putting cams back in!

[lowlux]

im putting the cams back in the the marks that i marked lol well i lost them,sooooo how do u line it up? theres some little dots on the gears so do i line them up with something? i was thinking the engine should be at TDC and those dots should represent TDC aswell maybe? also does any1 know the tourqe for the cam caps? and anything else i should know too would be good

[blind_elk]

This is for a RB20DET (probably works for other twin cams, not sure about RB30)

Crank at TDC #1

Locate camwheel on the locating spigot.

Align the marks on the camwheels with the marks on the backing plate (approx 10am on inlet, 2pm on exhaust)

[R31Nismoid]

Ha Andrew!

Still ain't got it back together

serves ya right for playing around with it i reckon

[lowlux]

thanks for that blindelk,thats a big help,now what about the tourqe on the cam cap bolts?

[lowlux]

oh and whats the best/easiest way to get you no1 piston to TDC?

[BigDatto]

Hey Lowlux,

Check this thread

http://www.skylinesaustralia.com/forums/sh...=SERVICE+MANUAL

A couple of guys (Carlo & Jamezilla) have posted that they have workshop manuals for R33 chassis. This would surely list torque settings for the cam cap bolts. I'm sure they'd be glad to help.

The best way to get TDC is turn the crank 'til the timing mark on the crank pulley matches TDC on the scale. ( where your mechanic points his timing strobe).

[lowlux]

cool thanks thats what i figured

[lowlux]

hey blind elk theres actually 3 marks on the backing plate for each cam, there at 45 degree spaces, also the TDC mark is on the bottom pully at around 2 oclock on the backing plate isnt it,and theres also a line on the pully that u have to align it with,also if your 1-2 teeth out on the cam gears will this be enough to send some vavles into mr piston? or is there a little leway

[blind_elk]

Might be a common backing plate for the 4-cyls as well. The 6s (actually RB20DET) use the the positions I described earlier. You'll be able to tell if you're close, because the valves (ins and exs) on #1 will be closed and #6 will be just open (the inlet and exhausts will be on overlap - ins almost closed, exs just opening).

Sounds right for the bottom pulley, just be sure to use the LAST mark (as you turn the engine) - that's TDC, all the others are BTDC.

2 teeth on the cam wheel is about 15 degrees of crank - probably more than enough to introduce a piston to a valve. Near enough is NEVER good enough!