Jump to content
SAU Community

Recommended Posts

The HKS cams I had did not have HKS stamped on them and now my TOMEI cams also don;t have any branding stamped on them.

Were they RB25 cams or RB20 cams? RB25 cams have HKS stamped on them, 100%. Tomei don't have anything so don't compare them.

Concaves on the cams mean standard RB25 cams. Another way to tell is that HKS cams don't have a casting mark down the side of the entire cam, stock ones do.

Here's a stock one, as you can see, it has the concave and the casting mark.

post-35676-1238428371_thumb.jpg

Your paint picture is exactly what stock ones look like. Call him tomorrow and tell him he sent you stock cams, see what he says.

Edited by PM-R33
  • Replies 44
  • Created
  • Last Reply

Top Posters In This Topic

HKS cams that I have seen are ground on their own billets which have HKS cast into them. No HKS RB cams that I have seen have the head bolt scallops in them like a standard cam or a Tomei cam, they are full round between the lobes.

YEs the HKS 264 cams I had were for a rb25 but I was using them in a rb20 before one of them snapped did not have any markings and did have the concave bits for the head studs... they were quite a few years old since I first bought them but so maybe they have changed their design over time?

Ive spoken to slide and he has told me that the early HKS cams were unstamped and did in fact have the concaved parts for the headbolts. Here are some pics, does anyone know how to measure the lift properly?? And what standard lift should be in comparison to these? I have just read that both standard rb25det cams should be 240 degress with 7.8 lift on them... sound normal?? I might run down to the head machining place and ask them to measure mine..

post-38045-1238470472_thumb.jpg

have a look at the Rb30 guide pdf file

in there they have the chart from Tomei that lists cam specs for the standard cams in RB engines

according to that:

R33 RB25DET cams should have 240 degrees duration and 7.8mm lift

...so would appear to be standard lift

Edited by Kranker

To all those that were following my story haha..... I ended up getting his contact details off ebay, and calling his home phone as I hadnt recieved any emails back at all. After explaining the situation he agreed to transfer the money back to me. The money has shown up today, so now I'll send his precious cams back to him. Problem sorted. Thanks for everyones input!

Jamie

To all those that were following my story haha..... I ended up getting his contact details off ebay, and calling his home phone as I hadnt recieved any emails back at all. After explaining the situation he agreed to transfer the money back to me. The money has shown up today, so now I'll send his precious cams back to him. Problem sorted. Thanks for everyones input!

Jamie

Did he make a mistake, or was he trying to rip you off?

Did he make a mistake, or was he trying to rip you off?

He told me he bought them second hand under the impression they were the early model, non stamped HKS cams. But never got them fitted to his car so didnt know. Honest bloke or decent liar, who would know ???

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

    • Here is the mess that I made. That filler there was successful in filling dents in that area. But in the middle area. I can feel dents. And I've gone ocer it multiple times with filler. And the filler is no longer there because i accidently sanded it away. I've chased my tail on this job but this is something else lol. So I'm gonna attempt filler one more time and if it doesn't work I'll just high fill primer the door and see where the issues are because guidecoat is of no use atm.
    • Ok, so I think I sort of figured out where I went wrong. So I definitely overthinked it, and I over sanded, which is probably a large part of the problem. to fix it, I ended up tapping some spots that were likely to be high, made them low, filled them in, and I tackled small sections at a time, and it feels a lot better.    I think what confused me as well is you have the bare metal, and some spots darker and some are lighter, and when I run my finger across it, it' would feel like it's a low spot, but I think it's just a transition in different texture from metal to body filler.    When your finger's sliding on the body filler, and crosses over to the bare metal, going back and forth, it feels like it's a low spot. So I kept putting filler there and sanding, but I think it was just a transition in texture, nothing to do with the low or high spot. But the panel's feels a lot better, and I'm just going to end up priming it, and then I'll block it after with guide coat.   Ended up wasting just about all of my filler on this damn door lol  
    • -10 is plenty for running to an oil cooler. When you look at oil feeds, like power steering feeds, they're much smaller, and then just a larger hose size to move volume in less pressure. No need for -12. Even on the race cars, like Duncans, and endurance cars, most of them are all running -10 and everything works perfectly fine, temps are under control, and there's no restrictions.
    • Update: O2 sensor in my downpipe turned out to be faulty when I plugged in to the Haltech software. Was getting a "open circuit" warning. Tons of carbon buildup on it, probably from when I was running rich for a while before getting it corrected. Replaced with new unit and test drove again. The shuffle still happens, albeit far less now. I am not able to replicate it as reliably and it no longer happens at the same RPM levels as before. The only time I was able to hear it was in 5th going uphill and another time in 5th where there was no noticeable incline but applying more throttle first sped it up and then cleared it. Then once in 4th when I slightly lifted the throttle going over a bump but cleared right after. My understanding is that with the O2 sensor out, the ECU relies entirely on the MAP tune and isn't able to make its small adjustments based on the sensors reading. All in all, a big improvement, though not the silver bullet. Will try validating the actuators are set up correctly, and potentially setting up shop time to tune the boost controller on closed loop rather than the open loop it is set to now. Think if it's set up on closed loop to take the O2 reading, that should deal with these last bits. Will try to update again as I go. 
    • More so GReddy oil relocation kits, sandwich plates, etc. all use 10AN fittings. And same, I've only used 10AN and my car sees track work (circuit, doing laps, not 10 sec squirt business).
×
×
  • Create New...