rb26 instalition

[Guest tigersharkr33]

hi,,,,to every one am new here.

i have skyline gtst with rb25det,am just wondering what to do!

my goal is to get around 600hp

i have rb26dett engine withe ecu and wiring,

if you are in my situation will you go for swap or modify the rb25det,and in case of swap how it can be done?????

[hungry6]

i've just finished the conversion ur thinking of , and OMFG there are virtually nil swap over and wait till u get to the mangement section. but there i a very bright light at the end of the tunnel, if u got time a tatience then do it as a the amount of little odds bits that have to be done, it would cost a fortune or they would quickly bodge it.

[Cubes]

At the end of the day the RB25DET will probably be cheaper to get up over the 250rwkw mark. i.e a single turbo vs 2 turbo's.

[Guest tigersharkr33]

any more ideas.

[Cubes]

I personally wouldn't bother with the RB26DETT Conversion.

I would mod the RB25 up to 300rwkw if that still wasn't enough then by then you need to start toughening up the internals so i would look at slapping a 3ltr bottom end and rebuilding that instead of the rb25.

[GTS500]

i've just done the rb26 conversion but was running the autronic smc computer management system prior and found it quite easy.there was a slight mod to be done to the cross member,pulley to be pressed 5mm of the power steering pump to match 26 front pulley'and re-piping intercooling.radiator,throttle cabel,thrust bearing and gearbox all fit no problems.well worth the effort.i hope this helps.

[Cubes]

GTS500 how does the Power delivery feel compared to the RB25DET's? i.e off boost, spool speed, response etc?

[gtrken]

Originally posted by -Joel-

GTS500 how does the Power delivery feel compared to the RB25DET's? i.e off boost, spool speed, response etc?

Drive a GTR and that will probably give a fairly good indication maybe ?

Cheers

Ken

[Cubes]

True, however the GTR is a heavier car and also has different gearing. So it cannot be compared.

Different motor in the same car before and after is a good compare I would think.

[GTS500]

when the rb25 came out it had 320hp with a small turbo the rb26 has a large turbo that is laggy till 4000rpm and then turns the tyres hard until the rev limiter kicks at 9000.its wild but blew third gear in the box on second test drive at 500hp and 19psi on bp ultimate.its the best thing i've done

[gtrken]

Danny , thats comparing apples and oranges.

The RB25 was fairly stockish but that RB26 is a freakin animal.

Got the box back in yet ?

Cheers

Ken

[Cubes]

9000rpm would be pretty unreal.

[GTS500]

hi Ken , no box yet they have to make one from scratch and thats going to take another 5weeks and 4 days not that im counting

[Cubes]

Here's some 3000cc power in a 32 GTR down the 1/4 ET 150mph on street tyres.

http://www.japanesemotorsport.com.au/46rot...tor2003Kier.mpg

[GTS500]

Not bad at but does it still have that sweet rb rumble

[Micko]

Originally posted by GTS500

Not bad at but does it still have that sweet rb rumble

That sweet rb rumble takes on a whole new meaning with the cams you got in your engine:D

[Dahtone Racing]

wat about fitting an RB26 or an RB25 into an r32 gts?

ne suggestions

[Clint32]

2GU UP, depends on what you want the car for, if you drive it regulary just change the turbo and do teh usual stuff (cooler, exhaust etc) and you will make a easy 220rwkw. If you want more then you have to start decidng if it is worth changine the engine, but the costs will be much larger than doing a few simple mods.

[Cubes]

I was fiddling around with a turbo calc last night and it appeard that what really hinders the RB30DET is the lack of rev's compared to a RB26. The RB26 will rev to 9000rpm where as the max the RB30DET can rev to is 7000rpm - 7500rpm due to harmonics.

Basically the RB26DET was better for all out power in the turbo calc.

However it isn't always about all out power.. No good boost coming in at 3/4 of the rev range for a street car.