MBS206

That's what I thought may occur, as the oil is more spread thin, rather then being pumped around with no air gaps with the coolant...

See, I've always wondered about the whole water bringing the oil up to temp. If you take a litre of oil, and a litre of water, and subject them to the same amount of heat energy, the oil ends up at a higher temperature. But then again, I'm assuming the water is subjected to more heat energy inside the block. For those of you with temp gauges, what is coming up to temp first, the oil or water temp? IMO though Duncan, you are 100% right that for motorsport, I'd be ditching it, and running a relocator + oil cooler.

Those clean ones though are now demanding the same if not more than what I paid for mine back in 2006. Around 2011/2012 was the time to grab cheap R33 GtST where a nice one would come up for $5K

Would love to go to TomorrowLand. Has always been a want but never mad either so far

No such thing as cheap skylines any more

I heard its living life on a farm, happily prancing around the fields, and eyeing off racing the neighbours paddock basher...

I say go for it, do the boxes fail spectacularly? If so, can you out a light and a dash cam under the car? Wanna see that shit on vid. As mentioned, Mark may be old, be he ain't mature

Hey @mlr Wasn't there something mentioned earlier about these things having a gearbox issue with more power?

I can see one huge thing that you have that I don't... Patience... Ha ha ha I'm a hit it with the flappy disk, smash a quick touch of the scotch brute disc over it (if I have one) and send it if I had a polisher on the bench grinder then I *might* consider polishing otherwise too much effort ha ha

That's awesome! Makes perfect sense, I didn't think you'd made it that way as I couldn't see a single weld mark on it! Great finish on the product, I was hoping you had a magical source to buy them from as my welding on sheet steel is no where near that good! I'm assuming it was all TIG welded? I only have my MIG and it's currently setup as flux core, I really need to get a bottle for it and change to a 0.6mm wire for doing sheet

How did you get it all so nicely shaped and rolled? Are you a sheet metal worker?

Can I ask, where did you buy the raw rail from? Also the alu you have that is shaped for the intake, did you start from flat alu and shaped it, or did you buy that from somewhere?

I knew R1 was gone to a new home in da gong, but wasn't aware of new dirt bike already

No bike!

It's just in a plastic housing or in a metal one?

Where are you measuring IAT at and what is the sensor mounted in?

Read the thread by Femno about tubular equal length manifolds, he built a beautiful set, barely any advantage over standard manifolds. Note they were not this, but consensus appears to be you can do it cheaper with stockies

Yeah it runs a HB3, and a HB4, I just don't remember which one is high/low beam. I'm assuming from the above HB3 is likely my high beam?

I think we may be on the same wave length. When you do tuned length for an NA engine, the primaries and secondary lengths are huge in comparison to what we do for a turbo manifold, so it's possible we're even putting high pressure pulses rebounded at an exhaust valve when an opening event occurs which is bad! I'd love to do some testing of "equal tuned length" vs some smooth flowing but unequal length. Alas I'd want to do it with an EGT sensor per cylinder, and back to back on a dyno and I don't have money to build it, yet alone dyno time costs!

I'm interested to know, on a turbo car, once spooled, how much advantage is an equal length runner since we have such a huge restriction at the turbo... I feel the equal/tuned length is best for spool up and NA engines, but how far does it affect a turbo once on full boost?

With regard to that equation, yes, but that equation doesn't work in this scenario is the issue. The exhaust manifold with a turbo in it is quite a complicated area. To use your above formula you could look at the exhaust as a whole, but it still doesn't take everything into account, and as such still doesn't work. The biggest thing with a lot of those formulas is that you need to simplify things down to a constant value, for something that is constantly changing. When they teach this stuff at Uni, it's "this is the rules!!!... By the way, you can only use the rules in the minutest amount of calculations because of... "

That last part talking about water in the pipe, has a pressure differential that is quite dramatic to calc it's flow. Exhaust gas flow doesn't At that point in the system.

Yes, but pressure differential can be regarded as 0, there flow flow rate regarding pressure change = 0 change in the runner.

That's for calculating a pressure differential. Do you know what the pressure difference is From exhaust valve to turbo? 2/5ths of nothing. Which means that equation won't apply for altering the flow rate.

I haven't found in any of my engineering texts how halving the length doubles the flow. It doesn't change flow rate at all funnily except for drag on the walls, and temperature drop and some other minor parts. Flow rate is in metres/second, and then you multiply by the cross sectional area, and you have the volumetric flow rate. Note how NONE of it looks at the LENGTH?