Jump to content
SAU Community

Recommended Posts

OK, I had the idler bolt snap on my Rb25det Neo, which threw the cam belt on the free way at 110kph. As a result, both sets on valves are bent. yes all 24.

So engine is in bits, and valves are out, but here it is...... Where can I find replacement valves other than Nissan. The place where the head is cant source them, and well the ***** on ebay say they can get them, but that was over 2 weeks ago. They arn't the same as a normal rb25det, as mine is a NEO, they seem to be a different size to others.

Is this normal?

Inlet About 104mm head 30.4mm tip 6mm shaft dia 6mm all approx. as I don't have verner

exhaust about 98mm head 29mm tip 4mm shaft dia 6mm

Nissan want, inlet $35 ea exhaust $59 ea

With all the rb's out there, there must be someone who does them cheaper the nissan

Need help pls

Edited by Daffy
Link to comment
https://www.sau.com.au/forums/topic/447150-valves/
Share on other sites

Erics performance parts in the US sold me valve guides at a good price. They have a fair bit of stuff. Cant say I ever looked at valves but worth a try

As suggested though, getting a second hand head and robbing them out of there would be cheapest

Link to comment
https://www.sau.com.au/forums/topic/447150-valves/#findComment-7372020
Share on other sites

Yer I been looking for a 2nd head, but no one has 1, or wants to part with it cheap or wants the same price as the valves....

The normal rb25 heads are different to the NEO. The only thing that might fit on the both of them is the exhaust manifold. Rest of hardware would have to be changed.

I bought the ones from ebay over 2 weeks ago, and they are having "problems from there supplier" getting them. Now Im in a dispute trying to get my money back and got to look else ware. i got to wait for money to get back before I can buy new ones atm.

Is there a link to Amayama Wolverine so I can check that out?

Link to comment
https://www.sau.com.au/forums/topic/447150-valves/#findComment-7372177
Share on other sites

amayama.com or just call kudosmotorsport and ask Andrew for a price. I would try Andrew first as his communication is so much better but both should be able to come through with the goods in around 2 weeks.

Also here is a link to amayama http://nissan.epc-data.com/skyline/er34/3953-rb25det/engine/130/

Link to comment
https://www.sau.com.au/forums/topic/447150-valves/#findComment-7372310
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

    • Brooooo Please send ABS control unit schematic Please! R33 gts25t ABS (Its two plug ecu, black and white) wire colors possible? [email protected]
    • Don't even try to run it on the stock ECU if you're going to have the boost controller bring boost above ~10 psi. I've already told you that. If you use the Nistune ECU, you will need to CAREFULLY read the available documentation for Neo tuning, and read some threads on the Nistune forums, to discover the various things you have to do to prevent the ECU from going bananas when the boost is too high. The is a table associated with th boost sensor that must be modified to prevent it from shitting the bed. This is just one of the things that you will need to do to the tune in Nistune, because the Neo turbo ECU will be expecting to see a number of things (such as the TCS) that are not there, and you have to block the DTCs on those. It is totally not surprising to me that you are having the problems that you are, but the solutions to these problems have been known for >15 years. So just get it done.
    • Hi. Sry iam not a mechanic and iam not at the car atm so i dont know 100% but they told they measure those and even try to change those. AFM they have two. Coils are new a they have my old one too. Plugs too. ECU...we have 25 NEO stock and Nistune 25 NEO.   But i dont know if any one those could be the problem and why/if/what can cause this, Only thing they did not check is fuel...but that walbro 255 is new(like 1,5 years)... That fuel pressure gauge idk...but i let them know Any suggestions?   EDIT: how can they know if it is like you say he ECU pull power when it reaches a specific boost level that is too high? Tha car has boost controler
    • Can you clarify what you mean by boost cut, do you mean it misfires both when under load (driving) and when stationary and out of gear? Or does the ECU pull power when it reaches a specific boost level that is too high (boost control issue)? Does it occur at idle with no throttle? When you say "the ECU is OK", what ECU is it and why do you think it is OK? Have you used the NEO ECU, and if so do you have a MAP sensor attached? Same for the AFM, why do you think it is OK? Do you have any way to put a fuel pressure gauge on it (even just a mechanical one between the fuel filter and fuel rail)?
×
×
  • Create New...