Slant *        6        Forum
Home Home Home
The Place to Go for Slant Six Info!
Click here to help support the Slant Six Forum!
It is currently Thu Mar 28, 2024 5:06 am

All times are UTC-07:00




Post new topic  Reply to topic  [ 43 posts ]  Go to page Previous 1 2 3
Author Message
 Post subject:
PostPosted: Fri May 30, 2014 2:03 pm 
Offline
Board Sponsor
User avatar

Joined: Fri Nov 01, 2002 8:20 pm
Posts: 1603
Location: Oxford, Georgia
Car Model:
kcuf wrote:

only issue i have is that the usb to serial adapter i got from diyautotune wont function while the car is running with the coils,
works fine with engine off.


Running non-resistor plugs by any chance? They'll knock it offline as soon as you get spark.

_________________
"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair


Top
   
 Post subject:
PostPosted: Sat May 31, 2014 2:56 am 
Offline
4 BBL ''Hyper-Pak''

Joined: Wed Oct 30, 2013 4:01 am
Posts: 39
Location: Australia
Car Model:
i did go and reply over at msextra today, but yes, turns out i do have non resistor plugs, will have to get some with the R during the week,

i am back on the serial path now, i want to just change 1 thing at a time until i get it right, i "may" re-install the usb adapter again later, but for now i'll keep it out of the scenario now that i have a loaner laptop with serial.

one other thing i should look at doing as a test is adding more grounds, i have 1x 0.75mm sq cable straight to the battery, as i am still in testing phase, the MS is sitting outside the car on a chair, all wires running straight out over the front etc, VR sensor wire is shielded, 12v wire is the same 0.75mm sq cable, (18 AWG is probably a better number for you),
12v wire is straight off the batt with a 3a blade fuse, coil power feed is straight off batt with a 15a blade fuse, and a manual toggle switch (very very testing mode ;) )

after i try the plugs, i'll increase the grounding, when final install came around i was planning to run several grounds to batt, one or 2 to where the case mounts, 2 or 3 to the engine block, etc.


Top
   
 Post subject:
PostPosted: Mon Jun 02, 2014 8:25 pm 
Offline
4 BBL ''Hyper-Pak''

Joined: Wed Oct 30, 2013 4:01 am
Posts: 39
Location: Australia
Car Model:
resistor plugs = problem solved (so far), thanks Matt, working on a coil bracket now, lets see if having them perma mounted will change the situation.


Top
   
 Post subject:
PostPosted: Thu Jun 26, 2014 1:38 pm 
Offline
Supercharged

Joined: Sun Jun 04, 2006 4:53 pm
Posts: 4295
Location: Gaithersburg MD
Car Model:
Mine worked better with all the grounds to a ground bus on the firewall. Stay away from the engine block regardless of what you read. I was getting interference from the starter motor through the block. It would read 3000 rpm during crank, and flood, and not start. Moving grounds away from block eliminated that problem.

Sam

_________________
Image


Top
   
 Post subject:
PostPosted: Sun Jun 29, 2014 5:38 am 
Offline
4 BBL ''Hyper-Pak''

Joined: Wed Oct 30, 2013 4:01 am
Posts: 39
Location: Australia
Car Model:
so far mine seems fine with 2 batt grounds, 2 to engine, and 2 where the MS is mounted, all sensor grounds go back to the DB37, just need to get rid of my carby now!

have made some progress, rail is made, half way through making the jig to hold all the bungs to get them all level and in line etc, should have the manifold modded by the end of next weekend,


Top
   
 Post subject:
PostPosted: Tue Jul 22, 2014 2:32 pm 
Offline
Supercharged

Joined: Sun Jun 04, 2006 4:53 pm
Posts: 4295
Location: Gaithersburg MD
Car Model:
Another note, all sensor GROUNDS on my BMW use shielded cable with shield grounded. Also, all engine management electrical has its own box on fender opposite of all other fuses.

On Dart I put ferrite chokes on all all wires that could emit interference such as alternator output. I also went back to resistance plug wires. This issue drove me nuts for awhile.

Sam

_________________
Image


Top
   
 Post subject:
PostPosted: Tue Apr 12, 2016 12:20 pm 
Offline
EFI Slant 6

Joined: Thu Jun 04, 2015 6:19 pm
Posts: 317
Location: Florida
Car Model:
I don't see any followup on the reluctor notched damper solution. Did it work, fly apart, slip, break the crank, etc. ? I also would be hesitant to try, as much as I like the solution.

On the same issue, is there any extra room/wasted space to be found inside the stamped steel timing chain cover? I'd have no problem re configuring it, in order to allow the mounting of a reluctor wheel on the back side, with the same idea as another member did with the alum inside the backside damper adapter, That solution on mine with the romac damper, looks awfully tight/not doable, unless I gain some space with a modified timing cover. I'm just guessing, and try to develop a plan on a still running motor.


Top
   
 Post subject:
PostPosted: Thu Jul 21, 2016 7:42 am 
Offline
TBI Slant 6
User avatar

Joined: Tue Sep 18, 2012 12:02 pm
Posts: 126
Location: Lincoln, NE
Car Model:
If you're going inside the timing cover, would you be better off on the camshaft pulley? You'd be on actual timing events then and could fire "on time" as opposed to wasted spark EDIS.

_________________
Brooks

'72 Dart Swinger
'71 Plymouth 'Cuda

Cheap, Fast, Reliable
Pick 2!


Top
   
 Post subject:
PostPosted: Fri Jul 22, 2016 9:16 am 
Offline
Board Sponsor
User avatar

Joined: Fri Nov 01, 2002 8:20 pm
Posts: 1603
Location: Oxford, Georgia
Car Model:
the_engineers wrote:
If you're going inside the timing cover, would you be better off on the camshaft pulley? You'd be on actual timing events then and could fire "on time" as opposed to wasted spark EDIS.


If you want full sequential, you're better off with a crank and cam trigger. Using the camshaft as a primary trigger lets any timing chain stretch reduce the accuracy.

_________________
"Mad Scientist" Matt Cramer

'66 Dart - turbocharged 225

My blog - Mad Scientist Matt's Lair


Top
   
 Post subject:
PostPosted: Wed Jul 27, 2016 8:35 am 
Offline
TBI Slant 6
User avatar

Joined: Tue Sep 18, 2012 12:02 pm
Posts: 126
Location: Lincoln, NE
Car Model:
How would you integrate cam AND crank triggers? Can you feed both signals to MS, or would you need to combine them first?

_________________
Brooks



'72 Dart Swinger

'71 Plymouth 'Cuda



Cheap, Fast, Reliable

Pick 2!


Top
   
 Post subject:
PostPosted: Thu Jul 28, 2016 9:04 am 
Offline
Board Sponsor
User avatar

Joined: Fri Nov 01, 2002 8:20 pm
Posts: 1603
Location: Oxford, Georgia
Car Model:
They're two separate signals.

_________________
"Mad Scientist" Matt Cramer

'66 Dart - turbocharged 225

My blog - Mad Scientist Matt's Lair


Top
   
 Post subject:
PostPosted: Thu Jul 28, 2016 12:51 pm 
Offline
TBI Slant 6
User avatar

Joined: Tue Sep 18, 2012 12:02 pm
Posts: 126
Location: Lincoln, NE
Car Model:
So, is it worth doing? For whatever reason, I like the idea of iterating a cam position sensor a lot more than firing every 360* of cam travel...

Am I fixating on the wrong thing?

_________________
Brooks



'72 Dart Swinger

'71 Plymouth 'Cuda



Cheap, Fast, Reliable

Pick 2!


Top
   
 Post subject:
PostPosted: Tue Aug 02, 2016 8:31 am 
Offline
Board Sponsor
User avatar

Joined: Fri Nov 01, 2002 8:20 pm
Posts: 1603
Location: Oxford, Georgia
Car Model:
The MegaSquirt uses the crank trigger as the main engine position, so there's not a functional difference in using the distributor trigger vs a cam sprocket mounted cam sensor. Whether the aesthetic difference is worth it is up to you.

_________________
"Mad Scientist" Matt Cramer

'66 Dart - turbocharged 225

My blog - Mad Scientist Matt's Lair


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 43 posts ]  Go to page Previous 1 2 3

All times are UTC-07:00


Who is online

Users browsing this forum: No registered users and 7 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited