Jump to content
SAU Community

Help Needed

MissR34

By MissR34,
in South Australia

 Share

Recommended Posts

mark99 Contributor

mark99

Posted
Posted
when i asked in the n/a part i was asked "why i wanted to make my car into a racecar" because i want bigger cams

Dont listen to them. Cams are a personal thing some people love big cams, some people hate 'em. If you like the sound of an engine with bigger cams in it, then for an n/a engine with the mods your car alrady has on it, cams and tuning to suit are a logical step.

mark99 Contributor

mark99

Posted
Posted
^^ agreed

its just proving a little hard too find cams to go in the r34 non turbo at the moment all i can seem to find is the ones for turbo.

Im not 100% sure on this but you might find your best bet is to go with r33 rb25det cams, and change the cam angle sensor drive in the front of the cam to suit your r34 cam angle sensor. Im pretty sure r34 turbo are solid cam, where as non turbo is hydraulic, so for simplicity if you stay with hydraulic cams from other rb25 engines, other than the cam angle sensor i think they should fit straight in (any one feel free to tell me if i've over looked something else). Im not sure what the assembled height of the valve spring on the non turbo neo is like compared to the turbo rb25, i wouldn't think it could possibly be any worse, so valve springs should to be able to be sorted one way or another.

If you add adjustable cam wheels, then the fact that they are "turbo cams" really should not matter, as long as the lift and duration are relatively larger than standard. Whoever tunes the car will be able to adjust the lobe seperation to suit n/a application with the cam wheels. For all intents and purposes, lobe seperation is the biggest difference between n/a cams and turbo cams, so with adjustable cam wheels, this is not such an issue.

Hope that helps, but like i said dont quote me on this. Im going on memory for all of it, and i may have overlooked something. But it would be a good place to start

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • joshuaho96
      Ethanol Content Sensor - Always at 11%?

      By joshuaho96 · Posted

      In the US almost everything is E10. It can't exceed 10% by much or fuel systems have trouble adapting. At the same time because MTBE, MMT, and TEL are all banned they need as much ethanol in it as possible to boost octane.
    • Kinkstaah
      NC MX5

      By Kinkstaah · Posted

      I was mostly jesting. In my experience (and probably only my experience) the R34 GTT physical airbox space is actually too small to flow the amount of power it wanted. By sealing the box, I made it so it could only be fed by the ducts themselves. So you can seal it up and get nice cold air which IS good, but at a certain crossover point: More Hot Air > Less Cold Air I don't think you're at this point. In my case merely ducting the hot air intake with a very focused set of ducts counteracts the fact it's in a V8 engine bay. More cold air obviously best. The solution looks great.
    • The Bogan
      NC MX5

      By The Bogan · Posted

      Nah, the OEM CAI pipe is still installed behind the bumper, it is about 5" x 3" oval at the engine side, tapering down to a 3" pipe behind the bumper where it gets all the ambient air it needs Engine side of radiator support OEM intake pipe "oval hole" that is right in front of the filter My OEM NC1 CAI pipe: From NC2 onwards, below pic, they come slightly smaller at 2.75" diameter with corrugations and a resonance chamber to reduce intake noise, lucky for me my NC1 has the bigger noisy one, LOL   Basically, the "sealed" airbox will just get ambient air from a 3" pre filter intake tube that is the same size, 3" as the rest of the intake pipe post filter, and if a 3" intake isn't big enough to flow enough air for 150 killerwasps then there are other issues The whole intake is basically the same length as OEM, but it is now about 30% bigger from the airbox back through to the new intake plenum than OEM, and the intake plenum is port matched to the head And the intake is now about 30% bigger than my 2.5" exhaust, so the suck, squeeze, bang and blow black magic should be fine, well, to my uneducated understanding of fluid dynamics anyway Talking the the guys at MX5 Mania, it may even make a few more killerwasps as the intake isn't sucking hot air, especially off idle or when in slow traffic when it would be sucking hot air  As for the difference in IAT, I haven't logged IAT yet, as I don't currently have a OBD2 reader, but I will have a play with my thermal lazer thingie next time I take the car out to sèe how hot stuff gets under the bonnet near the intake filter prior to installing the air box, my "assumption is it has to be much better after the air box is in and sealed up compared to what it is now The aftermarket "performance" CAI elephant in the room: Aftermarket CAI intakes typically have the air filter tucked up behind the bumper, with a 2.5" intake tube (the OEM intake pipe is actually about 30% bigger than the fancy pants "aftermarket" version.....WTF), and you need to remove the bumper to service the filter, which is a PITA Like dis:    
    • soviet_merlin
      Howdy Y'all

      By soviet_merlin · Posted

      Nice one, I'd argue that the white S1 RS260 is certainly the best looking of the Stageas. And yes, fully agree on the forum situation. It's a bit of a shame, but at least SAU is a good place to be. I found the facebook groups to give me FOMO because people were trying to one-up each other and show off in some way. Feels much more natural here. There are people with seriously nice builds, but I can appreciate it rather than it making me question my life choices. Might be that people are more open with sharing how much work/money/suffering it takes to actually get there. 
    • aznriptide859
      Howdy Y'all

      By aznriptide859 · Posted

      Evening, wanted to pop in and finally register to say hi to everyone here on SAU!   It's been a while since I've been active on a forum, but back in the day I used to be relatively active on ClubLexus and other hobby-related forums. I'm glad to see SAU is still around, since with the advent of Facebook and Discord it seems forums aren't what they once were. As a recent new owner of an S1 260RS Stagea, I've found so many older guides and helpful tips from SAU that I figured I needed to join and say a grave thank you. My recent acquisition has only become legal in the US for the past year, and knowing that similar car enthusiasts from across the pond have already figured out the kinks and tricks to get these 25+ year old cars running well. I look forward to diving into more of the SAU forums as well as hopefully contribute some info myself for future posterity.   As a pic tax, here is one of the few good photos I have of my Stagea. I hope to get way more in the future!    
×
×
  • Create New...