RB26 Rebuild

[curtisgoodman]

thank you and i will!

[NismoS-tune]

Sticking up for you? bah I wasn't hating, just questioning. My bad.

So the 2860R-9s are the Disco potatoes? Just out of curiousity, the -9 are simply -5s with Larger turbine housings? (.86) or is the -5 with .86 different than the -9 with .86? They seem to have the same everything else. I'm still on the fence about which turbos so I'm asking all the dumb questions.

[curtisgoodman]

I thought the disco potatoes were -10's either way i wouldn't go bigger then -5's anyways unless your going for a stroker kit or a rb30 ive just read a lot about -10's being laggy otherwise... with the proper mods you can get a lot outta the -5's and they respond way better...

[tokes]

Sticking up for you? bah I wasn't hating, just questioning. My bad.

So the 2860R-9s are the Disco potatoes? Just out of curiousity, the -9 are simply -5s with Larger turbine housings? (.86) or is the -5 with .86 different than the -9 with .86? They seem to have the same everything else. I'm still on the fence about which turbos so I'm asking all the dumb questions.

The -5's have a larger compressor wheel than the -9's

The "Disco Potato" turbo is the GT2860RS, which is the same compressor and turbine wheels as the GT2860R-5, only with different non-GTR style housings. You could run them on a GTR, but the gains over the -5's would be minimal, if there are even any gains. You'd require all new charge piping, as well as new dumps and downpipes.

The -10's are a GT2871R, which shares the same turbine wheel as the GT2860R-5's, but with a significantly larger compressor wheel.

[jdmtypes]

I thought the disco potatoes were -10's either way i wouldn't go bigger then -5's anyways unless your going for a stroker kit or a rb30 ive just read a lot about -10's being laggy otherwise... with the proper mods you can get a lot outta the -5's and they respond way better...

I'm still not convinced on the whole way too laggy thing with the 10's, I'm getting boost on at 3500-3800 which I dont think is bad. What's so hard about with a quick downshift if needed?? Had a rip in GTR Dad's car, he is running 2860's like yourself Curtis. Very very quick spool great track course car set up.

[curtisgoodman]

That sounds like not to much lag im just going on what ive heard and read. I guess it all depends on what rpm you want boost at max, what boost you wanna run and what you want your car to behave like on the road/track. the setup i have running could be considered a bit laggy as well... i start spooling a 3k rpm but dont get 1.8 bar till late in the 4k rpm range... if i change the stock boost piping for hard pipes i might get that a bit earlier though (TBA).

[MikeM@Ztune]

The bigger the turbo, the bigger the lag. But of course how laggy a car is is somewhat subjective!

There is a lot you can do to reduce lag with bigger turbos though, such as leaning the A/F and adding timing pre-boost, and eliminating any intake or exhaust restrictions, such as using a bigger IC, bigger IC piping, high flow filters with a good suction kit, big turbo elbows and down pipes, and a good test pipe. Bigger displacement, over-size valves and port work will also help.

Another great lag reducer is NOS! You can have it run at low-RPM, and then cut out as the boost comes on.

[NismoS-tune]

What kind of compression did you end up with? Low 8s? How bout your tune, what kinda of AFRs are you running throughout the powerband?

[curtisgoodman]

around 3.5k - 4k, 11.7 a/f then the meth kicks in and drops it down to around 10.5 a/f, then at around 5.5k goes to 11 a/f till redline, something close to that... im just going off memory from the dyno screen...

[curtisgoodman]

i was going for around 8.5 comp but i couldnt tell you what i got...

[Eber]

who would be crazy enough to run N20 and huge turbos....hahahaha. I wanna go for a ride curt!~

[curtisgoodman]

well we'll have to go for a ride then wont we lol...

[curtisgoodman]

Gave the beast a wash and cleaned up the rims...

[curtisgoodman]

Holy im riding low in the back lol... must be all those subwoofers and all that water meth weighing me down or maybe its always in the squatting position cause its ready to take off lol...

Need suspension!!!

[curtisgoodman]

im going to take a side pic and empty my trunk, i swear the front to rear height was closer before... hrrmmm...

Anyone have coil overs for sale pm me please

On another note if anyone has similar rims to mine let me know... i have a couple questions for you...