gt35r here i come too!
07-06-08, 11:28 PM
#26
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Uhmm. Anyone else think his secondaries are far too large?
Personally, I'm only going w/ the stock primaries and 1300 secondaries.. Also Water Injection which I see you are going to add also.
And that's with the T4 divided 1.06 and a mild port.
The Water Injection kit will take some load off your injectors too.
Something to consider.
,
Last edited by Wild7; 07-06-08 at 11:39 PM.
07-07-08, 02:00 AM
#28
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Yes they are. I have heard on several occasions that people have had 1300's fail. 1300's are a stock 850 bored out. They are not made to flow that kind of volume initially. Some people have had them stuck open or stuck shut. Hell i'll go so far as to say that i'm not a fan of rc injectors period. As for saying they are too big, well perhaps you arent familiar with tuning? The thing about injector sizing is, it all depends on how much boost you want to run. If you go bigger than 1300's there are other components that are required. I only wanted one project. Not a bunch of little ones. So if the time comes that i want to exceed 15psi, i will have the fuel system to do it. Then the only thing i'll have to add is an fjo water injection kit.
Looks awesome, I would love to do what you're doing right now. Best of luck to you, not like you need it 
07-07-08, 10:36 PM
#30
07-07-08, 10:59 PM
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Yes they are. I have heard on several occasions that people have had 1300's fail. 1300's are a stock 850 bored out. They are not made to flow that kind of volume initially. Some people have had them stuck open or stuck shut. Hell i'll go so far as to say that i'm not a fan of rc injectors period. As for saying they are too big, well perhaps you arent familiar with tuning? The thing about injector sizing is, it all depends on how much boost you want to run. If you go bigger than 1300's there are other components that are required. I only wanted one project. Not a bunch of little ones. So if the time comes that i want to exceed 15psi, i will have the fuel system to do it. Then the only thing i'll have to add is an fjo water injection kit.
Mine is going to be a primarily street driven car personally.. Not sure about yours.
I have confidence in the 1300's, especially with Water Injection.
07-07-08, 11:06 PM
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1680 Secondaries and 640 primaries: 1680-640 = 1040
vs
1300 Secondaries and 550 primaries: 1300-550 = 750
I'm no tuner but that's what I was told to take into consideration and compare.
You won't overwork those 1300's with Water Injection.
.
vs
1300 Secondaries and 550 primaries: 1300-550 = 750
I'm no tuner but that's what I was told to take into consideration and compare.
You won't overwork those 1300's with Water Injection.
.
07-07-08, 11:17 PM
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Am I getting bad info lol??
My installers explained how he's driven cars with large injectors like those and the car ran like crap. When he spoke with the people who built the car they said it was because of the port and large injectors.. and well, it was what it was; wasn't going to change or get any better.
.
07-09-08, 09:27 AM
#37
Will work for horsepower
It's what was explained to me like I said.. Harder to tune the transition apparently the larger the gap difference is..
Am I getting bad info lol??
My installers explained how he's driven cars with large injectors like those and the car ran like crap. When he spoke with the people who built the car they said it was because of the port and large injectors.. and well, it was what it was; wasn't going to change or get any better.
.
Am I getting bad info lol??
My installers explained how he's driven cars with large injectors like those and the car ran like crap. When he spoke with the people who built the car they said it was because of the port and large injectors.. and well, it was what it was; wasn't going to change or get any better.
.
So yes your getting bad info!
07-10-08, 02:54 PM
#38
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Oh man wild7 you really dont get it do you. There are tons of things to take into account when talking about how streetable an injector set up will be. Seimens injectors are known to have one of the best spray patterns for injectors currently on the market. Guess what has a pretty large effect on idle? You got it. Spray pattern. So take that into concideration. The closest size to the stock 550's that seimens makes is the 640's. Not a huge difference. You wont idle like crap with 1600's because they are not being used at idle. So tune the fuel maps correctly and those 640's should idle just fine. Fuel pressure also has something to do with it. As does how your engine is ported. I'm not making any mistakes with how i'm choosing my parts. I'm a technician and have tuned efi systems before. I have a standalone ae86 with a toyota 20v in it that i drive every day for the last two years. You can run water/alcohol injection. Thats fine. Its a great idea. I dont want to. I already am going to have to add 2 stroke oil on a regular basis. I dont want to have to add washer fluid, gas, oil and alcohol. Thats just too friggin much for me. That and i dont think i'm going to be running over 15 psi. 1600's have been done tons of times by tons of people including howard coleman, whom i have the utomost respect and admiration for. If he can tune a smooth transition with them it is definitely possible. Back up and stop clogging my build thread with nonsense. No disrespect.
--Hank
--Hank
07-10-08, 03:14 PM
#39
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one thing i know from experience , the combo 550cc(stock) and 1600cc although a bit on the edge , it can support up to 20 psi
i have done this in the past , and idle was still great
to be safer i would bump it to 850 and 1600
my thinking .....you can never have too much fuel
i have done this in the past , and idle was still great
to be safer i would bump it to 850 and 1600
my thinking .....you can never have too much fuel
07-10-08, 03:30 PM
#40
What you guys dont relize is that FJO driver he put in is going to make those injectors work better than the stock injectors even at those sizes. I dont see him having a problem with getting it to idle and drive smoothly....Putting resistors compared to putting the FJO driver is like running a Apex-i A/F controller piggyback compared to a PFC... TOTALLY different.
Chris
Chris
07-10-08, 08:04 PM
#41
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one thing i know from experience , the combo 550cc(stock) and 1600cc although a bit on the edge , it can support up to 20 psi
i have done this in the past , and idle was still great
to be safer i would bump it to 850 and 1600
my thinking .....you can never have too much fuel
i have done this in the past , and idle was still great
to be safer i would bump it to 850 and 1600
my thinking .....you can never have too much fuel
What you guys dont relize is that FJO driver he put in is going to make those injectors work better than the stock injectors even at those sizes. I dont see him having a problem with getting it to idle and drive smoothly....Putting resistors compared to putting the FJO driver is like running a Apex-i A/F controller piggyback compared to a PFC... TOTALLY different.
Chris
Chris
--Hank
07-11-08, 12:24 AM
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People know more then others about certain things and I never claimed to know much about this topic; just what I heard and was trying to be helpful or as you would call it "clogging your build thread".
I feel like saying more but I'll bite my tongue.
07-13-08, 10:13 AM
#43
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Sorry to be an *** about it. I'm an *******, its true. A bad guy. I have a low tolerance threshold for ignorance and stupidity. And i hold it back for no one, including you. Please feel free to say my name in vain, and other such horrible things. I likely deserve it. I will die for your sins.
07-17-08, 12:32 AM
#44
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Ok, so after some nonsense, heres some more pictures of progress. I have finished making my downpipe and a battery tray for a honda optima.
Some pictures of the battery tray.
And some of the downpipe
Some pictures of the battery tray.
And some of the downpipe
07-17-08, 11:31 AM
#47
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I already got a t3 manifold. I kind of like the idea of a t3 much better. That or one of those new tial v-band ones. Anyway the flange on the manifold is a divided t3 which should help throttle response and only effect hp on the top end by some small amount like 3 or 5. The whole exhaust isnt going to be 3.5 either, just about 1 or 2 feet of the downpipe immediately off of the turbo. This helps turbo response. The reason is, as the air from the turbo is being expelled into the downpipe it is spinning and very turbulent. The bigger the pipe directly off the turbo, the more the air will "straighten out" which will help your turbo respond better. I'm not looking for big max power here. I'm looking for response. That is why i went with a t3 with a .82 exhaust side. 1.06 with a divided t4? How much spool time do you loose in comparison. I guess we'll see.
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