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Rb26dett Rebuild For Up To 350kw Atw....whats Needed?

nsta

By nsta,
in Engines & Forced Induction

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IDO 11S R32 Collaborator

IDO 11S R32

Posted
Posted

WRXHOON is probably on the money, dont know about needing a new block though. Although if you want 100% reliability you probably should consider an N1 block or somthing similar. I have just about finished building mine and I have spent somewhere in the regin of 10k, and my motor already had forged internals. I am aiming for the same power figure as you. I have chosen a set of garret 2860R-5, I got these from CRD for $2500 I have a set of Trust cam gears, trust oil cooler, trust bar and plate intercooler, trust hard pipe kit, trust type R plumb back BOV, sard 720cc inj, nismo fuel pressure reg, apexi power fc dejetro, (using this cause mine has had a single throttlebody conversion), blitz duel solinoid boost controller. I have the car together now and it drives ok, (havnt fitted computer or boost controler or inj yet) so car in not tuned for this set up. But from what I can feel the turbos are really responsive and continue to make boost well into the upper end of the rev range. I will have it finished and tuned by mid jan so will let you know how it goes. I didnt pull mine apart and as far as I know it is still running a stock oil and water pump.

ANyway good luck with your build!

shanef Grand Master

shanef

Posted
Posted

find an engine builder and ask all these questions with him. its useless asking everyone here caus all ull get is heaps of different replies with differing outocmes and ull still have nfi of what to get/do.

nsta Mentor

nsta

Posted
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Posted

thanks for all the responses, helps alot.

Maybe 300rwkw would be a better goal for the time being, reliability being the key.

Head is off, what else could i do while its off that i can easily get access to and replace for my power goal - many seem to make this power on a stock rb26 without too much problems, but since im doing my gasket i don't mind strengthening while its off (whatever i can reach without opening the bottom end)

Engine already has forged pistons (wiseco), and N1 oil pump, everything else seems stock, im getting a new gasket fitted and arp headstuds.... and changing turbos to steel gt-ss, but need to know what supporting mods will need to be fitted for reliability....internals also if easily accessible when head is off.

thanks:)

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
I have seen plenty cracked with less power than that, of course some won't.

I concur.

There have been a very good number i know about also.

Many factors that contribute to that however. Most application and spec of the car that the build itself.

STATUS Grand Master

STATUS

Posted
Posted
I concur.

There have been a very good number i know about also.

Many factors that contribute to that however. Most application and spec of the car that the build itself.

most ive seen can be traced back to the build more so than the block itself...... at 350kw it should last a long time... but push it for a long time at say 380-400+ then i would be nervous. Both blitz and trust set their limits on the std block at just shy of 400 when i asked them many moons ago..

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

again, depends on setup.

There is a lot to do with it, not just the motor build itself (some aren't built, some are)

suspension/traction/purpose play as much a factor as anything else

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