Meth bung shaving for flush nozzle placement DIY

[robc1976]

Decided to do a small DIY for this since some CP have the meth bung to high and needed to b e shave so the meth nozzle can be flush with inner pipe. This DIY is done on a ER Charge pipe.

This is discussed in detail here:

http://www.bimmerboost.com/showthrea...-(vid-amp-pics)

Note: Not responsible for any damage to you or your car, this worked on my car so will work on yours.

Suggestions:

I suggest using safety glasses and blowing out charge pipe with leaf blower or compressed air.

[trufus]

What advantage do you expect to have with a flush nozzle vs. a recessed nozzle?

[robc1976]

Better spray pattern, better optimization and as little pooling as possible.

[Cn555ic]

Nice...Little OCD there my friend! lol Nice work

[robc1976]

Nice...Little OCD there my friend! lol Nice work

mostly because of you lol!!!

[Cn555ic]

mostly because of you lol!!!

I guess you were following my install threads! lol

[robc1976]

I guess you were following my install threads! lol

you better believe it....saw a post where yours was flush and had to have it that way lol!!

[LostMarine]

Nice...Little OCD there my friend! lol Nice work

lol, you calling someone OCD?

[trufus]

Better spray pattern, better optimization and as little pooling as possible.

I don't mean to belittle your efforts, but if the spray cone isn't hitting the sides of the recessed area I can't see where this would improve (or degrade) anything. As long as the meth nozzle is far enough upstream from the intake manifold, the meth should mix essentially the same way in the far-field, recessed or not.

This isn't an easy thing to predict though.

[robc1976]

I don't mean to belittle your efforts, but if the spray cone isn't hitting the sides of the recessed area I can't see where this would improve (or degrade) anything. As long as the meth nozzle is far enough upstream from the intake manifold, the meth should mix essentially the same way in the far-field, recessed or not.

This isn't an easy thing to predict though.

It is such a small effort to do this, but the air is going around the outside of the edge of the pipe drawing the meth into the recess wich can hurt optimization/pattern and cause a bit of pooling. I am not saying this is 100% true (we need a clear CP lol!!). But terry burger and many others state that a recessed nozzle indeed does hurt optimization and causes pooling and figured why not. I think this would be more evident with larger single nozzle setups to.

[trufus]

It is such a small effort to do this, but the air is going around the outside of the edge of the pipe drawing the meth into the recess wich can hurt optimization/pattern and cause a bit of pooling. I am not saying this is 100% true (we need a clear CP lol!!). But terry burger and many others state that a recessed nozzle indeed does hurt optimization and causes pooling and figured why not. I think this would be more evident with larger single nozzle setups to.

I am having a hard time believing that any meth would recirculate in the small recessed area. Even if it did, your "flush" mounting hasn't solved the problem, you'd have to plug up what is left of the hole to prevent any pressure deltas on the charge pipe wall. Maybe that's a good next step. Well that and maybe one of us should quit speculating and get some real data

Any idea what kind of speeds the charge air is doing?

[robc1976]

I am having a hard time believing that any meth would recirculate in the small recessed area. Even if it did, your "flush" mounting hasn't solved the problem, you'd have to plug up what is left of the hole to prevent any pressure deltas on the charge pipe wall. Maybe that's a good next step. Well that and maybe one of us should quit speculating and get some real data

Any idea what kind of speeds the charge air is doing?

I would love to get some real data on this, just don't see a way to do it lol!! I think you are correct on that area, that is why a lot of CP's (BMS) for instance has the nozzle flush with the pipe but with no recess around the nozzle.

[dzenno@PTF]

When it comes to performance tuning, OCD gives you an advantage in the end definitely better to keep the nozzle flush with the pipe or even ever so slightly protruding inwards.

[trufus]

When it comes to performance tuning, OCD gives you an advantage in the end definitely better to keep the nozzle flush with the pipe or even ever so slightly protruding inwards.

The only advantage I'm seeing is less turbulent charge air when meth isn't flowing...?

[MDORPHN]

slightly protruding inwards.

Hmmm, how 'bout recessed ;-)

Neil

[robc1976]

When it comes to performance tuning, OCD gives you an advantage in the end definitely better to keep the nozzle flush with the pipe or even ever so slightly protruding inwards.

That it does!! Every detail counts

[robc1976]

Hmmm, how 'bout recessed ;-)

Neil

he said "ever so lightly" lol!! My nozzle is recessed so it is "ever so slightly". But all honestly my nozzle was way to recessed IMHO.

[Sticky]

Another great DIY... feel spoiled.

[robc1976]

Another great DIY... feel spoiled.

I appreciate that, really do. I have another one I am posting tonight.