Ignition timing

[Chrishoughton1989]

Hello all.

Just wondering, I bought a second hand engine for my glazia v and it didn't come with the dizzy etc. if I just bolt my old one on how will I no the ignition timing is correct? Cheers.

[Jamie_VF22]

Get a timing light

[Chrishoughton1989]

Is it not possible to set it using the marks on the cam ? On the dizzy end. Thanks.

[turbo Grant]

You can put it on close to your position of how your one is so it would run. But I wouldn't boost it till you have checked the timing with a timing light gun

[Chrishoughton1989]

So if i look on old head and position how it was? That will be ok until I get it checked ?

[rmsnoel]

Short answer chris, no. I could bridge the pins and set my idle at 750_770rpm because I kbow ive no vaccum leaks and my throttle is set spot on but u are fitting a new engine. A timing light is 20quid or ask around, someones dad always has one. My timing light is 36years old and Im 29.

You will use it again if you have it, 20quid is cheaper than than a cracked piston. Search how to set base timing. It 10° btdc on a warm engine with check pins crossed using a paperclip. Then when all timing is right you can set your throttle idle screw. Always check tps switch because its a on off type instead of the newer dimmer switch type.

[Chrishoughton1989]

Thank you. Does anyone have any guides to all this. Timing marks ? Using the gun ? Thanks.

[AdamB]

http://www.toyotagtturbo.com/forums/showwiki.php?title=How+to+set+timing

[mech5107]

Just a side note,

I've seen that retarding the ignition to about 6 degrees, i gain a lot in mid range... and not actually loosing at high rpm...

[Chrishoughton1989]

Thank you.

[AdamB]

Just a side note,

I've seen that retarding the ignition to about 6 degrees, i gain a lot in mid range... and not actually loosing at high rpm...

You would net more torque lower down the rev range, but it will suffer top end, which is where maximum ignition timing works best. You would be best off seeing what it does on the dyno, but every engines different.