RB30 Facts, Figures and Helpful Hints

[Throbbinhood]

I finally checked the economy since I had the headers fitted, the head plained, the carby heater grid removed, and disabled the Pre-Heat Flap diaphragm (warmer months only).

I got 13.4 lt/100km highway driving and 15.11 for light duty four wheeling. As a bonus for the extra ponies gained, it should only take 23500 km of highway driving to recoup the cost of the headers.

Hey mate, great figures. Can I ask what accessories you've got (tyres/barwork/auto-man/roof rack/winch/draws)? I get 15 on the highway which I'm happy with (on 35s, winch+front bar, draws with 150kg tools, 2 passengers and heaps of camping gear. no roofrack. manual).

[mudnut]

2' lift and a winch mounted in a 10mm steel cradle behind the nissan alloy bar. I have also taken most of the recovery gear from out of the back, which helps.

[mudnut]

This was a pleasant surprise for me and also the mechanic. He expected a moderate power gain from installing headers but not a 10% increase. The torque curve has flattened out significantly as well. So now my rb30 has a better rev range than a tb42, nearly the same economy of a td42 and is cheaper to repair and service as well.

[mudnut]

Stage one of waterproofing the engine. I have made an Oil dip stick clip to hold the stick in place when submerged.

I cut and bent into shape a piece of spring steel from a window wiper to serve as the clip and anchored it using two small hose clamps.

Although a slightly wider piece of spring steel would hold the dip stick in place better, it now takes three to four times the amount of force to pull the stick out so I am happy with that.

[Throbbinhood]

That's brilliant. I've never thought of the stick pushing out, though mine doesn't take much effort to remove at all. The seal is good, and I looked at a new one from Nissan and by looks my seal hadn't deteriorated. I've often wandered if there was a way to create a tighter seal, but was told that the dipstick area was pressurized anyway, as long as the motor kept running it was all good. Can anyone confirm this?

[mudnut]

The PCV valve should keep the sump pressure at a minimum, but as the engine wears air blows by the rings and maybe the exhaust valve guides so the pressure rises, especially when decelerating.

[Throbbinhood]

Interesting. I guess I better start bending a window wiper!

[Patrol'n]

This was a pleasant surprise for me and also the mechanic. He expected a moderate power gain from installing headers but not a 10% increase. The torque curve has flattened out significantly as well. So now my rb30 has a better rev range than a tb42, nearly the same economy of a td42 and is cheaper to repair and service as well.

Do you have a free flow exhaust fitted as well?

My RB30 has headers, but the exhaust note is super quiet, so I wonder if upgrading the exhaust would get any more power out of my truck or not.

[mudnut]

Do you have a free flow exhaust fitted as well?

,

No, the pong box is in pretty good nick, so it will have to wait. I did ask the dyno bloke if it was worth fitting one, and he reckons it wouldn't gain any worthwhile ponies extra for the cost.
The engine is quite a lot louder with the headers anyway and I don't want the Old Trol to stand out too much, either.

[dom14]

Really good info on the oil pressure sender, Dom. Keep it up, people. I reckon we should split this thread up into sub sections to make it easier to read.

Cool, thanx. I've also noticed few fresh questions posted on this thread by few blokes instead of starting a fresh thread for that.
Yeah, it's definitely a good time to organize this thread into sub sections. I'm not sure whether this forum engine can facilitate that. If it can, that will be great. If there's a way to embed hyperlinks at the start of this thread pointing at sub sections(different relevant post numbers in this thread) would be pretty helpful. If that's not possible, a new stick thread with "RB30 facts and figures extended" or something similar would be good.

Also requesting guys not to post new questions in this thread, but rather post them on a separate thread and then post the valuable information from those threads into this thread(as I've been doing) would be really helpful to keep this thread clean and easy to locate any required information.

Cheers
Dom