UK225
Guest
Hi guys,
I am really hoping one of you may be able to offer me some insight into a problem that I have.
I have a BAM engine that is exhibiting some very strange timing pull, the retard is happening at below 3000 rpm, I am seeing up to 11.3 deg of retard yet the engine is not pinging whatsoever.
Higher up the rev range its fine only pulling about 6 deg at 6000 +
My fuelling is spot on, intake temps fine, in fact everything is fine except for the low rpm retard, the car still feels very quick but I guess it must be costing me some low down power.
The only suggestion that has come up so far is whether the knock sensors could be picking up harmonics caused by my single piece lightened flywheel/pulleys, indeed there is a lot of vibration at lower revs.
Has anyone ever heard of this before ?
I would really like to get to the bottom of it, but preferably without the expense of removing the flywheel to see if it cures it.
Thanks in advance.
I am really hoping one of you may be able to offer me some insight into a problem that I have.
I have a BAM engine that is exhibiting some very strange timing pull, the retard is happening at below 3000 rpm, I am seeing up to 11.3 deg of retard yet the engine is not pinging whatsoever.
Higher up the rev range its fine only pulling about 6 deg at 6000 +
My fuelling is spot on, intake temps fine, in fact everything is fine except for the low rpm retard, the car still feels very quick but I guess it must be costing me some low down power.
The only suggestion that has come up so far is whether the knock sensors could be picking up harmonics caused by my single piece lightened flywheel/pulleys, indeed there is a lot of vibration at lower revs.
Has anyone ever heard of this before ?
I would really like to get to the bottom of it, but preferably without the expense of removing the flywheel to see if it cures it.
Thanks in advance.