Rb26 Or Rb 30

[Angus Smart]

Something else to add to the fire with your rb30 boys..

rb30 block with rb26 crank... There was a post on here a while back from an engine shop down south! dig that up it had some pretty nice looking results!

[Angus Smart]

WOW Dirtygarage you are amazing and if anyone didn't already know it I'm sure you'll start a thread telling them how amazing you are. As per usual you'll build a RB30 redesign the wheel in doing so then crow how great it is and expect all to forget how much in the past you've bagged them as they are a forklift motor.

I would have said something more along the lines of a BOAT motor the way them vl's dirve!!!

[Swiper the Fox]

I would have said something more along the lines of a BOAT motor the way them vl's dirve!!!

hey leave the VG30 brigade out of this...you will have Johnny P in here soon asking "did someone say boat?"

Edited March 4, 2009 by DiRTgarage

[N1GTR]

Andrew you mean the RPMGTR thread

[Angus Smart]

hey leave the VG30 brigade out of this...you will have Johnny P in here soon asking "did someone say boat?"

Oops shit Paul, Sorry haha we wouldnt want that now!

Andrew you mean the RPMGTR thread

Hey Steve, dont think it was race pace. Rhemac was the one i think

http://www.skylinesaustralia.com/forums/Rb...l&hl=rhemac

[N1GTR]

Ah yeah that one

[Guilt-Toy]

My RB30DET with a totally stock rb25 head, cams are stock as well. no mods no port jobs nothing makes full power by 3700rpm and it does not drop off all the way to red line.

Can you get a RB26 to have a flat power curve like this? if so.. show me.

[SLAPS]

There was also a mark99 here in SA that built an RB29 using an rb26 block, slightly destroked rb30 crank, forged rods and custom low pin height pistons.

Rev'd to 8.5k and made some awesome power. There's a dyno sheet laying around some where that was posted.

The rod angles are of concern but it has held together without any issues so it may be a moot point.

[sneakey pete]

Something else to add to the fire with your rb30 boys..

rb30 block with rb26 crank... There was a post on here a while back from an engine shop down south! dig that up it had some pretty nice looking results!

Since rb30 and rb26 both have the same bore, wouldn't a rb30 block with a rb26 crank just be... a rb26?

[shanef]

Since rb30 and rb26 both have the same bore, wouldn't a rb30 block with a rb26 crank just be... a rb26?

nope, rb30 block is taller by 38mm

[T04GTR]

yes. anyone heard of the hks "hi-deck"....albeit 2.8L

[PM-R33]

My RB30DET with a totally stock rb25 head, cams are stock as well. no mods no port jobs nothing makes full power by 3700rpm and it does not drop off all the way to red line.

Can you get a RB26 to have a flat power curve like this? if so.. show me.

Wow

[shanef]

yes. anyone heard of the hks "hi-deck"....albeit 2.8L

have a search on gtr.co.uk/forum dave, i remember seeing atleast 1 setup on there.

but form what i recall its like the kakimoto hi-deck where its a compression deck with liners

[Blitz]

yes. anyone heard of the hks "hi-deck"....albeit 2.8L

Yes

[Slide]

Bottom end first

But yes, I will take you up on your offer from that call

Everyone knows that big cams get the chicks Steve-o

I didn't know you liked doing the bottom end first still, i thought therapy fixed that? ... Zing

Throw away the little ones and put in the 280's.

I want to get rid of them

I don't know why people are so afraid of spending the money on a big head job :s

yes. anyone heard of the hks "hi-deck"....albeit 2.8L

Selling 2 kidneys is not advised.

Would be better to throw the money at developing a new block.

[Swiper the Fox]

Everyone knows that big cams get the chicks Steve-o

I didn't know you liked doing the bottom end first still, i thought therapy fixed that? ... Zing

Throw away the little ones and put in the 280's.

I want to get rid of them

I don't know why people are so afraid of spending the money on a big head job :s

Selling 2 kidneys is not advised.

Would be better to throw the money at developing a new block.

A good head job is always the most satisfying way to 'blow' your cash.

PM me a price on the 280's Aaron...i might take them.

My RB30DET with a totally stock rb25 head, cams are stock as well. no mods no port jobs nothing makes full power by 3700rpm and it does not drop off all the way to red line.

Can you get a RB26 to have a flat power curve like this? if so.. show me.

Thats an unfair advantage Guilt-Tripper...you tuned it!

Edited March 5, 2009 by DiRTgarage

[Slide]

A good head job is always the most satisfying way to 'blow' your cash.

PM me a price on the 280's Aaron...i might take them.

Thats an unfair advantage Guilt-Tripper...you tuned it!

Coming right up Sir Boost Alot

[sneakey pete]

nope, rb30 block is taller by 38mm

Wouldn't that completely mess up the compression ratio's then? I'm still trying to get my head around how it would actually work, putting a rb26 crank into a rb30. The block is taller, yes, but doesn't that mean your going to run into problems because the rb26 crank will still have the same travel, even when its put into the rb30

Edited March 5, 2009 by sneakey pete

[R31Nismoid]

My RB30DET with a totally stock rb25 head, cams are stock as well. no mods no port jobs nothing makes full power by 3700rpm and it does not drop off all the way to red line.

Can you get a RB26 to have a flat power curve like this? if so.. show me.

Not too far of the mark

overall terms, your graph is flatter for a section, this one comes up a bit smoother

Do you have a larger pic of the graph for km/h and/or RPM to look at?

[Scooby]

A good head job is always the most satisfying way to 'blow' your cash.

I see what you're saying now; if you 'blow' your cash -presumably a 'wad' of it or at least the cost of a good 'pearl necklace'- on a good RB26 head job you can't 'come' at or 'swallow' the idea of the RB30 being better, and suggest that anyone who thinks otherwise is being 'sucked in'.

Have I got that right?