23 replies to this topic

[mr-squiggle]

hey guys, i have started my rb26/30 project... and i have been reading everywhere about harmonic problems in the standard crankshaft, just wondering if anyone knew where i would be able to get an aftermarket rb30 crank?

cheers, chris

[hotlap]

you've got to be kidding?

hahahahahahaha if not then you should stop dreaming..

This topic should be deleted as it is stupid.

My advice would be to forget the 30det S15 delusion and go to autobarn and check out there new range of blitz pods, should have one for the lancer.

[mr-squiggle]

oh tru?? man i might have to go down to autobarn and see what i can get huh? then again i dont want to replace my k&n filter...

anyone want to give me some real advise?

[-Johnno-]

just go ask extreme man, if not the internet would be another good idea. if u have all ready tried doin that....i dunno. if u need a hand puttin sh it together id be more then willing to help *if u go thru with it*. tho my mehanical knowledge isnt the best, it would be interesting how it goes...

[vst20]

why would u do that to a s15 u could make just as much power with the sr20 for half the price if i was u i would have a good thing about it

[SiKnEsS]

vst20 said:

why would u do that to a s15 u could make just as much power with the sr20 for half the price if i was u i would have a good thing about it

maybe its less common 2 c a rb30dett in a s15 than a sr20det, two turbo's, 2 more cylinders and 1000cc more, and more torque, why would anyone want that? lol

[mr-squiggle]

hey thanks for the input, i was talking to a few people today and they said that the rb30 crank is nitroted (spelling) and i just have to get the crank magnafluxed and it will be strong as hell apprently... and because i am running an auto gearbox the crank will be harmonically balanced

[mr-squiggle]

-Johnno- i will pm you when we start putting her all togeather. just got the block in brisbane for machine work by a mate of my fathers

[sinister]

An SR20 will never make the power an RB26/30 will make, but the costs to get it are pretty substantial also. My advice would be if you want to do the engine swap, just buy an RB26 and drop it in, the costs of building the RB26/30 are far from cheap.

It's not a common conversion due to the costs, even just getting an RB26 in there is a fairly hefty costs. Let us know how you go though, be good to see it happen.

[2fast4u]

the conversion does seem a bit out there but if you have got the money im sure you will be happy with the result

[gtp_vlbt1]

rb26/30 arent that expensive

a mate of mine john dimauro made 373rwkw out of a SR22 (2.2 litre stroker)

T88-34d turbo, a lot of cash went into that engine, if you buy High performance imports you'll see it in there,

this car can pull mean skids @ 180km/h

as for the cost, an rb30 bottom end costs nothing, (slab of beer in most cases) na and turbo are the same, make sure you get a series II block as they already have the holes drilled and tapped for oil feed, return and coolant feed

as far as i am aware there hasnt been harmonic problems with a Rb30e, (unless you have a shithouse harmonic balancer)

but good luck building it, should be rad

[sinister]

A T88 is a ridiculous turbo for an SR, it would have insane amounts of turbo lag and just be totally undriveable. There is no point to having a turbo that large on a motor that small besides being a dyno queen.

To give you a rough idea, Simons car which has been talked about quite a bit lately is running a 25/30 motor and made 500hp on low boost (for his turbo anyways) with a rough tune. Only have to look at the car to tell he has spent a crap load of money on it but I am sure you could spend a lot less.

[Robbo]

gtp_vlbt1 > RB30 blocks arent cheap bud.. try around $1200!! hahaha
Mr-squigle I almost had respect for you.. but youve blown it .. an AUTO s15 with 26/30 ... :wallb: :vom:



Seeing as how I've got nothing positive to add here, i'm going to forget about posting in this thread again.. Don't wanna waste my time or yours> :sorry:

[gtp_vlbt1]

rb30 blocks for 1200bux?? where are you buying these from??

the engines whole are worth 400 bux tops, my mates wrecking yard is dumping these in the bin everyweek to make room for more stock

the last rb30 i got was for 2 cartons of beer, and this was a complete engine with 200 or something thousand k's

for 1200 bux you can buy a smashed vl just for the engine

or a rusted out r31 skyline

meh if you want rb30 blocks e.t.c cairns car wreckers has about 30 instock in the shed alone

give them a call talk to andrew

[mr-squiggle]

i already got an rb30... i want to run auto so i dont have to waste time changing gears and waiting for half a sec to wait for boost to come on again

[mr-squiggle]

whats so good about manual? you might like manual because you drop it back a gear and drifting around corners... but i dont... everyone has different tastes

and i dont want to be changed a clutch and spending $600 to do that every few years

[UDLOOZ]

^^^ Auto's cost alot more than a clutch once they start to slip dude.... keep that in mind!!

[Robbo]

gtp_vlbt1 > I wasn't serious mate.. I dont think RB30 blocks are worth $1200 either..


As for manuals.... more controllable, more efficient, more predictable, cheaper (in general). And in my opinion more enjoyable to drive.

I can appreciate that automatics can help launch harder due to transbrakes and stalls and can shift whilst remaining on boost and hence be faster over a quarter mile but i'd rather have a car thats half a second slower that has better fuel efficiency and that I enjoy driving.

On a side note I realize you can choose any car you want due to your scratchy winnings and import contacts, but if your going to get a car that doesnt corner well due to its automatic transmission then why go to the extra expense of choosing an s15? A car thats arguably one of the best handling cars around?

[gtp_vlbt1]

for your auto box matem when the let go, be prepared to outlay 3k

when my bunky pos s13 ca18det boat anchor let go

it came to $3,400 to rebuild the box

but they cut me a deal since i gave them the cash upfront and the car was back to me within 3 days

if your gunna run an auto, use the current jatco 4 speed (commonly vl gearbox), these gearboxes are teh same through out the nissan range

even the 300zx TT uses a jatco

i think a surpa uses a jatco or a R154 auto (im at work so ill do some more research)

these are up to the task but you WILL need

at least : Kevlar clutches and a kevlar band, new shift solenoids

these are the minimum, since i got the box rebuilt to tougher than OEM specs, no more slip no matter what you do

if your serious about the auto, make it into a Full manual valve body, so you basically can manually shift the gears but wont need a clutch

depending what your using the car for (drag e.t.c) then u'll wanna beefed up jacto with full manual valve body mod, KEAS does these boxes for about 3 - 5k

want more info, just hit up rajab or bresciani racing these guys run those boxes all day everday and hit something like sub 8's now

[mr-squiggle]

thanks for the info gtp_vlbt1 ill keep that all in mind