ebay 88mm turbo
TECH Fanatic
Joined: Jun 2013
Posts: 1,163
Likes: 16
From: Avon, Ohio
Yes actually!
With the 76mm I got a best of 139.46MPH after switching to the 88mm that increased to 144.97MPH! Thats same boost level, same timing, just tweaking A/F for the increased airflow.
With similar 60' I got a 9.80 out of the 76mm, ET dropped to 9.64 with the 88mm.
With the 76mm I got a best of 139.46MPH after switching to the 88mm that increased to 144.97MPH! Thats same boost level, same timing, just tweaking A/F for the increased airflow.
With similar 60' I got a 9.80 out of the 76mm, ET dropped to 9.64 with the 88mm.
9 Second Club
Joined: Jan 2013
Posts: 394
Likes: 0
From: Just outside Memphis
Yes actually!
With the 76mm I got a best of 139.46MPH after switching to the 88mm that increased to 144.97MPH! Thats same boost level, same timing, just tweaking A/F for the increased airflow.
With similar 60' I got a 9.80 out of the 76mm, ET dropped to 9.64 with the 88mm.
With the 76mm I got a best of 139.46MPH after switching to the 88mm that increased to 144.97MPH! Thats same boost level, same timing, just tweaking A/F for the increased airflow.
With similar 60' I got a 9.80 out of the 76mm, ET dropped to 9.64 with the 88mm.
TECH Fanatic
Joined: Jun 2013
Posts: 1,163
Likes: 16
From: Avon, Ohio
Yes actually!
With the 76mm I got a best of 139.46MPH after switching to the 88mm that increased to 144.97MPH! Thats same boost level, same timing, just tweaking A/F for the increased airflow.
With similar 60' I got a 9.80 out of the 76mm, ET dropped to 9.64 with the 88mm.
With the 76mm I got a best of 139.46MPH after switching to the 88mm that increased to 144.97MPH! Thats same boost level, same timing, just tweaking A/F for the increased airflow.
With similar 60' I got a 9.80 out of the 76mm, ET dropped to 9.64 with the 88mm.
how is the "lag" on the street on comparison?
My wastegate is 17-18PSI and I run it 21-22lbs on the controller. The gap between the 76 and 88 seems to stay consistent as boost rised. Under conditions the 76mm would run 136MPH the 88 ran 141, when the 76mm would run 139MPH the 88 ran 145.
I went to give it hell and blew the diff out of the car! I was gonna give it 26PSI for ***** on the last pass of the day but soon as power came on the shotgun went off and I didnt get very far. I threw another diff in it yesterday and shes back on the road. But something stronger is needed for spring!
The 88mm is certainly a little laggier. General driving around and on the foot brake the 76mm comes up quicker for sure. But the 88mm isnt bad at all and once it gets going comes on quick. It maybe takes a second longer on the footbrake to get 5lbs but once I adjusted for the lag at staging I could get the same 60' out of both turbos so doesnt seem too bad for the power gained up top.
The 88mm is certainly a little laggier. General driving around and on the foot brake the 76mm comes up quicker for sure. But the 88mm isnt bad at all and once it gets going comes on quick. It maybe takes a second longer on the footbrake to get 5lbs but once I adjusted for the lag at staging I could get the same 60' out of both turbos so doesnt seem too bad for the power gained up top.
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Verdad Gallardo TECH Fanatic
Joined: Jun 2013
Posts: 1,163
Likes: 16
From: Avon, Ohio
My wastegate is 17-18PSI and I run it 21-22lbs on the controller. The gap between the 76 and 88 seems to stay consistent as boost rised. Under conditions the 76mm would run 136MPH the 88 ran 141, when the 76mm would run 139MPH the 88 ran 145.
I went to give it hell and blew the diff out of the car! I was gonna give it 26PSI for ***** on the last pass of the day but soon as power came on the shotgun went off and I didnt get very far. I threw another diff in it yesterday and shes back on the road. But something stronger is needed for spring!
The 88mm is certainly a little laggier. General driving around and on the foot brake the 76mm comes up quicker for sure. But the 88mm isnt bad at all and once it gets going comes on quick. It maybe takes a second longer on the footbrake to get 5lbs but once I adjusted for the lag at staging I could get the same 60' out of both turbos so doesnt seem too bad for the power gained up top.
I went to give it hell and blew the diff out of the car! I was gonna give it 26PSI for ***** on the last pass of the day but soon as power came on the shotgun went off and I didnt get very far. I threw another diff in it yesterday and shes back on the road. But something stronger is needed for spring!
The 88mm is certainly a little laggier. General driving around and on the foot brake the 76mm comes up quicker for sure. But the 88mm isnt bad at all and once it gets going comes on quick. It maybe takes a second longer on the footbrake to get 5lbs but once I adjusted for the lag at staging I could get the same 60' out of both turbos so doesnt seem too bad for the power gained up top.
What is the race weight of your chassis?
I'm really surprised you picked up that much. The 7675CEA is a heavy hitter in the T4 world. That exh housing on the 88 sure looks big in the comparison pics above, looks larger than my 1.25 T4 S476. Do you measure back pressure?
Wonder if I'd gain anything over a "billet" T4 S476. Any side by side pics of these new 88's next to an S400 frame turbo out there?
Wonder if I'd gain anything over a "billet" T4 S476. Any side by side pics of these new 88's next to an S400 frame turbo out there?
I'm really surprised you picked up that much. The 7675CEA is a heavy hitter in the T4 world. That exh housing on the 88 sure looks big in the comparison pics above, looks larger than my 1.25 T4 S476. Do you measure back pressure?
Wonder if I'd gain anything over a "billet" T4 S476. Any side by side pics of these new 88's next to an S400 frame turbo out there?
Wonder if I'd gain anything over a "billet" T4 S476. Any side by side pics of these new 88's next to an S400 frame turbo out there?
I don't currently have a way to measure back pressure.
Yea I don’t buy into the claimed China AR housing sizes. I think they look the other turbos on ebay and copy the AR numbers without actually knowing/caring. My 1.25 housing may be a .90… not sure how we would know. I hear you can stuff clay in the hotside and get a semi accurate AR measurement. The measuring process seems pretty vague!
http://turbobygarrett.com/turbobygar...housing_sizing
http://turbobygarrett.com/turbobygar...housing_sizing
TECH Fanatic
Joined: Jun 2013
Posts: 1,163
Likes: 16
From: Avon, Ohio
Yea I don’t buy into the claimed China AR housing sizes. I think they look the other turbos on ebay and copy the AR numbers without actually knowing/caring. My 1.25 housing may be a .90… not sure how we would know. I hear you can stuff clay in the hotside and get a semi accurate AR measurement. The measuring process seems pretty vague!
http://turbobygarrett.com/turbobygar...housing_sizing
http://turbobygarrett.com/turbobygar...housing_sizing
