Degree Tomei Poncams Type-B Rb26

[andre_gtr]

Hi guys some help needed please

I want to degree my tomei poncams B's

My setup is flowed and ported head with a set of -5's

So from some searching I see setting them 2 degrees advanced on intake and 4 degrees retard on exhaust side, I,m happy to try those settings for the initial setup but would like to k ow if that is 2 degrees on the cams or 2 degrees on the crank

Just want to be sure on my starting point and don't want fcuk something up

thanks

[Ben C34]

Why don't you set them to zero as your starting point as that is what tomei intended?

[Ben C34]

And you aren't really talking about degreeing in the cams. You just want to alter their timing a bit.

Degreeing cams uses a degree wheel and dial indicator.

[andre_gtr]

And you aren't really talking about degreeing in the cams. You just want to alter their timing a bit.

Degreeing cams uses a degree wheel and dial indicator.

Thats what I'm doing

[XKLABA]

It's been awhile since I had Type BS but from memory the setting I used where 4 adv on intake and 9 ret on ex giving a 106 lobe centres, when I brought the car the cams where at 12deg on in and 14deg on ex which made it lumpier the a bridge port

The markings are in crank degrees so one mark is 2degs on crank

[GTRPSI]

Make sure you degree them and set them to the paper specs that came with them, then note what your cam gears are set at, whatever they are set at is your true zero degrees.

Point being if you have shaved the head, played with gasket thicknesses, etc zero on the cam gears is not necessarily the true zero position of the cams in relation to the crank.

Get a degree wheel and a dial indicator to do it properly.

[andre_gtr]

Thanks that makes sense will get 0 first and go from there lucky i have ross damper with degree markings on it

[sucram]

I wouldn't go off the dampers markings, you need a dial gauge to do it properly to locate TDC

[andre_gtr]

Hi Guys

just out of interest, when finding true TDC would You set your CAS timing to this new mark or to the old mark on the belt cover?

I followed this procedure to get true tdc http://www.nicoclub.com/archives/how-to-degree-an-rbxxdettt-camshaft.html

and it is a bit away from where it would be for a stock setup

[GTSBoy]

When you find true TDC you can mark the balancer pulley with a fresh mark to line up with the pointer. And of course can mark +5, +10, +15 degrees also if you like. When playing with the CAS, you don't pay any attention to where the CAS says it's pointing, for the same reasons you don't trust the zero positions on the cam gears....it's always adjusted to what's going on down at the crank.