injectors 7afte - 6G Celicas Forums

playr158

#31

dan your getting SL9-550's
where did you order from?
and did you talk to RC yourself?
what was your crank hp goal for them?

with about a 250-280 crank hp goal
i think i came out with like 525-550cc injectors
via RC's equation

dans_st

#32

I spoke to a few honda/acura people I know and found out that the IT-R was a saturated(high imped.) injector , then I called RC and talked to one of thier techs and he said the SL9-550 was hat fit my car as well as the IT-R with no mods to the injectors, I ended up ordering them through racingdimension.com for 305.69 shipped for the set.

NIK-as for my plans for my engine it is currently a 7AFTE I have a set of ford probe turbo injectors right now and I know that I need more fuel therefore I bought the 550's knowing that as soon as I can put it together I am going to go the 7AGTE route- right now I am working on sourcing all of my parts. as far as what mods I am planning I want to do the a 7A forged bottom-end with 84mm 4agze low compression pistons, for the top end I plan on doing a 4AG big port head with full P&P on everything up top, and possibly going with larger valves anh HKS cams. as for turbo I'm not sure the largest while not having too much lag with alchohol injection.

If anyone is missing NASCAR and it's not on Speed Channel, take a fistful of Skittles, throw them in the toilet and hit the flush handle. Instant NASCAR!!!

nik

#33

-dans_st+Jul 18, 2005 - 8:37 AM

QUOTE(dans_st @ Jul 18, 2005 - 8:37 AM)

I spoke to a few honda/acura people I know and found out that the IT-R was a saturated(high imped.) injector , then I called RC and talked to one of thier techs and he said the SL9-550 was hat fit my car as well as the IT-R with no mods to the injectors, I ended up ordering them through racingdimension.com for 305.69 shipped for the set.

NIK-as for my plans for my engine it is currently a 7AFTE I have a set of ford probe turbo injectors right now and I know that I need more fuel therefore I bought the 550's knowing that as soon as I can put it together I am going to go the 7AGTE route- right now I am working on sourcing all of my parts. as far as what mods I am planning I want to do the a 7A forged bottom-end with 84mm 4agze low compression pistons, for the top end I plan on doing a 4AG big port head with full P&P on everything up top, and possibly going with larger valves anh HKS cams. as for turbo I'm not sure the largest while not having too much lag with alchohol injection.
[right][snapback]313721[/snapback][/right]

wow 84mm that 3mm over stock i would have gone 83mm max but its your car when you get it done tells us how it turns out

yea your 3sgte is cool but ill stick to my 7agte

playr158

#34

"84mm 4agze low compression pistons"

ummmm 83mm is like the barely safe point.................

dans_st

#35

my machine shop told me I could do the 84mm ,but i would definetely need a new radiator or it would overheat. I haven't personally seen it done have many6 of you guys seen problems with a 7A block with this size pistons before? I don't want to seem as though I am a know it all if I have that is just what my research on this has led me to believe that I can do this - but any and all help is appreciated.
I rebuilt this engine last year and that is the most I have been in the bottom end I know NIK and Player158 have been into the internals and I am all ears to you guys' advice

If anyone is missing NASCAR and it's not on Speed Channel, take a fistful of Skittles, throw them in the toilet and hit the flush handle. Instant NASCAR!!!

playr158

#36

i haven't personally done internals yet i'm still researching the most beneficial setup......and i don't think any has ever done 84mm in a 7afe you would be the first person to try that....

so if you try and it works thats really awesome we would know much more about the strength of the block...
if not then we know how much that it can take and how much it can't

nik

#37

-dans_st+Jul 19, 2005 - 4:00 PM

QUOTE(dans_st @ Jul 19, 2005 - 4:00 PM)

my machine shop told me I could do the 84mm ,but i would definetely need a new radiator or it would overheat. I haven't personally seen it done have many6 of you guys seen problems with a 7A block with this size pistons before? I don't want to seem as though I am a know it all if I have that is just what my research on this has led me to believe that I can do this - but any and all help is appreciated.
I rebuilt this engine last year and that is the most I have been in the bottom end I know NIK and Player158 have been into the internals and I am all ears to you guys' advice
[right][snapback]314344[/snapback][/right]

Player158 i dont think has touched his bottom end or even started building his motor maybe gathering parts but thats it

As for me i tore my bottom end apart bored the block new custom pauter rods and 4agze 8.0:1 pistons and had it all balanced i have a bunch of new pic on my camra but havent had a sec to download them yet because i'm in the middle of moving.

yea your 3sgte is cool but ill stick to my 7agte

nik

#38

you could probable bore it to 84 mm and running it but theres no telling if 1000 down the road you have problems with it plus if you boost your putting that much more stress on the block or it could be fine no one here knows the limit to the block at least that i know of. the highest hp reported on a 7a bottom end is 300 by ray hall 7agte 20v

I on the other hand i will be pushing for atleast 350 whp or more but i did minium boring i have been told by my shop that its better to have more there (metal) on the block for stress etc preposess i believe them they have a talon awd drag car that pushes 832 whp will just have to find out

whats your power goal again?

yea your 3sgte is cool but ill stick to my 7agte

dans_st

#39

I don 't neccesarily have a power goal, I just plan on using the best parts I can get, with hopefully the best equipment (block/head) i can put together then just put it on the rollers and tune it and try to get the most I can without spending radical amopunts of cash. my only real goal right now is to get into the 13's on the quarter, then if I can do that and there is room for improvement I will try to do better and go faster. I am also trying to build a RB powered 240sx that I will take to the track but as of right now my celica is my car I drive daily and cruise on the weekends and I just want MORE power from it.

As for the 84mm pistons I am going to do some more research o9n how big I can go and keep reliabiltiy- thanks for the advice if not I would probably have jumped roght into alot of problems down the road- so I'll do some more research and see what is possible and best for my needs

If anyone is missing NASCAR and it's not on Speed Channel, take a fistful of Skittles, throw them in the toilet and hit the flush handle. Instant NASCAR!!!

FallenHero

#40

-nik+Jul 19, 2005 - 4:45 PM

QUOTE(nik @ Jul 19, 2005 - 4:45 PM)

you could probable bore it to 84 mm and running it but theres no telling if 1000 down the road you have problems with it plus if you boost your putting that much more stress on the block or it could be fine no one here knows the limit to the block at least that i know of. the highest hp reported on a 7a bottom end is 300 by ray hall 7agte 20v

I on the other hand i will be pushing for atleast 350 whp or more but i did minium boring i have been told by my shop that its better to have more there (metal) on the block for stress etc preposess i believe them they have a talon awd drag car that pushes 832 whp will just have to find out

whats your power goal again?
[right][snapback]314358[/snapback][/right]

Which is why I was thinking the other day... Arent 4age cranks stronger than 7a? I know the 7rib block is probably twice the strength... and rods can be had cheaper. Would a built 4a not be safer than a built 7a?

Overall, I am very interested to see how Nik's engine turns out.

Kwanza26

#41

Strength of the crank is not and should not be considered a major issue unless you plan on pushing 300+ whp. I'd say the cranks are plenty tough. It's always the stuff around the crank that fails first (bears, rods, pistons, etc).

Also... 84mm is not gonna be OK. Based on rebuild specs alone, they don't reccomend anything over 82.25mm... 83mm is pushing it... 84... I think you'll be overheating, possibly even stress fracturing the cylinder walls especially if you plan on boost. There isn't a whole lot of meat between the cylinder walls and coolant jackets... These closed deck blocks just aren't too keen on being overbored... since they're already "overbored/stroked" versions of much smaller motors (original A series blocks only were 76mm bore)

"It's ok to be naked girl... I'm an artist!"1995 AT200 Celica ST:stocked out daily driver...1984 AE86 Corolla GT-SR5:silvertop 20V 4AGE project car jacked up with goodies...1991 SW2x MR2 n/a:bare bones hardtop model soon to be...

Kwanza26

#42

-FallenHero+Jul 20, 2005 - 10:59 PM

QUOTE(FallenHero @ Jul 20, 2005 - 10:59 PM)

Which is why I was thinking the other day... Arent 4age cranks stronger than 7a? I know the 7rib block is probably twice the strength... and rods can be had cheaper. Would a built 4a not be safer than a built 7a?

Overall, I am very interested to see how Nik's engine turns out.
[right][snapback]314802[/snapback][/right]

The 4A can handle stress because it's an oversquared design (smaller stroke than bore). The crank and rods take less stress, but a result of that is a poorer torque curve. To compensate, the 7A crank has larger journals (48mm rod/crank journals). Tis also a reason why you don't see many undersquared or even squared V blocks...

I too am happy for nik. Work more... talk less. That's how things get done. Much kudos to nik for doing more and talking less... ;]

"It's ok to be naked girl... I'm an artist!"1995 AT200 Celica ST:stocked out daily driver...1984 AE86 Corolla GT-SR5:silvertop 20V 4AGE project car jacked up with goodies...1991 SW2x MR2 n/a:bare bones hardtop model soon to be...

van95st

#43

I was wondering about those 550cc injectors. If you run to big of an injector could you run into a problem with fuel atomization, if you have to "turn down" the fuel output with a management system? Or would it just open for a shorter duration when filling the cylinder?

FallenHero

#44

big injectors do generally have trouble putting out such a small amount of fuel. Or so i read and hear.

nik

#45

-Kwanza26+Jul 20, 2005 - 6:49 PM

QUOTE(Kwanza26 @ Jul 20, 2005 - 6:49 PM)

-FallenHero+Jul 20, 2005 - 10:59 PM

QUOTE(FallenHero @ Jul 20, 2005 - 10:59 PM)

Which is why I was thinking the other day... Arent 4age cranks stronger than 7a? I know the 7rib block is probably twice the strength... and rods can be had cheaper. Would a built 4a not be safer than a built 7a?

Overall, I am very interested to see how Nik's engine turns out.
[right][snapback]314802[/snapback][/right]

The 4A can handle stress because it's an oversquared design (smaller stroke than bore). The crank and rods take less stress, but a result of that is a poorer torque curve. To compensate, the 7A crank has larger journals (48mm rod/crank journals). Tis also a reason why you don't see many undersquared or even squared V blocks...

I too am happy for nik. Work more... talk less. That's how things get done. Much kudos to nik for doing more and talking less... ;]
[right][snapback]314862[/snapback][/right]

>

> nice new pics are up inte 7agte diary getting close to installing it but i'm going to HIN so it has to wait for a few weeks

yea your 3sgte is cool but ill stick to my 7agte

normality78

#46

ok, back to injectors

How about using 4EFTE injector? its 295cc high impedance injector. But according to some 4EFTE owners, the injector maxed out on 160whp. (read on pg1, 290cc can support up to 200whp)

Im targetting 180whp but i do not want to use 440 as im only using emanage to control. I do know too big injector do have problem in idling or providing low amount of fuel on closed loop

presure2

#47

>

QUOTE(normality78 @ Jan 2, 2007 - 2:25 AM) [snapback]514538[/snapback]

>
ok, back to injectors

How about using 4EFTE injector? its 295cc high impedance injector. But according to some 4EFTE owners, the injector maxed out on 160whp. (read on pg1, 290cc can support up to 200whp)

Im targetting 180whp but i do not want to use 440 as im only using emanage to control. I do know too big injector do have problem in idling or providing low amount of fuel on closed loop

actually, 290s will not support 200whp...the supra 315CC injectors are only good for ~190-195..
for a 180whp target i would look for somthing in the range of 360cc

Former Team 5SFTE pro member ;)13.6@108MPH, 5SFTE Powered

normality78

#48

yeah, im using 360cc now which is frm GZE. but god damn it. the guy who done my turbokit doesnt tell me its low impedance until when i go for emanage tuning, found out why issit on close loop i was able to control my fuel at all

doGGy

#49

On my old 7AFTE i used Ford Probe Turbo 360cc injectors. pushed 219hp at the crank and injectors where about 70% maxed out (on emanage).

Ex celica owner - just a guy from other side of the pond...Full custom Projects from restoration to performance builds<<<<<< DCw / JDMart >>>>>>>

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