Schwitzer S4T Turbocharger any good??

[chrisaudi s2]

hi there
just got this turbo cheap and wondered if its any good for a aby engine

here are some pics
8c73_1.jpg

9139_0.jpg

ae0e_0.jpg

ba69_0.jpg

i know the intake is around 6" and i think its a t6 flange???
Frame size similar to GT45/GT47

any info would be a great help thanks

[quattro84]

There are a lot of # S4T's around.
Commonly found on Wartsila & Scania marine diesels.. (12-16litre) they range from 450 up to 1300hp diesel engines.

You can identify yours here: http://www.turbo-product.com/Schwitzer/S4T.ASP
Can't find any flowcharts.. so i can't make any hp guesstimates.
Be aware that this will be a laggy turbo, low turbinespeed, sick pressureratio's.

[newsh]

Laggy

[chrisaudi s2]

thanks this is the spec

Schwitzer Dorman/Perkins Gen Set 1988-12 8SETCA2
(30.6) 1289hp D S4T 312110 SE652T 3K

silly question what if i run my standard kkk turbo and this ie twin the kkk for low revs and the s4t for the remander????

[s1rally]

Meltdown!!!

[chrisaudi s2]

take it thats a no
was it a good buy for £70?

whats the best engine management that dont use maf and if any one knows the cost and were to get 1?

[lind4hl]

go for vems, or Nira i3+

[quattro84]

1300hp on a diesel What are you trying to build?!

example:
A 12.6 litre 400hp DAF truck uses a GT4294 compressor..
That makes about something like ~800hp on a petrol engine.
So i hope you are seeing my point.. your S4T is mahoosive!
Try to get a hold on a compressor map/flowchart. This must be too big for a 5-cilinder application.

Holset HX82 makes 1200hp max. on a diesel.
Corrected flowrate statet on the Holset site says it'll hit 1,5kg/sec. That would make approx. 1800hp on a petrol engine.

And that £70 is a bargain! you could always convert it to a pulsejet engine

Any more bargains from where you came across this puppy?

[GazzaG60]

maybe worth 70 quid in scrap weight.

id say thats marine. its too big for a fire engine anyway. wonder what perkins motor that is for.

[quattro84]

The S4T's are in the same rate as the new BorgWarner S487-series.
So the A/r on this one must be huge, something close to 1.45 or bigger.
The big 400-series with 87mm inducer support upto 1200-1900hp.

[chrisaudi s2]

AET turbos i got it from
it will only boost to 1 bar same as standed or am i wrong in saying that?
going to make a manifold and exhaust to suit it thats if it will fit under the hood l

[quattro84]

lol these turbo's have sick pressure ratio's upto 5!
So this thing will make sick boostpressures before surging.
Don't know about the hotside, that might be far too big
What are your hp goals?

[chrisaudi s2]

how to i find out the sizes of the compresser and turbine from the turbo

[chrisaudi s2]

i know the aby will take 420 with stock parts hope to get around 800! whats the best way to go about it and in what order?

[s1rally]

Cash your oversized turbo in for a start mate its as much use as a handbrake in a canoe, you will be looking at steel internals and uprated pistons, is it for track or road