dondesoto
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Posts posted by dondesoto
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Item: RB25DE block , crank and conrods
Age: approx mid 1990s
Condition: good
Price: $ 100 the lot
To Fit: (What car) any rb25
Location: Brisbane ( Coopers Plains )
Contact: ph 0413 546 380
Comments: PICK UP ONLY
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When you say deck the block to bring the edge of the pistons flush with the top of the block, probably a dumb question, but your meaning the top of the dome of the piston right?
Nup . I mean the outside edge of the piston , all of the dome is above the top of the block .
Everything else you got pretty right . The 1st engine I didnt do anything to the rods , this time I,m getting rods crank and pistons balanced . As you will probly make less than 200 rwkw , the standard rods are plenty good enough .
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Is anyone doing the RB25/30 N/A Conversion with RB25DE N/A pistons, remembering hearing about this fellow with a 240z who used,
RB30E block, crank and rods, RB25DE N/A pistons and decked the block to get about 10.5:1 compression ratio - using the pistons to get a higher compression ratio as opposed to shaving 2mm of the head would be a better idea wouldnt it?
Has anyone gone down the RB25DE N/A piston route when building there RB25/30 N/A motor?
Yes i built the rb25/30 , that i sold to Skit . I used the stock rb25de pistons on the rb30e rods . Edge of pistons were sitting 1.2 mm below top edge of block , that was supposed to be good for 10.5 -1 compression , but i have recalculated that because head gasket thickness wasnt allowed for before . Also the rb25de pistons sit above the edge of the block , i measured .5 mm , just as well the head gasket is around 1 mm thick . So i figure the compression to be around 9.8-1
I,m now building another rb25/30 , again using rb25de pistons on the rb30e rods . This time the block is being decked 1.2 mm to bring edge of pistons flush with top of block at tdc . I dont want the pistons sitting above the deck like they do in rb25de . i calculate the compression to be 11.0-1 with this set up .
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Item:R33 injectors and rail
Age:94model 55klms
Condition:Working when removed
Price:$50
To Fit: R33 skyline
Location:Brisbane
Contact:PM or post here
are they from a turbo or non turbo ?
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gday , does it come with a hand controller
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i think don is your man.
head to r31skylineclub.com and try searching there.
[/quote
Yep I,m doing a vh41de ( allmost same as vh45de) conversion . Auto trans bolt direct to r31 manual trans mount . Made up new engine mounts . Had to notch sump to clear steering rack , and had to remove front sway bar .
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Model: 1987 R31 Skyline Ti
Engine: RB30DE with VVT
Modifications: Extractors, exhaust, twin tb, safc untuned, billet f/wheel, reground surecams, 10.5 compression, 18 degrees timing, 98ron ultimate
Power: 150.9RWKW @ 172kmph an 507nm (374FtLb) torque at 144kmph
with more left in it, she's an economical daily but rich and restricted above 5000rpm so once thats tuned/fixed i'll be a happy camper
I built this engine and ran it in my 86 r31 Skyline station wagon . With a 4.11 locked diff , 195,60x14 radials @ 20psi , i recorded a best 1/4 mile of 14.15 @ 97.6 mph at Willowbank dragstrip 16-8-2006 .
Also at Lake Gairdner speed trials 2006 ,max speed of 141.18 mph ( 227kmh ) using 3.7 diif with .75 OD . ( had fuel starvation prob )
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whats the progress don?
progress , umm xmas , too much work , relatives stayed for 2 weeks . how many more excuses am i allowed . Engine on one side of workshop , car on the other , looking at each other . Engine bay stripped ( 6 cyl engine and box sold ) , want to give engine bay a wash and paint , then start fitting . well run out of excuses so will get going again
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sounds like don
Don here , not me , I,m doing a VH41DE into my r31 station wagon .
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Gday , not here to brag about my car . Heres a few things i did to my RB30DE to get 14.1 @ 97 mph . For starters its in an r31 station wagon and only wieghs around 1300 kg . Get as much wieght out as possible , like spare tyres tool boxes , towbar if it has one .
Am using a rb25de gearbox , so same ratios as yours . Diff has 4.11 pintara gears and a mini spool ( locker ) . Tyres were just 195 60 x 14 radials with 20 psi . Advanced the ignition timing approx 4 degrees , diconnect the vvt solenoid . Diconnect the exhaust at the end of the extractors ( you,ll love the noise too ).
Hope this helps you go quicker .
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as written on r31 skyline club, VERY interested!
Whats been done to the bottom end?
also, are you using the factory RB30e fuel pump?
That is pretty much the EXZACT engine ive been planning on building, its perfect...
Bottom end . I put in new big end bearings , rb25de pistons with new rings , replaced all gaskets and seals . Steel billet flywheel .
I used a Bosch 040 in tank fuel pump .
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extra pic added
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RB30DE WITH RB25 5 SPEED
I built this engine in Jan 2004 . RB30E bottom end withRB25DE pistons which gives 10.5 - 1 compression . RB30E extractors modified with new port matched flange plate and 1 x secondary pipe lengthened to suit . It bolts to a standard bolt pattern cat converter .
Serires 1 RB25DE head . V.V.T. connected via oil pressure feed teed from oil pressure sender .
Cams have been reground by Surecam in Sydney 255degrees duration with 8.2 mm lift .
I built the twin throttle body manifold and has RB25DE throttle bodies fitted and 1 x RB25DE air flow meter . The A.F.M. is controlled by an Apexi SAFC 2
Malpassi fuel pressure regulator fitted with50 mm gauge .
RB25DET injectors 370 cc
RB25DE 5 speed gearbox . Steel billet flywheel from the Rodshop in Vic . RB30E turbo clutch and pressure plate and starter motor . Scattershield of 1/4" steel plate around clutch flywheel area .
This is a well sorted combination that idles smoothly at 700 rpm , lots of torque and returns great fuel economy . The oil has been changed every 5000 km and only used Shell synthetic oil ( $ 60 - 5 ltrs )
Comes complete with wiring harness , RB25DE ECU and Apexi SAFC 2 . Also included is a workshop manual for the RB twin cam engines ( cost me about $ 250 ).
I had this setup in my r31 station wagon .
PERFORMANCE
1/4 mile 14.15 @ 97.6 mph 16/8/2006
Max speed 141.18 mph ( 227.2 kmh ) average speed over a timed mile at Lake Gairdner speed trials March 2006 .
In Brisbane and can ship interstate at buyers expense .
If your drivers license restricts you from having a turbo powered car , this could be the engine for you . As you can see by the perfomance figures it would leave a stock rb25det behind ( dont know about neo engines).
Best to phone me on 0413 546380
$3500
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GDAY , i had all intentions of getting out to the Jamboree , but just .. excuses i wont bore you with them .
Am still interested in the auto box , ph me on 0423 546 380 .
regards
Don
Sorry gave you wrong ph no , its 0413 546 380 or work 32768781 or h 33799091
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Hey Don, gearbox is yours if u want it... my PG should be here in a month or so.
GDAY , i had all intentions of getting out to the Jamboree , but just .. excuses i wont bore you with them .
Am still interested in the auto box , ph me on 0423 546 380 .
regards
Don
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I will make the effort to get out to Willowbank . I believe they have loud music playing and young girls showing off all the good bits , BUGGA , I want classical music and nannas . ( well i am a grandpa )
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Congratulations on the times at Willowbank . Would have liked to be there and hear your car . Cant wait to hear mine on full song flatout with open headers at next years salt lake speed trials .
Am interested in your present auto box if you think of selling it . My box is still the stock auto .
Just goes to show you how tuff these engines are , as you say your internals are still stock .
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Saw a white R33 Skyline travelling west on Ipswich rd near Darra . Monday around 530 pm. rego no 906GPA
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IH8VEE8S here with new account
dondesoto - hehe how fast have you been in that thing?
Nizmo - love 350Zs specially in black
Jimbo - nice very pimp'ish
Smadge - RB25DE in a black r32 with sunroof.....sweeeeetttt
georgia - red looks very nice on series2s and pretty uncommon. like the rims too
1/4 mile 14.15 @ 97.6 mph 18-8-2006
Salt lake speed trials 7-3-2006 , 141.18 mph ( 227 kmh ) average speed over a timed mile . Have seen 152 mph tacho reading once @ the salt lake .
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I know its not an r33-34 , but at least its N/A . RB30DE . Engine is best looking part of the car .
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I have a rb25de head on my rb30 . I use the stock rb25de ecu and an Apexi SAFC 2 . I also have an air fuel ratio gauge fitted . I have no trouble setting fuel mixture and get good fuel economy. Your engine shouldnt be running rich if its standard , check to see if your water temp sensor is working and sending a signal to the ecu . Unless you have done some modifications to your engine to increase performance , theres not much to be gained by fitting a piggy back ecu .
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Hi, my dad and i are attempting to adjust the engine timing for more advance, however we are unable to move the CAS, we have loosened three mounting bolts and it still doesnt move..I've got a R33 with an RB25DE for your info. Any help would be appreciated.
It definitely should move . Undo the 3 x locating bolts at least one full turn . It could be stuck to the gasket , and they do cause a slight indentation in the gasket which may prevent it from turning if bolts are only slightly loosened .
I would only andvance it 4- 6 degrees . I advance mine 4 degrees and use ethanol 10 petrol which has an octane rating of equivilent to 103 .
Qld Rb25de Block
in For Sale (Private Car Parts and Accessories)
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