Question on timing my second engine of the year? - Competition Diesel.Com

pick017 · 08-31-2014, 08:45 AM

Hi I've got a few questions for you guys. First off this is what I have, 12v with mahle 286110 pistons flycut .150. The injectors are 155° ih bodies 5x20 single large feed bar set at 300. I have NE injection 13mm pump with .093 lines. The truck is a dedicated 2.6 truck. Soo is there a formula to figure out how much timing I can run before it melts down? I'm at 34° now and it doesn't seem to have the power it should. Any help would be greatly appreciated.

Macktruckdriver · 08-31-2014, 10:01 AM

Start backing your timing down and see if you get more power. More doesn't = more power.

pick017 · 08-31-2014, 10:10 AM

That's kinda what I was thinking too. I heard that I shouldn't go over 28° with these injectors, but then I was also told I should run at least 36°.

turboram · 08-31-2014, 10:29 AM

Too much timing will make it pull down on end of track. Any vids to look at?

pick017 · 08-31-2014, 10:43 AM

Hi nick it zach (ripcord) can't get my video s to up load

turboram · 08-31-2014, 10:48 AM

I thought that was you . Back off to 30° and try it

turboram · 08-31-2014, 10:49 AM

155° don't need a ton of timing

ComnRailPwr · 08-31-2014, 11:20 AM

Im no help but I too would like to know the formula for figuring out when I start to spray outside the bowl.

turboram · 08-31-2014, 11:29 AM

^^^^^that all depends on spray angle , piston bowl, stroke ,rod length , gasket thickness, and other things.

97rada · 08-31-2014, 11:44 AM

I know from a few people that are very knowledgable, that making power doesn't always have to mean spraying in the bowl. Can actually make more power outside it.

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DISTURBED · 08-31-2014, 11:59 AM

Rule of thumb is on a stock engine 28* is spraying on top of the piston. I've run a lot more then that and made good power on 286110 pistons. Most like it up around 40*

madmikeismad · 08-31-2014, 08:50 PM

Quote:

Originally Posted by 97rada

I know from a few people that are very knowledgable, that making power doesn't always have to mean spraying in the bowl. Can actually make more power outside it.

Sent from my iPhone using Tapatalk

Not necessarily making more, just because you're outside the bowl. Spraying outside is just accepted so you can run more timing/rpm. Right? Spraying inside is more efficient, but will limit you.

97rada · 08-31-2014, 09:25 PM

I was not educated on the specifics as to why. I was just told you can make more outside.

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pick017 · 09-01-2014, 03:08 PM

Ok well I tried 28° and lost 600rpms. It didn't seem to run as well as it did at 34°. So has anyone ran higher than that with any luck? I'm just don't want to burn another one up.

08-31-2014, 08:45 AM	#1
pick017 Name: pick017 Title: ohio sled puller Status: Not Here Join Date: Mar 2009 Location: ohio Member`s Gallery Posts: 457	Question on timing my second engine of the year? Hi I've got a few questions for you guys. First off this is what I have, 12v with mahle 286110 pistons flycut .150. The injectors are 155° ih bodies 5x20 single large feed bar set at 300. I have NE injection 13mm pump with .093 lines. The truck is a dedicated 2.6 truck. Soo is there a formula to figure out how much timing I can run before it melts down? I'm at 34° now and it doesn't seem to have the power it should. Any help would be greatly appreciated.

08-31-2014, 10:29 AM	#4
turboram Name: turboram Title: spinny shiny things Status: Not Here Join Date: Aug 2012 Location: oh Member`s Gallery Posts: 646	Too much timing will make it pull down on end of track. Any vids to look at? __________________ 70 dodge powerwagon 3" lps puller "Frank"

08-31-2014, 10:48 AM	#6
turboram Name: turboram Title: spinny shiny things Status: Not Here Join Date: Aug 2012 Location: oh Member`s Gallery Posts: 646	I thought that was you . Back off to 30° and try it __________________ 70 dodge powerwagon 3" lps puller "Frank"

08-31-2014, 10:49 AM	#7
turboram Name: turboram Title: spinny shiny things Status: Not Here Join Date: Aug 2012 Location: oh Member`s Gallery Posts: 646	155° don't need a ton of timing __________________ 70 dodge powerwagon 3" lps puller "Frank"

08-31-2014, 11:29 AM	#9
turboram Name: turboram Title: spinny shiny things Status: Not Here Join Date: Aug 2012 Location: oh Member`s Gallery Posts: 646	^^^^^that all depends on spray angle , piston bowl, stroke ,rod length , gasket thickness, and other things. __________________ 70 dodge powerwagon 3" lps puller "Frank"

08-31-2014, 10:01 AM	#2
Macktruckdriver Name: Macktruckdriver Title: Too Much Time Status: Not Here Join Date: Feb 2008 Location: Allendale, MI Member`s Gallery Posts: 4,358	Start backing your timing down and see if you get more power. More doesn't = more power.

08-31-2014, 10:10 AM	#3
pick017 Name: pick017 Title: ohio sled puller Status: Not Here Join Date: Mar 2009 Location: ohio Member`s Gallery Posts: 457	That's kinda what I was thinking too. I heard that I shouldn't go over 28° with these injectors, but then I was also told I should run at least 36°.

08-31-2014, 10:43 AM	#5
pick017 Name: pick017 Title: ohio sled puller Status: Not Here Join Date: Mar 2009 Location: ohio Member`s Gallery Posts: 457	Hi nick it zach (ripcord) can't get my video s to up load

08-31-2014, 11:20 AM	#8
ComnRailPwr Name: ComnRailPwr Title: Too Much Time Status: Not Here Join Date: Jun 2009 Location: Stoutsville , OH Member`s Gallery Posts: 3,293	Im no help but I too would like to know the formula for figuring out when I start to spray outside the bowl.

08-31-2014, 11:44 AM	#10
97rada Name: 97rada Title: Too Much Time Status: Not Here Join Date: Feb 2008 Member`s Gallery Posts: 5,410	I know from a few people that are very knowledgable, that making power doesn't always have to mean spraying in the bowl. Can actually make more power outside it. Sent from my iPhone using Tapatalk __________________ Austin tow truck- 14-3500 with tuning toy truck -94 rclb auto- 5.2x with a lot left. Shooting for 4s Any intelligent fool can make things bigger and more complex...it takes a touch of genius- and alot of courage to move in the opposite direction.

08-31-2014, 11:59 AM	#11
DISTURBED Name: DISTURBED Title: YEA WE RIDE THE SHORT BUS Status: Not Here Join Date: Nov 2007 Location: Winchester, Va Member`s Gallery Posts: 6,417	Rule of thumb is on a stock engine 28* is spraying on top of the piston. I've run a lot more then that and made good power on 286110 pistons. Most like it up around 40* __________________ Thanks, Jeremy 01 CTD Retired sled puller, dedicated "Twin Turbo" tow rig 96 CTD "TOO" Disturbed 3.0 - Built by Disturbed Diesel Performance 96 CTD "The Sickness" 2.6/2.8- Built by Disturbed Diesel Performance Last edited by DISTURBED; 08-31-2014 at 12:01 PM.

08-31-2014, 09:25 PM	#13
97rada Name: 97rada Title: Too Much Time Status: Not Here Join Date: Feb 2008 Member`s Gallery Posts: 5,410	I was not educated on the specifics as to why. I was just told you can make more outside. Sent from my iPhone using Tapatalk __________________ Austin tow truck- 14-3500 with tuning toy truck -94 rclb auto- 5.2x with a lot left. Shooting for 4s Any intelligent fool can make things bigger and more complex...it takes a touch of genius- and alot of courage to move in the opposite direction.

09-01-2014, 03:08 PM	#14
pick017 Name: pick017 Title: ohio sled puller Status: Not Here Join Date: Mar 2009 Location: ohio Member`s Gallery Posts: 457	Ok well I tried 28° and lost 600rpms. It didn't seem to run as well as it did at 34°. So has anyone ran higher than that with any luck? I'm just don't want to burn another one up.