- Jul 7, 2005
I want to see
The 2618alloy piston by design requires a lot of sidewall clearance. In the first engine the machine shop didn't bore the cylinders correctly, and there was a lot of taper, and the piston skirts showed it. Although they resleeved the engine, the Pistons weren't checked for damage as a result. So,..despite the fact I put new rings in it that were gapped for a N/A engine, the skirts may have collapsed slightly, and the Pistons are rocking too much.Mike, I would not think the piston would be the issue. The rings should do the sealing, and as long as the piston side wall clearance is in spec, there should be no issues with blow by from a piston alone. Or am I missing something?
#1 you can run semi sequential with no changes to your current setup, and without the install of any type of sensor that gives a cam position. Thats what i use, I fire the injectors twice once at a valve that is opening and once on the closed valve at the exhaust stroke. This will improve idle regardless of how you do it.With all of the threads popping up about ecu upgrades, I think to myself, "maybe I'll look into this a little more,...maybe I'll write Cramer an email listing my concerns,..maybe I'll go downstairs, and open that box from DIY Autotune, and see what's in it.".........
So I did.
Anybody wanna buy a ms3x upgrade?
- Sequential fuel injection looks like it's gonna require a cam sensor so that the ecu will know what cylinder to fuel....( I have no way to "easily" add that...Every other engine only needs a duraspark distributor with a its sensor intact to solve that problem....I don't think I can even get a distributor to fit under the ITBs, regardless of how much I hack it up, and since a 250 I-6 never came factory with EDIS, there is no little pluggy dude to put in the distributor hole to serve that purpose. Lastly,..and even if I can........Billet roller cams require Bronze distributor gears( which I just happen to have...somewhere) But if I wanted to use a self-destructing bronze gear, I woulda done that years ago before I paid 800.00 for an external oil pump.))
- It "looks" like I'm gonna have to use a different trigger wheel if I even think of converting over to a COP style ignition.That reason alone would be the death nail for that conversion. If I can use a 36-1 toothed wheel to do this, the coil mounting clutter becomes the next issue, because I'd try to mount them as close to the plug as possible. I see no reason to do a COP/CNP if the coils are the same distance away as the current, perfectly working EDIS coil pack is now.
- I'd also want to potentially get rid of the FIDLE valve, and convert the thing over to a ford IAC valve for idle control. The current idle air valve opens like it should, but doesn't provide enough of a "vacuum leak" to provide much of a rpm jump, especially now since there are 6 throttle bodies in the mix. Cramer says that the MS3x upgrade would probably restore the fully functional IAC 1,2, of which the one I currently have is dead,....or conversely, I can just add a second idle air valve to let more air in when triggered.
- The "pie in the sky" optimist in me said that traction control, progressive boost control, progressive water meth injection, idle air control-tied to my AC compressor on/off status, cooling fan control based on speed, and individual timing, and sequential fuel control were all the "pro's" for buying this thing, so back in October plopped down 400 bucks and bought the upgrade.
- The conversion is dead easy it looks like. No soldering involved, the relay board is still used, the stuff just plugs into the main board, and it looks like the current ITB tune can be loaded directly. The case is way bigger, and I didn't ask about the Bluetooth adapter, but considering points 1, and 2 aren't gonna happen, and all the other stuff would be "neat", but probably not necessary,....... I keep asking myself why then would I do this?
ok lets say we do that, how does the ecu know which missing tooth to skip??Since the cam sensor is 2;1 ratio with the crank couldn't you put another gap 180° from tdc and have the crank sensor ignore every other pulse...and have the "cam " sensor read both gaps ? Or is that beyond ms3 ?
Here's where my computer & electronics background comes into play...ok lets say we do that, how does the ecu know which missing tooth to skip??
hmm... that sounds like a viable option, i will have to scour the software and manual
Nice, and ya'll expected yet another Power Spectural Density rant again. To ensure JR never has to suffer vertigo from our inabilty to listen to his lucid communication, I'll give you this visual info to elaborate:-Here's where my computer & electronics background comes into play...
It measures the timing interval between each pulse coming from the sensor and then compares them to each other. When it doesn't see a pulse from the sensor, it checks to see if the next pulse is 2 times the time interval of a normal pulse.
If it is, then that was the missing tooth that marks TDC or whatever event the computer uses a a reference point.
pmuller9 said:The PIP signal from the stock Ford distributor carries both the Crank signal and the Cam Sync signal.
One of the 6 window vanes is narrow so that all of the square wave leading edges have the same interval for the crank signal but one of the trailing edges is 30% different marking cylinder#1 for the Cam Sync signal.
Some of the aftermarket EFI systems are able to decode the Ford PIP signal directly for sequential use.
If you use a more accurate crank trigger wheel then you can remove all the window vanes but one in the stock distributor and use the single pulse as the Cam Sync signal.
Ditto, however to gain all inputs from just a crank signal is not feasible for #1 recognition. If this were just a cam sensor I could make it happen.Nice, and ya'll expected yet another Power Spectural Density rant again. To ensure JR never has to suffer vertigo from our inabilty to listen to his lucid communication, I'll give you this visual info to elaborate:-
EECIV was devised to track and trace reference voltage input as analogue to digital
From another sage like JR above, this is from a dude from Indiana ripped frkm FordSix. Its got the same economy of words that J.R. has, gained no doubt by years of experience being " kludged" by the nesecitiy of actually knowing by experience how things work.
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