timing

[93toyota]

i got a 71 duster w/ a 318 3spd manual. can't seem to find where in my manual it tells you what to time it at. anybody got any ideas how to time this thing? :salut:

 

[Mopower71]

Should be TDC +- 2.5deg with engine idling and vacuum disconnected from vac adv unit

 

[AdamR]

Id bump it up to about 10 degrees ATDC

 

[Mopower71]

Me too. But that's spec for that engine.
I always bumped the timing up to the point of detonation then backed it off a bit. Makes just a wee bit more power and a little bit better fuel milage if you can keep your foot out of it.

 

[93toyota]

plug the vacuum hose too

 

[Mopower71]

You shouldn't have to as it's ported vacuum source.

 

[93toyota]

aircleaner on?

 

[GotDart]

Mopower71 wrote:

vacuum disconnected from vac adv unit

and then

You shouldn't have to [plug the line] as it's ported vacuum source.

So why would he need to disconnect it if it's a ported source?

 

[Mopower71]

hmmm You probably don't have to.But that's the way the books were always written. But what if you have a slight vacuum leaking through the ported vacuum source.
Leaving it open won't affect timing, it will affect carb mixture though.