Im back w/ more bad news, broken MMR Motor

[Hangman]

btw this car made great power and ran a great number for what it was, eventually motor was hurt in one hole.

thanks for the insight, so basically the higher the filter value, the graph removes smaller fluctuations in data to show a more linear and plane view?

Where as a smaller filter value can show all the smaller changes happening in the power band with the same information given?

 

[98 Saleen Cobra]

Yes. Similar to Smoothing corrections. There is 1-5 there too.. Most do a smoothing of 5 so it looks super nice, but don't be fooled lol

 

[jmstekguy]

thanks for the insight, so basically the higher the filter value, the graph removes smaller fluctuations in data to show a more linear and plane view?

Where as a smaller filter value can show all the smaller changes happening in the power band with the same information given?

Correct, it will blend the highs and lows together, taking imperfections out of the graph, I have seen this numerous times. As per your saying the ptw clearance caused all this I would have to say no, you wouldn't have got 600 miles on the motor and then made it to the tuners. Spark knock with a coated piston ( although I'm not sure with mmrs 2500 coating) will rarely show on the piston rather it will rattle the piston in the bore and cause damage, also I'd like to see the raw data of the Dyno sheet, an overly rich and undertimed motor will make a retarded amount of heat in the piston and expand a piston quite abit ( unsure of mmrs coating tho). As an example...my 5.4dohc 98mm turbo car runs 20psi and a Manley piston and I run a .003" ptw and have made well over 1100 rwhp with no failures, but I have had a failure similar to yours ( scuffing on the skirt) but it because I had too rich of a mixture and undertimed (14degrees) ... Being safe was actually the direct opposite, now that same tuneup is 12:1-and 22degrees, huge difference. On good gas obviously

I don't have a horse in this race, but you have repeatedly pushed the blame on mmr, yet the other party's Involved are free and clear, do you have a copy of your tune? If its diablo sport I wouldn't mind lookin at it, better yet, data logs of the tuning session and obviously the unfiltered Dyno sheet.

I feel bad that your caught in the middle, I hope you get this figured out. Let me know if you need any help.

 

[Brutal Metal]

i grabbed this off another thread you had posted in, and you may want to as the tuner why the filter value is at 99 (max) even at that filter value that afr is wonky...not trying to cause and drama, as them for the same print out with the standard 6-15 filter value, it may scare you...[/QUOTE]
You telling me a high 10 A/F is gonna cause that damage? NOW it's the tuners fault again according to you?

 

[jmstekguy]

i grabbed this off another thread you had posted in, and you may want to as the tuner why the filter value is at 99 (max) even at that filter value that afr is wonky...not trying to cause and drama, as them for the same print out with the standard 6-15 filter value, it may scare you...

You telling me a high 10 A/F is gonna cause that damage? NOW it's the tuners fault again according to you?[/QUOTE]

no a 10.85:1 afr wont, but very low timing and that afr can, and im not saying its anyones fault. i just asked the op to see if he can get the datalogs of the runs leading up to the tune (mustang dyno software will save every run and the tuner would have his logs for reference obviously to tune from) you dont just assume commanded was 18.5 and be done with it... see if he can rule out the tune, diagnosis is process of elimination, simple. if hes having someone check the build, why not have someone check the tune??? do you see in the graphs i posted, the one with no filter has some pre-ignition/det. in the middle of the run (3200-4400), shows in torque and the afrs, but when filtered its not there. the tune may have commanded 18.5 degrees of timing in the tuneup, but his datalogs would confirm that there was no iat correction or other modifiers causing it to drop the timing.

like i said before, just trying to help the OP, not trying to stir shit. i have tuned 3 650rwp+ mmr motors and never had a problem with any, i guess i was lucky...

 

[jmstekguy]

http://www.k20a.org/pacman/p2x.jpg

this guy has a good read...

http://www.k20a.org/forum/showthread.php?t=88290

 

[03kevo]

I think he meant more about Posi's recent fall from grace after a few denied warranties, not to mention the whole torque plate/lightened rotor debacles, which were certainly a mess.

NO WAY!!! Never heard POSI denying anybody warranty.

 

[SecondhandSnake]

umm pretty sure it was rip posi bc now all people have left is steig...POSI shut it down to spend more time with his family. Steig is the one catching hell

Whoops. Guess I had it backwards.

 

[96vertsnake]

Edited at the request of the OP

 

[sc4.6]

Just curious, what is the name of the person at torq that did the tuning?

 

[96vertsnake]

Just curious, what is the name of the person at torq that did the tuning?

Really?

What is the name of the guy that built the motor at MMR?

 

[sc4.6]

Really?

What is the name of the guy that built the motor at MMR?

I don't see what is wrong with my question. If the op isn't comfortable posting it in the thread he can always pm me. There is a reason I ask and for all you know it isn't bad.

 

[TwinTurbo4vGT]

**Edited by moderator, you should know better.

 

[Brutal Metal]

^^ They did set a record last week though!!

 

[STAMPEDE3]

Some of you need to watch your tone and wording.
Remember, Not what you say but how you say it.



And,

Do they have the log of the pull when the motor actually broke?
And the one before it?

 

[96vertsnake]

My son (OP) has decided in fairness to take the conclusions from the third party along with photos and video indicating the areas in question directly to Mark at MMR before posting it here.

 

[jmstekguy]

My son (OP) has decided in fairness to take the conclusions from the third party along with photos and video indicating the areas in question directly to Mark at MMR before posting it here.

is he (OP) also going to provide (in fairness) mmr the data for the tuning as well? because in a previous statement it was said the bores were too tight, and just recently posted that they were .006"...seems only fair, after all these shenanigans, ill be surprised they would even want to help, just sayin...cant wait to see the end result of this all.

 

[gt347mustang]

Do they have the log of the pull when the motor actually broke?
And the one before it?

This...

Did I see the ptw was 0.006?

 

[STAMPEDE3]

This...

Did I see the ptw was 0.006?

Yes you did, before he decided to edit the post.

 

[gt347mustang]

Yes you did, before he decided to edit the post.