2871 vs 3071
#1
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2871 vs 3071
All else equal, what would you expect the spool difference to be between a setup with a 2871 with an A/R of .58 vs a 3071 with an A/R of .50.
I realize that this is a pretty basic question, but I've searched through a ton of build threads and looked at a bunch of dynos and the most info I've seen is that most folks consider the 3071 a bit too big, but that was with a higher A/R. I've seen a lot of folks have good luck with the 2871 and I'm not trying to reinvent the wheel. Miataman has a 3076 and is pretty happy with it, though that spools way slower than both the 2871 and 3071 from what I've seen.
That is all. Thanks in advance.
(In b4 dumb question )
I realize that this is a pretty basic question, but I've searched through a ton of build threads and looked at a bunch of dynos and the most info I've seen is that most folks consider the 3071 a bit too big, but that was with a higher A/R. I've seen a lot of folks have good luck with the 2871 and I'm not trying to reinvent the wheel. Miataman has a 3076 and is pretty happy with it, though that spools way slower than both the 2871 and 3071 from what I've seen.
That is all. Thanks in advance.
(In b4 dumb question )
#5
All else equal, what would you expect the spool difference to be between a setup with a 2871 with an A/R of .58 vs a 3071 with an A/R of .50.
I realize that this is a pretty basic question, but I've searched through a ton of build threads and looked at a bunch of dynos and the most info I've seen is that most folks consider the 3071 a bit too big, but that was with a higher A/R. I've seen a lot of folks have good luck with the 2871 and I'm not trying to reinvent the wheel. Miataman has a 3076 and is pretty happy with it, though that spools way slower than both the 2871 and 3071 from what I've seen.
That is all. Thanks in advance.
(In b4 dumb question )
I realize that this is a pretty basic question, but I've searched through a ton of build threads and looked at a bunch of dynos and the most info I've seen is that most folks consider the 3071 a bit too big, but that was with a higher A/R. I've seen a lot of folks have good luck with the 2871 and I'm not trying to reinvent the wheel. Miataman has a 3076 and is pretty happy with it, though that spools way slower than both the 2871 and 3071 from what I've seen.
That is all. Thanks in advance.
(In b4 dumb question )
#8
All else equal, what would you expect the spool difference to be between a setup with a 2871 with an A/R of .58 vs a 3071 with an A/R of .50.
I realize that this is a pretty basic question, but I've searched through a ton of build threads and looked at a bunch of dynos and the most info I've seen is that most folks consider the 3071 a bit too big, but that was with a higher A/R. I've seen a lot of folks have good luck with the 2871 and I'm not trying to reinvent the wheel. Miataman has a 3076 and is pretty happy with it, though that spools way slower than both the 2871 and 3071 from what I've seen.
That is all. Thanks in advance.
(In b4 dumb question )
I realize that this is a pretty basic question, but I've searched through a ton of build threads and looked at a bunch of dynos and the most info I've seen is that most folks consider the 3071 a bit too big, but that was with a higher A/R. I've seen a lot of folks have good luck with the 2871 and I'm not trying to reinvent the wheel. Miataman has a 3076 and is pretty happy with it, though that spools way slower than both the 2871 and 3071 from what I've seen.
That is all. Thanks in advance.
(In b4 dumb question )
#13
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eBay? Neither of those turbos will get anywhere near their power potential with those A/Rs, so it doesn't really matter. They will both spool like *** and make crappy power to boot.
If you really don't want an EFR then buy a 2863 or a 2867 with a proper T25 housing, or buy an EFR and enjoy the same power with much better spool.
If you really don't want an EFR then buy a 2863 or a 2867 with a proper T25 housing, or buy an EFR and enjoy the same power with much better spool.
#14
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This is exactly what I was thinking and why I asked my question. I only remember A/R's in .64 and .86 for these turbos. Plus, what's a brand new 3071 cost? $900 or more? OP ain't spending that...
#16
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It's totally possible that the number for the 3071 is wrong or that it's just the compressor housing A/R, but that's what I was told. Because I am finding some with that when I search.
For the 2871, I was going off the part number and A/R that the seller was reporting.
QIM77319 446179-50329 is the part number.
It led to this CHRA
https://www.atpturbo.com/mm5/merchan...e=CHRA-GT2871R
I'm guessing he might have reported that wrong as well haha. No matter...
For the 2871, I was going off the part number and A/R that the seller was reporting.
QIM77319 446179-50329 is the part number.
It led to this CHRA
https://www.atpturbo.com/mm5/merchan...e=CHRA-GT2871R
I'm guessing he might have reported that wrong as well haha. No matter...
#18
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But turbo's are fun Scott!