CO951

I need a Turbo to replace my stock k26/8. (The compressor was chewed up by a nut that somehow got in the intake and it has shaft play.) I would like to be able to get a little more power with minimal additional lag. I’ve been searching and reading a lot on turbos, but the topic is much more complex than I had imagined and I realized I could do days of research and still not really know what would be best. So I thought I’d ask for suggestions and sources to obtain it. I realize everything is a compromise, so just trying to get as close as possible.

I’m thinking a reasonable max is 350hp
spool as close to stock as reasonably possible
simple install
moderate cost

The 2 I’ve read about that seem to meet these requirements are the k27/8 and the Lindsey Super 48. Am I right about these meeting my requirements? Are there other options? New the Lindsey, starting at $1255, is more than I want to spend, but I can do it if it is the best choice.
Anyone have anything similar and in good condition they are selling?

Thanks for any advice!

Voith

I have complete k27/8 (7200 compressor) it just needs to be put together and balanced. Pm if interested.

Paulyy

You want a LR S53 turbo with stage 3 wheel. That should be the "50" trim. which acts like stock but much much more top end to give.

mahoney944

My super 65 with p-trim hotside is great. Combined with a open cat mine spool around 2800 to 3000 rpm

CO951

With the LR turbos do you need to have the ball bearing model to get the spool up you're talking about, because that is out of my price range.

When you talk about 2800-3000 what did your stock turbo do? Here at a mile high spool up suffers a lot. My stock k26/8 was more like 3800-4000. That is why spool is important to me. I'd rather have a smaller gain on top to improve the spool.

How do the LR turbos compare to a k27/8?

CO951

FYI, my signature has my mods.

Paulyy

Not sure what you mean? Full boost or turbo started spooling?

You don't have to have the ballbearings but i recommend it, you'll pick up a little more bottom end spool

The difference is that you're buying a new turbo with newer technology.

Auto_Werks 3.6

I finally put a LR super 61 #3 turbine and 8 hot side on my 944 this spring (NO ball bearings). It turned out there was a crack in my exhaust manifold as long as I owned the car and the super 61 with LR M-tune blows my stock turbo out of the water for spool. I don't regret getting the plain bearing turbo, and the super 61 was the turbo that Dave Lindsey recommended when I called asking for advice. I do have a 3" exhaust that maybe you arent sporting.

Paulyy

dynos? data logs?

when do you see full boost in 3rd gear?

CO951

I know what your getting at paully, logs are obviously best, but when you don't have them it's kinda subjective, which is why I was asking for direct comparison to the stock turbo. For example it spools up (whatever your definition of that is) 200rpm later. By comparing to a somewhat known quantity, it somewhat negates the different definitions of spool up.

CO951

It sounds like you think it spools quicker that your stock (26/6 or 8?), but it also sounds like you might have fixed your header at the same time. Is that right?

Paulyy

I doubt this. a S61 is a decent size turbo. ~600hp turbo.

JacRyann

For your target of +100bhp over stock, the K26/8 can do it just fine at 18-19psi. You just need 3" exhaust and EBC + wastegate spring upgrade. The M-tune will let you dial in the maps just right for this configuration.

The K27/8 can hit 450bhp and has more lag than your current system. Fuel pump and injectors needed for that.

Willard Bridgham 3

+1

CO951

The problem with the k26/8 for me is that living at altitude makes the turbo have to work harder. atmospheric pressure is about 12psi. So the lag is increased because I have to build 2.7psi more than sea level to just be equal. It also effects the high end. Joshua (Rogue) told me a couple years ago that the k26/8 was nearing it's limit on top because of our altitude. (FYI my 350hp goal is based more on the amount of effort/money I can put in the car. If I can easily go higher I probably would. Also to point out that low lag is more important than big power.)

The question I guess I really want to know is how much more lag does a k27/8 or any of the LR turbos have than a k26/8? if it's 2-300rpm more it would be worth it for me if it's 1k more, that's way too much.