Garrett GTX2863's
12-29-2011, 10:21 AM
#1
Garrett GTX2863's
So we just received our GTX2863's for our Twin turbo HR build that we are doing. Dimensionally the are the same as the 2860's with a lot more flow potential up top. We are looking to get the best possible spool with out sacrificing power up high. we are using .63 exhaust housings with V band outlets. They also have a .86 housing available. They also have a GTX2867R option which we might switch to later if we wanna make bigger power...some pics for ya guys
Detailed pics
GTX2863 Compressor Map compared to a GT2860RS(disco Potato)
GTX2863R next to a GT2871
Last edited by Vince@R/TTuning; 12-29-2011 at 11:24 AM.
12-29-2011, 12:01 PM
#7
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12-29-2011, 12:45 PM
#9
Your correct on the 2871r's....i was looking at that compressor map and typed 2860's in...
This is for our GS400 drift car so we are looking for instant spool... but i think with the extended flow up top it wound be far off the 2871's with alot better spool... I think over all alot of people run too large of turbos and run them at low boost and the aren't as efficient as they could be. If I wanted big power we probably would have done a single set up...
This is for our GS400 drift car so we are looking for instant spool... but i think with the extended flow up top it wound be far off the 2871's with alot better spool... I think over all alot of people run too large of turbos and run them at low boost and the aren't as efficient as they could be. If I wanted big power we probably would have done a single set up...
12-29-2011, 01:09 PM
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Your correct on the 2871r's....i was looking at that compressor map and typed 2860's in...
This is for our GS400 drift car so we are looking for instant spool... but i think with the extended flow up top it wound be far off the 2871's with alot better spool... I think over all alot of people run too large of turbos and run them at low boost and the aren't as efficient as they could be. If I wanted big power we probably would have done a single set up...
This is for our GS400 drift car so we are looking for instant spool... but i think with the extended flow up top it wound be far off the 2871's with alot better spool... I think over all alot of people run too large of turbos and run them at low boost and the aren't as efficient as they could be. If I wanted big power we probably would have done a single set up...
on a side note.
im wishing i went a little bigger turbo's on my set up but ran out of budget
the 2871's dont breath enough for the 4.07L stroker. spools fast as **** though haha 600 tq by 5000 rpm 
12-29-2011, 02:45 PM
#12
I overlayed so compressor maps for comparision...these are pretty much the reason I was excited for these turbos...
Also I talked to Sam at GTM and he said some of his stage 2 kits are 2860's with .86 housings and some of them are 2871's
Also I talked to Sam at GTM and he said some of his stage 2 kits are 2860's with .86 housings and some of them are 2871's
12-29-2011, 03:10 PM
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if i had some extra cash and there were turbo's readily available i would have went bigger but i was outa money after getting brakes and the garrets i wanted were a month out they told me so i just had em put it back together XD wanted to do twin gtx 3071's
12-29-2011, 05:39 PM
#17
I have a pretty cool spreadsheet I designed several years ago that you guys may find useful. It is a compressor math spreadsheet that I drafted and a turbo expert on the SR20 platform helped me tighten up. It allows you to enter displacement and other parameters and then allows you to plot the points on the maps from Garret. If you guys think it would be helpful, i can post it up.
Ah heck, I'm proud of it so here is the link. Its called Compressor Math...its the first link. You can read the description of what it does. You plot 3 cylinders at a time since you are running twins, just half the displacement, etc.
Ah heck, I'm proud of it so here is the link. Its called Compressor Math...its the first link. You can read the description of what it does. You plot 3 cylinders at a time since you are running twins, just half the displacement, etc.
Last edited by f150intally; 12-29-2011 at 06:00 PM.
12-29-2011, 06:17 PM
#18
But no, don't worry about it, your car is still beast 
I have a pretty cool spreadsheet I designed several years ago that you guys may find useful. It is a compressor math spreadsheet that I drafted and a turbo expert on the SR20 platform helped me tighten up. It allows you to enter displacement and other parameters and then allows you to plot the points on the maps from Garret. If you guys think it would be helpful, i can post it up.
Ah heck, I'm proud of it so here is the link. Its called Compressor Math...its the first link. You can read the description of what it does. You plot 3 cylinders at a time since you are running twins, just half the displacement, etc.
Ah heck, I'm proud of it so here is the link. Its called Compressor Math...its the first link. You can read the description of what it does. You plot 3 cylinders at a time since you are running twins, just half the displacement, etc.
Last edited by Resmarted; 12-29-2011 at 06:19 PM.
12-29-2011, 06:26 PM
#20
. IMHO for power levels over 600whp I wouldn't run anything less than t3's. I know people have run t28's out there (and similar via td06's), but you want a big turbo and a little t25 probably will choke a bit of max power.
I'm surprised honestly that they'd even make a gt30 frame with a t25 exhaust housing. Maybe they do flow that well, and it's just in my head
?