400hp w210, om606 Turbo or 320cdi?

Naturally-aspirated

16

01-19-2011, 07:14 PM #33

I have used nozzles off Kerma before, good people. Only problem is that I have bought here nozzles for £17 each which were about $90 each from Kerma, there is quite a markup on the cost from Bosio (the Italian Mfr's, Kerma is the main USA importer).

OE bosch for earlier DI run about £12 a nozzle, of course CR injectors are only just becoming affordable and there is little documented about them - but the nozzle part is similar.

Greg.

(01-19-2011, 12:45 PM)pdxgrease I would try contacting charles migliore (aka kerma tdi) about nozzles. He has a corner on high end nozzles with VAG tdi's in the states. He also has a lot of turbo options. Might be worth chatting him up about your application.

http://www.kermatdi.com/

Quite, but you can't get 4x the flow with a remap. Install a fire hydrant in place of your kitchen tap and you can see the point on flow of larger nozzles. For efficieny, the fuel has to be put in the engine in the 'window' of efficiency. Or the fuel is still being put in when it should have been burnt (too long duration). So, up to a point higher rail pressure will force more fuel in but a) it shortens pump life b) it can potentially cause the diesel spray to hit the piston and reach the edge of the compressed air due to too fast entry speed which can cause smoke and localised overheating and c) if you are interested in economy, the more you ramp rail pressure the harder it is to drive the pump and the lower the efficiency (once you pass the point of good atomisation) and d) even higher rail pressure will eventually be unable to get the needed fuel in time.

It depends on the goal I guess. I run larger nozzles of good design with no map and have zero smoke and better torque and power than stock. Last week I sorted the custom turbo for a motor with .216injectors which can flow to 300bhp efficiently, these smoked at idle as the holes were so big they didn't atomise well I think. The vehicle ran around 200hp (enough in it's 1200kg body to be unable to stop wheel spin on part throttle till 3rd gear where it hooked up as hard mid range as a 280hp hybrid S3) so I think the injectors were too big for it's needs. But there is no way, even with remap, that stock can flow enough fuel for it's current performance.

On another note, been chatting with a guy about modding the CP3 pump. He said, first off, why? There are, it seems lots of CP3's capable of running 500hp stock on truck engines. So he said find one that fits and use that instead..... hey no more supply problems Big Grin

Cheers, Greg.

(01-18-2011, 03:05 AM)tuikku .
Injectors are expesive - remap is cheap.
You buy expensive parts, which don´t work properly without remap.
But, just only remap gives more power and better work.

AMG injectors fits and works without remap - and smokes.
Cooler is from China.
About the rail-pressure - the higher, the better. In every ways.

I have some difficulties in my project now.
The front of the engine and car are too small and the pump is too big.
Part numbers are right, but vacuum-pump don´t seem to fit and there are also troubles with belt.

This post was last modified: 01-19-2011, 07:27 PM by greg123.