JonnoHR31

31 rb30s have all the oil and water feeds and returns tapped with bungs in them, the standard vlt lines bolt straight up

fuel economy wise the extra torque doesnt help at all, it makes more torque because its a bigger motor and draws in more air at low revs than a 25, more air means more fuel on the same tune. all else being equal the 30 will use a bit more fuel but not enough to put you off the conversion. if it bothers you that much buy a corrolla for daily duties and enjoy 6-7L/100km no matter how much you thrash it

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1.5mm bits are pretty cheap at bunnings

2mm thick short nails tapped in with a punch and loctited in, then drill a 1.5mm hole next to them, they're long enough though that if they do come loose they'll hit the head before coming out, simply resulting in a tiny bit extra oil flow.

yer more boost for the same/tiny bit more power up top but less everywhere else

na he wouldnt, andy (hyperdrive owner/tuner) is real conservative on timing, especially around peak torque. on cars with mods like this one he always tunes down to 11.5:1 at peak torque then back up to 12:1 after that OP: i have a proper garrett internal gate housing and dump pipe to suit for this turbo if your interested?

the damage varies. my old 25 copped 100s and 100s of knock readings well over 100 (some over 200) and never had any problems whatsoever, and yes it was genuine knock. pulled the head off and the pistons have slight detonation damage but nothing severe. on the other hand my 25/30 with a slightly bigger turbo setup (better manifold and bigger a/r housing) pinged hard once and 2 big ends and 1 main bearing ate the crank. better to be on the safe side and get it checked, in the meantime keep it off full load.

decomp plate? do you still dress like this?

why go 6 boost then use a horrible tweakit internal housing? i'd say that'd be your biggest problem, also being a hyperdrive tune it'd be on the conservative side. boost control could do with some attention aswell

enzed and gasket silicone are your friend with that one haha. i have a bogan way of blocking the 2mm feeds and a 1.5mm drill bit if you need any help on saturday....

you removed a boost leak, it'll now be running richer under vacuum and leaner under load, along with the extra load from a working clutch it'll be out of tune. take it back for a touch up and take it easy until you do so

im not on as much crack as the other 2.....

with either pump the standard rb30 2mm feeds will be too big. im doing this again atm and am going for 2x1.5mm feeds with a 25 pump and internal vct

never use octane booster oter than as a temporary fix to a bad batch of fuel as it ruins sensors very quickly. 18-20 psi is usually considered the safe limit for standard bottom end stuff, including head gasket. although sometimes you can get away with more, its all in the tune.

brand new genuine nissan boxes are only $3300 from just jap. otherwise 2nd hand is the best option

yer theres a legit one for a fuel card but the free fuel for a year is a seperate scam

almost on this exact page too.....

biggest problem with that is the .82 IW housing will become a big restriction before the compressor reaches it limits. apart from that though it should be a good comparison, especially for spool

to be different yo

yer i highly doubt they'd be big enough for straight e85

i know you can get them new but cant remember where from, apart from nissan which will probably cost a fortune.

if its the one in top radiator hose (solid section that bolts to the motor) then its the coolant temp sender for the ecu and will cause some problems if its farked. not sure where you can get a new one but could try a second hand one, they're pretty reliable

theres 2, both under the inlet manifold bolted to the block.

even if money is no object nistune would generally be a better option for a street car. its not a piggyback, yes it retains the standard ecu but modifies it so its fully programmable, the benefits of this are it looks 100% stock and you retain all the factory cold start and idle features which the power fc isnt as good at.