Air/fuel ratio controller

[barnett468]

Yes, advance it 4 degrees then and do the drive test I described .

You pinging comment suggests that this will be as much timing as you want to run even if it does not ping.

We should also determine if your timing marks are correct.

Tty to restart it when its hot . . if it turns over slowly, it now has too much timing at idle.

[GLENN 70]

Well true if the balancer has moved and the marks are wrong . But I still don't like it if its pinning up in the higher rev range and for what ever reason you can't hear it ping . Best doing a TDC test and check the balancer markings .

[barnett468]

I still, still, still need yo know the timing when just turning it over with the starter.

Also, floor the pedal fast and hard from a dead stop up to 60 kph and see if there is any flat spots . . I want you to set your secondaries do the open a bit sooner yo see what happens.

[Shep69]

Just checked out the balancer and its reading correct at TDC .Like i said to Glenn , when i ran it on normal unleaded fuel it did ping but on 98 it went away.

[Shep69]

I still, still, still need yo know the timing when just turning it over with the starter.

Also, floor the pedal fast and hard from a dead stop up to 60 kph and see if there is any flat spots . . I want you to set your secondaries do the open a bit sooner yo see what happens.

How do i do that without the motor starting?

[barnett468]

How do i do that without the motor starting?

If you actually read my posts you will see that I already told you . . remove all the plug wires except for the number 1 cylinder which is the front left as you face the car from the front.

[Shep69]

Rodger That. Ok we still have 18deg when turning the engine over with the plugs pulled.

[Shep69]

barnett I tried what you said and advanced it 4 deg more than it was and i cant hear it ping.  It still starts fine when the engine is warm. It ran a bit sluggish though.

[barnett468]

barnett I tried what you said and advanced it 4 deg more than it was and i cant hear it ping.  It still starts fine when the engine is warm. It ran a bit sluggish though.

Xlnt . . OK, based on your info it should have more power so I would test it again then retard it 4 degrees and try it again . . you can take the wrench and timing lite with you . . you only need to drive it 1/2 mile to test it . . driving further is useless. 

Do the test from a stop 3 times and the test fro. 20 kph 3 times then retard4 degrees and do the same thing . . it is basically not possible for it to be slower now,  it just doesn't work that way.

You must do the test exactly the same way every time.


The fact that it has no hesitation means it is times and jetted very close.

Part of the reason its slow is due to your 3.00 gears and std eddy intake manifold.

[barnett468]

Just checked out the balancer and its reading correct at TDC .Like i said to Glenn , when i ran it on normal unleaded fuel it did ping but on 98 it went away.

The nonly way you can know if the balancer is reading correctly is to use a piston stop in number 1 spark plug hole to find tdc with the piston, did you do this?

[barnett468]

Rodger That. Ok we still have 18deg when turning the engine over with the plugs pulled.

OK,xlnt . . your timing is not advancing at idle.

[barnett468]

Well true if the balancer has moved and the marks are wrong . But I still don't like it if its pinning up in the higher rev range and for what ever reason you can't hear it ping . Best doing a TDC test and check the balancer markings .

Its not likely pinging because it would likely not have increased rpm by a few hundred rpm as he claimed if it was advanced yo the point of detonation plus some pinging is acceptable providing it is minor.

[barnett468]

.

Crane 288 2h can specs

288 296? . . 218 230 . . .488 .498 . . LSA 114 . . rpm 2000 to 4500 plus 500tpm over run.

Based on this you could get away with the std eddy intake but I would tty a 1 inch spacer.

Also, if you want quicker acceleration and don't drive for long periods at 114 kph, I would install 3.25 or 3.43 gear s.

You would also likely be better off with a comp xe262h cam

[barnett468]

Its also quite possible your compression is low . . I would check one cylinder . . if it is around 140 or less, you could increase it to around 170 and retard the timing back down yo where it was yesterday.

[Shep69]

Cheers for all the info Barnett. My panel beater mate came over and wants to make a start on my car so i will have to leave the timing issue for another day . Dont think it will be back on the road any time soon now as im replacing the RHS rear quarter and a new paint job. Thanks again.