GT3076R turbo questions!
I will be using a Snow meth kit. I know they come with the two different size nozzles...I believe a 375ml and a 625ml (not 100% certain on size). Would you suggest the 625ml nozzle to provide more meth and decrease my injector duty cycle or would the 375ml be sufficient?
I ran the 375ml on the stock turbo and injectors with a walbro 255 and at 25psi, my IDC was @ 96%. That was with 50/50 meth water mix. I'll probably run a 80/20 meth water mix with the 3076r.
I ran the 375ml on the stock turbo and injectors with a walbro 255 and at 25psi, my IDC was @ 96%. That was with 50/50 meth water mix. I'll probably run a 80/20 meth water mix with the 3076r.
750's will probably be fine, it depends on how much meth you're injecting. The more meth injected, the less gasoline is need thus smaller injector needed.
I'm doing 780's with my 35R. I'm using the Aquamist HSF-5 for meth. It bases the meth injection on injector duty cycle. So if I run a 1000cc injectors the duty cycle will be very low and thus the meth injection will be low. going with 780's will get me ~ 80% IDC and more meth injected (more power)
I'm doing 780's with my 35R. I'm using the Aquamist HSF-5 for meth. It bases the meth injection on injector duty cycle. So if I run a 1000cc injectors the duty cycle will be very low and thus the meth injection will be low. going with 780's will get me ~ 80% IDC and more meth injected (more power)
coz i am having my HFS-5 installed too, after the turbo upgrade.. and i know it sprays more when the injectors spray more...
so i guess anything between 750 - 780 would be best in this case? or just go with 780?
You can certainly feel the 50trim spool faster that is from beginning of boost build up to max boost eventhough you may or may not realize the diff. in RPM.
It happen in a shorter span of time.
I've driven an 8 with 2.3L and 3065 and I didn't like it at all. Even with the stroker you still have to downshift all the time. There's still a noticeable about of lag especially at partial throttle. I suggest before going with any particular turbo ... finding someone that already has it and drive their car.
I've driven an 8 with 2.3L and 3065 and I didn't like it at all. Even with the stroker you still have to downshift all the time. There's still a noticeable about of lag especially at partial throttle. I suggest before going with any particular turbo ... finding someone that already has it and drive their car.
Scorke
I think the real question should be about power band compared to stock. If you look at a stock turbo setup and see that it makes 300/300 then how does that compare to the aftermarket turbo in terms of rpm. If I were to purchase a 30R at what RPM does it start to make 350tq and where does it make 350hp? Granted alot of bigger turbos make huge top end power but only if you spin the motor to crazy levels. If you don't you have a very narrow powerband.
If the stocker hits 300TQ at 3400 and it carries 300HP at 4900-7300 thats a nice DD powerband. Now compare that to the 30R and see where the power is.
Last edited by Jeff_Jeske; Dec 7, 2007 at 09:10 AM.
I agree but the question was asked.
I think the real question should be about power band compared to stock. If you look at a stock turbo setup and see that it makes 300/300 then how does that compare to the aftermarket turbo in terms of rpm. If I were to purchase a 30R at what RPM does it start to make 350tq and where does it make 350hp? Granted alot of bigger turbos make huge top end power but only if you spin the motor to crazy levels. If you don't you have a very narrow powerband.
If the stocker hits 300TQ at 3400 and it carries 300HP at 4900-7300 thats a nice DD powerband. Now compare that to the 30R and see where the power is.
I think the real question should be about power band compared to stock. If you look at a stock turbo setup and see that it makes 300/300 then how does that compare to the aftermarket turbo in terms of rpm. If I were to purchase a 30R at what RPM does it start to make 350tq and where does it make 350hp? Granted alot of bigger turbos make huge top end power but only if you spin the motor to crazy levels. If you don't you have a very narrow powerband.
If the stocker hits 300TQ at 3400 and it carries 300HP at 4900-7300 thats a nice DD powerband. Now compare that to the 30R and see where the power is.
I have a 3065 on a 2.3 block and am pretty happy with spool. It is laggier than stock, but certainly not awful. What I like about it is it doesn't have the on-off tendencies while driving around town, but any time I'm above 3500 RPM it's pretty much ready to go.
Regarding torque curves, I have never had my car on a dyno but based on the DataLogLab dyno calcs I hit 300 TQ at about 4000 RPM and that continues to climb to over 350TQ by 4500 RPM. The torque curve stays above 300 from there to redline. All-in-all it makes the car a lot of fun to drive, but more relaxed in town.
-Paul
I think alot of the lag people talk about is the loss of twitch or transition mentioned above. Say your are cruising down the strip at 25mph in 3rd gear and a stop light turns yellow. With the stocker you can dip the throttle and it will spool right up. On a bigger turbo it takes noticably longer to begin to spool.
The bigger turbo will make more power up top but the loss of low end is noticed every time you drive the car. Its more like driving a regular lancer until you really put your foot into. I like the twitchiness of the stock turbo. I like instant spool simply by pressing the pedal down 1/4 inch.
I think a stroker and the green would be the best of both worlds. Better than stock spool, more lowend torque, and more airflow up top. It may not have a blazing top end but who cares.... shift earlier and enjoy the same power.
The bigger turbo will make more power up top but the loss of low end is noticed every time you drive the car. Its more like driving a regular lancer until you really put your foot into. I like the twitchiness of the stock turbo. I like instant spool simply by pressing the pedal down 1/4 inch.
I think a stroker and the green would be the best of both worlds. Better than stock spool, more lowend torque, and more airflow up top. It may not have a blazing top end but who cares.... shift earlier and enjoy the same power.