Bosch injectors too short?

[Zba]

Has anyone encountered this? When the factory clips are installed the bottom injector o-ring is barely seated in the manifold. I contacted the importer and they said do not use the factory clips and it will be ok; so basically float the injector there? Seems sketch. Looking at cups for the bottom, does that affect injector spray pattern and atomization? Will the fuel spray just hit the cup and drip into the manifold (exaggeration)?

Thanks

[hibiscusS4]

Ev14s? Contact o34 they make injector hats for them that make them sit properly

[Zba]

Thanks biscus. Apikol makes some too and they are local. Do you have any experience using the hats? any issues?

[Meow]

there are 4 different length ev14 injectors, 40mm, 48mm and 60mm and one with an extended tip.



The 'Standard' EV14 is appropriate for the S4 (for those curious, the 'Compact' EV14 is appropiate for the RS4), therefore a 48mm, o-ring to o-ring, should be used if the option is given.


Some companies sell the smaller ones with hats to extend them 8mm to fit correctly.

[hibiscusS4]

I will be running them with hats soon on my build so i could tell you after. I didnt know other
Companys made hats. Meow from your post the 48mm ones do not need hats?

[Zba]

My kit came with the extended injectors and I needed to use spacers on the fuel rail; nbd. My friend got the same kit and his appear to be the compact version. He's just going to swing by Apikol and pick them up and not bother messing around with a floating injector. Thanks guys.


Link to apikol
http://www.apikol.com/index.php/fuel...h-adapter.html

[zillarob]

For the standard length like m-9593-g302:
Best way is to use the hats (they go on the top) and spacers for the rail.
This will fully seat the orings and everything is snug so you dont need the clips. Up to you.

You can usually just install them directly and use the clips. This is how I usually install them.
You will need to check that the lower oring is far enough down to be in the bore, not just sitting on the tapered part.
Only seen one that was a prob, and that was because the fuel rail was tweaked from incorrect install of longer injectors.

For the longer m-9593-lu47:
Not installed these before. Guessing you just need the spacers under the rail and they will fit just fine.

[Zba]

Ahhh, hats on top. Cool. Thanks zilla

[zillarob]

I had a feeling that is where you were heading.
Dont worry, you arent the first

[Zba]

I guess that's why the are called hats and not socks :D

[zillarob]

If he just gets the hats, Lowes has the spacers and longer bolts.

[falkor923]

If he just gets the hats, Lowes has the spacers and longer bolts.

Ahhhhh.......memories!

[Meow]

For the standard length like m-9593-g302:
Best way is to use the hats (they go on the top) and spacers for the rail.
This will fully seat the orings and everything is snug so you dont need the clips. Up to you.

I prefer just using the standard length ones without hats and without spacers and just using the factory clips. Holds really well for me...

You can usually just install them directly and use the clips. This is how I usually install them.

^just like that.

[zillarob]

For the standard length like m-9593-g302:

You can usually just install them directly and use the clips. This is how I usually install them.
You will need to check that the lower oring is far enough down to be in the bore, not just sitting on the tapered part.
Only seen one that was a prob, and that was because the fuel rail was tweaked from incorrect install of longer injectors.

Like this

Works fine if the rail is good.
If the rail had been previously cranked down on the longer injectors without spacers, or apefisted fktards used a jackhammer to get it off the mani, it can tweak the rail and cause probs. Just need to 2xcheck these things if dropping them straight in.

[zillarob]

Ahhhhh.......memories!

[Meow]

If the rail had been previously cranked down on the longer injectors without spacers, or apefisted fktards used a jackhammer to get it off the mani, it can tweak the rail and cause probs. Just need to 2xcheck these things if dropping them straight in.

lol, that would suck.

[S4M3]

www.Solomotorsports.net good place to get them :)

[zillarob]

lol, that would suck.

Lol, too many threads here where people have problems doing it like we do.
I got a feeling jackhammers and fktards were more of a prob than the hardware in those cases.

And then you have the people who sell the hats telling you the car is going burst into flames if you dont use them.

Dont think this is entirely a $$ thing and I understand where they are coming from. Prob a good idea to play it safe and treat everybody like jackhammer using fktards in case somebody does actually burn their shit down.

[falkor923]

One of my bolts backed out a bit last summer and was blowing fuel out between the rail and injector top. I didn't smell it either....just noticed I lost a 1/4 tank of fuel in 20 minutes hwy cruising off boost. The pad under the hood was soaked. I figure they'd been in about a year or so.

[zillarob]

Wow
Dont you have the hats, spacers, and the clips?

[falkor923]

Wow
Dont you have the hats, spacers, and the clips?

Hats, spacers......the clips would have prevented the gap there. may have opened up at the manifold. Hard to say. Glad it wasn't worse.

[airjawed]

I used clips on top and used the slightly larger audi orings on the bottom. The rings that come with the injector are ever so slightly smaller than the audi ones.

[hibiscusS4]

Not to thread jack but i looked up the part number on my injectors and there the standard size
So these should clip in fine without anything else?

[zillarob]

Look like the standards in meows pic.
They should be fine just dropping them in, but in rare cases people have had probs.

You can usually just install them directly and use the clips. This is how I usually install them.
You will need to check that the lower oring is far enough down to be in the bore, not just sitting on the tapered part of the mani.

[hibiscusS4]

Ok will do im gonna see if i can get outta the snow then report back

[zillarob]

Oh yeah, can help to use oem orings.
They seem to be a little thicker on the cross-section.

[vtraudt]

OEM rings are thicker. I like to put them in bottom for better fit and seal.

[01audia4]

there are 4 different length ev14 injectors, 40mm, 48mm and 60mm and one with an extended tip.



The 'Standard' EV14 is appropriate for the S4 (for those curious, the 'Compact' EV14 is appropiate for the RS4), therefore a 48mm, o-ring to o-ring, should be used if the option is given.


Some companies sell the smaller ones with hats to extend them 8mm to fit correctly.

I am almost positive the standards are still too short. I had them; while they fit in the rail the o-ring just sits on on the plenum(when fully seated into the rail); the injector can be pushed down much further into the plenum(this is where the hat would come into play).

Someone correct me if I am wrong.

[hibiscusS4]

well as soon as my clips come in ill let everyone know how my standard ones fit.
speaking of that anyone have a set of electrical clips for them they wana part with before i order them new?

[Zba]

The overall injector height was roughly the same as factory but the bottom o-ring barely sat in the manifold. I'll post up some pics later tonight if I remember. We're picking up hats today.

[julex]

STFA

http://www.audizine.com/forum/showth...EV14-injectors
http://www.audizine.com/forum/showth...ssary-Hardware

[Meow]

I am almost positive the standards are still too short. I had them; while they fit in the rail the o-ring just sits on on the plenum(when fully seated into the rail); the injector can be pushed down much further into the plenum(this is where the hat would come into play).

Someone correct me if I am wrong.

Since you asked, I will correct you, you are wrong. There is no need for hats or fuel rail spacers or anything other than the factory clip when you use the standard length ev14s, unless you have a bent or broken parts.

[zillarob]

There is no need for hats or fuel rail spacers or anything other than the factory clip when you use the standard length ev14s, unless you have a bent or broken parts.

I endorse this message

[aysix]

Since you asked, I will correct you, you are wrong. There is no need for hats or fuel rail spacers or anything other than the factory clip when you use the standard length ev14s, unless you have a bent or broken parts.

x2

[01audia4]

Since you asked, I will correct you, you are wrong. There is no need for hats or fuel rail spacers or anything other than the factory clip when you use the standard length ev14s, unless you have a bent or broken parts.

Boom if that's the case why does this standard EV not sit high enough on the rail when FULLY seated into the plenum?



If I clip the injector into the rail first then bolt down the rail the o-ring isn't fully in the plenum, but it is enough to seal. So my thoughts are I need hats?

I've driven both my stage 3 cars without hats using standard ID or EV injectors. But I still believe they can be seated deeper into the plenum..rather then just barley sitting there.

[zillarob]

It works fine both ways. Pick the one you like best.

[Peter1.8t]

Standard Ev14's here with fatty OEM o-rings used on the bottom. Factory clips work just fine.

[Meow]

Boom if that's the case why does this standard EV not sit high enough on the rail when FULLY seated into the plenum?
If I clip the injector into the rail first then bolt down the rail the o-ring isn't fully in the plenum, but it is enough to seal. So my thoughts are I need hats?

I've driven both my stage 3 cars without hats using standard ID or EV injectors. But I still believe they can be seated deeper into the plenum..rather then just barley sitting there.

What makes you think they are not fully seated? Do they leak when you boost leak test?

Shave the mounting point for the fuel rail down a hair if you reallllllly feel it is necessary.

[01audia4]

It works fine both ways. Pick the one you like best.

I never said it didn't work the other way, I've ran both my cars w/o hats-I was just simply pointing out I think it would be better to run hats.

What makes you think they are not fully seated? Do they leak when you boost leak test?

Shave the mounting point for the fuel rail down a hair if you reallllllly feel it is necessary.

What makes me think they aren't fully seated is the fact that I can push them down into my plenum about another 1/4 inch when they aren't clipped into my rails. Do they leak when I boost leak, no..But is it proper? No.

[zillarob]

What we have been trying to tell you is it doesnt really matter.
If you think it would be better, run the hats. That simple