idle timing on turbo engine

[70turbobaja]

Hey guys whats up I was just wondering what you guys set your idle timing to on your dizzys those of you who use bosch 009. I already put in the screw to limit it to 24* but I want to set up my idle timing

[Clonebug]

Idle is usually around 8-12 degrees but every engine is different and with a 009 idle timing is designated by the max timing you set.

In your case you could set for 30 degrees at 3000 rpm unlimited and then use the screw to limit it to 24 and let the idle go where it goes.

With my FI have my idle timing around 12-14 degrees.

Ar you could set it for 8-12 degrees and then limit it with the screw..... your choice.

[miniman82]

It depends on your cam and compression. The bigger the cam and the lower the compression, the more idle timing you will need to keep it stable. I think I ended up at like 14-16 degrees on my 1915, any lower and it started to lope really bad.

[70turbobaja]

Yeah I will mess with it see where it goes. But that will be in the near future I hope. Im in the hospital with my 2 day old daughter so my mind is going crazy. But thanks alot I will let you know how it goes

[sidemarkers]

It depends on your cam and compression. The bigger the cam and the lower the compression, the more idle timing you will need to keep it stable. I think I ended up at like 14-16 degrees on my 1915, any lower and it started to lope really bad.

I am running timing well into the 20 inch range at idle. If you can program advance into the curve at high vacuum as well, driveability and mpg will increase.

[miniman82]

Only if you trim fuel at the same time, high timing and a rich mixture doesn't equal MPG.

[Buggsy]

I run 20 initial, very limited centrifugal advance, and as much ported vacuum advance as I can get. Total at light throttle is probably in the 34 to 36 range. At WOT, you loose ported vacuum and end up with 24 to 26 with boost. You'll have to trade in your 009 for an old Bosch with a vacuum canister and centrifugal both, and use a carb that can be set up for ported vacuum. You'll find it well worth the time and effort, and you can buy these old distributors for almost nothing at swap meets. This works well if your running a big deck to keep the compression down on a stroker engine with turbocharging.

[miniman82]

R went for a flush deck height, instead setting static compression by hogging out the head chambers. I haven't had a distributor for more than 8 years, coil pack and programmable crank trigger is the way to go.

[sidemarkers]

Only if you trim fuel at the same time, high timing and a rich mixture doesn't equal MPG.

Yes, that goes without saying. One of the many benefits of tuning with engine management.

[WickedWagens]

I tried to set my idle timing to around 12 degrees with 24 total advance, but with the low compression and 110 octane fuel I had to just lock it at 24 and leave it there.

[panel]

I had mine welded , started every time and drove well also.

I tried to set my idle timing to around 12 degrees with 24 total advance, but with the low compression and 110 octane fuel I had to just lock it at 24 and leave it there.

[rs58rag]

18* at idle, then 24*.