Poncams installed... 221 rwkw in RB20

[jnr32r]

Finally after playing around with RB26 cams which i couldnt get to work, i installed the Poncams with good results.

Power went from 207 to 221kw both @ 18psi.

There is sooo much more top end its unreal, it just hits redline so much quicker, this is obvious in the graphs, where before power would drop quite dramatically it now holds a lot longer.

4500 165 172

4700 176 181

4900 183 189

5100 190 197

5300 196 207

5500 204 216

5700 207 220

5900 204 219

6100 201 217

6300 200 214

6500 192 210

Average Power = 192.5 203.8

If the first run continued to 7000rpm you would see an even bigger difference.

At first i was a bit dissapointed with the max power, but just lookin at how much more top end its gained im stoked.

Its off to the creek in a month or so ....

[Waldo]

what were your other mods done to you car?

[jazza08]

what turbo u running? Makes alot of power early including peak power at only 5700rpm!

Good figures though

[FATGTS-R]

What he said^^^^^^.

Interested on cam specs and what turbo is being used.

Nice result. Its not just top end thats improved it has gained power everywhere.

At 4,000rpm both setups are on par at approx. 100rwkw. But from then on the new setup is ahead on average 15rwkw all the way to 6500rpm and then gets better from there. I was always under the impression cams would sacrifice a little down low for the gains up top but this setup has proven me wrong. Do you have the boost graph from before? Because it even looks like boost is coming in earlier?

[jnr32r]

Set up =

Power FC, HKS 2535, R32 GTR Cooler, Bosch 910 , RX7 S5 inj, Q45 AFM, Std manifolds, Std Motor with 170 000 Km...

Tried running @ 21 psi but there was very little increase in power opted for safer 18 psi

[jazza08]

i would of thought that turbo would of made peak power even later than a stock turbs!

Is your power FC tuned for responce rather than peak power? Its very well known that the tune can change everythin!

18psi wit 170,000kms, motor must of been very well looked after mate

[Cubes]

You still haven't told us what cams you are running.

Now you have done cams you will find a nice little manifold will help top end not to mention mid range. Possibly a HKS Cast item? They are cheap and flow well.

Excellent result.. Looks a lot like Roy's power curve.

Roy what cams were you running?

170,000km's.. Doesn't suprise me, The little old RB's are tough.

[jnr32r]

Id love one of those manifolds, just cant find one. Missed out on a couple for sale here on the forums.

Cams are 256, 8.5mm

[Roy]

Ahh good stuff, sinally someone that has tried cams.

Can i ask how much they set you back? I so wish my engine had cams:(

[Beer Baron]

Troy, get some cams. you know you want to.

[R31 POWER]

Orsam result.Did you have to do any shimming?

[Cubes]

Interestering how peak rpm power stayed the same...

Did the cams come with the specs, intake opening closing etc?

Its a little sheet that should state something along the lines of IVO, IVC, EVO, EVC.

[jnr32r]

Interestering how peak rpm power stayed the same...

Did the cams come with the specs, intake opening closing etc?

Its a little sheet that should state something along the lines of IVO, IVC, EVO, EVC.

thats what i thought as well....

no specs sheet except for table on what other cams are available, like 260, 8.80mm lift ... however if you want to use those you have to go to solid lifters...

They set me back about $900.

And they are a straight bolt on, no shiming required...

[R31 POWER]

So the GT2535 does'nt perform better at +21psi.

[RedDrifter]

Ahh good stuff, sinally someone that has tried cams.

Can i ask how much they set you back?  I so wish my engine had cams:(

Yeah me too.

Cams seem to really help widen the power band.

[Chris32]

Yeah, great result.

For the money spent, I reckon doing a cam swap for a set of Poncams is better value than doing the whole adjustable cam gear thing

I reckon this is what my car needs, just to get some more useable RPM out of it. Im sick of changing gears at 6500rpm! 8000rpm is what I want!

[Bass Junky]

Cam also need better airflow to work properly.

Mine made no differnce in peak power, but average power was down. (Stock Turbo) but when I would in a touch more boost, look the fark out, because it took of like a rocket.

Just gotta get my higflow now!

[RedDrifter]

Yeah, great result.

For the money spent, I reckon doing a cam swap for a set of Poncams is better value than doing the whole adjustable cam gear thing

I reckon this is what my car needs, just to get some more useable RPM out of it. Im sick of changing gears at 6500rpm! 8000rpm is what I want!

Standard cams should let you change round 7800 still?

Stock turbos dont help I guess.

[Bass Junky]

Nah, power noses over at about 6800.

[jnr32r]

Yeah, great result.

For the money spent, I reckon doing a cam swap for a set of Poncams is better value than doing the whole adjustable cam gear thing

I reckon this is what my car needs, just to get some more useable RPM out of it. Im sick of changing gears at 6500rpm! 8000rpm is what I want!

Forget about getting cam gears, even tho ive got these they made very little difference. They were tuned at 1deg advance on inlet 1deg retard on exhaust.

Thats when you know cams are well made, when they need very little to no adjustment to get the best results.

Save your money and get urself cams not cam gears !