4k Timing Mark

[shane_carsrus]

hi, sorry in advance if this has been covered before, i can't find it in the search function, and am in a bit of a hurry......

 

I'm trying to set ign timing on a 4k that i got without a dizzy, and there are two separate marks on the crank pulley..

 

i know some cars have a tdc and then a 5 degree mark, but these seem to be too far apart for that... just want to know which mark corrosponds to tdc...

 

i would pull a plug out, but the computor is closer than a socket.... :y:

 

also, from various pics i have seen, the vac advance diaphragm seems to face the radiator(for a rough guide...)

 

any help would be much appreciated, cheers, shane.

[altezzaclub]

Take the rocker cover off and watch the valves.

 

You're right, the marks are completely unrelated and the TDC I marked with white Tippex. I've never worried about the other.

 

The vac diaphram unit aims at the washer bottle on mine.

 

Good luck!

[philbey]

I don't recall there being 2 on mine. The best way to identify if you're at TDC on #1 piston is watch for #4 rockers to be "on the rock". As you rotate the motor, you'll notice the #4 exhaust close just about the same time as the Inlet opens. That corresponds to #1 being about TDC.

 

Plus, if your marks are quite a long way apart, you'll not notice the other mark anyway as the light strobes.

[KENut]

There is two marks on the front of the crank pulley and one on the back from memory, which is the one you want.

[shane_carsrus]

ahh, cool thanks guys! shall have a crack.... also today, am havin a lot of trouble finding a throw out bearing for the standard 5sp...repco have only two listings, both of which are wrong......has any one bought one recently...?

[philbey]

Mate there should be no issue with the throwout. I got mine in an Exedy clutch kit, no problems.