Jump to content
  • Welcome To Mopar1973Man.Com

    We can see that your guest and been lurking about. When you register on the Mopar1973Man.Com site you'll be able to interact with all the other members. This is the most friendliest Cummins forum you'll ever join. Take the time right now and  REGISTER  on the Mopar1973Man.Com this will open up many more options and functions on the website. Everyone is very friendly and helpful just ask questions and everyone will help you out the best they can. 

Recommended Posts

I’ve gone through the tuning process, and I like my boost level fueling curve.  I also think I Ike my pump tap parameters, but I’m not sure my stock clutch can handle much wiretap at all.  But all of my timing parameters are set to Mike’s economy settings.  I’m going to lose sleep about not having ARP studs.  I don’t really understand the timing settings, so I need them explained (dummy style) or I need to know how not to exceed recommendations for stock head studs.  I’d like to get studs, but I’ve got to get on the road hauling my 7k pound camper here soon and don’t have the time or cash.  I’ve done a lot of reading, but I just can’t quite get my head around the technical knowledge of this community yet. Thanks. 

Link to post
Share on other sites

I guess I'll have to hitch on and find out.  I read somewhere that 

16 18 22 24 26

was recommended for RPM Max timing without studs.  So I assume when I do the test, I'm looking for numbers to drop from 18ish down to 16ish?  

Link to post
Share on other sites
  • Administrator

That's a blanket a-ok statement to cya.

 

  However keep in mind that the edge will command 25* by 2400 r and 30* by 3k

 

 

You just don't want a high load on the truck, high tps input in the sub 2k area and 20*+ of timing.

 

  • Like 1
Link to post
Share on other sites
  • Administrator

I was squeezing a bit higher above the 20 and 2,000 RPM's but I'm going to say which might of increase my chance of head gasket failure. I think it didn't help the stock head gasket and between that and head curl that most heads will get after about 300k miles of heat and cool cycles too. Being I'm already running 425 ARP studs I'm good to roll without any thought now. Most all my tunes start out at 14* or 15* and the only thing that pulls the timing up more is cruise timing but low low at 20 to 25% engine load. At a +4.5 step it puts my 2,000 RPM band 19.5* but now consider load base timing of 1* that makes it 18.5* just off of cruise timing where the load starts to climb. Still runs better at 23 to 24* cruise timing at 2k. Still got 7% engine load at idle. Injectors are starting to wear about 50% life.

Link to post
Share on other sites
  • Administrator
12 hours ago, Unreal Summit said:

I'll give that a try and see if it helps my mpg some. What's the most y'all would get up to in cruise timing?

depends on rpm  try 18-19* at 65 and see what mpg do then make your tune bump down timing when you step on it and you can add a bit more timing if you want.  20* was the magic number for my truck but I has really big injectors.   

Link to post
Share on other sites
  • Administrator

That the weird part. Like I followed @Me78569 guidance and got the 7 x 0.010 and popped to 3320 bar. Then my tune was different than what my truck liked. There is too many factors to even go over that affect why one truck likes more timing but the other likes less timing. Basically what I try to do is work more with the first 2 band (1,500 and 2,000) in timing. Now if you find those two that the truck performs the best at low engine loads then you can build the rest from it. Most people used the 1,500 to 2,000 bands the most so if you focus there to get started you'll find the right timing sooner. Now you know you going to need like 18* to 19* in the 2,000  RPM slider and then you'll need about a +2 to cruise timing that gives you a 20* at cruise. 

Link to post
Share on other sites
On 7/25/2020 at 11:35 AM, Me78569 said:

You just don't want a high load on the truck, high tps input in the sub 2k area and 20*+ of timing

With relatively fresh stock injectors, 3.55 gears and HY35, is 17* at 1900ish RPM on a slight hill extremely conservative? I see 20* going down hill, that's about it. I haven't tapped the pump so just utilize levels 2 and 3 on Quad.

 

I think I'm running one of your tow tunes for stock trucks that I bought.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



×
×
  • Create New...