This is a gt25 4747 specs
I get that airflow up than 6.5 krpms
Logged by ecmlink
Airflowperev on spot , ve is right not 115 or that kind of things also wbfactor and afr is on spot to so not inflated numbers
Compresor housings and turbine were machined to allow this thing fit .
Is a good...
Well past about a year but i still on this journey
On less words
I did some upgrades t25 was shot after i didnt got lucky tp get one ,put a gt25 chra on housings so similar turbo stills on car
Didnt made a pass on methanol yet but some on gasoline to test and tune
No dialed yet my 60' and i...
Well with my turbo i was able to run 8.1 at 1/8 at moment with 1.81 sixties so can improve a little cutting them a little
Setup is gt2860 on machined dsm t25 comp housing plus .45 auto t25 housing too
I have a gt2560 on a dsm housing but its machined to fit , dont do a good pulls but i got 32.5lbs min at 48xx revs i think i will max of 35 as most maybe a little more but not tu much
finally finished
Relay fuse panel it is now
5 relays1.fuel pump
2.fan
3.egr output
4.fps output
5.lightsstarted Car on 20 meth 80 gas mix to see how all is working , as espected some leaks here and there etc ,now fixed , also wg solenoid terminal was hitting upper ic piping and blowing ecu...
Well yesterday after work i decided to work a little on car , in this car i deleted and tucked a lot of wires to clean up and loss some weight , aside engine harness and its own relay it only have a little wiring for basic things wich are , fuel pumps, fans ,lights , and ecmlink controled...
Well now we need to talk about mods i have
Engine is a commun h beam rods plus arias 8.8 comp pistons , fp2 cams (one of the best for autos and mid power with a good lift @50 ) fidanza cam gears , bc springs , titanium retainers , kiggly hla, and all 16 valves on +1 size , all of this in a...
So having boost control done
And all other of things , i decided to make a kind of cold air intake wich will be used only to get the most cooler air can get on test (daily will use an fp intake coupled to a 4 to 2.5 " wich its filter as supposed to be) , remember that this kind of setups , that...
After that "little" fab to make things work with current stuff was time to set wg pressure so started with a 15-20 psi spring wich at 20 psi is totally crack open , now plumbed is straight from turbo to bottom port of wg for awhile but think will remain as is , or maybe will set to get some...
Also oil drai was need to modified a little , but for my lucky with my hx40 setup only a new hose lenght was needed
For the feeding line just remain my extreme psi 4an line from ofh housing just matted /solder a fitting of 4an to oem hardline and was enought to work
The unhold boost issue is know on this turbo so
I decided to not move a lot of my current stuff , i have a t3 manifold with external wastegate wich is better for control , so i decided to keep that , so i ported turbi e inlet and outlet and o2 housong as well and added a t3 to dsm flange...
Well its for the purpose of play with t25 , t28,14b and 16gs on order to make funny times and get knolwdge of how to improve things to get a little extra , on maxed setups . I know turbo will struggle to live when i push it
Well having that data now i can get a better idea of what i can get from my car at strip
Wich is around
From 13.7 on gasoline to 12.8 on alky
All of that data is with 60s about 1.9s
And traps 100+ mphSo seem first goal is very doable now , so need to start
Well now we need to know some data to get a good idea (bench racing) of what i will run on certain scenarios.
Said this i know im.limited to spin engine high , its useless so need to use a low power , low rpm torque
Strategy .
From 3000 to 6.5 _7krpms at most
So getting with 24 lbs min at...
So now i need to work with what i have and what i can get here where i live (im from mexico)
In my specific area there is a lack of fuel options there are only 5 ways
1. Av gas
2. Methanol
3. Make my own ethanol/gas fuel
4. Race gas home brew , adding toluene , xylene , and alky to pump gas
5...
Well with that data
Now we need to make a plan and see possible scenarios for our goals.
First goal is go into 13 sec at 1/4 on this baby so
I did a research of people and setup , who did something similar or better , to get a good ideas and i puts , so , after some research i found , people...
so we can get that this turbo have a 24lbs/min airflow rate.
Then i need to do some calculations to plot at map with my engine displacement in this case 2.0 (122cid)
So now with that info i can see that at 1.2 pressure ratio (5+- psi ) i can get 3 or 4 lbs/min of airflow quick wich is nothing...
First thing i consider to make easier things is a good plan for whatever goal needed , so we know thia turbos are very inneficient uptop , they are out of steam very quick, but i decided to understand all nature of this and see what can i do and what not
So first thing is to look at comp maps...
well
After sometime building my car , i had an hx40 6764 turbo on it , it moved around 70ish lbs/min at 39.4 psi @8krpms , sure it ran good at that pressure and rpms , but for my bad lucky , we are on this covid shit and there isnt to much things to.do with that setup for the lack of time and...