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low747,

The OS 3ltr kit does use the stock tensioner and idler locations BUT they also use a custom belt.

We only have available what gates and a few other brands offer.

None of which meet the length requirement we need to use the stock setup.

gts25.

I'm going to be running a GT35R .82.

If I find it spools a little slow I will sacrifice a bit of top end and step down to the .62. Comparing turbine graphs, the .62 GT35R flows the same, if not slightly more than the .82 GT30R.

It should work fairly well. I'd imagine the biggest problem will be needing decent sized tyres to get it to the ground. :P

RB30DET pdf updated again. :rofl:

Cleaned up a couple of little bits and changed the section titles so they are easily identified when scrolling.

from what i have heard, be prepared for the .82 housing to be a bit of a light-switch power hit. from hearing people talk about it, the 1.06 is much better suited for the 30DET, but again i have no personal experience here.

I'm running a 0.82 GT30 and it is by no means a light switch, so a GT35 0.82 would be far from it. Although, I am only running 8psi atm. The Haltech has boost correction dependant on the gear selected, so i plan to use this to soften the power delivery in 1st gear once boost is wound up.

Alf, Its in the RB30 guide under the Short Motor section. Its not the oil galleries, the rb's have 2 oil restrictors in the block. One towards the front and one towards the rear.

However, I have been told by two people (RIPS & SK) to leave the 30's oil restrictors the way they are.

However... My engine builder and I decided it would be best to match the size of the restrictors to the size of the rb20's.

RB30 - 1.8mm vs RB20's 2.4mm.

Our decision was based on RB20 & 25's generally not having the same issue as the RB26 where oil is dumped in to the head and is unable to return quick enough.

His view was the rb26's run a higher flowing oil pump, solid followers and rev much harder.

The RB25/30 runs a rb25det oil pump, hydraulic followers and rev's lower.

I think the RB25 head and or the rb30 block must drain oil from the head better than my old RB20, I can literally pour a bottle in upside down and the rocker cover won't fill up.

The RB20's was fairly easy to fill up and overflow.

Maybe my engine builder cleaned up the oil return to flow a little easier just incase.

RIPS did say the smaller oil restrictors helps to control blow by and prevents the can filling up as quick. I am yet to find out. :D

  • 3 weeks later...

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