RB26 Turbo Selection

[ButikoferSkyline]

I am looking at upgrading my turbos.

Not sure to go with gt2860r-7's or gt2860r-9's

I see the -7 are rated for around 500hp and the -9 for around 560hp.


Does anyone have experience with the -9's? and what rpm does boost come on compared to the -7's.


Car will be used mostly for street with a few 1/4 mile drag events throughout the year (don't want a cage so 11.5(s) 1/4mile is adequate).


I will be keeping engine internals stock. Will upgrade oil pump, injectors, fuel pump, possibly cams.

thx

[Fred-R]

http://www.gtr.co.uk/forum/59003-gt2860r-5-vs-gt2860r-7-a.html

http://www.gtr.co.uk/forum/169885-turbos-garret-2860-7-9-a.html

http://www.sau.com.au/forums/topic/410617-garret-7s-vs-9s-which-one/

Here you go...

I personnaly have the -5s, and i LOVE 'em! At wot, they re kinda scary, haha, but thats me

[ButikoferSkyline]

What rpm does full boost come on with the -5's?

Also do you have forged internals, cams?

tx

[Fred-R]

yeah, i have a fully built engine. full boost comes around 4200-4300

[Harvey]

I would recommend -5s as well. As long as your motor is healthy with metal head gaskets and drop in cams like Tomei pon cams. It would have some kick ass power with pretty good response.


Sent from my iPhone using Tapatalk

[curtisgoodman]

i was once in your shoes a while back... go -5's you'll never go back

fully built w/forged internals
tomei procams
water meth
28psi

28psi hits by 4800rpm on my setup

[Dragon Humper]

T78 single. Twins are a waste of time. I made more power than that at only 17psi and full boost at 5000rpm on a T88H. Use an Ebay special twin scroll and you cant lose. I recently went for a ride in a stockish car with -5s in it and was underwhelmed....granted the tune was most likely very conservative. Big torque can only be achieved with cool intake temps and big ignition timing...you can't do that with little turbos making a lot of heat.


Jon.

[tryingtobebest]

T78 single. Twins are a waste of time. I made more power than that at only 17psi and full boost at 5000rpm on a T88H. Use an Ebay special twin scroll and you cant lose. I recently went for a ride in a stockish car with -5s in it and was underwhelmed....granted the tune was most likely very conservative. Big torque can only be achieved with cool intake temps and big ignition timing...you can't do that with little turbos making a lot of heat.


Jon.

^WORD!)

Totally agree but i would rec not going HUGE single, something like GT35 or BW 8875 (S362) or even S360 to get everything connected and going, upgrade to a bigger one after everything is in its place is easy later one!

[Fred-R]

it all depends on what your goals are... 600whp and 543lbs/Tq, close enough to my goals...!

[Redone]

Nice whats your set up and boost levels for 600whp and 543tq?

it all depends on what your goals are... 600whp and 543lbs/Tq, close enough to my goals...!

[Fred-R]

forged internals, -5s obviously, ID1000cc, uprated everything, type b cams+ported head, full decat exhaust, tomei mani, mines turbo outlets, nismo oil pump, blah blah, goes on and on.... 600whp/543Tq @ 23psi... On mustang!

[red35]

So that's 600whp and not 600awhp right?