Jump to content
SAU Community

Recommended Posts

Hey All,

I'm in the process of doing a solid lifter conversion on a series 2 rb25det head from an r33. I've heard some contrasting things online but theres not many resourses on the topic of the solid lifter conversion. A specfic question has led me to make this thread, but would love to hear other peoples experiences with solid lifter converting a non-neo 25 before I go guns blazing...

I want to run higher lift cams but Ive read the Nvcs oil pipe runs under the springs on the intake side, leading to less intake valve life. I've seen valve seats for the exhaust side to even up the installed heights of the springs, but i dont know this would help with the lift issue. I have a set of the tomei type B valve springs for the solid lifter conversion which are sold with intake retainers which i think offsets the installed height on intake side? - not sure if exhaust side springs seats are still necessary with this setup but I assume it does the same job as the exhaust seats but allows for higher intake valve lift? 

Anyway I have a set of these spring without retainers, and cant find any info on what retainers will work anywhere. Tomei doesnt sell the retainers alone as far as I know and i really dont want to get a full set just for retainers. I was wondering whether there are any other options for retainers which will work? Will I need exhaust spring seats to even the installed heights with these springs?

Any help is appreciated.

Cheers,

 

Link to comment
https://www.sau.com.au/forums/topic/485692-rb25det-solid-lifter-conversion/
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • 500-600hp into a RB is already 'sinking endless amounts of money' into an engine. Especially a 30 year old engine. Unfortunately this is the RB Game. Considering stock power (or at least stock components) will do ~360whp on 98 by simply turning up the boost on the stock gear on a RB26, that would be where I'd say the cutoff point for "sinking endless amounts of money into the engine" Cause to even do this reliably you'd probably need to replace all the bits anyway cause they're old, starting your sinking journey anyway. I reckon the least painful way is rebuilding the engine to make 50hp over stock lol. The 'plan your ownership around a rebuild' was a common saying 15 years ago.
    • Well, the NA RB25 is nothing special in terms of the amount of power it makes stock, nor with any easy mods like extractors & exhaust, opening up the intake tract, etc, etc. And just like any small capacity NA engine, getting lots of power out of them takes a fair bit of money and, depending on how far you go with big cams and high compression and so on, quite grumpy to drive. So, boost is the answer. Many many many of them have had a turbo added. This is easy enough. Same as for any engine. Need the things you need to bolt on the turbo of choice, fuel system and management upgrades, clutch, stronger gearbox ( you do not want to run a boost RB25 through the NA box), diff, brakes, etc, etc, same as you would for most other NA+T things. Some much smaller number have had a supercharger added instead. These are good and cool, but have nowhere near the potential of the turbo route. All the same required upgrades apply. So, potential? Anywhere from not much to quite a lot, depending on how much effort and expense you want to go to. Is there value in the effort and expense? Objectively, no, there is not. If you're gaining enjoyment and don't mind blowing a lot of money on the project, then that's where the value is. Parts? Nissan dealers for some. Many many on-line vendors who do Japanese manufacturer spares (buy buying them from disposals at dealers around the world, direct from manufacturers, increasingly from Chinese knockoffs, etc) and warehousing them in Dubai or similar places. Amayama, Partsouk, etc etc. There are quite a few. Some local to Australia, some local to Europe, some local to the US. You can upgrade literally everything. For an NA, unless you're going to boost it, there's little point going past a nice exhaust, as I said above. After that (well, actually probably even before that) you should concentrate on making it handle the best it can, good brake components, light wheels and tyres, and just make it something to enjoy throwing through the curves. You'll never, ever win any drag races, so it needs to be taken as a nice point-to-point car. Throw in some Recaros or Brides, nice Momo wheel and gearknob, so it's pleasant to be in (because god knows, the inside of an R33 is not a pretty place!!) and away you go.
    • How many $$$ do you have to slip cams to logbook a car that’s not the orginal to the 1990 standard lol
    • Thanks for the update I truly appreciate it. I was trying to figure out the sensors. 
×
×
  • Create New...