fd3s single turbo
10-13-13, 12:12 PM
#1
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Thread Starter
fd3s single turbo
Hi people
I'm Joel from Portugal and I bought a rx7 fd3s single turbo, the turbo is a t4 turbo a/r.63 exhaust(i think it's little turbo for this engine), injection setup is 850cc+1680cc and FPR aeromotive, pump fuel 340l/h aeromotive, big front mount intercooler, hks ignition power, apexi power fc.
The cars running very good at low/mid rpm, but when i want running more fast with boost is slow, not running fast.
What's the problema you suspected? Turbo it's not good to this engine? Apexi Power fc tune not good?
Sorry for my english, i hope you understand
I'm Joel from Portugal and I bought a rx7 fd3s single turbo, the turbo is a t4 turbo a/r.63 exhaust(i think it's little turbo for this engine), injection setup is 850cc+1680cc and FPR aeromotive, pump fuel 340l/h aeromotive, big front mount intercooler, hks ignition power, apexi power fc.
The cars running very good at low/mid rpm, but when i want running more fast with boost is slow, not running fast.
What's the problema you suspected? Turbo it's not good to this engine? Apexi Power fc tune not good?
Sorry for my english, i hope you understand
10-13-13, 06:22 PM
#2
welcome to the board. 
if i'm understanding what you're saying correctly, then your problem is probably your turbine. the 0.63 is too small and killing your top end. for all i know the WHOLE turbocharger may be wrong for your engine. however, you never mentioned the compressor side, so i can't comment on that.
if i'm understanding what you're saying correctly, then your problem is probably your turbine. the 0.63 is too small and killing your top end. for all i know the WHOLE turbocharger may be wrong for your engine. however, you never mentioned the compressor side, so i can't comment on that.
10-14-13, 03:17 PM
#3
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Thread Starter
Sorry, 0.68AR, At this moment the turbo is temporarily, the Compressor wheel is .70A/R, Inducer: 91mm, Exducer 69.20mm, Turbine wheel: .68A/R, Inducer: 74.00mm, Exducer: 64.10mm
I have other turbo upgrade to install, it's a ball bearing turbonetics mid-frame 88mm but i hope the problema is the small turbo
I have other turbo upgrade to install, it's a ball bearing turbonetics mid-frame 88mm but i hope the problema is the small turbo
10-14-13, 04:12 PM
#4
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Thread Starter
I have the next turbo to install, compressor is a/r.95 88mm inducer, exhaust is 78mm turbine and a/r is 1.15mm
I have a stock port engine and i know it's a very large turbo and i suspected have very laaaggg, what's rpm i will go have full boost? 5500/6000rpm?
I have a stock port engine and i know it's a very large turbo and i suspected have very laaaggg, what's rpm i will go have full boost? 5500/6000rpm?
10-17-13, 02:07 PM
#6
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Thread Starter
Yes, it's bigger. My plans is streetracing and dragracing. I hope have a good results with this turbo . My goal is 500hp, is possible with setup injection 850+1680cc injectors? My engine have stock porting
Any rx7 fd in this fórum with similar turbo?
. My goal is 500hp, is possible with setup injection 850+1680cc injectors? My engine have stock portingAny rx7 fd in this fórum with similar turbo?
10-17-13, 02:44 PM
#7
if you use the stickies to help you boost your post count, then you will be able to check out the Single Turbo forum. you should be able to get information on many cars that have similar, if not the same, setup as you plan to run.
just be sure to get your posts the right way.
just be sure to get your posts the right way.
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10-17-13, 03:05 PM
#8
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Id go bridgeport, or a 6 port with aggressive street porting to help with that power goal! Reason why I suggest a 6 port is because of this thread right here. Gives good info on 6 ports: http://www.ausrotary.com/viewtopic.p...45e2ed&start=0
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10-17-13, 03:15 PM
#9
Id go bridgeport, or a 6 port with aggressive street porting to help with that power goal! Reason why I suggest a 6 port is because of this thread right here. Gives good info on 6 ports: AusRotary.com • View topic - 6 PORT TURBO is it possible?
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Sent from my LG-E980 using IB AutoGroup
10-17-13, 03:22 PM
#11
Your turbine is too small, minimum I would run is a .96
You can get to 500 hp with stock ports and your fuel setup, but not with that turbine housing, that housing is going to create to much back pressure and very high EGT.
But not around 16 psi, more likely 18-20 psi
I would suggest you a Borg Warner S366 with a .91 housing if all you looking for is 500hp
You can get to 500 hp with stock ports and your fuel setup, but not with that turbine housing, that housing is going to create to much back pressure and very high EGT.
But not around 16 psi, more likely 18-20 psi
I would suggest you a Borg Warner S366 with a .91 housing if all you looking for is 500hp
Last edited by BLACK MAMBA; 10-17-13 at 03:28 PM.
10-17-13, 03:34 PM
#13
that said, i am a little leery of you using the word "easy" in the same sentence as 500 HP Rx-7. continue your research.
10-17-13, 04:05 PM
#14
Junior Member
Thread Starter
Thanks BLACK MAMBA for your information, really i think my turbonetics is more bigger than Borg Warner S366 or am I mistaken
the turbonetics mid-frame compressor housing is a/r 0.95 and exhaust housing is a/r 1.15
What's you think about spool? 5500/6000rpm full boost? Or earlier?
the turbonetics mid-frame compressor housing is a/r 0.95 and exhaust housing is a/r 1.15
What's you think about spool? 5500/6000rpm full boost? Or earlier?
10-30-13, 12:12 AM
#21
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3rd Generation Fuel Calculator
at 85% max injector duty your fuel system is good for 650 hp at the flywheel. That is plenty of fuel for 500 whp and gives you a nice safety cushion.
at 85% max injector duty your fuel system is good for 650 hp at the flywheel. That is plenty of fuel for 500 whp and gives you a nice safety cushion.
08-13-14, 08:05 AM
#22
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Thread Starter
08-13-14, 08:55 AM
#24
Junior Member
Thread Starter
The engine start and runs good at low and mid range revs, after turbo pulls the old problem continue, it's very very very slow at highs revs.
Spark plugs check, fuel filter check, vacum silicone hoses check....
Any ideas about this problem? I don't have tune to this turbo but I think isn't why don't is fast in high revs
Spark plugs check, fuel filter check, vacum silicone hoses check....
Any ideas about this problem? I don't have tune to this turbo but I think isn't why don't is fast in high revs
