Apexi IHI Rx6 Turbo
 

Is there anyone out there that currently has an Apexi turbo or has good info. about it. How are the Stainless Ball Bearings vs. ceramic (life, etc) Horsepower, has anyone blown there engine using this turbo?

THANKS!!

My friend down in GA blew his engine during a track event using the new Apexi kit. Only because his wastegate hose melted through....boost spiked to about 28 psi. As far as the other longevity issues..i have no clue. BUT i am ordering my RX6 turbo kit in the next few weeks.

Shannon

how is the RX6 TURBO compare to T-78 TURBO?

The RX6 is much smaller than the T-78. The "regular" RX6 will support "maybe" 400rwhp on an internally stock engine. There are, however, custom IHI RX6 turbos avalible, including the "B" model which supports a bit more hp. Spool up is about the same as the stock twins too...

The design itself is about as bullet proof as a turbo can get. Apexi doesn't even offer a BOV with the kit because they say it doesn't need one. Don't confuse it with the failure-prone Turbonetics stuff. If you visit the japan site, they have pics of the various configurations. I've been told that it'll take 6-8months to get a custom IHI however. If you have a "Japan" connection, perhaps faster. I believe their site is www.apexi.co.jp
I plan on upgrading to this turbo eventually after I max out the twins :-)

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Michel
95 RX7 PEP, CWC Intercooler, N-Tech Intake, CWC Intake on the way, N-tech BMK in rear, HKS downpipe, Pettit Resonated Midpipe, SR Motorsports tuned Power FC, SR Motorsports 1300cc/min secondaries, GReddy Power Extreme, AST eliminated, Zip tie mod, Royal Purple Racing 41, lots o' gauges, Cusco strut tower bar, HKS Twin Power, Magnecore wires, stock clutch, brakes and suspension, Advan VS-5 rims, Kumho 712's, 2708lbs. without driver

I intend of getting this Apex RX6 IHI Turbo, do you know if its suitable for a custom turbo extended port engine for street and drag racing ! This engine is ported as above and has 8 extra dowels and 2 Bosch 1700cc secondry injectors.

What is a custom extended turbo port. I've heard of peripheral ports, bridge ports, street ports...how does an extended turbo port come into play?

I'm not sure what it is but i'm getting this engine from Australia and was quoted that it runs mid nines on a 2000lbs car and high ten's on a 2800lbs car !

Who is supplying you the engine?

How much can I ask....

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http://www.rotorgasm.com/sigs/ricecard.jpg

I believe the APEXi is a 1.15 a/r exhaust and I put down 445 rwhp uncorrected at 15 psi on a low compression engine and 417 corrected. Although it does not have as much potential as the T78. I believe that it is capable of around 500 rwhp at 20 psi. I really does boost faster than the T78. I hit max boost at 4000-4500 rpms. I compaired my 15 psi dyno graph to the RP RX-7 plot at 23-25 psi and I made more power till around 5500 rpms, due to the quick boost response.

I believe that the APEXi is a very good choice for those that want to have a more streetable single turbo system running 15 psi or less. Admittedly, now that my RX-7 has been relegated to primarily drag racing, I wish I had bought the T78.

Cheuk

I bought the remanufactured motor from a local Mazda dealership for $1936 plus core. I am sending the motor to KD Rotary this week to get it ported, with some reliability mod's. Has anyone had a chance or heard any stories about the upgraded 2mm apex seals KD offers. I plan on running no more than 15 psi on a street driven car but reliability is important.

Thanks!

the rx6 is a perfect street setup, maybe not 4 the most power, but the waste gate is open at 3000rpm@14psi and itll break the tires loose at 60 in third, whitch is good enough for me

mike

Hey Kevin, how much is KD charging you to have your new motor ported?

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93 Silver Touring
Bonez SS DP
Bonez SS MP
Pettit ECU
K&N Intake
Manual bleed valves
Silicone vacuum hoses
Autometer Boost gauge
Autometer Air/fuel gauge
and 13psi of PURE FUN!

KD is charging me
$600 for street porting
$400 for 2mm hurley seals
$100 better coolant seals
$15 ecentric shaft modification
$200 to reassemble
Plus any applicable shipping charges.
Dave@KDR has been what everyone else says - Great!

Dyson Rotaries is supplying the engine, have you heard of this company. This engine has a turbo extended port with extra dowels, 1700cc secondary injectors and bosch motorsport fuel pump.

does anyone kno the exact specs on the rx6 turbo and is it a t3t4 turbo or a straight t4?

Does anybody know the true a/r ratio? Is it 1.0 or 1.5 and do you know what the compressor housing is? And Finally any graphs for power and torque on this turbo. I went to apexi's web site and they dont have any of the questions im asking. And does anybody know if i bought the RX6 kit for the third gen rx7 if i could bolt on the apexi AX75 Turbo. Thanks.

Yeah, a T78 can safely make 500rwhp on pump gas. :rlaugh:

1.5-1.75 A/R turbine housing on a T78? I've never seen anything above 1.36, even on big 20B setups. And aren't GReddy turbine housings measured in CM?

Am I missing something?

Missing something? Well, that post is from early 2001, and he never stated 500 on pump gas ;)

So im guessing nobody knows the specs on the RX6 IHI Turbo?

Didn't even notice dates. Lots of threads are being resurrected lately, oh well.

I assumed since he said the RX6 can't hit 380 "safely" and that the T78 can hit 500 "safely" he meant pump gas. Just using context clues.

Funny that the same turbos are still being used these days (some at least).

Yeah....

RX6 is a big series from IHI incl. turbos from small to slightly bigger in many trim sizes etc.

From Apexi info you have the option from
AX53B60 to AX53B70
with 57 trim
inducer sizes from 46 to 53
exducer sizes from 60 to 70
with T25 flange or t3 in some cases.

to RX6B Series
with comp Trim from 48 to 57
inducer sizes from 54 to 61
exducer sizes from 78 to 82
exhaust A/R from 13mm to 27mm

up to AX75F82 or F92
with comp Trim from 50 to 61
inducer sizes from 61 to 64
exducer sizes from 82 (AX7582F) to 92 (for the 92F)
exhaust A/R 25mm only.

So you can see, the RX6 turbo is something like the T04S turbo in size. You will see something like 400hp from this turbo but if your engine is in good condition, probably more.

this is what we got from customers setup:

http://www.rotary-imports.de/space/fd_rx6.jpg

REgards
Iwan

i have a rx6 on for four yrs car is a 95 no problems i love it very fast spool up car is over 400rear wheel hp near green bay

Thanks for the info.

I know this is probably off topic but anyways i drive a 95 talon right now thinking of the driveability and i havnt even put 1000 miles on it and i broke the underdrive pulley bolt. So now i have to buy a new underdrive pulley and bolt for it. I was planning on buying this guys 3rd gen in town but how reliable is it going to be? The two FC's i had were very reliable but they also had no power. My friends think i should get an evo cause of the reliability and its .020 seconds faster. So the question is, would a basic bolt on FD with intensions of a RX6 turbo and mildly street ported be just as reliable as a bolt on evo 8? I would appreciate the comments and the help.