Chinacharger GT2870 vs Garrett GT2554 with Dynochart
#22
If it is wheel design that makes the difference.....Maybe the next person should by a chhurbo from the same manufacturer as Brain.
Brain: Where did you buy yours? Mine is an emotor usa, same as levnubin. Maybe some churbo manufacturers do a little more R&D when ripping off an design.
Brain: Where did you buy yours? Mine is an emotor usa, same as levnubin. Maybe some churbo manufacturers do a little more R&D when ripping off an design.
Which defeats the whole purpose of a chinacharger.
#25
Boost Czar
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,729
Total Cats: 4,126
I dug up this pic:
DSCN7789.jpg?t=1239121340
this is supposed to be a Chinacharger GT2860 comparable turbo. Source: https://www.miataturbo.net/showthrea...hlight=measure
The above does not have the turbine design of a true Garrett GT2860. It has the turbine of a GT25 series.
It should look more like this:
less blades and greater spacing.
However, 45.5mm turbine inducer suggests a turbine smaller than a GT2052... get what im getting at now?
and FWIW, that compressor wheel in his post looks to be identical to mine...and it should NOT be. A real Garrett GT2560 or 2860 have a 60 trim compressor wheel... his measurements suggest a 50 trim wheel like mine.
DSCN7789.jpg?t=1239121340
this is supposed to be a Chinacharger GT2860 comparable turbo. Source: https://www.miataturbo.net/showthrea...hlight=measure
The above does not have the turbine design of a true Garrett GT2860. It has the turbine of a GT25 series.
It should look more like this:
less blades and greater spacing.
However, 45.5mm turbine inducer suggests a turbine smaller than a GT2052... get what im getting at now?
and FWIW, that compressor wheel in his post looks to be identical to mine...and it should NOT be. A real Garrett GT2560 or 2860 have a 60 trim compressor wheel... his measurements suggest a 50 trim wheel like mine.
#27
Senior Member
iTrader: (3)
Join Date: Nov 2009
Location: Royal Palm Beach, FL
Posts: 725
Total Cats: 5
If it is wheel design that makes the difference.....Maybe the next person should by a chhurbo from the same manufacturer as Brain.
Brain: Where did you buy yours? Mine is an emotor usa, same as levnubin. Maybe some churbo manufacturers do a little more R&D when ripping off an design.
Brain: Where did you buy yours? Mine is an emotor usa, same as levnubin. Maybe some churbo manufacturers do a little more R&D when ripping off an design.
#29
I would like to see the comparison between an actual 2871 curve and this. Some of the difference is related to the overall larger turbo. I am not impressed with that 2554 boost line. I have a pea shooter exhaust as well and my churbo has better boost threshold than the said 2554 line. So... Someone mail me a 2554. I will go make sexy dynos and we will settle this. Truth is, I am not convinced by "This larger turbo has a worse boost threshold and it is because it is chinese." I know there is a difference, but it is doubtful that it is that large.
#31
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Thread
Thread Starter
Forum
Replies
Last Post
FAB
Prefabbed Turbo Kits
216
03-22-2017 04:00 PM