Mik

Pulling the head off with the engine in the car must have been fun...

Of course with the 2mm smaller base circle, you need an extra 1mm lifter height, but unless I'm totally missing something, the head clearance should increase as well. The only thing is, the clearance will be 0.1mm less than it is with PONCAMS and I'm wondering if there will be enough.

Everyone knows that Tomei PONCAMS drop straight into an RB26 without the need for any clearancing. These run a standrard base circle (32mm) and 9.15mm lift. This means that the lobe height from the centre will be 25.15mm (16mm+9.15mm). Now Tomei PROCAMS with 10.25mm lift run a base circle of 30mm. This means that the lobe height will be 25.25mm. Does this mean that the head will not need to be clearanced?

I can assure you an Rb20 would make a boatload more power with a GTRS turbine than it would with a 2530.

That is very odd. I was told CP don't make rings. The guys at CP in the states told me that they supply a Jap made ring. The aussie dist supplies either total seal or hastings (US made rings) Another weird thing...I always thought chromoly (ie chrome molybdeum (spelling??)) WAS tool steel!! But in any case, if I were to use CP rings, I would get them custom made to accept OEM rings and OEM tru arc locks.

Someone must know??

Hey Ben, I think you'll find the American 87mm pistons will be a different piston to Nicks ones. The Aussie distributor custom orders the 87mm pistons with thinner rings.

Does anyone know if a Hitatchi starter motor of a VL commodore (RB30) will fit on a GTR? Are RB20, RB25 and RB26 staters interchageable?

Williams, that's pretty cheap if they are complete with rings. One thing you need to be careful of with CP pistons, is that you get different rings depending on where you buy the pistons from. CP don't make their own rings. I know if you order from CP direct, you get a japanese made ring. If you buy a set here, I'm pretty sure you get a US made hastings ring. Also, the 87mm pistons you buy here are not an off the shelf CP piston, they are a custom piston and use a different ring width to the 86.5mm pistons (and the US 87mm pistons) By the way Tomei pistons run 0.002" to 0.00225" clearance.

You could always get custom pistons (2mm smaller pin height) and use the GT crank with your Pauter rods. The GT pistons are not forged. Incidently, the crank that tomei supply with their RB28kit looks alot like the NISMO GT (Z tune) crank (I reckon it is the same one). The Tomei crank uses shorter rods, 119.5mm and standard pin height on the pistons. But the Tomei rods look much nicer(and lighter) than the NISMO ones. The longer rods would be better for RPM, but apparently the Tomei kit is still good for 9000RPM +.

Pete...that is std Rod length. You need to use special pistons which run a smaller (by 2mm) piston pin height

Why would you need to do that? The HKS step 1 cams run a std base circle and if anything, the old cams would be a little worn, so the valve clearances will actually get smaller with the new cams.

Paul...do the OEM plugs fit the 800cc injectors? If I need to change the plugs, then I think I'll stick with 700s.

I need to know if SARD 800cc injectors are a direct for a BCNR33 GTR. I.E: * Do they fit the rail without modification? * Do they plug into the loom? Thanks in advance

What sort of turbos does it run?

Fair enough, the only reason I asked is that I have seen 86mm RB26 pistons that have '05' on the top (as well as the 05U). The '05' was some sort of casting ID mark. The 86.5mm nissan pistons have '50' at the fron where the piston grade ID normally is.

87mm is fine..but are you sure the nores are already 86.5mm? Did you measure them?

Will Sard 800cc injectors fit into the standard GTR rail?

Comp: (11.5, 11.5, 11.6, 11.6, 11.5, 11.5) bar Leakdown: less than 5% across the board Tell your mate to make me an offer Know anyone that's got a blown one for sale? Don't care what's wrong with it, but don't want one that's had a turnine or two go through it though.

Nope...but I have plans for it. Not sure whether to build a strong motor out of my engine or another one. do you want to buy my old engine off me??

Does anyone have a picture of a bnr32 crank? How wide exactly is the crank drive?

Hmmm...I think the issue may be that the 044 draws much more current than the OEM pump...and this is compounded when you run two pumps off the oem wiring. But 1.5 volts drop seems huge for such a short cable. Maybe the ralay on that car was on the way out? I measured the voltage at idle...but this shouldn't make a difference, becasue if anything, the pump will draw more current at idle, because it is under slightly more load. On another note, I considered using an 044 and a surge tank setup. But my question is, will my oem pump keep up with the 044 (in order to keep the surge tank full?) I know it will not face any presssure, but will that increase the flow by that much? Wih that setup, I would definately run thicker cabling, hot wires and fuel in a boot aren't a good mix!!

No idea what voltage the pump is rated at, but I'm guessing it would be at more than 12.5 volts. I was considering running a seperate relay some time ago, but the thing is, on the BCNR33, with the battery in the back, there is only about 1/2m of cable between the battery and the fuel pump anyway. When I saw this, I measured the voltage drop and it was less than 0.1 volts...Hardly worth the effort. I suspect that doing this will be much more worthwhile on a BNR32, since the battery (and fuel pump relay at a guess) is at the front.

A better question may be..."how much do you want to pay for them?"

Thanks Pete...so the plugs are the same too? If yours only run at 80%, they should be big enough for me.