that's not how they work.

 

Well, reporting back now that I have the 4828 installed.

This is just butt dyno results on something that is extremely conservatively and safely tuned (Read: Basically completely untuned, on basemap), but even as is it reminds me a LOT of my old SR20 T25 turbo, as opposed to my ch..ch..churbo.

Boost is close to being an on/off switch like it was with the old SR20 T25.

So far, I'm -extremely- happy with it. I can't wait to get this thing tuned, spool is damn near instant.

 

pics and logs

 

^^^

It sounds really nice. Glad you're enjoying it. Which churbo did you have on it before?

 

NEED SPOOL DATA ASAP 4TH GEAR LOG PLOX

Glad it is working out.

 

Getting pic updates to build thread in today guys. And trying to figure out my short, but that's another topic.

I'll probably be getting and posting spool data with logs tomorrow, assuming that classes don't CONSUME MY SOUL.

(Edit) The CXRacing 2560 analogue. Don't ever get it. It's crap.

 

62mm turbine wheel means it's possible to make big power on a 0.64a/r. For reference, a 2871R is ~54mm and a T3-frame 3071R is 60mm.

If the wheel is <58mm, I'd do the 0.86a/r. Above that, do the 0.64a/r.

 

mines 67mm iirc

 

I went back and found my measurements I took. it's 64mm, where a regular t3 is about 4-5mm smaller.

My funky Chinacharger has a crazy inducer on the turbine, but the same exact profile/diameter exducer compared to a real t3 wheel.


you can see this here:

 

Update for you guys....

Something isn't quite right with the turbo setup. I can't figure out what it is easily, I first thought it was a busted coupler or something, then maybe there's an exhaust leak@the turbine housing, I just don't know. There's an issue building boost and holding boost that I'll worry about this weekend.

But even in the current state, untuned, in 4th gear, I was able to enter boost before 2krpm.

Even in the current "Not Really Working and needs a **** ton of work done on it" state, I can definitely see why that local tuner made such a big deal about this turbo.

 

It's nice to see people trying out different turbos, not just the same 'ole T2 garretts anymore.

I'm eager to see your results and how they compare to the garretts and the EFR.

Good luck and props for being the first to try the 4828

 

I can enter boost backing out of my driveway...

 

did I miss the pics and the logs?

 

If I can get everything figured out this weekend, I'll do it broski.

Overloaded IRL - no time until weekend for logs.

Pics are in mah build thread, FWIW.

 

Week ended. Now started a new one. Please pay up.

 

Soz bro, the last couple weeks of my program are way heavier than I anticipated.

I did **** all last weekend, only did work on final projects. Same for this weekend. Same for next. Same for every day involved until final's week it appears.

I'll definitely get them ASAP I promise, but I have no ETA now. I have to fix the boost issues which aren't an immediate or easy fix.

 

162kpa by 3krpm - running off a obviously crappy wastegate.

Logs in my build thread.

 

I'm wanting this turbo now. Unfortunately, it would drive me to find a stouter clutch that's either expensive or not very street-able.

 

FM2 clutch is cheap and very streetable.

 

It spools /really/ similarly to the 2560, even **** all untuned.

My worry is horsepower - I'll have to dyno it asap. The 4828 is good for up to ~400 rwhp, although unknown as to what the max is on a BP engine.