Jump to content
SAU Community

Recommended Posts

The bigger the turbo the less it muffles the exhaust, that's why you can get away with a straight through setup on a stock rb20 and still have it bearably loud. With a GT30 the exhaust wheel is that much bigger and doesn't do a good job at muffling so you need a better exhaust setup. Keep this is mind when choosing exhausts people, turbo size influences the noise level drastically.

hey just a quick question,

i have just recently bought a brand new n1 oil pump will i also need to buy the jun crank collar too? and second thing i bought my oil pump from a Japanese tuner shop (st hi tec) and also bought 1 tomie oil restrictor but when buying this soichi cautioned several times not to use the oil restrictor as it is made for a rb26 and most likely to run the head dry and i have been told this by a couple of other guys too but some say to use it. Can anyone help?

my combo is

rb30 block with r32 NON vct head

wiseco forged pistons

shot peined rods

and just a standard recond rb25 head.

Quick question - how long does it take your cars to reach operating temp (we'll go by water temp)

From dead-cold to 80 degrees, it takes my donk about 5-6minutes... is this on par with other RB30s? Overall the engine does run quite hot, especially on the turbo side :P

Sounds about right. I've only recently whacked a new thermostat and water pump in there, before then I'm pretty sure the thermostat was getting stuck open as it would take AGES (read: 15-20mins) to get up to 80deg and would rise past there easily as if the thermostat wasn't opening fully.

Edited by bubba

Yeah the only thing is i only just need to get it rebuilt so it would be cheap, i would add cams but i dont have that much money to spend so thats about it.

I saw it made 344kw on a RB25 not much done to it at 7500 RPM but didnt boost till about 4.5.

Yeah I'm using one... 3" Hi-Flow Metalcat; I wasn't really using it for any performance reasons... more for legality, and also to get rid of the repulsive fuel smells coming from my exhaust which was also coating my rear bumper yellow. Great success in achieving these two goals.

Is it true that the Mazda 323 1.7d cambelt is the same width but 152 teeth long so it can be used?

Yep. half the price too :laugh:

Myself and 3 other guys i know well are running them with no problems.

Hey guys quick question..

Haven't got a block yet, but first thing I do will be to strip it down and go get it checked over before I rebuild the thing myself

I'm gonna get some pricing from some engine rebuilders around me, to help with the planning

What are the things do you guys think I should be asking for?

I hear you don't really need to rebore the cylinders

So just get pricing on machining the deck, acid dipping, repositioning of the tensioner, crack testing? Anything else I should get pricing on?

Plan for worst, hope for the best really.

Can someone confirm for me if its ok to use the RB25DET idler pully and tensioner with an RB26 head? Apparently there are two different tensioners, one for the RB20/25 and another for the 26...

Can't say I've seen any difference. Just use 2 x 25 tensioners as you can have too little slack with the high tensioner/low idler location.

There is no need for a difference as they do exactly the same job. Don't buy from Nissan but go to rolling bearings or somesuch. Should be about $120 for the pair.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Have a look at that (shitty) pic I posted. You can see AN -4 braided line coming to a -4 to 1/8 BSPT adapter, into a 1/8 BSPT T piece. The Haltech pressure sender is screwed into the long arm of the sender and factory sender (pre your pic) into the T side. You can also see the cable tie holding the whole contraption in place. Is it better than mounting the sender direct to your engine fitting......yes because it removes that vibration as the engine revs out 50 times every lap and that factory sender is pretty big. Is it necessary for you......well I've got no idea, I just don't like something important failing twice so over-engineer it to the moon!
    • Yup. You can get creative and make a sort of "bracket" with cable ties. Put 2 around the sender with a third passing underneath them strapped down against the sender. Then that third one is able to be passed through some hole at right angles to the orientation of the sender. Or some variation on the theme. Yes.... ummm, with caveats? I mean, the sender is BSP and you would likely have AN stuff on the hose, so yes, there would be the adapter you mention. But the block end will either be 1/8 NPT if that thread is still OK in there, or you can drill and tap it out to 1/4 BSP or NPT and use appropriate adapter there. As it stands, your mention of 1/8 BSPT male seems... wrong for the 1/8 NPT female it has to go into. The hose will be better, because even with the bush, the mass of the sender will be "hanging" off a hard threaded connection and will add some stress/strain to that. It might fail in the future. The hose eliminates almost all such risk - but adds in several more threaded connections to leak from! It really should be tapered, but it looks very long in that photo with no taper visible. If you have it in hand you should be able to see if it tapered or not. There technically is no possibility of a mechanical seal with a parallel male in a parallel female, so it is hard to believe that it is parallel male, but weirder things have happened. Maybe it's meant to seat on some surface when screwed in on the original installation? Anyway, at that thread size, parallel in parallel, with tape and goop, will seal just fine.
    • How do you propose I cable tie this: To something securely? Is it really just a case of finding a couple of holes and ziptying it there so it never goes flying or starts dangling around, more or less? Then run a 1/8 BSP Female to [hose adapter of choice?/AN?] and then the opposing fitting at the bush-into-oil-block end? being the hose-into-realistically likely a 1/8 BSPT male) Is this going to provide any real benefit over using a stainless/steel 1/4 to 1/8 BSPT reducing bush? I am making the assumption the OEM sender is BSPT not BSPP/BSP
    • I fashioned a ramp out of a couple of pieces of 140x35 lumber, to get the bumper up slightly, and then one of these is what I use
    • I wouldn't worry about dissimilar metal corrosion, should you just buy/make a steel replacement. There will be thread tape and sealant compound between the metals. The few little spots where they touch each other will be deep inside the joint, unable to get wet. And the alloy block is much much larger than a small steel fitting, so there is plenty of "sacrificial" capacity there. Any bush you put in there will be dissimilar anyway. Either steel or brass. Maybe stainless. All of them are different to the other parts in the chain. But what I said above still applies.
×
×
  • Create New...