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nismokiller
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nismokiller Enthusiast

nismokiller

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Need abit of help choosing the right gear for my motor!

Its a RB30e r31 motor with roughly 140,000 kms on the clock

im after a turbo that would be appropriate for drifting , not after a lag monster, but nothing to small? possibly only want to run 14psi max im guessing for a standard motor with a new headgasket?

Also would i get away with drifting using a rb30 gearbox? or should i try and chase up a rb25 box or VL turbo box?

And would it be worth throwing a cam in it?

Sorry in advance if this isn't the correct forum for my questions, and thanks to anyone who has help on this topic!

cheers,

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nismokiller Enthusiast

nismokiller

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I have a 25 neodet motor coming my way next week >.> it only comes with a engine loom and computer, if i wire up a push button start system, with battery and indevidual fuel pump switch, should i be able to start the motor with just the wiring that goes with the engine??

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GTSBoy Grand Master

GTSBoy

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I have a 25 neodet motor coming my way next week >.> it only comes with a engine loom and computer, if i wire up a push button start system, with battery and indevidual fuel pump switch, should i be able to start the motor with just the wiring that goes with the engine??

Yes, but you will have some fault codes. TCS/ABS at the very least. If you do not have the (ECU, not dash) boost sensor plugged into the engine loom, then a code for that too.

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GTSBoy Grand Master

GTSBoy

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No. Not that simple. Boost sensor is easy. TCS system is a whole 'nother story. The TCS system has its own computer that reads the wheel speed sensors and actuates the TCS throttle butterfly (upstream of the engine's normal throttle). The TCS butterfly has a position sensor on it.

When you start the R34 engine up, the engine ECU looks to see if the TCS system drives the TCS butterfly closed then open (start up self check). If it does not see that, it raises a code. Also, if the TCS computer is not present, then the ECU will raise a fault code because of the comms failure. You can only have it all work if you have a functioning TCS computer, which will probably raise fault codes of it's own if you don't have all the wheel speed sensors etc.

You can use a Nistuned ECU with a Stagea image in it (no TCS in Stageas) but my recent experience with doing so is that the automatic transmission Stagea images that are available cause driveability problems with manual Neo cars.

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