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approx cost to fit adjustable exhaust cam wheel?

Ronin 09

By Ronin 09,
in Engines & Forced Induction

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Guest RedLineGTR

Guest RedLineGTR

Posted
Posted

what about cam shafts...i hear thier are two types of lilke HKS ones...one for top end one for bottom end..is it true that u get a different exahust note? and how much power extra would you get on a mild mod setup. Would it make much diff? or would it make it worth while when high HP applications are in use...

T0nyGTSt Grand Master

T0nyGTSt

Posted
Posted

Well Sydneykid comes up with the goods YET AGAIN!

What he says seems to gel with what I'm hearing.

Aftermarket cams be they HKS, Tomei, Jun etc. usually have everything dialed spot on.

Drop them in. Instant power in the middle.

But $200 - $300 sounds like a good deal for an alleged 10-15kW.

But like all timing improvements, it's more FEEL rather than numbers.

T.

BOOSTD Mentor

BOOSTD

Posted
Posted

Jay: D1Garage here in Adelaide.

Everyone- Cam gears are very easy to fit, do it urselves. I paid $70 for dyno time/tune. Found that -4 degress is pretty spot on so I wouldn't bother getting it done on the dyno. However every car is different, lets just say if -4 degress gives you a very noticable difference, leave it were it is! The difference to me is like how the car runs on a cold day compared to hot.

Steve Grand Master

Steve

Posted
Posted

Sorry Benm, I dont know how much it would cost. Why not give it a go your self? Couldnt be more than a 1 hour job to fit? BOOSTD? so on standard mech rates around $50-$70. Its seems pretty common, with stock cams to set up R33 to -4deg exh side.

Rob77, it was a second hand one from Japan that James picked up when he was over there.

they also have a set of 2 second hand if anyone is chasing more. think they are asking around $150 for both.

ned Enthusiast

ned

Posted
Posted

I was looking at this as a way to gain earlier boosting, and more low/mid range, but was put off when I was quoted "5 hours tuning to get it right!!!" all up the workshop wanted $1100 fitted and supplied.

I left it for a later date

Ned

Sydneykid Grand Master

Sydneykid

Posted
Posted

Hi Ned, 5 hours is about right if you change the cambelt at the same time, which is not such a bad idea if you have more than 50K on the current belt.

Even without changing the cambelt, but still changing 2 pulleys and tuning from scratch, 5 hours is again about right. But with the help of the guys on this forum you can cut that down. Tell them to start at 1 degree advanced on the inlet cam and 4 degrees retarded on the exhaust. Then add advance to the exhaust cam in 1 degree increments until you have stiffened up the midrange (I work in 500 rpm increments from 3,000 rpm to 5,500 rpm) but not gone below the max power you previously had (without adjustment).

Once you have done that then sneak some more ignition advance into it, it should take 2 or 3 more degrees before pinging. Then they may be able to take some fuel out of it, not much though. I don't go below 12 to 1 A/F ratio on the F & W lambda, that's a safe place to be. You shoud see may 10 to15 rwkw increase in the max power but sometimes as much as 25 rwkw in the midrange.

As you can see if you want a good full rpm tune, it does take time. If you just want max power at one rpm point to brag about, then that takes a lot less time.

Hope that helps.

Guest INASNT

Guest INASNT

Posted
Posted
Originally posted by RedLineGTR

Sydney kid what about cam shafts...would there be any point in using them in a mild tuning application....

wouldnt bother rob unless u r going bigger turbo, new head gasket to lower the compression and running lots of boost

ned Enthusiast

ned

Posted
Posted

Hi Sydneykid,

thanks for the detail. I guess I had the idea that there was a bit of a sweet spot that could be dialled in (the +2, -4 degrees I hear regularly), with maybe another hour of fine tuning. BUt obviously its more involved than that.

Since you mentioned that the AFR's will help here as well, I guess that means that it would be best to wait until you also get an Emanage / SAFC / PFC to really optimise it?

I was trying to chart my own route to better low/mid range by doing front pipes / cam gears, and leaving the exhaust and ecu stealth style.

Ned

SLY33 Mentor

SLY33

Posted
Posted

i have an HKS cam gear for my exh for my RB25

got a quote on fitting it from tilbrooks, but unfortunately this includes water pump, fitting/labour etc, so im not sure on cost of gear fitting only, but all up they quoted me $450 and 5hrs to fit the pump and set up the gear.

to tune my power FC they quoted me $250, which seems cheap to me? i expected around the 400 mark. How much has an ecu tune cost the rest of you?

T0nyGTSt Grand Master

T0nyGTSt

Posted
Posted
Originally posted by SLY33

to tune my power FC they quoted me $250, which seems cheap to me? i expected around the 400 mark.  How much has an ecu tune cost the rest of you?

It depends.

How long is the proverbial piece of string?

For me, the final dyno tune is just to cement AFR, Lambda etc.

The road tune should get 95% of the way there.

So I've been quoted 1 to 2 hours dyno time.

And that's an avg. $100 - $200.

If it was a PowerFC tune from baseline, we could be here for quite a while.

T.

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