01txr Member 861 Member For: 17y 10m 17d Gender: Male Location: QLD Posted 05/04/21 12:29 PM Share Posted 05/04/21 12:29 PM Ive scored a brand new Aeroflow 7075. 8005-4004 T4 with1.15 rear My concern is its best rpm range and lag. Car was previously stock engine with nizpro springs, high mount with to4z t4 1.06, 4" dump with 2" wastegate pipe through 50mm wastegate, hdi 600x300x75 cooler, 3.5" xforce exhaust, plazmaman top plenum, seimen daka 660cc injectors. T56 manual sedan. Would start building boost at 1100rpm in top gear. 12psi by 1500rpm. No lag issues. Was running it to 6300rpm New built engine, lots of porting with large ferrea valves. New pro series plazmaman intercooler. New complete plazmaman plenum intake. Possibly will go to stage 3 crow cams also. Car is street car, would like to do some weekend street circuit fun. Not wanting to rev it harder than 6500rpm due to factory crank. Is this turbo too big for my application, will it be laggy down low in the rpm range? Feedback appreciated. Link to comment Share on other sites More sharing options...
Tom Tucker Donating Members 669 Member For: 5y 5m 1d Posted 05/04/21 10:20 PM Share Posted 05/04/21 10:20 PM that's impressive response from the TO4Z. Are you getting your motor built in QLD? Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,005 Member For: 16y 7m 21d Gender: Male Location: Melbourne Posted 05/04/21 11:58 PM Share Posted 05/04/21 11:58 PM welcome back, @01txr from a ~5 year hiatus in posting your love of the sound and the spool of hte T04Z setup is well remembered haha Link to comment Share on other sites More sharing options...
01txr Member 861 Member For: 17y 10m 17d Gender: Male Location: QLD Posted 06/04/21 04:20 AM Author Share Posted 06/04/21 04:20 AM Thanks Keith. Gets disheartening being on here and not being able to finish the new build. Hoping I can get back into finishing it. Ive have thought numerous times of putting it in a shop to finish, but I can't bring myself to trust shops. Being in the industry in my younger years, brings me to lack of trust. Also, if something goes wrong I prefer its by my mistake not a shop where I have a sh*t fight to get it sorted. I build it, it breaks, I learn and fix the issue. I take it this website is not as popular now adays since no more Barras are being sold. So bs what these bureaucrats and big corporations do to us. 6 hours ago, Tom Tucker said: that's impressive response from the TO4Z. Are you getting your motor built in QLD? It did go well, until number 6 rod didn't want to play no more. Lol Ive been on a extreme slow build, too busy to get into it, too many toys and no room atm to try finish it. New engine. Extensive porting Large Ferrea Valves Crow springs Crow stage 3 cams (still have to purchase) Crow lifters Undecided on timing chain kit Ross Forged Pistons Argo Rods with ARP2000 bolts ARP main and head studs ACL bearings Atomic oil pump gears Billet oil pump backing plate. Atomic main girdle. Have not decided on new injectors as yet. Also have the plug and play Haltech ecu now, can't wait to play with it. Was tuning using sct with racer pro tuning software. So much more options with the Haltech. Not sure if I get to finish it soon though, as very time deprived and got to try sort room out in my garage. Just get a little motivated everytime I get a new piece. Link to comment Share on other sites More sharing options...
01txr Member 861 Member For: 17y 10m 17d Gender: Male Location: QLD Posted 06/04/21 04:58 AM Author Share Posted 06/04/21 04:58 AM Back when I was running the to4z, a friend had a bf f6, that ran gt45 with gt47 internals. Made 600rwhp at think was 22psi on pump fuel tune. 780rwhp on race fuel think was 28psi. Mucking around on the street from 60kph, I put over a car length on him and held it till x speed. His would not make boost under 3500rpm. Hence I'd get out front straight up. He was always complaining about how other cars would do the same and once he got going it was all over. This is what Im fearing with this 7075. Don't want to sacrifice the low end so much, if it will start making boost by 2000rpm at be on song before 3000rpm I could live with it, do not want to rev it past 6500rpm with factory crank. Wasn't expecting the 7075 to being so much bigger than the to4z until I got home with it and compared it. Was a great price so I jumped on it, before researching it throughly. I also need to sit manifold on head and sit turbo on to make sure it clears head and rocker cover. May need to sell my to4z setup and get new manifold and dump made. Just need to hear from others of how this turbo responds so I can decide to keep or resell it. The to4z will limit max hp, with the porting, big valves, pro series plazmaman intercooler and plazmaman plenum. Im certain it will be even more response allowing me to utilize a larger turbo. My plans back when I started the build was to go T51R, but seems theres been numerous improvements in turbos since and theres better options. Feel free to recomment options of turbo choice. Keep in mind its not a drag car. Its a 6sp manual. Its street and fun circuit use I'm after. With some drag runs time to time. Not wanting a sh*tbox LS beating me because of lag or no traction when boost arrives. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,005 Member For: 16y 7m 21d Gender: Male Location: Melbourne Posted 06/04/21 05:02 AM Share Posted 06/04/21 05:02 AM from all of that it sounds like you really really want to keep the to4z setup... Link to comment Share on other sites More sharing options...
Tom Tucker Donating Members 669 Member For: 5y 5m 1d Posted 06/04/21 05:53 AM Share Posted 06/04/21 05:53 AM I'm with you, response is where it's at. Nothing worst than some laggy turbo on the street. You have similar goals to me. I went G35-900, but you could probably buy 4 Aeroflows for the cost of that Link to comment Share on other sites More sharing options...
01txr Member 861 Member For: 17y 10m 17d Gender: Male Location: QLD Posted 07/04/21 04:35 AM Author Share Posted 07/04/21 04:35 AM 23 hours ago, k31th said: from all of that it sounds like you really really want to keep the to4z setup... Yeah like I was extremely happy with it. Was very responsive. Downside was I also struggled with traction first 3 gears. Running 265x30x19 Toyo Proxy 4's. Tune at 12psi was driveable through throttle control. On 17psi tune there was fine line between no boost and wheelspin. So thinking as I said with the headwork, bigger intercooler, plenum etc. That response will be even better which will make traction worst. Hence thinking to try keep the response no better than it was or a little later just so it gives car the chance to start moving before boost comes on. From what I've read on my Haltech ecu, boost control is well covered, so will be able to control traction. Feel something similar to a t51r might be my best option. Be good to hear feedback on this 7075 first. Can it work as I want or will it be too laggy? Whats a good option up from a to4z? Link to comment Share on other sites More sharing options...
Tom Tucker Donating Members 669 Member For: 5y 5m 1d Posted 07/04/21 06:31 AM Share Posted 07/04/21 06:31 AM Head work, intercooler and plenum will increase lag, believe it or not. They will improve peak power Link to comment Share on other sites More sharing options...
01txr Member 861 Member For: 17y 10m 17d Gender: Male Location: QLD Posted 07/04/21 07:42 AM Author Share Posted 07/04/21 07:42 AM Im in agreement that they will defiantly increase peak power. Smoother ports should promote quicker cylinder filling, though increased port volume will slow port speed, (more critical in N/A). Larger intercooler also slower air speed. Short straight runner plenum, not sure. Maybe I'm better off finishing build, run the to4z and see if Im happy. That G35-900 sounds good, but omg it is pricey. Maybe even next size up. Will keep researching. Thanks On 06/04/2021 at 3:53 PM, Tom Tucker said: I'm with you, response is where it's at. Nothing worst than some laggy turbo on the street. You have similar goals to me. I went G35-900, but you could probably buy 4 Aeroflows for the cost of that Searched the G35-900, says its for 2.0L to 3.5L engines. Great power rating. You would surely be controlling boost down low in first 3 gears on street rubber. What are you revving yours too and does it hold boost to your rev limit? Link to comment Share on other sites More sharing options...
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