hoping to hear from some users that understand all these numbers better than i do is it better to upload in excel form or a csv file format here is a few of the drives i have logged

 

Is there something specific the vehicle is doing your concerned about?

 

all im being told is that im maxed out lean on passenger side

latest changes i adjusted the valves this morning put new o2s on both sides new fuel filter and oil change before this latest log just an idle in the garage but im so nervous about everything with this motor like a nervous nancy meeting bite my nails betsy.

 

You need to provide more details about the car. Why are you adjusting the valves? Who is telling you it's lean? Is the SES light on? Have you scanned it for codes? Have you made significant changes lately?

What are you using to log it? I don't see engine temp logged.....nevermind...I'm blind...it's under ECT.

Bank 1 LTFT is showing 14% while Bank 2 LTFT is only 4.7%. Maxed out on these numbers is 25% on OBDII cars. STFT on both banks look under control. Driver's side is the one showing on the high side in your log.

 

There have been ongoing problems, covered in these threads:

https://www.camaroz28.com/forums/fue...ebuild-889304/

https://www.camaroz28.com/forums/lt1...e-test-889319/

With the earlier valve adjustment problems, need more into on the modifications.

Do you actually have 1.7X Pro Magnum full roller rockers? Not sure I ever heard of them before.

What are the cam specs?

Did you correctly measure the required push rod length?

Are you sure you have the correct valve spring height, and the springs are not binding?

An aside - what are you using to generate the data logs? Very difficult to use with all those time stamps and the multiple lines of column headers. Terrible formatting, I don't want too get into analyzing data logs, but I did provide a writeup on how to interpret that data. But the organization of these logs would make it difficult for me to do an analysis without massive reformatting.

 

I didn't see him list a cam as one of the mods. If he didn't change the cam, my advice would be the following....

• Get the stock tune back in it along with a good set of stock injectors.
• Make sure you have someone adjust the valves who knows how to do it.

Myself, I prefer to adjust the valves with the intake off so I can watch the lifters on the cam. This way, the pushrod lifter plunger compression can't fool you with the lifters position on the cam. 1/2 turn preload is what I used at zero lash. Zero lash is simply screwing the valve lock to touch the top of the rocker after positioning the crank/cam in the correct position. Make sure to not move the lock after adding the preload when tightening the allen screw to lock it in position. I think I used around 30lb-ft torque on the allen to make sure it doesn't move.

 

Ported heads and increased displacement need a tune. But Solomon? Has he responded?

Didn't see a cam either, but a stock cam with 1.7X rockers seems odd with the rest of the mods.

 

Extremely sorry for all the confusion it is Fresh motor .040 over with 30 miles on it Solomon is the one saying extremely lean on bank 2 at random times I would love to update my signature but for some reason I cannot add any more information to my signature it keeps telling me no more than four lines allowed comp cam cc503 cam. no there not 1.7 rockers they are 1.6 it was a typo on my behalf and now I cannot change it the website instantly tells me no more than four lines if i delete the 7 and type a 6
im using Wester‘s garage ECM Stanmaster to the data log for Solomon

 

Is this the log you sent to Solomon? I'm not seeing the fuel trims go overly rich in the log you posted. At idle, they look better than my PCMforLess tune. There is one point where it looks like you blipped the throttle. Bank 1 went 18% and bank 2 pegged to 25%. I'm not going to panic on a PCM that's relearning things and then gets a throttle blip.

I do agree with Injuneer that ported heads and a displacement change needs a tune. I was thinking more along the lines from a troubleshooting angle in my prior post and didn't mention it, but should have.

I don't have ported heads, but I can tell you from personal experience that a CC503 with 1.6 roller rockers will idle and run fine on the stock tune with the misfires codes disabled. Even without the misfire codes disabled it runs fine....but will set the SES light for a misfire at various times. Getting the injector settings right will make a big difference in how the LT fuel trims react at idle. I went from +10%/+23%, at idle, on a PCMforLess tune to -10/+10 by calculating out the right injector settings via Ford's datasheet for the FMS 30lb units that I have on my '96. The prior hinges on getting the correct injector characterization data from the manufacturer.....or from someone who can properly characterize the injectors. Your 14% on the driver's side is far better that what I ran for years in the PCMforless tune.

As an FYI, my machine is a litte rich on startup. Nothing bad, but nothing to send the PCM readings nuts. I'm using a tweaked stock VE table with a stock spark table. I have not put it on a dyno to recal the MAF and get the VE tables right.....and I still need to do that. However, it runs stock like except for some off idle bucking at around 5mph on very light throttle tip in. It runs best when in closed loop, so that does let me know my VE table is off. It's not bad in open loop, but does buck more on off idle tip in when stone cold.

My understanding is that a CC503 will run okay on stock 24lb injectors although that may be pushing what they can safely do. So for troubleshooting, the less you change, the better it is for isolating problems. If you have known good stock injectors you can use, that also means you can eliminate the injector settings in the tune for being a problem by using the stock injector settings.

For you to go 0.040 over, what problems did the engine have prior to doing all this work to it?

 

For now just list all the details you can think of in a post.

What is the displacement - 0.040 is OK, but what is the stroke (3.75” ?)?

Ported stock heads - Any idea what they flow? Who ported them?

Any idea how much HP? 42 #/HR seems like overkill. They'll support 600 HP at the flywheel. 36 would be adequate for 500 HP, and easier for the PCM to turn down to small pulse widths at idle.

What ever came out of the leaky throttle body smoke test? Air bypassing the throttle body via vacuum leaks would typically cause both sides to run lean and elevate the LTFT’s equally. Things that can cause a false lean condition on one side would include exhaust leaks before the O2 sensors, misfires, incorrect valve adjustment.

Did the valve adjustment eliminate the “dead cylinders” problem?

Scan software is “ECM Pro Scan”. Slow scan rate, related data spread at different end of the table, showing data in both metric and imperial units, while time stamp can be useful, it's adding excessive columns to an analysis where time stamps aren’t needed. Not sure why there are 4 or 5 repetitious rows of column headers. Can it be formatted to change the order of the columns, delete the time stamps and select units system for each parameter, e.g imperial for temperatures, metric for MAP, MAF?

 

Yes, very true on cleaning up the data parameters logged and maybe only logging the critical ones needed. Some of the slowness is SAE values and OBDII PCMs. I've never seen OBDII PCM scanners that have the "blazing" update speeds of the OBDI PCMs. When I first saw a OBDI scan log, I could not believe how much faster the OBDI PCMs are with the data values and thus how much higher the data resolution. I'm, quite frankly, jealous of the data resolution of the OBDI PCMs. I've also been told that SAE rates are the low resolution data values a scanner can display and that PIDS without "SAE" should be higher resolution....but some scanners don't give you the option of which to choose.

 

thank you so much for any and all help and sorry for my lack of intelligence at all of this stuff!!!
displacement is .040 and yes stroke is 3.75"
ported stock heads with manley street flow valves 1.5" and 1.94" American Machine In Salt Lake City did the port job no idea of what they are flowing
i always wanted to be the big HP guy so i believe the 42lb was in my head because of shooting for the stars and if i hit 500 hp great and if we hit 600 even better but as of now i just want my car back i started this project in 04 and then life happened and kids came and the $ went faster than the car.
leaky throtttle body still on the car but i have heard so many different opinions that im probably going to buy a 58mm but not really sure what to even look at with the bad taste in my mouth of bbk.
valve adjustment did fix dead cylinders and seems to be running way more smooth and responsive
ecm pro scan im not a fan of personally but its what i have on hand and not really that friendly i just barely figured out how to export it to excel and havent been able to format it before the export and i totally understand what you mean about way to much data in one worksheet ill see what i can do about fine tuning my excel capabilities
i got my signature to update also WOOOHOOO

thanks for all your help fred

 

figured it out on the format seeee if this attatchment looks better

 

What's the elevation where you live? The 86.35 kPa barometer would indicate you are at about 2,500-ft above sea level. I didn't see a MAP column (or did I miss it)? Also don't see injector pulse widths.

As noted above, Bank 1 is the problem, adding 14.1% extra fuel in the idle cell (16). Bank 2 is only adding 4.5%. To me, anything in the +/-5% range is not generally a problem. But your issue is definitely on the driver side, at least at idle.

You're not going to hit 500 HP with the small valves in those heads and a CC 503. You don't need anything more than a 52mm TB at this point. I'm still not clear on where/how/why the BBK was leaking during the smoke test. There are gaskets on the top and bottom plates, and a foam seal around the shaft on the TP sensor side. The shop that built my engine laughed at my 58mm TB, showing me on the engine dyno that it flowed all the air my 500 HP (flywheel) HP engine needed at about 75% open.

 

This made me lol, even though I've seen you mention it before 😄