R33 Rb30 Conversion

[deant1]

all seems clear now! thanks for the info

[Dahtone Racing]

finally got mine up and running

sounds like a 13B when it revs, i love it

had it on the dyno this arvo and on the first power run it killed the clutch LMAO

RB25 box and twin plate on the way

Edited December 3, 2007 by 2GU UP

[deant1]

what did you do to it? forgies, rods? what comp did you go for.

[Dahtone Racing]

R32 RB25DE head

GTR valve springs

mild port work

custom plenum and exhaust manifold

CP forgies

stock rods

35/40 turbo

38mm external gate

microtech

nothing crazy

dunno the comp ratio

Edited December 3, 2007 by 2GU UP

[SirRacer]

Just looking through the r32 service manual and it says water outlet so i would presume this is where the water is taken from, not sent to?

Is yours done like this Joel?

Edited December 3, 2007 by SirRacer

[Cubes]

Sorry I didn't reply to your pm SirRacer; I was meaning to grab some pics today but didn't get around to it.

The RB25 and 20's have a water line that runs from the drivers side of the block around the back of the head then in to the turbo. The line delivers its cool water to the turbo directly from the thermostat housing.

I've had a quick look in the engine manual and its hard to see how the rb26 is setup. :S

Need pics ppls.

I've attached a pic of a 26 head. The arrow points to where the rb20 and 25 water return secures.

[SirRacer]

Ill go and get a picture of my head this week and post it up. So will i simply need to tap into there and run my line directly into the turbo from there, and then once its finished back into the slot in the block?

Is this how they run factory? Im really not sure, where they get their feeds and so on from. I always thought the block one was it and never thought re the return.

The smaller things are becoming the annoying ones in getting my engine going.

Thanks for the help. If you dont mind getting some pics, id be very greatfull. The engines at the fabricator and hes screaming out where to take the water from and i cant tell him at present as im so bloody confused.

Edited December 3, 2007 by SirRacer

[SirRacer]

Im normally half intelligent but im mixing things up here.

Have replied in bold

Sorry I didn't reply to your pm SirRacer; I was meaning to grab some pics today but didn't get around to it.

The RB25 and 20's have a water line that runs from the drivers side of the block around the back of the head then in to the turbo. The line delivers its cool water to the turbo directly from the thermostat housing.

So this is the line that we tap into and run directly to the inlet of the turbo, with the hot water going back into the bottom of the block?

I've had a quick look in the engine manual and its hard to see how the rb26 is setup. :S

Need pics ppls.

I've attached a pic of a 26 head. The arrow points to where the rb20 and 25 water return secures.

Water return would suggest this is where the hot water goes, once its come from the turbo. Very confused

[s13_Skyline_inside]

so you reckon that the line that comes out of the block under the exaust manifold is the feed? and that the line that runs around the head is the return?

I'm pretty sure its the other way around, the water returns back into the block, as the water that runs around the block is the hottest part of the engine due to that being where the action is, cylinders. and that the water exits the engine via the thermostat, others have said otherwise but im still pretty sure this is the exit not the entry. and the 26 would be the same as the rest of the rb series as far as the direction of flow goes.

but for a 25 or 20 its simple just fit up to the standard pipe that runs around the back of the head, just where the arrow on the pic is there is a thin tube not sure what size exactly but its the only thin metal tube that runs behind the head, the return back into the block, pretty sure there should be a welsh plug or somthing if its a non tubo block that goes into the water gallery.

if you've got a turbo 25 or 20 block around see where the water return is on them, then look at your rb30 block, if its a non turbo there should be a grub screw kind of thing or a welsh plug or somthing blocking the hole

[SirRacer]

Heres an email from Rob at Rips in NZ www.ripsltd.com who builds the occasional Rb30

Hi,

I pick up water from the back of the block on the turbo side and return the water from the turbo to the front of the plenim, see pix.

Regards Rob

Is the thermostat housing where the water goes out of once its finished in the engine, or is this the point where it is taken from?

Have attached picture for everyones info

Edited December 4, 2007 by SirRacer

[[200]]

[bubba]

^^ nice!

Think I had a lifter collapse in my DE head a couple of days ago, going to rip the set out of the ol' RB20 tonight and whack them in the 30 on Friday. Also got my hands on a GT35R.. need to measure it up and see if it will fit low mount O_o

[shanef]

carillo rods eh, so wheres the pics of the billet crank?

[[200]]

Trying to find someone that will make one at a reasonable price.

[shanef]

Trying to find someone that will make one at a reasonable price.

well when u do let me know!

[deant1]

would running a gt35r @ 9 compression ratio be safe? or would 8 5 be better?

[GDZ1LA]

well when u do let me know!

same question t78 -33d 17cm exh 100ron with large overlap cams 9.7:1 currently..

[Gts-t]

Hey joel,

which standard pistons do you think are the go for a rebuild. Im thinking about using acl but reading thru the 300 pages i noticed somewhere along the way you didnt rate them

cheers mate

[deant1]

same question t78 -33d 17cm exh 100ron with large overlap cams 9.7:1 currently..

i'm no eert but i think 9 7 is getting pretty high. sure someone with a bit of knowledge will shed some light anyway.

[GDZ1LA]

thats static 9.7-9.8 dynamic seams to be 8.9:1 which comp should i take into accout?

ENTER YOUR DATA CALCULATED DATA

Cylinder Head Volume (cc) Cylinder Head Vol

(cubic in.) 04.026

Piston Head Volume (cc) Piston Head Vol

(cubic in.) -0.915

Gasket Thickness (in.) Swept Volume

(cubic in.) 31.851

Gasket Bore (in.) T.D.C. Volume

(cubic in.) 03.583

Cylinder Bore Diameter (in.) Gasket Volume

(cubic in.) 00.472

Deck Clearance (in.)

Note: Neg. nubmer above deck, Pos. number below deck Deck Volume

(cubic in.) 00.000

Stroke (in.) STATIC COMPRESSION RATIO 09.889

OPTIONAL DATA

Rod Length (in.) Adjusted Stroke (in.) 03.094

Intake Closing Point (degrees)

ABDC @ 0.050 lift plus 15 degrees DYNAMIC EFFECTIVE COMPRESSION RATIO 08.956