Fully Built Rb26

[SHWPNY]

Hey guys!

Just whondering how hard and to what rpm can a fully built rb26 containing pistongs, rods, bearings, head gasket, cams and all the bolt ons.

[supadan]

depends on wot pistons and the such u use

[Omurru]

and how long you want it to last i'd say 8-8500 is a happy figure....

[Kinks]

how long is a piece of string?

it depends on what was done, and how confident your engine builder is in his work. he is the one to ask what a safe rev limit is.

[Adriano]

10500, just dont hold it there

[Faid]

it all comes down to how well the enigne was built. how precise was the block bored, the clearances cheked and matted up to be near the same. what kinda bearings did you use, do you use a damper to surpress unwanted crank harmonics. and how good was the assembly balanced. on the build engine id run 8000-8500 plenty for street. i run a 10200 revlimiter but my engine was built to precision by one of the most experienced machine shop crew in my country (at my workplace). we took our sweet time to build the engine from scratch and do evrything precise. its all up to your engine builder and how confident he i in his work

[Duncan]

why do you want to "rev" it? where does it make peak power?

[Spoolup]

Thats the question - where is peak power. If it makes peak power at 7000 then no point reving it past that, if its 8000rpm etc etc. Where ever the power starts to drop off is where you want to shift into the next gear - otherwise your slowing down :-)

[FuManChou]

If you google you will find a formula that determines piston speed. From memmory 35m/s is the most avg piston speed but that may be wrong.

It really all depends on stroke vs bore etc. Also the factory crank should be turned to no more than 9000rpm having said that you can go higher but how long it lasts at those rpms is anyones guess

[Blitz]

15,000 RPM would be the max for daily driving, don't go far past that though or you run the risk of damaging your rotator splint.