Injector size question
10-27-2014, 12:29 PM
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Injector size question
Hey guys
Newby here from the UK I run a uk accord type r with the h22a7 motor I'm in the process on getting a T4 turbo fitted running P28 question I have I'm looking to achieve around 280 to 300 bhp is 650cc injectors a overkill or shall I go for 525cc? I have also been offered a set of used Id1000cc
Any advise is appreciated
Chris
Newby here from the UK I run a uk accord type r with the h22a7 motor I'm in the process on getting a T4 turbo fitted running P28 question I have I'm looking to achieve around 280 to 300 bhp is 650cc injectors a overkill or shall I go for 525cc? I have also been offered a set of used Id1000cc
Any advise is appreciated
Chris
10-27-2014, 05:59 PM
#3
Re: Injector size question
This is also the kind of question you should ask your tuner, to see what he's comfortable with. I'm assuming all three of those injector options are not made by the same company. Injector brand and tuning software are the two things you should always let your tuner pick.
10-27-2014, 06:54 PM
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Re: Injector size question
im attempting my first turbo build for my 90 crx si question is would I be okay running the stock injectors? my setup is a obd0, sohc zc nonvtech stock mpfi intake manifold stock everything so im not sure what the injector cc are. I will be running a t3/t4 a/r .50 at 8psi.... ps I do plan on getting it tuned to get it running good im only looking to make around 140-180hp range
10-27-2014, 07:42 PM
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Re: Injector size question
Hey guys
Yep the tuner is well known and the best within the UK I'm sure he be using crome. I'm sticking to stock internals so 280 is probably max running at 8psi so similar setup a corn.crx.. The injectors in mind are FIC 650cc or the 525cc but after speaking to FIC now sticking to 650cc. But I have been offered a used set of ID's 1000cc at a good price with adaptors and get these turned down to run the 280bhp but worried it may run lean
Yep the tuner is well known and the best within the UK I'm sure he be using crome. I'm sticking to stock internals so 280 is probably max running at 8psi so similar setup a corn.crx.. The injectors in mind are FIC 650cc or the 525cc but after speaking to FIC now sticking to 650cc. But I have been offered a used set of ID's 1000cc at a good price with adaptors and get these turned down to run the 280bhp but worried it may run lean
10-27-2014, 10:52 PM
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Re: Injector size question
im attempting my first turbo build for my 90 crx si question is would I be okay running the stock injectors? my setup is a obd0, sohc zc nonvtech stock mpfi intake manifold stock everything so im not sure what the injector cc are. I will be running a t3/t4 a/r .50 at 8psi.... ps I do plan on getting it tuned to get it running good im only looking to make around 140-180hp range
And for your power goal a t3/t4 hybrid anything is stupidly huge. You'll have nothing but lag and no power except for the last few thousand rpm.
Your definition sounds like an eBay turbo but I'm not even gonna start on that topic. That size turbo will do nothing but create surge at your power levels, it's simply way too damn big.
You could make that power on a stock sr20 t25 and have a much much more useful (and practical) powerband.
You need to do some serious research on turbo sizing vs power output.
10-28-2014, 12:24 AM
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Re: Injector size question
Ok thanks for the heads up the only reason I have the t3/t4 it kit i purchased from another user had this turbo and was advised it ran fine with 8psi
Any heads up on the injector sizes mainly the 1000cc
Any heads up on the injector sizes mainly the 1000cc
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10-28-2014, 12:36 AM
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Re: Injector size question
No they won't work.
And for your power goal a t3/t4 hybrid anything is stupidly huge. You'll have nothing but lag and no power except for the last few thousand rpm.
Your definition sounds like an eBay turbo but I'm not even gonna start on that topic. That size turbo will do nothing but create surge at your power levels, it's simply way too damn big.
You could make that power on a stock sr20 t25 and have a much much more useful (and practical) powerband.
You need to do some serious research on turbo sizing vs power output.
And for your power goal a t3/t4 hybrid anything is stupidly huge. You'll have nothing but lag and no power except for the last few thousand rpm.
Your definition sounds like an eBay turbo but I'm not even gonna start on that topic. That size turbo will do nothing but create surge at your power levels, it's simply way too damn big.
You could make that power on a stock sr20 t25 and have a much much more useful (and practical) powerband.
You need to do some serious research on turbo sizing vs power output.
10-28-2014, 07:38 AM
#9
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Re: Injector size question
Lag is from a combination of things - manifold design/size, turbo size, charge piping length, etc....
A T4 topmount + corresponding T4 anything turbo is going to mean weeks of lag for your 300hp goal. You would be much better off selling the manifold and starting off with something smaller (T3 miniram) and a smaller turbo (T3/T04e 50 or 57 trim). Otherwise plan to lag, lag, lag ..... hit boost for 1-2k rpms and shift, lag, lag, lag, .....
A T4 topmount + corresponding T4 anything turbo is going to mean weeks of lag for your 300hp goal. You would be much better off selling the manifold and starting off with something smaller (T3 miniram) and a smaller turbo (T3/T04e 50 or 57 trim). Otherwise plan to lag, lag, lag ..... hit boost for 1-2k rpms and shift, lag, lag, lag, .....
10-28-2014, 09:27 AM
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Re: Injector size question
Lag is from a combination of things - manifold design/size, turbo size, charge piping length, etc....
A T4 topmount + corresponding T4 anything turbo is going to mean weeks of lag for your 300hp goal. You would be much better off selling the manifold and starting off with something smaller (T3 miniram) and a smaller turbo (T3/T04e 50 or 57 trim). Otherwise plan to lag, lag, lag ..... hit boost for 1-2k rpms and shift, lag, lag, lag, .....
A T4 topmount + corresponding T4 anything turbo is going to mean weeks of lag for your 300hp goal. You would be much better off selling the manifold and starting off with something smaller (T3 miniram) and a smaller turbo (T3/T04e 50 or 57 trim). Otherwise plan to lag, lag, lag ..... hit boost for 1-2k rpms and shift, lag, lag, lag, .....
10-28-2014, 09:53 AM
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Re: Injector size question
But yes t4 anything on a Honda motor is laggy, especially at only 300hp.
Also your turbo isn't twin scroll, simply divided which isn't the same thing... So you won't get the response benefits and flat torque curve that a twin scroll setup offers.
You at most need a t3 turbine side turbo. Like a t3/t04e with a stage 3 turbine wheel.
If you want a broad powerband then something like a t25 flanged gt2860r, gt2860rs, or a gt2871r.
The 2871 would support about a maximum of 430whp while delivering a very broad powerband.
The t4 setup you're using will probably only make power from 5500-6000rpm and up at best. It will probably be laggier than that, especially if you're using a large turbine housing.
And in regards to "works fine at 8psi"... Pressure doesn't determine if a turbo works well... Airflow does.
Running too large of a turbo at low boost can result in large amounts of surge and make the car almost undriveable. Depending on the actual airflow of the motor you might not even be on the compressor map yet.
Bigger isn't better, a turbo needs to be properly sized to the application for it to work, you need to plot your motor on some compressor maps and you'll see what I'm talking about.
Also your turbo isn't twin scroll, simply divided which isn't the same thing... So you won't get the response benefits and flat torque curve that a twin scroll setup offers.
You at most need a t3 turbine side turbo. Like a t3/t04e with a stage 3 turbine wheel.
If you want a broad powerband then something like a t25 flanged gt2860r, gt2860rs, or a gt2871r.
The 2871 would support about a maximum of 430whp while delivering a very broad powerband.
The t4 setup you're using will probably only make power from 5500-6000rpm and up at best. It will probably be laggier than that, especially if you're using a large turbine housing.
And in regards to "works fine at 8psi"... Pressure doesn't determine if a turbo works well... Airflow does.
Running too large of a turbo at low boost can result in large amounts of surge and make the car almost undriveable. Depending on the actual airflow of the motor you might not even be on the compressor map yet.
Bigger isn't better, a turbo needs to be properly sized to the application for it to work, you need to plot your motor on some compressor maps and you'll see what I'm talking about.
10-28-2014, 11:16 AM
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Re: Injector size question
But yes t4 anything on a Honda motor is laggy, especially at only 300hp.
Also your turbo isn't twin scroll, simply divided which isn't the same thing... So you won't get the response benefits and flat torque curve that a twin scroll setup offers.
You at most need a t3 turbine side turbo. Like a t3/t04e with a stage 3 turbine wheel.
If you want a broad powerband then something like a t25 flanged gt2860r, gt2860rs, or a gt2871r.
The 2871 would support about a maximum of 430whp while delivering a very broad powerband.
The t4 setup you're using will probably only make power from 5500-6000rpm and up at best. It will probably be laggier than that, especially if you're using a large turbine housing.
And in regards to "works fine at 8psi"... Pressure doesn't determine if a turbo works well... Airflow does.
Running too large of a turbo at low boost can result in large amounts of surge and make the car almost undriveable. Depending on the actual airflow of the motor you might not even be on the compressor map yet.
Bigger isn't better, a turbo needs to be properly sized to the application for it to work, you need to plot your motor on some compressor maps and you'll see what I'm talking about.
Also your turbo isn't twin scroll, simply divided which isn't the same thing... So you won't get the response benefits and flat torque curve that a twin scroll setup offers.
You at most need a t3 turbine side turbo. Like a t3/t04e with a stage 3 turbine wheel.
If you want a broad powerband then something like a t25 flanged gt2860r, gt2860rs, or a gt2871r.
The 2871 would support about a maximum of 430whp while delivering a very broad powerband.
The t4 setup you're using will probably only make power from 5500-6000rpm and up at best. It will probably be laggier than that, especially if you're using a large turbine housing.
And in regards to "works fine at 8psi"... Pressure doesn't determine if a turbo works well... Airflow does.
Running too large of a turbo at low boost can result in large amounts of surge and make the car almost undriveable. Depending on the actual airflow of the motor you might not even be on the compressor map yet.
Bigger isn't better, a turbo needs to be properly sized to the application for it to work, you need to plot your motor on some compressor maps and you'll see what I'm talking about.
This the turbo I got with kit of someone on the forum I use
Looks like I need to get a T25
10-28-2014, 11:49 AM
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Re: Injector size question
Hey Chris,
Fuel Injector Clinic 525cc injectors should support roughly 275 whp on gasoline.
Fuel Injector Clinic 650cc injectors should support roughly 340 whp on gasoline.
You can play with other injector sizes, configuring fuel type, fuel pressure, and other variables using the injector flow calculator on our website here: Flow Calculator
If you have any other questions please feel free to ask and we'll be happy to help you out.
Fuel Injector Clinic 525cc injectors should support roughly 275 whp on gasoline.
Fuel Injector Clinic 650cc injectors should support roughly 340 whp on gasoline.
You can play with other injector sizes, configuring fuel type, fuel pressure, and other variables using the injector flow calculator on our website here: Flow Calculator
If you have any other questions please feel free to ask and we'll be happy to help you out.
10-28-2014, 07:20 PM
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Re: Injector size question
That is a Chinese eBay special turbo. I wouldn't even bother taking the time to bolt it up.
You need a small t3/t04e, a straight t3 60 trim, or if your budget allows a gt or gtx 2860 through 2871 turbo.
You need a small t3/t04e, a straight t3 60 trim, or if your budget allows a gt or gtx 2860 through 2871 turbo.
10-29-2014, 03:51 AM
#16
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Re: Injector size question
Or a stock rb25 turbo, which is basically a 'gt2566' with a T3 inlet flange. It will be prefect for your power goal and spool very quickly they can also be found pretty cheap, compared to $1k+ for a new Garrett.
10-29-2014, 09:51 AM
#18
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Re: Injector size question
The rb25 turbo is a step up from the sr20 turbo. It will support 300+whp, whereas the sr20 will do~50hp less. Both are great turbos for street cars and they can be found cheap.
10-29-2014, 10:34 AM
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Re: Injector size question
Found a RB25DET turbo so I will purchase this now. I want to use a external wastegate is it as simple as removing the internal one from the RB25DET and link up as normal
10-29-2014, 08:07 PM
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Re: Injector size question
No they won't work.
And for your power goal a t3/t4 hybrid anything is stupidly huge. You'll have nothing but lag and no power except for the last few thousand rpm.
Your definition sounds like an eBay turbo but I'm not even gonna start on that topic. That size turbo will do nothing but create surge at your power levels, it's simply way too damn big.
You could make that power on a stock sr20 t25 and have a much much more useful (and practical) powerband.
You need to do some serious research on turbo sizing vs power output.
And for your power goal a t3/t4 hybrid anything is stupidly huge. You'll have nothing but lag and no power except for the last few thousand rpm.
Your definition sounds like an eBay turbo but I'm not even gonna start on that topic. That size turbo will do nothing but create surge at your power levels, it's simply way too damn big.
You could make that power on a stock sr20 t25 and have a much much more useful (and practical) powerband.
You need to do some serious research on turbo sizing vs power output.
10-30-2014, 12:43 PM
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Re: Injector size question
description from seller
removed from a skyline gtr rb26. It has a t25/t28 style
It's just had a full rebuild with all new bushes and 360 upgrade bearing turbo spins perfectly. It has got a brand new up rated hardened steel shaft/turbine wheel as the standard is a brittle ceramic shaft prone to breakage.
removed from a skyline gtr rb26. It has a t25/t28 style
It's just had a full rebuild with all new bushes and 360 upgrade bearing turbo spins perfectly. It has got a brand new up rated hardened steel shaft/turbine wheel as the standard is a brittle ceramic shaft prone to breakage.
