly, and make smooth low end, and the other up top for the high end power gains). F1 uses a single injector per cylinder, but they also idle at 9000rpm.Shaun41178(2) wrote:There is nothing wrong either with having hte injector near the valve. Modern efi allows great atomization even with the injector close to the valve. Further away is proven to make less power and use more fuel. Why do you think manufacturers are going to direct injection? It uses less fuel and makes more power.
I never said it would not be good for high RPM, I said it would not be as good as it could be.Also the guy I bought the parts from spun his motor to 7800. Blew three motors though. Spun cam bearings in the block. bottom end survived, but the cams which I now have were just too big and spun cam bearings ruining the blocks.
Gooch wrote:Way to go douche. You are like a one-man, fiero-destroying machine.
Audi R8's used direct injection.aaron wrote:Manufacturers are going to direct because the goal isn'tmore power. It is better emissions, more torque, smoother drivability, longer lasting emissions, and slightly more power where possible. With injectors in the air horns you'll have to idle at 2000rpm, and this isn't acceptable on a factory car. If direct injection made more power, you'd see it on today's highest tuned engines, aka streetbike and F1 motors.
No. Compared to injection pressure (45+ psi), extra charge motion has very little effect on atomisation. Carbs and TBI need charge motion for atomisation because they inject fuel at 6-15 psi.aaron wrote:In addition, the atomization is going to be better having the intector mounted atop the air horn vs pointing at the valve stem. This may not be the entire reason for the power increase, but it is partially.
...which are universally agreed to be too long.I know it came with long velocity stacks. In fact, I said this: "thank God for the tall velocity stacks" But that still doesn't deny the fact that the runners are significantly shorter than the factory 2.8l manifolds.
True, but I think cutting runner length in half, and increasing the diamater God knows how much, may be on the upper limits of too much.will wrote:...which are universally agreed to be too long.I know it came with long velocity stacks. In fact, I said this: "thank God for the tall velocity stacks" But that still doesn't deny the fact that the runners are significantly shorter than the factory 2.8l manifolds.
Hahaha :rotflmao: It really was a penis mightier.p8ntman442 wrote:so those pills worked for you?aaron wrote:
No, but I have seen first hand the differences that 3-4" make, and it was pretty significant.
Judging from him putting it up for sale, I'd say about $1500.v6h.o. wrote:Oh you lucky fucking bastard.. And here you get jelous at me having too many toys.. HA! who's the bastard who has a alum block and ITB manifold!
Very nice toy. Hmmm. Wonder what it would be like with my 3500 block/2.8L crank engine setup.
How much would one of those rare-as intakes go for?
It certainly is. I wouldn't do Ebay personally, I think it'd be easier to get rid of via the forums, and for better money. It isn't liek this is a bolt on performance part (Though not that far off).donk_316 wrote:$1500 is a good deal for this....put it on eBay with a reserve and see what happens