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I'm rebuilding a VQ25det at the moment, it seems Nissan cant sell me any big end rod bearings... Wat?

I wonder if VQ35 ones will fit, anyone know a way to find out? I guess I will have to measure the stock rods and compare them somehow...

I didn't do anything....

But Scotty saved me by sourcing and fitting a new rad this afternoon, after mine decided it no longer wanted to keep the water on the inside... Bleeding the cooling system is a biatch...

Good to finally meet Aaron as well after all these years..

Thanks again mate!!! :cheers:

the bearing grades will be very minor differences in clearance...probably 1/10th of 20thou. If you are not buying nissan they will only have one grade. If you are buying nissan you could carefully measure everything....or just pick the middle grade and go with that

I didn't do anything....

But Scotty saved me by sourcing and fitting a new rad this afternoon, after mine decided it no longer wanted to keep the water on the inside... Bleeding the cooling system is a biatch...

Good to finally meet Aaron as well after all these years..

Thanks again mate!!! :cheers:

How did it go on the way home Nick? I should have sold you that spare coolant mod, it would have been quicker to fit that than bleed your engine...

How did it go on the way home Nick? I should have sold you that spare coolant mod, it would have been quicker to fit that than bleed your engine...

Ran like a dream thanks Scott. Temp gauge sat where it is supposed to the whole way home. Also drove across all possible bumps to give it all a good shake for bubble movements..

Swapped out the battery, and as expected the little window was showing bright red... New battery has restored normal starting..

I didn't do anything....

But Scotty saved me by sourcing and fitting a new rad this afternoon, after mine decided it no longer wanted to keep the water on the inside... Bleeding the cooling system is a biatch...

Good to finally meet Aaron as well after all these years..

Thanks again mate!!! :cheers:

Ha good to finally meet you too mate! Glad Scott got it all sorted!

Just fitted the HKS sensors for the F-con. Nissan was nice enough to leave me a decent spot to drill and tap the IAT sensor into the pipe the BOV mounts to, and two holes blanked off that I can mount the MAP sensor to. Just need to plumb the MAP sensor in now, thinking directly to the plenum rather than try and tap another thing in where the factory sensors are.

Also dropped the oil, replaced with fresh 300V and a Greddy filter. Guess I've got one more fill with 300V, 1L left over :/

Best measure of intake pressure is in the end of the plenum. Same place Nissan put the barb for the OEM sensor.

Right I'm with you now, the tiny hose on the end. Although there's also a factory sensor in the BOV pipe too.

Went on a little cruise with the v35/36 club of WA.. theyve adopted m35's into the club as theres not many in the scene. Met my first m35 other than mine today as NickM91 came along for the cruise .. had a great time and shared lots of info.. :cheers:

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    • Yeah, that's fine**. But the numbers you came up with are just wrong. Try it for yourself. Put in any voltage from the possible range and see what result you get. You get nonsense. ** When I say "fine", I mean, it's still shit. The very simple linear formula (slope & intercept) is shit for a sensor with a non-linear response. This is the curve, from your data above. Look at the CURVE! It's only really linear between about 30 and 90 °C. And if you used only that range to define a curve, it would be great. But you would go more and more wrong as you went to higher temps. And that is why the slope & intercept found when you use 50 and 150 as the end points is so bad halfway between those points. The real curve is a long way below the linear curve which just zips straight between the end points, like this one. You could probably use the same slope and a lower intercept, to move that straight line down, and spread the error out. But you would 5-10°C off in a lot of places. You'd need to say what temperature range you really wanted to be most right - say, 100 to 130, and plop the line closest to teh real curve in that region, which would make it quite wrong down at the lower temperatures. Let me just say that HPTuners are not being realistic in only allowing for a simple linear curve. 
    • I feel I should re-iterate. The above picture is the only option available in the software and the blurb from HP Tuners I quoted earlier is the only way to add data to it and that's the description they offer as to how to figure it out. The only fields available is the blank box after (Input/ ) and the box right before = Output. Those are the only numbers that can be entered.
    • No, your formula is arse backwards. Mine is totally different to yours, and is the one I said was bang on at 50 and 150. I'll put your data into Excel (actually it already is, chart it and fit a linear fit to it, aiming to make it evenly wrong across the whole span. But not now. Other things to do first.
    • God damnit. The only option I actually have in the software is the one that is screenshotted. I am glad that I at least got it right... for those two points. Would it actually change anything if I chose/used 80C and 120C as the two points instead? My brain wants to imagine the formula put into HPtuners would be the same equation, otherwise none of this makes sense to me, unless: 1) The formula you put into VCM Scanner/HPTuners is always linear 2) The two points/input pairs are only arbitrary to choose (as the documentation implies) IF the actual scaling of the sensor is linear. then 3) If the scaling is not linear, the two points you choose matter a great deal, because the formula will draw a line between those two points only.
    • Nah, that is hella wrong. If I do a simple linear between 150°C (0.407v) and 50°C (2.98v) I get the formula Temperature = -38.8651*voltage + 165.8181 It is perfectly correct at 50 and 150, but it is as much as 20° out in the region of 110°C, because the actual data is significantly non-linear there. It is no more than 4° out down at the lowest temperatures, but is is seriously shit almost everywhere. I cannot believe that the instruction is to do a 2 point linear fit. I would say the method I used previously would have to be better.
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