Rb30det/tt Gtr Conversion Thread

[Beer Baron]

hardcore!!!

[Duncan]

very impressive solution shane. Are they equivalent pressure on the bearings as the standard girdle? what price?

[shanef]

very impressive solution shane. Are they equivalent pressure on the bearings as the standard girdle? what price?

thanks duncan, it's taken alot of hours and money to make it

im not sure what we'll torque the studs to at this point, thats something i've gota talk to mick about. would u reckon giving more clamping pressure on the bearings a good or bad idea? or would u say try and get near to std specs as possible.

it uses rb26 headstuds as the mainstuds aswell (couldnt find an M11 ARP the right length)

Price is $2000 including all nuts/bolts & a 3mm MS template to tap/recess the block

[superjet760]

Hey boys has any one lowered the rb30/26 so the bonnet closes in a r32 gtr

meaning weather you spaced the xmember or modified the engine mounts

thanx in advance

[superjet760]

...nice work! ~very~ nice....

hey shane what would you charge for a adapter like that?

[shanef]

hey shane what would you charge for a adapter like that?

for the girdle? with it fitted into a block thats been machined to suit, youd be looking around the 3k mark (including main studs)

i've got my machinist (different one to who machined the girdle in the pics above) quoting up on it so wont know definate prices til i hear back from him

also i would prefer to sell the whole block/crank/billet girdle as a whole machined to suit, rather than the girdle by itself, as there is ALOT of intrikit (sp) machining and measuring to be done to get it to fit properly

P.S im now getting the adapters done on the cnc out of alloy, so thats why i ahvnt gotten back to you about them yet, next week i will know pricing om them

[VB-]

dunno if it has been mentioned but what about using a 4wd RB30 block? any benifit?

Edited March 14, 2008 by VB-

[Duncan]

which 4wd rb30 block? not sure how the patrol transfer case was handled, to be honest I assumed it did not have the front drive running through the sump (which is really the problem with 4wd vs rwd)

[VB-]

yeah i honestly know very little about em but saw a GTR that used a '4wd block' (dunno what else they came in besides the patrol, nothing else im pretty sure)

[Duncan]

rb30 only ever came in vl commonwhore (rwd), r31 (rwd), patrol (4wd but different I'm 99$ sure) and some gas powered forklifts in jp.

rd28 was also 4wd like the rb30 patrol.

but in all cases I am pretty sure the 4wd sump wiith driveshaft and diff does not bolt on.

[Adriano]

Patrols have a live front axle, definately not in the sump

[shanef]

I've finally got my billet girdle finished!

It has the adapter encorporated in it. This also means my 4wd adapter plates are good to go aswell

just thought i'd post an update:

the engine with this girlde had a turbo failure at the mid week track day and the motor has been pulled down.

the mains were looked at and there is not 1 sign of cap walk!

[nizmonut]

Hey boys has any one lowered the rb30/26 so the bonnet closes in a r32 gtr

meaning weather you spaced the xmember or modified the engine mounts

thanx in advance

hehe, grab the engine mounts from a LD28 powered laurelor R31 skyline station wagon, because of the deck hieght on the block the engine mounts are shorter,

the Rb30 was a australian only model in the r30, r 31 skylines and the last of nissan's 3l stocks were sold to GMH to power the 1987 holden commodore as this was a cheaper option then trying to engineer a new motor to come in under australia's exhaust emmisions laws as the 202 would never pass.

the patrol runs a live front axle this block could be used aswell as that from a vl or early skyline

3l gxe nissan station wagon for example.

the only major difference between the blocks of that era are the deck hieght and stroke,

i used the rb30 block and crankshaft from a vl, to replace the *$&%ed 26 block from my gtr

had the block honed and faces machined, the crank machined and balanced, oversized bearings, new rods and pistons.

everything pretty much was a straight swap, the sump, pick up , etcetc,....

ran fine still does now, however i had the problem of shutting the bonnet too.

it was an old retired mechanic who told me what engine mounts to try. i would have never have known other wise and probably would have had to get a custom bonnet made.

Edited April 12, 2008 by nizmonut

[R32 TT]

hehe, grab the engine mounts from a LD28 powered laurelor R31 skyline station wagon, because of the deck hieght on the block the engine mounts are shorter,

This is interesting! Any idea how much shorter they are? Obviously there is only so far you can lower it before the sump hits the cross-member, particularly once the 10mm 4WD adaptor plate is in there too..

Did you have to cut anything from your bonnet - or nothing at all? And are you running twin low-mounts still?

[shanef]

This is interesting! Any idea how much shorter they are? Obviously there is only so far you can lower it before the sump hits the cross-member, particularly once the 10mm 4WD adaptor plate is in there too..

Did you have to cut anything from your bonnet - or nothing at all? And are you running twin low-mounts still?

clearance is 2 parts of f**k all unfortunately

http://img.photobucket.com/albums/v315/Tha...Build/Diff2.jpg http://img.photobucket.com/albums/v315/Tha...0Build/Diff.jpg

[R32 TT]

clearance is 2 parts of f**k all unfortunately

http://img.photobucket.com/albums/v315/Tha...Build/Diff2.jpg http://img.photobucket.com/albums/v315/Tha...0Build/Diff.jpg

Are we talking metric?

[rockabilly]

hi guys, not posted for a while.. after some advice as usual.. my rb26/30 has now done 2500 miles no problem whatsoever, but is under turbo,ed.

specs is as follow,

rb30 block decked bored to 86.5mm

spool rods, cp forged slugs.

acl bearings,arp bolts everywhere.

trust sump

1000cc injectors, twin in tank tomei fuel pumps.

hks drag 4" intercooler..

1.0 tomei headgasket.

jun stage one cams 264/272 9.7mm lift.

full extreme turbomanfolds kit using a gt35r 1.06 rear 4" dump

car made 680bhp 645lbs @ 5500rpm but drops off after 6500rpm,s

pm,ed leigh ref replacement kit as i have a buyer for mine.

thinking of going t4 flange and twin scroll.

leigh suggested gt4088r or 4294r

not sure what rears to use on either, or spooling times on either too?.

looking for 750-850 bhp @ the fly..with a good spool.

cheers bernie.uk

Edited May 18, 2008 by rockabilly

[TuneR32]

just thought i'd post an update:

the engine with this girlde had a turbo failure at the mid week track day and the motor has been pulled down.

the mains were looked at and there is not 1 sign of cap walk!

Hey guys, just for your interest, mine was the engine with turbo failure (moral: always ask to see the receipts for "new" turbos). Just about to begin the process of running it in, should be having an early power tune next week. Will keep you posted as to what it ends up with. Running standard garret T28/40's, low mounted. For those thinking of the conversion from a gtr, its a very different beast to drive. If you like your car to feel light and punchy, imho stick with the rb26.

[Marko R1]

who else here is running the rb30 conversion in a gtr - im seriously weighing up my options...currently making 325awkw on my rb26 with hks gtss low mount setup

regards

[rockabilly]

i run one mate in a 33gtr . homebuilt done 5500 miles in it now no probs,. search my name for threads. currently its running 2.5 bar boost on a gt4094r blower about 800bhp @ the fly..bernie uk.

here,s my old turbo spec sheet.

http://www.spoolimports.com/content/Bernies700BHPGTR-UK.asp