Turbo Information Thread (Needs your contributions!)

OM616

10mm MW

572

02-27-2018, 07:10 PM #133

(02-27-2018, 04:43 PM)awsrock Thanks for posting that pdf! I have had this turbo in for about a year. With a 90cc pump it is a bit on the large side but performs adequately. Unscientifically speaking, it starts to whistle around 1800 but really does not exceed 5-7 psi unitl about 2800 rpm. Full boost is around 3100, maybe a bit lower in top gear. ALDA enrichment does not begin until about 2700-2800 as well. I have an elbe manifold that is pretty long tube so that may cost me a few hundred rpm. Overall it is still decent at the low end except in 3rd at light throttle, where sometimes downshifting is needed if I need to get going. Top end is very good and with lower gears in a 722.6 small which I am planning on swapping it should be a lot peppier off boost.

It does have an internal wastegate unlike the current breed of S200s. The compressor is not extended tip, but I am 80% sure it is billet. The turbine is the same profile as the newer ones but is smaller and has 10 blades instead of 12. The center housing appears to be the same as the new ones, so theoretically you could swap in a new front end or turbine wheel and housing, but at the moment you basically have to buy the turbo whole.

I got mine for $300 and it said it needed rebuilt. All it did was smoke a decent amount so I put new bearings and seals in and it is better, although with a large feed orifice it still smoked a bit. Rebuilt units on ebay go for like $800 so I don't know if it would be worth it when you could get a new S200sx for $550 or an SXE for $700 all said and done. I am eventually planning on around 300-330 hp with a new pump so this should wake up quite a bit while still being a good size.

I like the internal wastegate and T3 flange, makes it a lot smaller and easier to bolt on and go.. That being said, I would make a slide valve plate that would allow me to block off one of the scrolls to get it to come in earlier,( I would like to have 10 to 15 lbs by 2K) but... Looking at the compressor map, I will most likely have to bleed off some air until it is back inside the map.

I also like that it will put out a lot of air at high pressure so I think it would be worth the extra work to make it perform like I want it to on the bottom end.

A S2B turbo would be a better over all fit, but no waste gate and I the ones I have seen are with in the same price range as the S100 so I am am leaning hard to the S100 because of the capabilities it has.