Idon28

Had a read of that, these pistons are what I had in mind: http://www.rawbrokerage.com/cp-sc7312-forged-pistons-rb26dett-86-0mm-9-0-1/

Probably a dumb question, a new N1 block comes with an 86mm bore, honed and ready for pistons. will a standard size (86) aftermarket piston fit in no issues without any addition machinework? or are 86mm size aftermarkets machined differently then oem?

Will an OS Giken billet center plate for the RB26 4WD box be the same as the center plate in an ECR33 RB25 gearbox?

As title, anyone know what torque you should use for a 30/26 thats held with RB25 hardware? Should I just use the ARP RB25 torque specs? or something else

The tires I want to run only come in 15". and no worry for the 4WD, its long gone.

Yep.

Will 15" rims clear the rear brakes on an R32 GTR? (no need to worry about the front, only the rear).

I figured. Oddly enough I do own both a GTR and a GTST, when both where fairly stock (no handling mods, just very light engine mods for both). Sure my GTR kicked ass on the strip, but I got faster times in my GTST on the track, and in autoX, the GTR was just a boat. Yeah, I'll keep the attesa and see how it goes. I realize that ATTESA factors for alot more then wheel spin, but It was one of my main concern when pushing 3X the stock power level to the hubs. I'll just play with my suspension to try to get rid of the horrid understeer my GTR was having, probably purchase an ETS controller too.

Been thinking weather or not to ditch my attesa system in the R32 (not a half-ass RWD switch, but full proper deletion). But I intend for my car to be used for time attack, and wonder just how much it actually aids in traction. This is something I'm worried about since I went with an RB30, and it makes a hell of a lot more torque then my 26 lump. The car does have 275/40r17 hoosier A6 tires on it, but just how much is that a limiting factor on the rear wheels before attesa is worth its wieght? Ive driven this car at the track before, but that was with a fairly stock setup, now the setup is a ~650hp RB30 engine, will the attesa make or break this car? or is it something that can be done away with? I wonder whats the forums input who have tracked both GTR (or even high power GTS) on the track, R32 model. Is it worth keeping? Cheers.

If its only the breathers that will pose a problem then its perfect, I run a dry sump, so these breathers are replaced with vacuum relief valves anyways. If other then that its a direct fit, then that answers my questions, thank you for your time.

Quick question, as I have an RB26 head without covers (or any laying around for that matter) and I need to buy some. I would like to run RB20 valve covers, and the front timing cover. Does the RB20 timing cover fit on the RB26's timing backing plate? (the black thing that sits on the front of the head) or do I need to run the RB20's backing plate? Will it screw up the timing? people run 26 valve covers on thier 20s all the time, so I don't think its a problem to put 20 covers on my 26. The only thing that is unclear to me is the front timing cover, weather it fits onto the 26's backing plate or will misalign.

Building my car to full out drag setup, the liberty airshifted sequential seems to be a reasonably priced setup that will perform well, but there is one thing holding me back from purchasing such a setup, and thats that this is a one way transmission. Im not overly familiar with this style of transmission, or the inner workings of sequentials, but if street driving where needed, can this airshift handle low RPM shifts? If I needed to downshift, (say cruising in 5th, wanted to get to 4th or 3rd). would it be possible to use the transmission as it was designed, dropping into neutral, clutch in and going up to the desired gear?) 5th to N, clutch, 1 2 3 4 clutch in? This car will mostly be driving on the drag strip, and not much intention on street driving, but I still need to get to the track, I wonder if anyone has any input if this transmission can handle driving on the street and if even lower gears can be maintained or selected somehow. Thanks for your input.

Is there any advantage or disadvantage from a mechanical standpoint from mounting at an angle?

Question about the ballace tube on the RB26. If we ignore the water ports (bleed points), my understanding that the tube is designed to ballance ports when the ITBs are used. That bieng said, can the tube be done away with and the air holes plugged if using a single throttle body and an aftermarket plenum? my understanding is that airflow is already ballanced through the plenum if a single throttle is used, so the tube is redundant. Anyone have any input on this theory? with a single throttle, can the tube simply be removed? Real estate is a luxoury and the more I can rid off the better. Thank you for your knowledge.

Also, if I would have a RB25DE block from a 4WD GTS, would the RB26 oil an and transmission bolt up to it? Since I already have all the RB26 stuff, it might be cheaper just to bolt in a RB25DE long block if its compatable. again, rebuilding the RB26 is out of the question.