k16-2467, possibly the best turbo for a 1.6

[RabbitJockey]

I'd like to see everyone who has a very good understanding of turbos and compressor maps to chime in on this.  It appears to be used on porsches, i'm guessing on a twin turbo setup, and that is very important, and heres why:

on the 1.6l engines, they need a *** load of boost, at a relatively low flow rate, most turbos will either surge at these parameters, or they will be inefficient.  this on an engine tryin to make over 150-160hp, below that there are many great turbo options

now on a twin turbo setup, the turbos must put out the same amount of pressure(boost), but they put out half of the flow, so in general they are a low flow high boost turbo, just what we need!!


in the past i have over looked this little beauty because it was on the squirrel performance turbo calculator, but as u can see the left vertical axis on the compressor map is not linear with its numbers, i guess the people at squirrel didn't realize this because it plots the pr wrong on their website.  so here it is a turbo thats good for 30-35psi and 200-250 crank hp, with no concerns over surging or inefficiency.

the only thing to be concerned over is the exhaust side of the turbo, which i haven't even looked at

[RabbitJockey]

i would also like to look at some of the other newer borgwarner turbos such as the s200sx-46, how ever i couldn't find a compressor map yet, only a map for the largest turbo out of the s200sx series, the 46 is the smallest

[RabbitJockey]

also, this turbos compressor wheel is similar in size and trim to the garrett t3 45 trim, but flows a lot more.

[R.O.R-2.0]

i would also like to look at some of the other newer borgwarner turbos such as the s200sx-46, how ever i couldn't find a compressor map yet, only a map for the largest turbo out of the s200sx series, the 46 is the smallest

you mean, for the CA18 turbo, or the SR20 turbo?

[RabbitJockey]

no s200sx is the name of the series of the turbo it doesn't have anything to do with nissan, i think it comes from how borgwarner bought schwitzer, which makes the s200 s300 and so on.  their s series they are calling "airwerks"  it is the same style of turbo that gm performance used on their saturn and cavalier i believe which were the first fwd cars to break 200mph trap speed, and also hold the fastest fwd et record. all this was done with ecotec engines.  they were running 7's which i also believe is a first.

[RabbitJockey]

come on no one has input??? i should do a big write up on turbo sizing and reading compressor maps, i don't really want to because all that information is readily available on the internet and through many books.

[R.O.R-2.0]

rather than a write up, how bout some links to where you would find the info maybe?

[RabbitJockey]

garrett has a really good write up, which is good too since the garrett turbos are most common, and so is the garrett terminology

http://www.turbobygarrett.com/turbobygarrett/turbo_tech_advanced

on kkk turbos the k24/k14/k26 part means very little, i think it has to do with the exhaust side of the turbo

but the rest of the number such as on the k16-2467, means alot
 the 24 stands for 2.4 inches, which is the exducer size(big size) of the compressor wheel, the 67 is a percentage for the inducer, which is 67% the size of the exducer

[Alcaid]

The K16-2467 is from the Porsche 993TT, 3,6l 408HP, roughly 500HP after a chip tune. That translates to that each K16-2467 is supplying a 1.8l petrol engine with air to support 204hp (250hp tuned).

The non-linear PR axis is not correct! To have a non linear PR axis the efficiency islands would have to "bend" and they don't. Compare to the real compressor map for this compressor you see that the max PR on the graph actually should be 2.6, axis is linear:



Due to the high BSFC of a prechamber diesel engine this turbo would not be able to support much more than 170HP and spool would be slow due to the big A/R turbine side, peak boost on the 993TT is not before 4500RPM and it will come in even later on a 1.6TD....

[RabbitJockey]

hmm. this is unfortunate, i guess it is more alike with the 45 trim t3 than i had thought.  after looking at some other borg warner compressor maps i see there are quite a few with similar incorrect markings.  i would bet the compressor is still efficient quite a bit above what they show since the max rpm thats actually shown is only 140k and the 70% island isn't show fully, but that still would only put it around where the 45 trim t3 falls.  which is ten times cheaper and easily available off many cars and from junkyards