stock LLY turbo inlet

[Killerbee]

If someone were inclined, much of it could be honed out, that inside corner has a lot of material to permit a roundover, that would be a good improvement to pressure drop in that short section. It is no wonder that the intake itself can't be improved upon. Compared to this nealy 300 mph 90 degree bend, the rest of the intake is relatively restriction free...

IMO.

 

[Killerbee]

Borrowing Ben's Pic of the LLY tube. Thanks Ben :hug:

Oredered 2 of these for pre-C WI experiments.

I am looking at the razor sharp 90 on the inside of this tube, and thinking, turbulence out the wazoo. Compressor efficiency can not like this. Looks like stall on 30% of the face.

 

[Killerbee]

Maybe a mod can move some of these posts to a new thread.

I measured resistance across that bend, using 400 cfm it was 7 IWC (inches water column). After making some changes to it, I got 4 IWC. At max augmented airflow of 1000 cfm, that 7 IWC will be:

(1000/400)^2 * 7=44 iwc. That is nearly 2 psi lost! If half of it can be eliminated that is progress.

I consistently got repeatable results (I have one modded, one unchanged) of 10-20% more air flow at all flow rates

By comparison the filter minder moves at 10 iwc, .4 psi. Should drive home the point that intakes are worthless to reducing resistance, while not addressing this issue. Could well be part of the turbo lag issue.

This was an interesting find, though I originally intended to just test pre-compressor water injection.

 

[LarryJewell]

 

[sweetdiesel]

So what are you doing KB, just using a dremal and shaving the inards on the corner bend

would we not be better to just use a bigger volume HOSE?? , The EGR riser seems to be the biggest problom for the room inbetween riser and intake into the turbo

That is someething else that im not to fond of, is the WHOLE intaker riser and "Y" manifold....but thats a whole other thread

 

[Killerbee]

Yes that is all I did so far. There is a fair amount of material that can be rounded. It is not optimum by any stretch, the more I look at this piece, the more I wonder about other things, like the poor compressor efficiency at higher map rpms.

I agree, the egr retrofit project ran the show, and made the induction guy suck his thumb.

Is the LBZ the same way? Makes me really wonder also about potential for turbo bark improvement.

 

[Diesel Pilot]

I'm not sure what the diameter is of the stock turbo inlet but I found some good stuff on Jeg's website earlier this evening.

The stuff on down the page may be of some use

http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_769283_-1_10269

I was thinking this would be a pretty good replacement.

 

[LarryJewell]

Looks interesting

 

[Mike]

I'm not sure what the diameter is of the stock turbo inlet but I found some good stuff on Jeg's website earlier this evening.

The stuff on down the page may be of some use

http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_769283_-1_10269

I was thinking this would be a pretty good replacement.

I wonder if there is enough room for that elbow, looked at larry's the other day and there's not much room.

 

[Diesel Pilot]

I know it is tight in there. Maybe guys with aftermarket turbos could benifit as well. Ecc had to invert his stock airbox tube to get in there.

Since it is only $21.99 and there is a Jegs 4 miles from my house I might just buy it to see. That way nobody has to pay shipping. I've been wanting to by-pass my PCV for a long time and this will kill 2 birds with one stone, if it works.

 

[Killerbee]

That definately won't fit. But this is going in the right direction.

I am planning to do some measurements to determine just how lossy that stock piece is.

IMO, if the stock piece was redesigned, it could be made with much less resistance, without losing the basic shape. Anybody here into injection molding? I can easily do an efficient proto for molding, a buildup/rework of the stock part.

 

[Mike L.]

Like this?

 

[sweetdiesel]

where you get those from Mike?

 

[LarryJewell]

:yup:

 

[Mike L.]

where you get those from Mike?

From my friend Opie at Intelligent Engineering, Federal Way, Wa. Opie makes a lot of neat things like my billet shafts. I am a dealer so if you are interested let me know.

 

[sweetdiesel]

I'm not sure what the diameter is of the stock turbo inlet but I found some good stuff on Jeg's website earlier this evening.

i dont think that would work with a stocker though

 

[TNRGreene]

From my friend Opie at Intelligent Engineering, Federal Way, Wa. Opie makes a lot of neat things like my billet shafts. I am a dealer so if you are interested let me know.

:hello: Right here I'm also interested in some lift pumps, any clue who makes a good one? :secret:

 

[LarryJewell]

:hello: Right here I'm also interested in some lift pumps, any clue who makes a good one? :secret:

I'm also interested, i'll stick it on just as fast as I can get one

 

[Killerbee]

From the outer appearance in the picture, it looks like the stock part. I started comparing it to the stock part, and to me, I could not see any benefit, so I contacted IE.

According to the inventor, the internal aero performance was not improved. It seems a shame.

 

[sweetdiesel]

KB,
since it is made out of metal would it not be thinner,Hence less restrictive
like as you have seen the inside of the plastic is fairly thick especially at the corner
where is the metal wouldnt be.
IMO what we really need to do is get rid of the EGR motor for starters and then relocate the intake riser and modify the intake manifiold.
then we could run a way bigger turbo intake......Just a thought