Tomei Poncams Degree Card

[GTR1993]

I have some tomei cams in my GTR that i bought not long ago, put it on the dyno quickly and got 70 more kw out of it (yes they were set up that bad). Makes 240 rwkw at 14 psi (steel wheeled turbos but unsure what is actually done, ie bigger wheels)

When you buy the tomei cams new do they come with a degree card to dial in the cams properly? If so does anyone have it so i can do it, if not if it just trial and error?

Cheers

Edited March 19, 2007 by GTR1993

[700HP-GTR33]

I have some tomei cams in my GTR that i bought not long ago, put it on the dyno quickly and got 70 more kw out of it (yes they were set up that bad). Makes 240 rwkw at 14 psi (steel wheeled turbos but unsude what is actually done, ie bigger wheels)

When you buy the tomei cams new do they come with a degree card to dial in the cams properly? If so does anyone have it so i can do it, if not if it just trial and error?

Cheers

If you mean the 9.15 lift PONCAMS....they are stated that a 0 intake and 0 exhaust is best,for stock motor.

You have after market turbo's so -2 or -3 on intake and -4 to -6 on exhaust is the area I

would be experimenting on in the tune.

Good luck....A 5 to 6 hour tune is required to get them spot on.

[STATUS]

If you mean the 9.15 lift PONCAMS....they are stated that a 0 intake and 0 exhaust is best,for stock motor.

You have after market turbo's so -2 or -3 on intake and -4 to -6 on exhaust is the area I

would be experimenting on in the tune.

Good luck....A 5 to 6 hour tune is required to get them spot on.

yeah but zero on the gears is not often zero on the cams, HKS especially need dialling in to get a "real" zero. some supra ones i used on this car a few years back were ~4 degrees out.

Edited March 19, 2007 by URAS

[GTR1993]

yea and because the motor is rebuilt with a thicker head gasket, along witht he deck may or may not have been decked can also change where true 0 is, i threw it on the dyno and got some good gains and got the mixtures where they needed to be, i think the exhaust cam could still be holding in too much exhaust gasses (or the exhaust was too restrictive i cant rember if i still had the minature cat converter in it) as it didnt want to take much ignition timing.

What timing can you put into these 26s? I was suprised as mine seems to be decompressed (flat 125 psi across all 6) and didnt like alot of timing.

[rev210]

you don't get the little degree wheel card, at least I didn't. No big deal you can download a template from the net (do a google) and borrow/buy/hire a dial guage or borrow/buy/hire the wheel at the same time.

[GTR1993]

Nah i dont mean the wheel, i mean at what crank angle should the inlet/exhaust be opening the valve 20 thou, or how ever they want to rate it as.

On some wade cam specs i got here it says when they are open 50 thou so you can get a decent starting point, then go from there.

Edited March 20, 2007 by GTR1993

[700HP-GTR33]

yeah but zero on the gears is not often zero on the cams, HKS especially need dialling in to get a "real" zero. some supra ones i used on this car a few years back were ~4 degrees out.

When you install cams...you need to put them in at 0 degree..I think they call it drop centre.

There is lots of talk about this on the Forum...do a search.

You then dial the cam gears to adjust the cams.

Am I reading you guys right here.

More than likely the Supra cams or cam gears were installed incorrectly....it is easy to make a mistake .

[rev210]

you do get the profile specs in the box but, you will need to use the tools to set them up or at least check it's set where it should be.