Finishing NA 20b engine bay remake

[gmonsen]

Syed...  I was simply wondering if the fuel pressure regulator was acting up or too much pressure under certain circumstances or whatever.  The biggest thing is that it would seem that you are adding too much fuel somewhere on your maps and that should show up in your AFR\'s.  They should be running, say, 10.5-11:1 and I suspect somewhere, like idle, you are adding too much fuel.  Since your motor is fairly fresh, the tuner may have set a very rich AFR, like 9.5:1 to be safe (at least in his mind).  If that were right, its still the wrong thing for him to have done.  Even keeping it very rich to be sure it doesn\'t detonate, mapping that rich is not at all necessary.  

I would also ask whether, when you rebuilt the engine, you put in new seals and springs?  The only real issue on break in is bedding in the seals and they should be seated by now with 800 miles on it.  Do you have a dyno sheet with the afr\'s when it left the shop?

Gordon

[Mir]

Syed...  I was simply wondering if the fuel pressure regulator was acting up or too much pressure under certain circumstances or whatever.  The biggest thing is that it would seem that you are adding too much fuel somewhere on your maps and that should show up in your AFR\'s.  They should be running, say, 10.5-11:1 and I suspect somewhere, like idle, you are adding too much fuel.  Since your motor is fairly fresh, the tuner may have set a very rich AFR, like 9.5:1 to be safe (at least in his mind).  If that were right, its still the wrong thing for him to have done.  Even keeping it very rich to be sure it doesn\'t detonate, mapping that rich is not at all necessary.  

I would also ask whether, when you rebuilt the engine, you put in new seals and springs?  The only real issue on break in is bedding in the seals and they should be seated by now with 800 miles on it.  Do you have a dyno sheet with the afr\'s when it left the shop?

Gordon

Hi Gordon
thanx for ur reply. The engine was built with brand new parts!! Including housings and the rotors clearanced on top of the rotors was done! I don\'t have exact figures of the AFR, but I can get them! My turner and builder is the top man in the UK! He has built serval triple and quad rotors! His name is Pip of WGT! Very experience man!!

Let me know, if u want more info!!

The fuel pressure regulator is showing just above 40 psi! Or little Bit above....

[rx7boy]

Not from personal experience and not doubting Pips work as he is somewhat of a legend when it comes to the rotary, he does however like to map a car on the rich side from the sounds of things, hey its better than lean. Im sure once the car is run in and mapped you wont have issues with your plugs fouling up.

[Mir]

Not from personal experience and not doubting Pips work as he is somewhat of a legend when it comes to the rotary, he does however like to map a car on the rich side from the sounds of things, hey its better than lean. Im sure once the car is run in and mapped you wont have issues with your plugs fouling up.

don\'t get me wrong,Pip is a legend and in my opinion there is no one competent enough to challenge his rotary knowledge in the UK. It\'s all abt tunning when it comes to rotaries!! And in my opinion Pip has mastered that!! I m very pleased with his work.. This is with his permission that I m free to ask people questions. He knows, I love to research on the rotary, that\'s y he gets emailS from me left right and centre, and he always welcome my questions...i always inform him abt da questions I pose to the others!! So that he can c wat other thinks!! Very intelligent man.. And off course very busy!! He is mapping my motec too!!

The discussion I was having was purely enhancingy knowledge on things and getting the right set up.. Hope this explains, y I was asking questions!!

Syed