Trying to figure out the cause of a motor failure. Could this map running either 13-14 psi or 10psi have caused a blown motor?

The rear rotor of this motor is reading 85psi on the rear rotor and ~104 on the front rotor. About 1600 miles on the motor with a large street port.

Other relevant mods include 1300 secondaries, Jspec turbos, Greddy FMIC, Greddy elbow, DP, MP, catback, HKS twin power.

I had a friend with a Datalogit extract the map to Excel. Just rename the file as .xls and you should be able to see everything.

Thanks for your time.

 

send me the dat file and ill let you know, there are many other adjustments that you have to check besides the ones included in the file you've included.
jodeny@hotmail.com
john

 

you got mail

Thanks very much John. Any feedback is appreciated.

I also uploaded the zuipped dat file here if anyone wants to take a look at that.

 

YES!

Split under full boost is fine.

N8 - N17 for P14 - P19 has too much timing (2 - 4 degrees) as compared to my currrent GT35R single almost stock port engine.

N8 - N15 for P17 - P18 and part of P19 has too much timing (1-4 degrees) as compared to the same engine when I ran non-seq stock twins and made 350rwhp at 15PSI boost.

A couple of us have discovered that with very modded engines, more timing has to be taken out for lower boost than you would expect.

 

Thanks Chuck. Does your statement apply irrespective of boost level run? In speaking with the motor builder and tuner, he says that he didn't tune for 10psi and that he tuned for 13-14psi levels. His statement seems bizarre to say the least...

 

The map is crap for the areas I mentioned!

I worked on my non-seq map over 4 years in all weather conditions and fuel mixes. It takes that type of experience to be able to tune even fairly.


You can tune only one area for safe power but all areas need to be at leaste safe even if not maximized for power.

Non rotary experinced tuners think only hgh rpm timing needs to be reduced because the typical 4 cycle ricer engine does not produce flat torque like our engines do. A Honda tuner freind even told me that most Honda engines do note need much timing changes down lower.

You got screwed. A new friend onf mine had a Honda shop do the same to him.

 

Actually, the tuning was done by an RX7 Specialist...

 

wow.....is the motor still under warranty?

 

Smoking joes?

 

No such thing on Long Island or especially in Queens.
John

 

No. This wasn't from Smokin Joe's. I sold that car a while back and am dealing with different car.

 

cewrx7r1 can you send me a copy of you dat, id love to see how My tunning compares

 

so whatever happened? motor still bad?

 

I'm still waiting *impatiently* for Jason from the RX7Store to get back to me on whether they are going to warranty the motor they built, broke-in and tuned...

 

That doesnt look like one of my timing maps. Was the car retuned after you got it?
To me the timing doesnt look like it will blow your motor considering you have a mild street port and stock twins, but I usually retard the timing a little more than that.
As I recall it was tuned for 13-15lbs of boost. It goes thru the 10lb range but I didnt tune it thru the entire RPM range at that boost.

Jason

 

Nope that was the map that came with the car.