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cameron

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Posts posted by cameron

    400rwkws From Gt3540 .82

    in Forced Induction Performance

    Posted

    Sydneykid

    are you replying to the main question or are you just talking about the jap performance r33?

    Cameron do you know what CR he was running?

    There are alot of conflicting reports..

    The engine had Arias piston and a 1.8mm tomei headgasket - Im unsure of the CR but if you know what comp the arias piston you could proberly work it out, Im guess somewere between 7.5:1 - 8.2:1 very low for a RB25, but this allowed us to run a consistant 32psi with out stressing the engine too much.

    400rwkws From Gt3540 .82

    in Forced Induction Performance

    Posted

    You goto be spot on their SK,

    Our R33 RB25 ran the GT3540 0.82A/R at 32psi of boost, hks 256cams with 8.8 lift no porting of the head, ran out of fuel to make extra power up top needed another 044. :sleep:

    On 98octane it came out with 370rwkws and a 11.0 @ 129mph on slicks.

    So to answer the theads question...

    I think on race fuel and a bit of head porting you would see 400rwkws.

    But you would still have to run up around the 30psi area.

    So I would say it is safer to go the bigger exhaust housing.

    Power Fc? Aaarrggghhh Hehe

    in Forced Induction Performance

    Posted

    use a multi-meter, find which side of ecu is low on voltage, run new power to the ecu from fuse box in engine bay - its on ign switch.

    Im sure you can find the rb25 pinout on here some were.

    altho I have a question,

    Does the H/C display anything with just the ignition on, and does the lights on dash work?

    Curious About Light Knocks

    in Forced Induction Performance

    Posted

    I get a maximum of about 8 and the odd knock up to about 12.

    If im driving normally it sits about 2

    I know its nothing to worry about but i am curious to what the knock is being caused by

    General engine noise, it will be pretty hard to stop and its 100% normal at cruise to get around 10 - 12.

    Inless you pull 10deg timing which will make it sluggish.

    Q45 Differences

    in Forced Induction Performance

    Posted

    Wolf3D... great step up :lol:

    mokompri: What are you trying to say? If 2 differnet engines make eg: 300rwkws and if the AFM does not max on one it should not be max on the other becaues they have the same peak power.

    You'r claim eg:

    Car: Make 300rwkws at 7000rpm - None Maxed AFM

    Car: Make 300rwkws at 7000rpm - None Maxed AFM

    How do you know its not maxed, regardless of the peak power like I said AFM's generally max at peak torque point or close to it in the engine, whether its 5000rpm or 7k a MAX voltage of 5.1 is the limit.

    Too many variables,

    Were talking turbo's not superchargers!

    Let me know how you go adrian! :)

    Q45 Differences

    in Forced Induction Performance

    Posted

    they may flow different amounts throughout the rev range, but if peak power is the same and if it doesnt max out on one, it wont on the other either.

    In my expierence's with the Q45 (one that works) I've tuned 2 different RB25's with 2 different turbo's same Q45 AFM... Sorry didnt look at the number on it.

    Engine 1: rebuilt engine, GT3540 turbo - running 30psi making 500rwhp maxing AFM 5.1vlts @ 5000rpm - engine was reving to 8k - peak power was made at 7500rpm

    Engine 2: stock engine, HKS 3037s turbo - running 25psi making 430rwhp maxing AFM 5.1vlts @ 5500rpm - reving to 7k peak power made at 7k

    We did not check these AFM with a multi-meter to see for sure that they were maxing out, these readings were from the apexi PFC.

    The cars drove fine etc, had no troubles with tuning the AFR's

    I know boost pressure does not = air flow through the meter.

    The z32 is a much better afm for tuning the only thing you could do is to put it into a bigger 90mm pipe.

    Size Does Matter

    in Forced Induction Performance

    Posted · Edited by cameron

    The wiggle up top is because of the 4wd.

    Wow thats quiet an increase....

    Your right about the cams but you have to get the correctly match turbo for the engine's intensions.

    I've only ever seen thoes sorts of gains with n2o in place.

    Failed Turbo Question

    in Forced Induction Performance

    Posted

    eg:

    Blocked oil feed to turbo,

    Turbo with no oil on bearings = to much heat/friction = The same thing that happens to every bearing that requires oil or a form of lubericant = noisy and broken

    If the bearing is completly fruguled and bits are gone = bad shaft play and wheel says hello to housing.

    Sounds like you need a new turbo :P

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