TT ***S290*** thread :)

[Gogoggansgo]

I asked Team NDR of a comparison between the S290 and G25-550 here's their response.

"Unless you're chasing huge power and a full circuit car the S290 is better suited turbo for this platform, it keeps the power band in a very usable window and still gives a good enough mid-range performance but a good balance of top end too."

It's definitely S290 season

Personally I’d rather has the G series turbo especially if it’s track day car, because if you lose oil pressure in a corner. It’s not going to destroy the turbo being it’s ball bearing however for the average person or the drag guys like Wes, 280,290 or whoosh hybrid is the way to go

 

[TyphoonFiST]

In my experience, the S280 with aux fuel easily produces boost beyond what the stock motor can handle.

I ran 32-34 lbs for a bit. The S280 was plenty happy. The motor? It got very, very unhappy.

Even if you build the motor, the next question is the transmission and how much it can "reasonably" handle for long.

So you Created Lawn Art?

 

[cidsamuth]

So you Created Lawn Art?

There wasn't enough left of the block to use in the lawn.

 

[TyphoonFiST]

There wasn't enough left of the block to use in the lawn.

Time to Get a built Trans from Colby@ Clarke transmission with all the bells and whistles* i know i did

 

[cidsamuth]

Time to Get a built Trans from Colby@ Clarke transmission with all the bells and whistles* i know i did

Misunderstanding . . . the block got window'd. The transmission was okay.

But, I don't believe for a second that we can build the motor, turbo, and boost to some crazy HP level and the transmission handle it long term. Clarke or not.

My point was only that the S280 can get you beyond the stock motor limits, and likely well beyond the transmission. So, I'm following this to see what the S290 offers that the S280 doesn't.

 

[IDailyDriveABean]

Personally I’d rather has the G series turbo especially if it’s track day car, because if you lose oil pressure in a corner. It’s not going to destroy the turbo being it’s ball bearing however for the average person or the drag guys like Wes, 280,290 or whoosh hybrid is the way to go

IMO if it's a track car there should already be mitigation to prevent such things from happening. A baffled oil pan and a proper oil accumulator set up will solve that. I can't justify the g series since the kits are double the price of the S280 and prob S290

 

[M-Sport fan]

IMO if it's a track car there should already be mitigation to prevent such things from happening. A baffled oil pan and a proper oil accumulator set up will solve that. I can't justify the g series since the kits are double the price of the S280 and prob S290

If all else fails there is always a full dry sump setup as well.

But yeah, that by itself, run$ as much (or more??) coin as a fully built engine with a BB big snail to go with it.

 

[MO15Fiesta]

I'm not saying a stock engine will live forever with an s280 being maxed out, but the one on my car is tapped out right now (seeing 90% WGDC over 6000rpm and boost is falling off by about 6~psi at redline) and the engine is happy so far. It looks like the s290 offers superb flow in higher RPM's due to a larger A/R housing and a slightly larger exhaust wheel. Taking into consideration that we spin this engine pretty high sometimes, I think that will be very beneficial.

 

[Woods247]

Personally I’d rather has the G series turbo especially if it’s track day car, because if you lose oil pressure in a corner. It’s not going to destroy the turbo being it’s ball bearing however for the average person or the drag guys like Wes, 280,290 or whoosh hybrid is the way to go

I haven’t experienced oil starvation or oil pressure issues on track in this car. I don’t recall hearing of anyone having these problems actually. Baffles are cheap and easy to install but I haven’t bothered..

The G series is significantly more expensive, more complicated to setup/tune and a bigger pain in the ass to install on this car. The G series is cool but this turbo seems like a simpler, more cost effective option that’ll yield more power than the Fiesta ST can use effectively anyway. Grip under acceleration is always the issue, especially at corner exit on road courses.

 

[cidsamuth]

I'm not saying a stock engine will live forever with an s280 being maxed out, but the one on my car is tapped out right now (seeing 90% WGDC over 6000rpm and boost is falling off by about 6~psi at redline) and the engine is happy so far. It looks like the s290 offers superb flow in higher RPM's due to a larger A/R housing and a slightly larger exhaust wheel. Taking into consideration that we spin this engine pretty high sometimes, I think that will be very beneficial.

How much PSI are you pushing to be maxing out the S280?

I pushed 32-34 under track use. 4-port aux fuel. Didn’t see any boost drop off, but the motor grenaded.

Tuners I’ve talked to say 27-28 is the recommended max boost for stock motor. Might be able to go a little higher under street conditions where you aren’t necessarily going WOT all day long. The S280 can live under these conditions all day.

That said, I’m not poo-pooing the 290. I’m looking forward to seeing the advantages and under what conditions.

 

[Jabbit]

When are you installing this?

 

[Mega ST]

How much PSI are you pushing to be maxing out the S280?

I pushed 32-34 under track use. 4-port aux fuel. Didn’t see any boost drop off, but the motor grenaded.

Tuners I’ve talked to say 27-28 is the recommended max boost for stock motor. Might be able to go a little higher under street conditions where you aren’t necessarily going WOT all day long. The S280 can live under these conditions all day.

That said, I’m not poo-pooing the 290. I’m looking forward to seeing the advantages and under what conditions.

Check out his track videos. He pushed 37psi on a couple passes. His stock motor is handling it quite well pass after pass spinning upwards of 7500rpm. All in the tune.

 

[MO15Fiesta]

How much PSI are you pushing to be maxing out the S280?

I pushed 32-34 under track use. 4-port aux fuel. Didn’t see any boost drop off, but the motor grenaded.

Tuners I’ve talked to say 27-28 is the recommended max boost for stock motor. Might be able to go a little higher under street conditions where you aren’t necessarily going WOT all day long. The S280 can live under these conditions all day.

That said, I’m not poo-pooing the 290. I’m looking forward to seeing the advantages and under what conditions.

It peaks at 37-38psi. Drops off to around 32-33 past 6500rpm. We are spinning it extremely hard, obviously haha.

 

[MO15Fiesta]

When are you installing this?

I'm hoping in the next week or two!

 

[cidsamuth]

It peaks at 37-38psi. Drops off to around 32-33 past 6500rpm. We are spinning it extremely hard, obviously haha.

Stock head bolts?

 

[MO15Fiesta]

Stock head bolts?

100% oem 15,000 mile long block. Unopened, no internal work, etc.

 

[slopoke]

I'm only assuming here, that the S290 is more comparable to a Garrett GTX 2860R Gen II. With that said, I'd opt for the S290, primarily because you don't have to use the proprietary adapter, to get the turbo to mount to a stock 3 bolt pattern exhaust manifold flange.

 

[TyphoonFiST]

I'm only assuming here, that the S290 is more comparable to a Garrett GTX 2860R Gen II. With that said, I'd opt for the S290, primarily because you don't have to use the proprietary adapter, to get the turbo to mount to a stock 3 bolt pattern exhaust manifold flange.

Not unless you go to Will @ Worfab....get the OEM LOg with V-band welded! No more ATP adapter poopoo

 

[MO15Fiesta]

Well... just prior to swapping for the s290, the inevitable happened. We will have it back on the road quickly and with the new turbo

View: https://youtu.be/zBbi3e9uT4E

 

[Mega ST]

Man, that blowing chunks sound and then the sounds of silence is gut wrenching. Been there done that Lol! You def pushed it to the limit. Look fwd to the next phase.