20g-9 vs BB 50trim vs 3037 vs 3076
Wow, lots of Good info.
You guys are talking about Inj. Size varying quite a bit. Why is this? Does AEM Require more Fuel than lets say a UTEC Setup? Im getting a little lost on what INj. Size to go after. HELP..
Im planning on going with a 3076 setup. What would you recommend as far as inj goes?
You guys are talking about Inj. Size varying quite a bit. Why is this? Does AEM Require more Fuel than lets say a UTEC Setup? Im getting a little lost on what INj. Size to go after. HELP..
Im planning on going with a 3076 setup. What would you recommend as far as inj goes?
Originally Posted by shiv@vishnu
Are you running an AEM? If so, I suspect that is why you need larger injectors than those who are running stock injector drivers.
shiv
shiv
Originally Posted by shiv@vishnu
Once again, this is because of the injector driver's in your AEM not driving the injector as well as it could.
Regards,
shiv
Regards,
shiv
To check for a difference in voltage at the injectors, just back probe one while running a car on the dyno with a stock ECU and compare with the EMS. Then we'll know if that's an issue, which I don't think it is.
-Mike
Originally Posted by Spooldyou
Wow, lots of Good info.
You guys are talking about Inj. Size varying quite a bit. Why is this? Does AEM Require more Fuel than lets say a UTEC Setup? Im getting a little lost on what INj. Size to go after. HELP..
Im planning on going with a 3076 setup. What would you recommend as far as inj goes?
You guys are talking about Inj. Size varying quite a bit. Why is this? Does AEM Require more Fuel than lets say a UTEC Setup? Im getting a little lost on what INj. Size to go after. HELP..
Im planning on going with a 3076 setup. What would you recommend as far as inj goes?
Remember...the downside of running out of injector is engine damage/failure.
-Mike
Originally Posted by Inn-Tune
If you aren't going to run real high boost get 750's and if you're really going to push that turbo to the max get 850's or 900's so you have a nice bit of headroom. There is no downside to going slightly larger. All those injectors when properly tuned will idle just as well as stock injectors. They all cost about the same and the difference in efficiency while at idle and cruise is as negligible as the gains from cooler fuel at WOT due to increased dead time for the injectors to cool between pulses.
Remember...the downside of running out of injector is engine damage/failure.
-Mike
Remember...the downside of running out of injector is engine damage/failure.
-Mike
I thought the gt3040R was the same as the 3076R?! 
Back on topic...
The stock 16g is a great turbo, but if you want a bit more flow I'd either pick up a takeoff Evo IX 20g for relatively cheap, or if you want a bit more power, the 3076R is a great choice. As the gentleman from Full Race already explained the 50 trim still uses old technology despite the new optional BB CHRA's. It simply can't compete with GT series turbos in terms of efficiency. I agree that any dyno charts showing a 50 trim outperforming the 3076R would not be apples to apples comparisons.
The 3040R goes into another realm really and is too different in terms of boost response and flow to compare with the other ones.
-Mike
Originally Posted by Inn-Tune
Back on topic...
The stock 16g is a great turbo, but if you want a bit more flow I'd either pick up a takeoff Evo IX 20g for relatively cheap, or if you want a bit more power, the 3076R is a great choice. As the gentleman from Full Race already explained the 50 trim still uses old technology despite the new optional BB CHRA's. It simply can't compete with GT series turbos in terms of efficiency. I agree that any dyno charts showing a 50 trim outperforming the 3076R would not be apples to apples comparisons.
The 3040R goes into another realm really and is too different in terms of boost response and flow to compare with the other ones.
-Mike
Originally Posted by thatsMR2u
I thought the gt3040R was the same as the 3076R?!
No, its actually a hybrid of the gt30r and gt35r (gt30 turbine and gt40comp, gt40 comp is used in the 35r). if im wrong, someone please correct me.
Originally Posted by TwStDeVo
No, its actually a hybrid of the gt30r and gt35r (gt30 turbine and gt40comp, gt40 comp is used in the 35r). if im wrong, someone please correct me.
The most common GT3040 is the turbo you described (gt30 turbine, gt35R/gt40 61mm/82mm compressor). That turbo has a larger compressor wheel then that turbine wheel can drive, so this is by definition a "mis-match" turbo. people who have used this turbo, then switched to a gt35R, have said the 35R spools faster and makes more power.
Another GT3040 which i have yet to see (and would like very much to, as they are prevalent in some other countries) would definately not be a mismatch and would provide a very nice (broad) powerband and spool up well.
Originally Posted by Full-Race Geoff
I believe there are (2) GT3040 turbos
The most common GT3040 is the turbo you described (gt30 turbine, gt35R/gt40 61mm/82mm compressor). That turbo has a larger compressor wheel then that turbine wheel can drive, so this is by definition a "mis-match" turbo. people who have used this turbo, then switched to a gt35R, have said the 35R spools faster and makes more power.
Another GT3040 which i have yet to see (and would like very much to, as they are prevalent in some other countries) would definately not be a mismatch and would provide a very nice (broad) powerband and spool up well.
The most common GT3040 is the turbo you described (gt30 turbine, gt35R/gt40 61mm/82mm compressor). That turbo has a larger compressor wheel then that turbine wheel can drive, so this is by definition a "mis-match" turbo. people who have used this turbo, then switched to a gt35R, have said the 35R spools faster and makes more power.
Another GT3040 which i have yet to see (and would like very much to, as they are prevalent in some other countries) would definately not be a mismatch and would provide a very nice (broad) powerband and spool up well.
very interesting! now im confused on which turbo to purchase. i was told that the gt3040 would spool 2-300rpm later than a 3076r(which would still spool 500rpm faster than a 35r) and make atleast 25whp more. i dont want the 3076r because on pump and alky 30psi i would probably make 450whp, my goal is 475+whp. it would seem like the ix-20g would be a better choice than the 3076r as it spools faster, makes almost the same power, and make alot more tq.
also, is there any way you can provide more info on the other gt3040? what makes it different and do you have any specs? sounds very interesting.
Originally Posted by TwStDeVo
very interesting! now im confused on which turbo to purchase. i was told that the gt3040 would spool 2-300rpm later than a 3076r(which would still spool 500rpm faster than a 35r) and make atleast 25whp more. i dont want the 3076r because on pump and alky 30psi i would probably make 450whp, my goal is 475+whp. it would seem like the ix-20g would be a better choice than the 3076r as it spools faster, makes almost the same power, and make alot more tq.
also, is there any way you can provide more info on the other gt3040? what makes it different and do you have any specs? sounds very interesting.
also, is there any way you can provide more info on the other gt3040? what makes it different and do you have any specs? sounds very interesting.
Looking back at my BR500bb kit I am pretty sure it was a GT3071r with a .48 back half on it, I was trapping around 122 mph and running mid 11.50 with ease on it. I have never dynoed the car, nor do I ever care to. If I use a mph/weight calculator it comes out to about 456 whp. If that is the case I am betting you can get your 475 out of a .82 76r and don't need to mess with the 3040. This was done on a BR stg 4 car and a DynoFlash.
Last edited by 4ringturncoat; Feb 2, 2006 at 10:43 AM.
Originally Posted by TwStDeVo
i dont want the 3076r because on pump and alky 30psi i would probably make 450whp, my goal is 475+whp...also, is there any way you can provide more info on the other gt3040? what makes it different and do you have any specs? sounds very interesting.
The other 3040 is a 52 trim, everything else is pretty similar.
Last edited by Geoff Raicer; Feb 2, 2006 at 12:35 PM.
Originally Posted by 4ringturncoat
Looking back at my BR500bb kit I am pretty sure it was a GT3071r with a .48 back half on it.
Originally Posted by Full-Race Geoff
We are consistently seeing deep 550+ whp levels at 30 psi on 1.8L hondas. I dont understand why your larger displacement motor would make less power?
<put's on flame suit>To clarify for those who don't get the joke... I was highly disappointed coming from the Honda camp the first time I tore down an Evo head...
Last edited by Zeus; Feb 2, 2006 at 12:40 PM.
Originally Posted by Full-Race Geoff
a .63 or .82 turbine housing would be a very good idea
I could but I already sold the kit. I am looking at your 3076r. Now that I am pretty sure I had a 71r I think I would be very happy with 76r/.82 on the new stroker with Piper race cams. I really think with some work I could have gotten the 71r into the 11.20's so I am guessing ten's on the 76r are a pretty good reality. Great spool on a 10 second car would be wicked good fun on the street
Originally Posted by 4ringturncoat
Looking back at my BR500bb kit I am pretty sure it was a GT3071r with a .48 back half on it, I was trapping around 122 mph and running mid 11.50 with ease on it. I have never dynoed the car, nor do I ever care to. If I use a mph/weight calculator it comes out to about 456 whp. If that is the case I am betting you can get your 475 out of a .82 76r and don't need to mess with the 3040. This was done on a BR stg 4 car and a DynoFlash.
i always thought you had the 3076r, which is where i get the 450whp on pump and alky. i read another post where a guy had the 3076r with .63 a/r and he said he dynoed 456whp at 28psi. if you really do have the 3071, then the 3076r seems nice. i just have not seen anyone post numbers that are 450+whp other than a couple of vishnu cars. i have the same mods as you and will have a custom dynoflash as well.
on a side note, would the 3076r be the better choice compared to the ix-20g? looking for street/drag set up. mostly race supercharged v8s, vettes, vipers from standstill or rolling races.
Last edited by TwStDeVo; Feb 2, 2006 at 01:17 PM.
Originally Posted by Full-Race Geoff
i really dont understand why you think 30 psi on that turbo would net you 475? We are consistently seeing deep 550+ whp levels at 30 psi on 1.8L hondas. I dont understand why your larger displacement motor would make less power?
The other 3040 is a 52 trim, everything else is pretty similar.
The other 3040 is a 52 trim, everything else is pretty similar.
are these numbers with the standard gt3076r from garret or is it modified? also, what kind of difference in whp and wtq would i see with the .82 a/r compared to the .63?