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e30h26

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Posts posted by e30h26

    R33 front subframe in R32

    in Suspension, braking and tyres

    Posted

    Given the info in this thread.... https://www.driftworks.com/forum/threads/the-definitive-nissan-crossmember-thread.243198/

     

    Specifically:

    The key differences are that when compared to the standard SR crossmember,
    -R33 crossmember mounts are 125mm further forward and 9mm lower as well as being roughly 15°
    -R32 crossmember mounts are 125mm further forward and 5.5mm higher and are approximately the same 53°

     

    Would the lower engine mount height not help with the engine position and weight distribution? 

     

    RB25 Neo limiter issues

    in Forced Induction Performance

    Posted

    5 hours ago, iruvyouskyrine said:

    If you are referring to spitting a shim etc then i have only ever heard of 2 neos doing it, and that was both second hand information on this forum. Simon-S14 said he has seen 2 drift cars do it but they both had fairly large drop in cams with a completely standard valve train. Personally i have been running a neo head for 2.5 years and give it absolute hell on the street and (drift) track and have never had an issue. I run a completely standard valvetrain and cams though.

    This is exactly what I wanted to know. Been hearing to many "oh yeah, a mate's brother's girlfriend's cousin once had the shim fly out and kill a baby" stories.

    5 hours ago, GTSBoy said:

    I think you would probably have to be belting the crap out of the lifters with cams with horribly aggressive ramp rates (probably coupled with inadequate springs) to have much likelihood of it happening.

    I'm planning on getting the Tomei Poncam Type B cams.

    "PONCam Set Type-B, Exhaust Duration: 260, Exhaust Lift: 9.15mm, Intake Duration: 260, Intake Lift: 9.15mm"

    I can't see those being too aggressive since Tomei list them as "drop in".

    RB25 Neo limiter issues

    in Forced Induction Performance

    Posted

    I haven't been able to find any definite answers on this one........are people aware of any issues with the Neo valvetrain design of shim-on-bucket for drag/drift purposes? In terms of 2 step/launch control or hitting the limiter. I know the JZ folks change to a solid lifter setup but I haven't been able to find any info on something similar for the Neo engine.

    Valve Spring Compressor With Head On Engine

    in General Maintenance

    Posted

    Thanks for the replies guys.

    Keeping the valve in place is no issue, TDC and an air compressor will work perfectly. You can also feed some rope into the bore to fill up the empty space if needed.

    Removing the Valve Springs is not so much the issue, but fitting the new stronger Springs will be. Especially when trying with the "Hammer" style i.e.

    49889.JPG

    Trying to push the stronger Springs down by had with that ^^^ will be a pain in the arse!

    Oem Valve Spring Measurements

    in Forced Induction Performance

    Posted

    I'm looking to confirm the coil bind and standard installed heights of OEM RB26 valve springs and OEM RB25DE valve springs.

    From what I have been able to measure myself; RB26 coil bind height is somewhere between 26-27mm, installed height I have as 35mm. But this doesn't make sense if the standard cams have an 8.58mm lift. I'd expect a safety clearance of 1.5mm anyway.

    RB25de coil bind height is about 24mm and installed height is 35mm again. The standard cams have a 7.8mm lift which gives plenty of safety margin.

    Can anyone help to confirm the measurements please?

    Drift Experience Days

    in Drift & Drag

    Posted

    Has anyone had any experience of any Drift Schools in or around Sydney? My brother is living out there and his birthday is coming up so I'd like to get him an experience day. I'd appreciate any of yer input so I'm not paying money for some rubbish day that he only drives for 2 minutes.

    Head Gasket Choice

    in Forced Induction Performance

    Posted

    The block and head have been checked and are flat from all angles that we tried. All the standard gasket material has been cleaned off so I'm happy it will seal. Im still trying to work out what CR i will end up with from either a 1.1mm or 1.5mm gasket though.

    Can anyone tell me what the piston dome volume for a standard RB26 piston is? Ive also got a piston crown to deck measurement of 3.7mm, is this common?

    Thanks for taking the time to respond lads.

    Head Gasket Choice

    in Forced Induction Performance

    Posted

    Hey folks,

    I've tried using an online compression ratio calculator to work out what headgasket thickness I should be going for but its not making any sense (probably my stupidity). The basic spec of the build is as follows:

    R32 Rb25DE with HKS2535/GTX3071 hybrid

    GTR crank, rods and pistons

    Nothing skimmed

    I'm aiming for a massively responsive 450 on pump fuel. Can anyone advise what gasket thickness to go for or at least what CR I'd get with this set up on a standard head gasket so I can work it out?

    Cheers.

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