Camshaft Development

No idea on price as yet getting hold of the correct blanks is a bit of a stumbling block. Will depend on if the standard exhaust cam is retained. I imagine it will be far less than the 500 -600 Pound + import fees for a pair of Kent or Piper cams. ;) if blanks are used the keyway can be cut in the precise position for best performance for the XU9J4Z engine eliminating the need to change pulleys, fit different keys or fit vernier pulleys. :cool:
 
Here in Melb there's a place called Wade cams and as u can imagine they grind cams.

My thoughts on getting cam grinds are to go for the biggest lift and duration the stock cam will give you b/c anything bigger than this will turn the car into a fish. It doesn't stress the springs too much, u keep the stock AFM etc and get an extra 5KWs.

Your thoughts?
 
rick_b said:
if blanks are used the keyway can be cut in the precise position for best performance for the XU9J4Z engine eliminating the need to change pulleys, fit different keys or fit vernier pulleys. :cool:
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I doubt it. The cam grinder will specify where to put the cam, either by lift at TDC, or by max. lift at the lobe centre line (eg. 106 deg after TDC). Either way, you'll need a dial indicator to set it up correctly.

here's some reference material that might be usefull:
http://www.catcams.be/
 
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PeterT said:
I doubt it. The cam grinder will specify where to put the cam, either by lift at TDC, or by max. lift at the lobe centre line (eg. 106 deg after TDC). Either way, you'll need a dial indicator to set it up correctly.

here's some reference material that might be usefull:
http://www.catcams.be/
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;) Agree vernier pulleys are the ideal solution, however; with the equipment these guys have the cams will require very little adjustment out of the box. I have found that there is not the variation between cams with the same part # that is evident with some from other manufacturers. What I was getting at is that the inlet cam lobes can be ground advanced compensating for the XU9J4Z inlet pulley. A cost saving for those on a budget. :cool:
 
Got a price for some cams up here in bris, grinding existing cams approx $500 and new cams are about $1100 for the pair, made to what ever spec you want.

But he did say if its only for road use without throttle boddies you want to stay around the 275 degrees duration mark.

Im just waiting for some specs to come from the UK hoping to have them by end of teh week.

Will keep use posted

Cheers.
 
immy s16 said:
Got a price for some cams up here in bris, grinding existing cams approx $500 and new cams are about $1100 for the pair, made to what ever spec you want.

But he did say if its only for road use without throttle boddies you want to stay around the 275 degrees duration mark.

Im just waiting for some specs to come from the UK hoping to have them by end of teh week.

Will keep use posted

Cheers.
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Don't get sucked into buying two for road use. You only need to change the inlet cam.
 
PeterT said:
Don't get sucked into buying two for road use. You only need to change the inlet cam.
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What sorta of specs do you recommend for the inlet cam, and also may sound like a silly question but why is it no use to doin the exhaust cam too.

Thanks
 
immy s16 said:
What sorta of specs do you recommend for the inlet cam, and also may sound like a silly question but why is it no use to doin the exhaust cam too.

Thanks
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The exhaust ports are very efficient, so changing the exhaust timing for road use is a waste of money/time.

Something around 235 deg. @ 0.050" lift will be fine. Stay under 240 deg.
Lift should be around the same as the std. cams. This will work fine with the std. S16 compression ratio and an aftermarket ECU.
 
I got these specs from kent cams, these are based on a S16

Sports injection cam, power band 1500 - 6000rpm, cam lift 10.06mm, valve lift 10.06mm, Duration 262 degrees, Timing figures 21/61 61/21, valve timing 110 degrees, valve clearance 0.00mm

Sports ' R ' cam, power band 2000 - 6500 cam lift 10.94mm valve lift 10.94mm duration 264 Degrees timing figures 20/64 64/20 valve timing112 112 Degrees, vale clearance 0.00mm

Supersport cam power band 3000 - 7000, cam lift 10.82mm, valve lift 10.82mm, duration 290 Degrees, timing figures 37/73 73/37 valve timing 108 108 Degrees valve clearance 0.00mm

Supersport ' R ' cam, power band 3000 - 8000 cam lift 11.98mm Inlet 11.27mm Exhaust valve lift 11.73mm Inlet 11.02mm Exhaust, duration 314 296 Degrees, timing figures 51/83 74/42, valve timing 106 106 Degrees, valve clrearance 0.25mm

PT2006 Race cam, power band 4500 - 8500 cam lift 11.98mm, valve lift 11.73mm, duration 314 Degrees, timing figures 53/87 87/53 valve timing 104 104 Degrees, valve clrearance 0.25mm.


I personally like the figures of the super sport r cam and the supersport cam what worries me about the super sport cam is the valve clreaance been 0.00mm is this possible or have they made a mistake in the figures.

Any advice will be greatly appreciated

Cheers
 
immy s16 said:
I got these specs from kent cams, these are based on a S16

Sports injection cam, power band 1500 - 6000rpm, cam lift 10.06mm, valve lift 10.06mm, Duration 262 degrees, Timing figures 21/61 61/21, valve timing 110 degrees, valve clearance 0.00mm

Sports ' R ' cam, power band 2000 - 6500 cam lift 10.94mm valve lift 10.94mm duration 264 Degrees timing figures 20/64 64/20 valve timing112 112 Degrees, vale clearance 0.00mm

Supersport cam power band 3000 - 7000, cam lift 10.82mm, valve lift 10.82mm, duration 290 Degrees, timing figures 37/73 73/37 valve timing 108 108 Degrees valve clearance 0.00mm

Supersport ' R ' cam, power band 3000 - 8000 cam lift 11.98mm Inlet 11.27mm Exhaust valve lift 11.73mm Inlet 11.02mm Exhaust, duration 314 296 Degrees, timing figures 51/83 74/42, valve timing 106 106 Degrees, valve clrearance 0.25mm

PT2006 Race cam, power band 4500 - 8500 cam lift 11.98mm, valve lift 11.73mm, duration 314 Degrees, timing figures 53/87 87/53 valve timing 104 104 Degrees, valve clrearance 0.25mm.


I personally like the figures of the super sport r cam and the supersport cam what worries me about the super sport cam is the valve clreaance been 0.00mm is this possible or have they made a mistake in the figures.

Any advice will be greatly appreciated

Cheers
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Trouble is they're only fairy tale numbers. Here are some specific numbers I managed to extract from them for their Mi16 cams, which are almost identical to S16 cams. Trouble is, poms quote at 0.040" lift. Substract a few degrees for 50 thou figures.

Supersport cam power band 3000 - 7000
PT1603
282 @ 0.010" and 241 @ 0.040"

Supersport ' R ' cam, power band 3500 - 7500
PT1604
298 @ 0.010" = 298 and 244 @ 0.040"

Also, have a look at www.catcams.be.
Their 4900520, for example, has 242 deg. @ 40 thou., and is recommended for off road and pro street only, with adj. ECU or carbs.

In my opinion, you wouldn't want any thing bigger than the PT1603.

I've got some new cams which are 245 @ 50 thou., 9.5mm max. lift., but they need 11:1 min. to make them work, and probably have a 4000-8000 rev. range.

Also, the poms use heaps of lift, which causes unnecessary valve train wear.

0.00 lash means hydraulic lifters.
 
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Just got an email from kent cams with prices they must be nuts over there

540 punds for a pair or 270 pounds each

to my calculations do buy one you will be looking at approx $640 for one cam :eek:
 
Thats not so ridiculous.

My cam for the 8v was about $600.
 
and didn't you say, "and new cams are about $1100 for the pair"?
 
PeterT said:
and didn't you say, "and new cams are about $1100 for the pair"?
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Yes thats tru sorry i got caught up in the whole regrinding thing at around the $200 mark


My bad
 
Hi all recieved another email this one is from catcams thanks for the link Peter T

i got an email from cat cams as follows
Hello,

For the hydraulic profiles this CR is OK, but for the mechanical profiles 11/1 to 11.8/1 is advised.

4900516 is at 499€/set

all others are at 599€/set.

This is before Your export discount and transport costs.

Lead times 7-10 working days.

Best regards

Ludo

Out of the hydraulic profiles what do use reccomend to be best suited, as to what i want to improve on the car is the bottom end and mid range.

the range of cams are at http://www.catcams.be

Rick try and see what you can find out from crow cams

Cheers

Thanks for the advice
 
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