Thread: Poncam setup

I have picked up some Poncams for my bitsa VE /high port DE motor im chucking together

They are second hand ex S13 SR20DE in good cond, but cam with no good instructions on setting the cam timong or dialing in

The specs i do have is:

Intake Cam Angle: 260 degrees

Exhaust Cam Angle: 260 degrees

Intake Lift: 11.20mm

Exhaust Lift: 11.20mm

Any idea what i should set the cams to, i assume i will have to do a centerline setup as i have no lift timing settings.

Does anyone have correct specs or suggest something that may work for a base setting.

Cy

Found this...... does it sound right?


Tomei Poncams

Intake and Exhaust cams - 11.2mm lift and 260 degree duration.

Runs with stock valve train. Stock ECU can cope with this cam, but a remapped ECU makes the best out of it.

Recommended Intake cam centreline - 110 ATDC
Recommended Exhaust cam centreline - 64 BTDC

Recommended overlap - ((180 - 64) + 110))/2 = 113 degrees.

If you are putting together a VE / highport, and you are using DE cams. I hope you are not using a VE head.

Not some idiot who would think DE cams would work in a VE dude.

Its a Ve block 4 counter crank, 16ve pistons JDM high port head

I thought the same thing when I first saw "VE /high port DE motor ". At least you cleared that up.

With the Poncam spec, you should write it as:

Intake Centerline = 110 ATDC
Exhaust Centerline= 116 BTDC

(110 + 116) / 2 = 113 LSA (lobe seperation angle) and not overlap.

For the overlap, you will need the degree intake open BTDC + degree exhaust close ATDC.

i had a set of these cams and ended up selling them on one of the rwd forums. i would search the other forum, they are a couple who have used them in our cars there. so you may see some older threads. i got them cheap thats the only reason i picked them up.

Hahahaha, take it easy. When everybody thinks VE/DE hybrid, they think VE head OF COURSE, not the other way around. In fact, I wouldnt even mention the VE or clearly say VE block.

To answer your question, a guy used these on his highport straight in and had the courage to go to the dyno and lost like 20WHP all around from the previous dyno with highport cams. If you go this way you will have to play with sprockets like hell.

Cheers dude, some actual useful info. I cut and pasted that stuff straight off another old pulsar forum.