GT2560R-9's

[curtisgoodman]

Hey does anyone have any experience with these turbo's? If i dont get the GT2680R-5's i was planning on getting, then im going with these.

I know they say 500-550hp max but i was more curious about how long they take to spool up.

link to my build thread for engine info:

http://forums.gtrcanada.com/showthread.php?t=37214

If anyone has used these let me know what setup you have them on please!

thanks

[mcfly]

same as r34 n1's

[kelaog]

same as r34 n1's

The r34 n1's are actually the 2860r-7's, but garrett lists them as direct replacements anyways...

The -7's are a bit larger actually but use a larger frame. I'd assume they'd spool just as quick as mcfly said...

Should be a nice turbo setup

[GTR-Dad]

I don't see a 2860R-9 listed on Garrett's site.

A link to a compressor and turbine map, or even a link to the product, for what you're considering would help.

Dan

[tokes]

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT25/GT2560R_707160_9.htm

He's talking about the 2560 not the 2860

[curtisgoodman]

Yeah i was just curious if anyones used them before plus i dont really know how to read those compressor maps... does anyone have a link to information on those and how to read them?

Anyways thanks for all the input!

[mcfly]

The r34 n1's are actually the 2860r-7's, but garrett lists them as direct replacements anyways...

The -7's are a bit smaller actually but use a larger frame. I'd assume they'd spool just as quick as mcfly said...

Should be a nice turbo setup

no, the 2860's are a lot larger then the r34 n1's.
r34 n1's do use gt2560-9

[GTR-Dad]

Yeah i was just curious if anyones used them before plus i dont really know how to read those compressor maps... does anyone have a link to information on those and how to read them?

Anyways thanks for all the input!

Here's a good link. You might check out the other tech centre pages too.

http://www.turbobygarrett.com/turbobygarrett/tech_center/turbo_tech103.html

A quick look at the compressor map Tokes posted shows that the 2560-9 you're looking at about 80-85% of the flow a 2860R-5 would give you at a pressure ratio of 2.25 (1.2 bar or so) at a comparable efficiency.

You could expect a pair of these ones to spool earlier, but run out of breath earlier than the 2860R-5. It falls pretty much between the 2860R-5 and 2860R -7, so would probably be a good balance between power and responsiveness.

Having said that, it's always nice to get in touch with people who are running a similar setup and see what they've got to say.

Cheers,
Dan

[curtisgoodman]

holy thats a lot of math, brings me back to the good 'ol days of math and physics...

so quicker spool for the 2560's and longer legs for the 2860's but both fall into the sweet zone on charts so thats good...

[kelaog]

no, the 2860's are a lot larger then the r34 n1's.
r34 n1's do use gt2560-9

I actually meant that the other way around. :P. oops, edit.