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Save My Rb26

QYQ

By QYQ,
in Engines & Forced Induction

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QYQ Enthusiast

QYQ

Posted
Posted

Next month I'm about to pull the pin on some 2860R -5 but have some question about the marriage between the turbos and my engine. The old bird has done 197,000km and she runs quit well. She is stock and only has an exhaust and PFC as mods. I'm just wondering if these turbos are going to kill the engine or are there supporting mods I can do to make the union work without a catastrophe or is there a safe boost range to work within?

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KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

Its all in the tune. If you are worried you can do a compression and/or leakdown test but there is no way you can get more power from your engine without increasing loads. The amount of boost is irrelevant - either you want more power or you don't. Plenty of people have increased the power on their unopened engines - some last for years some don't. The only thing you can do usefully is use quality synthetic oil and get a really good tune.

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GTRPSI Mentor

GTRPSI

Posted
Posted (edited)

Its all in the tune. If you are worried you can do a compression and/or leakdown test but there is no way you can get more power from your engine without increasing loads. The amount of boost is irrelevant - either you want more power or you don't. Plenty of people have increased the power on their unopened engines - some last for years some don't. The only thing you can do usefully is use quality synthetic oil and get a really good tune.

Pretty much what Kiwis4t said.....

If the leakdown and compression test come back good, some good oil and a good safe tune is all you need. (and supporting injectors, fuel pump etc)

Edited by GTRPSI
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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
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fuark, mine's a mint Edward Lees R33. Shows 149xxx but body says it has about 350xxx.

Rust was hidden with sound deadening, motor had leaks on rear main seal, front main seal, cam covers etc.

Did all the maintenance work and now sees 23 to 25psi err day stock motor and gets raped on the track, albeit it's a shit box GTS-t so yours being a GTR you have no worries.

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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Who's Edward Lees?

awesome car yard in Sydney that can supply any car with the kms you want lol.. they simply wind the clock back to what you want and tell you they've found this mint car from Japan LOL

I personally didn't buy my rust bucket from them, but the previous owner did!

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QYQ Enthusiast

QYQ

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I'll take kiwi and johns advice on board Thx for the suggestions.

The reason for my concern is that I read somewhere that -7 and -9 place less stress than the -5 and that the smaller turbos would be a better choice for an engine that's travelled further. Don't know if the information is good but by the sounds of things seems as though ppl here are quite optimistic with the strength of the RB 26 lashing out the power regardless of Km's.

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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

I'll take kiwi and johns advice on board Thx for the suggestions.

The reason for my concern is that I read somewhere that -7 and -9 place less stress than the -5 and that the smaller turbos would be a better choice for an engine that's travelled further. Don't know if the information is good but by the sounds of things seems as though ppl here are quite optimistic with the strength of the RB 26 lashing out the power regardless of Km's.

MotiveDVD guys have their stock motor R32 GTR making over 450kW at all fours with only new headstuds and a head gasket.

These RB motors love it.

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