4k into a ke30(timing)

[fangsport]

theres 2 marks on the pulley, does it matter which one it is? and theres 3 marks on the block(20.10.0), do i just put the mark(pulley) to the 0 mark(block). and then i put the rotor arm to cylinder 1 lead aye?

cylinder 1 is closest to the grill aye? not the 1 closest to the firewall?

i had a little play around with it and it just dosnt want to fire.

if you have no1 at TDC (0 on the front cover) and it won't go, pull the dizzy out, rotate rotor 180 dergrees and re-fit.

lift the dizzy out of it's bore, spin the rotor 180 degrees, then refit. rotate crank 1 turn and check position of rotor(should at no#1 ).

[wde_bdy]

If you're not sure on how to check if your in the right TDC stroke pull off the valve cover as you turn over the engine by hand. You should be able to see that both valves stay shut as you rotate each side the TDC mark on the pulley. If the valves move much either side of TDC you are on the wrong TDC, turn the crank right around and try again.

Callum

[rwd_mayhem]

ive tried all these things, rotated it 180, tried using both marks on the pulley as TDC, nothing is working, what other reasons could there be for it not starting? maybe points? at the moment i just keep flatening the battery and have to recharge it and try again.

[Lloyd]

I was thinking it might be points a while ago but you said it had spark. Check the point gaps and see what you've got.

Is it actually firing? I know you said you've got fuel and you've got spark, but does it actually fire when turning it over?

[scope]

well when i tried starting it, i got a flame out the carb so i assume it's firing

[rwd_mayhem]

ok, im gonna do the points, when should they be most open? at TDC? what should they be set at on a 4k? is it 0.4mm? and they shouldnt touch at all??? also what is ignition timing?

alot of questions for the helpful toyspeed people.

[Lloyd]

Get to points to where they are most open (on the top of the lobe in the distributor basically) and then adjust it from there so the gap is whatever its supposed to be, not sure what it is off the top of my head. Base ignition timing should be 10°BTDC.

[rwd_mayhem]

what is base ignition timing? what is BTDC? 10° is 10 on the block right?

honestly im trying to learn.

[Lloyd]

Base ignition timing is the timing that you set at idle. 10°BTDC means the the spark is set to fire at 10° Before Top Dead Centre. As your revs/load on the engine change the point at which the spark fire changes so its not always going to fire at 10° before TDC. If you set it at 10 at idle it should work itself out though.

[rwd_mayhem]

ok, so how do u set it when its ideling? shouldnt this be what im tring to get right? at 10 not 0. since its not even tring to start, it just turns over and doesnt fire?

[rwd_mayhem]

could vaccuum hoses really stop it from starting?

[Lloyd]

There is a mark on your crank pulley which indicated where the crank is basically. When you are at TDC the mark will be perfectly lined up with 0 on the block. You base timing should be set at 10°BTDC, thats where you want the spark to be firing. If you have the rotor in the distributor pointing directly at the number 1 lead then the crank should be at about 10°.

You would expect it to still at least try to fire up with it on 0°. To set it at idle you need the car running (obviously) and get your timing light out. Loosen the bolt holding the distributor in place and turn the distributor until the mark on the crank is lined up with the 10° mark on the block.


What vacuum lines aren't connected? And you SURE that its number 1 that it should be firing on and not number 4 (thats what happens when you're 180° out with the distributor).

Check that you have spark at every spark plug lead. You might have spark at the distributor but its only getting to a couple of cylinders. Clean up the inside of the distributor cap at the 4 points with a bit of sand paper too

[rwd_mayhem]

so why is everyone telling me to set it at 0?

[Lloyd]

It should still try to start at 0, I'd be setting it at 10. Try it and 10 and see if that works.

[rwd_mayhem]

we have bought all new leads, cap, rotor arm, plugs, coil and points, still not starting though.

[fangsport]

was the motor a runner before this drama, or have you just rebuilt it?

the reason i ask, is that the valve timing could be way out, thus giving you no compression when it is needed.

any pushrod engine is so simple in it's workings that there is bugger to stop them from running.

[rwd_mayhem]

I GOT THE BITCH STARTED!!!!!!!!! i just set the points and tightened the earth wire and she roars! there was no way a 4k was gonna beat me! theres a few tinging noises now, is that over advanced, if i fidel with the timing now, it shouldnt ting anymore?

[scope]

!!!!!!

[fangsport]

I GOT THE BITCH STARTED!!!!!!!!! i just set the points and tightened the earth wire and she roars! there was no way a 4k was gonna beat me! theres a few tinging noises now, is that over advanced, if i fidel with the timing now, it shouldnt ting anymore?

uh oh, not the dodgey earth scenario ?????????

[Rob]

Hey man if your 4k is bog standard, then set the timing to 8 degrees BTDC. If it is pinging then your timing is to advanced.

On those old dizzy's there is a fine adjusting screw under a cap sticking out the side. Also disconnect the vacuum advance while timing the engine and slow the idle speed to I think 750 rpm

Should see ya right