Let's talk Timing again.
Thread Starter
|
Mountain Pass
Joined: Oct 2009
Posts: 167
Likes: 0
Let's talk Timing again.
So I posted a thread some time back regarding timing on my 7.3 non turbo with a Banks Sidewinder. I did a search for the thread but to no avail. So as a refresher: 8 degrees advanced at 2000 rpm. On the previous thread one person mentioned......I believe: that you will pick up some torque and mileage if you retard it a bit from 8 degrees. So my question would be, how much? Are we talking like 2 degrees back to 6 degrees advance @ 2000 rpm?
Thanks,
V-465
Thanks,
V-465
Fleet Owner
Joined: Jul 2006
Posts: 20,322
Likes: 789
From: Mi'kma'ki
if you rent timing tools,just set it at 8 BTDC.this is in the middle of the spectrum.if you own a meter then experiment with 6-10 BTDC.running a few tanks worth of fuel at each setting and see what your truck seems to like most.
the only thing iv personally experienced over 8 BTDC was increased engine rattle.others claim performance comes with the rattle.
the banks spools really snappy.as you know,it's just like n/a pretty much.but as a general rule, a bit more retarded will cause the turbo to spool quicker.basically,you can set it set it and forget at 8 BTDC and not worry about loosing out on anything.if you own the timing tools,have fun and experiment.
the only thing iv personally experienced over 8 BTDC was increased engine rattle.others claim performance comes with the rattle.
the banks spools really snappy.as you know,it's just like n/a pretty much.but as a general rule, a bit more retarded will cause the turbo to spool quicker.basically,you can set it set it and forget at 8 BTDC and not worry about loosing out on anything.if you own the timing tools,have fun and experiment.
Thread Starter
|
Mountain Pass
Joined: Oct 2009
Posts: 167
Likes: 0
Thanks! I just purchased my pulse converter and tachometer timing light with the advance scale on it so I can mess around with it. It was around 8, I just barely moved pump and it is around 2 degrees right now. I will try around 6 degrees for a starter.
V-465
V-465
Postmaster
Joined: Dec 2011
Posts: 3,860
Likes: 7
Also, mind, these settings only really work /right/ if you've got a new/not-worn pump. Once you've got 80+K on it, the timing starts to slip and you can get all sorts of odd effects; the 'sweet spot' can move quite a bit and start to vary with RPM(i.e. too retarded low end, works great high end/just right low end, no power high end)... so making sure you've got a good IP is critical to a good tune.
Thread
Thread Starter
Forum
Replies
Last Post
eatont9999
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
6
Mar 13, 2012 04:38 PM
