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Rebuilding My Rb26?

danoz

By danoz,
in Engines & Forced Induction

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danoz Collaborator

danoz

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Posted

my rb26 is curruntly in peices at a brisbane work shop. bearing let go dur to a dyno tuner advaning my time to much and ****** it. so i need sum advice on the followin.

get it rebuilt standard pistons and rings bearing and crank and block to be machined

or

hks over sized pistons and rings hks rods n1 bearing and standard crank and n1 block to be re-ground

?????????????????????????????

what power will and standard motor hold vs the hks 1 and is there anything im missing in the second opion with the hks rebuild any info would be great thanks?????

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https://www.sau.com.au/forums/topic/125969-rebuilding-my-rb26/
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danoz Collaborator

danoz

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Detonation hurts the big ends as well a the piston itself.

yer detonation did hurt it damaged big ends and scored the crank and block so thats why i want to do it once and do it proply so i got a good strong reliable motor and also the shop is paying for the motor to be rebuilt to stock spec aswell as the machining so i only have to pay the diffence between stck rebuild and the hks opion and there paying labour as the motor is already out and getting rebuilt any way.

just dont no if thats all i need the make it a strong bottom end???? support mods are hks exhust and dump pipe apexi pfc and avcr amd fmic car is a cefiro with drift set-up i live in W.A and havnt got it over here yet

http://s74.photobucket.com/albums/i243/danoz_01/

djr81 Grand Master

djr81

Posted
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Well if they are paying for the most of it - get the good gear I say. You will end up with something that is more durable, has more hp potential and is worth more $.

There is a large number of threads discussing rebuilds, so best bet is to do a search. If the motor is out of an early R32 make sure you do something about the oil pump drive on the crank. Beyond that, the world is your oyster......

Guest Mashrock

Guest Mashrock

Posted
Posted

i'd for sure go aftermarket pistons, rods (tho the standard ones will be fine for 350-400rwkw with good rod bolts)

aftermarket oil pump. n1 item is good. as are others. make sure you get oil restrictors in the block and a decnet sump/oil setup.. tomei make alot of good bits for oil etc.

i'd make sure the oil problems are addressed. and that would be my primary concern.

The Dan Grand Master

The Dan

Posted
Posted
cheers guys does any1 no roughly what a stock rb26 can make in rwhp reliable everyday and also what is the weakest point in the rb26 motor in stock form thanks

Weakest part of RB26DETT is leanout on 5 and 6. Big ends go because of oil problem in sump design. Nothing wrong with the factory oil pump.

R31Nismoid Grand Master

R31Nismoid

Posted
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Big ends dont go because of an oil problem due to sump design.

If there are 350rwkw+ GTR's running around here in Vic with a stock sump, its definately a case of Myth Busters

Its other problems, and everyone points the finger @ the sump incorrectly

GTRgeoff Grand Master

GTRgeoff

Posted
Posted

Just to add to the oil discussion, I recommend the oil pump be thoroughly checked and the screws into the back plate then loctited in. It's amazing how many reports I get of the screws going loose. Just how many screws loose does it take before oil pressure is severely reduced? Not sure yet.

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