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lol, another case of Sump Baffle Syndrome (SBS)!

Are you guys personnally aware of any RB25DET that has had problems caused by oil surge on the track?

I will admit that I have heard of some RB26DETTs in race cars running slicks that have had problems, but not 25s.

Yeah mate, a big sump will be a good idea - especially once the truck turbo goes on and the pistons have no ring lands left on them - you'll be burning more oil than fuel!!!!! Thats where the extra capacity will come in handy!!!

Nah seriously though, not a bad thing to get, and maybe a oil cooler as well. Did you contact the place in Victoria?

Hi Duncan, "I will admit that I have heard of some RB26DETTs in race cars running slicks that have had problems"

We have rebuilt 3 X RB26's that had problems, no slicks. Two just had normal road tyres, one had R type tyres. But like you, I would like to hear from anyone who has had a problem with oil surge in an RB20 or RB25 in a RWD chassis.

Yeah, and another of the club's RB26DETTs on road tyres blew up at Eastern Creek about 12 months ago.

But really, AFAIK these examples are all *really* hard track driven cars, and all GTRs. I just think there is a bit of hysteria regarding SBS (Sump Baffle Sydnrome) on the forums at the moment.

The main reason for bigger sump was as a substitute for a cooler. I've assumed that the bigger oil capacity would be enough to give the motor a bit of protection during the occassional hills blast and track days.

I have also assumed the big sump would be much cheaper and simpler than cooler setup.

So RB26 vs RB25 oil pressure issues are simply due to

- exit corner G force with GTR vs GTS-T or

- some inherent design fault or

- 1k higher RPM limit with RB26s????

If the standard sump is OK for my next step, bigger turbo and therefore higher RPM use, maybe up to 7600rpm then I won't worry about it.

By the way, are RB25s OK for valve bounce at higher boost & RPM?

Originally posted by Clint32

Im guessing by the time you buy a sump and go to the hassle of fitting it a oil cooler would be cheaper and easier to fit.  Cooler should only be about $300, and another $200 for fittings and the mount block.

The good oil coolers with the remote oild filter adapter sell for around $800 new!

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