Hks Camshafts

[PM-R33]

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.

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 March 30, 2009 by PM-R33

[proengines]

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.

[superjet760]

I have brought 2 sets of hks cams one set 264 and the other 280 and they both had hks on them

[murrayis]

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?

[Angus Smart]

What lift are these cams you bought? surely you can measure them to compare if they are stock or not..

[Fastrotor]

Who has the std cam specs ???

[NZM.031]

hks sr20 have hks on them.

[Jamie88]

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..

[Angus Smart]

yeah would be your best bet to get someone who knows what they are doing to spec the cams up..

[Jamie88]

Yeah i just called the local cyl head engineering joint, they gave me the number for a camshaft place. Cant get through to them so will keep trying and see what happens

[Jamie88]

Just took them to engine builders. The lift is equal to 307thou or 7.8 mm. I was under the impression this is what the standard lift was???

[Kranker]

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 March 31, 2009 by Kranker

[Jamie88]

Yeah seems that way doesnt it. What lift do the 264 cams come in? Anyone?

[Weapon]

Minimum is 8.8mm on the drop in cams for RB25's when i just had a look around just then mate

[Slide]

From the news of them being 7.8mm lift looks like you will be hunting for a refund from the seller

Goodluck.

[Jamie88]

Appreciate your help everyone...... now to get my money back.....wish me luck haha

[cactus]

Appreciate your help everyone...... now to get my money back.....wish me luck haha

keep us all posted!

[Jamie88]

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

[Mr. Oizo]

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?

[Jamie88]

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 ???