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Angry & can't do it anymore, serious iQuad timing issues

Posted

So for how ever long I've had my back to going normally, I cannot get my timing and everything thing else figured out. I been talking, chatting with @Mopar1973Man for quite a bit over the past month plus and give him all the credit for getting me thus far, however I figured asking additional input wouldnt hurt. 

 

My egt's are through the roof! 800-900* cruising 65 mph. Slight hill or Itty bitty incline 1100*. Lord help me if I wanna pass or just even getting up to speed 1500* 

Oil and coolant always the same 195* give or take. Oil should be cooler. Engine load now seems to be 19-20 going 65 mph. 

I think this is what I was running yesterday and this morning. I have tweaked it a bit since so...

I believe timing was 14,18,22,25,26 or some where close lol, it's been all-over the place lately; it doesn't matter it's all wrong and I'm just to dumb to fix this. Please be gentle.... 

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I seriously need all the help I can get. I'm losing my mind. I want a nice daily that has a little pep than stock, just to start. I can't get there... sig is up to date, (new IJ pump not tapped), turbo and injectors billing the big contributing factors here. I will admit that I will have to compromise something for something and big injectors don't usually help egts and mpg but come on 900-1500* and 11 mpg ??? What gives?

Oh and I really don't get any black smoke for what it is **testing purposes only**

That will later become a inevitable side effect when a race tune is born.

 

Idea i had.....I'd be open to doing a screen share with iQuad while driving...

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  • Author

Rockers and push rods should be here Tues. Still haven't found my dang Chiltons manual lol... thanks for yalls input, sometimes I'm pretty indecisive... 

 

I doubt it, but I wonder if the new setup and a good lash adjustment will help with flow and egts? 

 

Oh, how long do yall usualy run new valvetrain stuff before rechecking lash? Day or two? = 2 trips to work and back ~ 120 miles/ 2hrs~

  • Owner

You could just check it in a week or so. 

 

Remember...

 

Intake set to 0.010 (0.006 to 0.015 allowed)

Exhaust set to 0.020 (0.015 to 0.030 allowed)

 

So quick check is pretty fast.

Didnt know lash could go that tight. Previous time i did lash was .008 intake and .018 exhaust as that was my understanding of what i thought were the limits..

  • Owner

If you look at the Dodge FSM it does list out lash limits for the 24V engines. You should see 3rd Gen lash numbers. IIRC it's 0.026 for exhaust.

  • Staff

From FSM:  intake valve lash .006"-.015"   

                   exhaust valve lash .015"-.030"

 

Note: If measured valve lash falls within these specifications, no adjustment/reset is necessary. 

  • Author

Poll:

Being .010 and .020 is right in the middle and the norm, with that big gap where would you prefer to have it set at and why? If not the goto normal lash 10/20...

 

Middle, little tighter, little looser?

  • Owner

Be careful going too tight you could burn a valve or seat. I did 8 and 18 before and caused stalling issues. Injectors might have a say too depending on pop pressure too.

Be careful going too tight you could burn a valve or seat. I did 8 and 18 before and caused stalling issues. Injectors might have a say too depending on pop pressure too.

  • Author

Guess Ill just stay with the tried and true 10/20.

 

My new rockers didn't come with the little black plastic retainer deals. Should I just take the old ones off and swap? I know they matter but would I be safe not using them? 

On 6/5/2022 at 5:26 PM, Stanley said:

Middle, little tighter, little looser?

The one time I set my valves I went with a "loose" .008/.018 (meaning it may have been closer to 9/19 as the last thing I wanted was to be too tight) and so far as I know I have no problems.  My engine had around 275k miles at the time, so I made a wild guess that my cam may have slight wear, so didn't want to give up any lift, and it may bring the overlap back into normal.  Now I wonder if since I really spend most of my time in the lower RPM range if I should have gone with the 10/20 or slightly looser to actually reduce overlap.  Without running it on a dyno, I'm guessing I'll never know.

Of course I'm running stock injectors and cam, auto transmission, 3.55 gears, and a HE351W, so my truck really isn't a good comparison for yours in any way!

Mine are a little on the tight end but that was 50k miles or so ago. It does seem to rev slightly happier like that. Main thing is the valve stems grow with heat so there has to be a few thousands of slack when hot or else the valve won't seat all the way and the edge of the valve and seat will overheat. 

  • Author

Here's some pics of the new stuff. 

@dieselautopower rockers and push rods.

New vs old... 

Didn't get a response in the black plastic retainers. What's yall take? 

 

 

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Edit:

 

Well you can not remove the black plastic retainers, since they are pressed in there's no way to remove and reinstall them in the new. 

I guess fyi if no one knew...16546416019326106836408631744434.jpg.261bebcd3ffff776cf90358b8e53d570.jpg

  • Author

@IBMobile yes I deed! Copious amounts always! 

 

  • Author

Checked valve lash twice, change engine oil and trans oil, done a apps reset, fired it up and its sounds great so far. Revs seems to have more pep/quicker. 

Might just be in my head though lol.

I'll have to wait to drive it, had a few adult beverages while working, so no driving for me.

1 hour ago, Silverwolf2691 said:

Far as im aware the sets you got is the 6.7 design. I think @Dieselfuture had that style installed..

That's cool! I didn't know it was the newer design...

  • Author

Well the test drive went OK. Didn't go very far lol, fuel is to damn expensive to test drive haha. 

Parked the truck, mowed (7 acres) then moved truck back later, didn't notice it at the time but the starter stuck ON when I started it and I didnt noticed it till when I tried to shut it off... frantically ran to shop and grabbed 1/2 and ran like raged wildebeest back to the truck to disconnect batteries... 

It's a new starter from oriellys, not the best but it will work till my I rebuild oem one. 

So my guess is the new starter went bad quickly. I don't think it's ignition switch, I will check the starter relay though... 

 

What a day...

  • Owner
29 minutes ago, Threadzy said:

@Mopar1973Man what was your average speed? 

Speed limit. Interstate I ran 70MPH. Other highways ranged 60 to 65 MPH.

 

Again I can pull good fuel mileage. No oversized tires, no lift kits, proper final ratio, and just the Quadzilla to manage timing and fuel. Still running my HX35W turbo and 150 injectors average EGTs was about 500 to 550 most of the trip.

 

In Seattle I had turn down to level 2 the concrete highways were slick I could break the rear tire loose just squeezing light on the throttle. When it was really rainy I ran 4WD to reduce the slipping. No CAD axle either.

 

Oh diesel was 6.279 when I got fuel. The whole trip cost 250 in fuel. This is round trip. Started in Lewiston ID for 100 and went all the way to Everett WA and back to Seattle to fill for 150. Then came home.

I sure like my truck, but last week's 1300 miles made me really appreciate my '05 VW Passat TDI getting 42 MPG. Full A/C use, highway construction slowdowns, and some +75 MPH sections.

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.