Hey Mr. B...welcome to the thread after 5 pages of posts.

If you have a new kit hanging around, can you tell me if they included some longer manifold studs? The ones I had are only 6 threads deep, and the stock studs are about 11 threads deep.

One of them stripped, becuase it wasnt installed correctly.

 

That one, I wouldn't know. I was just told by a friend who got the new kit that the oil pan was different from the one I got. I know what you mean about the studs. I got the same damn ones and am afraid of them snapping off as more power is pulled outta my application.

 

TONY DG - used anti-sieze on all bolts and studs - and when changing Factory Cats to RT Cats - checked - no loose bolts..

A definite factor...

P.S. Sold the Kinetics Camber rods to GQ... Sorry

Cheers Amy -

 

Don't be sorry. I'm glad you found a buyer.
I'll just have to wait for another steal of a deal in the future.

 

Hey good luck with the engine I am gonna bounce out of this FI section for awhile but I'll swing by again some day and check out what you have.

I am getting PM's about this thread, the oil pan this the engine that WTF man? My fuel pump this needs this FPR that my car runs PERFECT, I posted a video etc etc!

I see why all the old timers don't even come here anymore because of this type of BS drama.

Remember the FIRST people that jumped on board with the ATI and talked about tuning and detonation and finding timing solutions etc Eletrojug, Swinke, Mike@Altered, ZED, Jesse, Bonz, Jrit, Ravaz, GaryK and on and on it's an oil pan stop pming me man I just said the dude was legit....... This drama is like the 5th grade and you KNOW who you are peeps.....

 

You know, I haven't been a member long and what you are saying is 100% right. You get nothing but drama....I wasted so much time trying to sort through all the second guessing and accusations on this post to actually read what happened to nicks car. I can tell you this, when I finally do decide which turbo kit I want for my car I will definitely be pming directly, those that actually do have knowledge and experience rather than post on here for all the "know it alls" to put in there .02. I mean why post anything that happens if all they are gonna do it flame. I appreciate you putting up with all these "great" people on here so someone like me who is trying to research can get some legit information and experiences.

 

I hope everyone doesn't stop posting information because of a few skeptics. Just ignore them and converse with those who are truly interested.

 

as i scratch my head more and more and pool data from the dyno, the emanage, the peak hold readings from all the gauges.

after i had taken out 5-7 degrees of timing at wot from 4500 to redline.
after checking the peak egt of 950c
peak fuel pressure at 50 psi. (most likely dropped to 40ish at the time)
af ratio on the last dyno with a burp above 13.1
running @ 6 psi.

i surmise i did not have the BSFC (basically how much fuel you use per hp per hour.) i needed for turboed cars of .60-.65. everything calculated @ 43psi fuel pressure

Horsepower X BSFC
------------------------
6 injectors X .80 (max duty cycle)

400 BHP x .65 BSFC
------------------ = 54.1 LB/HR = 560 CC/MIN
4.8


now calculating the 440s hp potential

Injector size(lb/hr) x (duty cycle)
---------------------------------
target BSFC

440 cc/min (42 lb/hr) x .8 (max duty cycle)
---------------------------------------------------- = 51 hp per inj
.65

51 x 6 injectors = 310 HP

So i'm guessing i did not have enough fuel pressure on the rail to provide the amount of fuel needed.

Oh well time to throw in the 660cc/min and 250 lph @ 60 psi fuel pump.

what fun this has been

Nick

 

Hmmm the 440 greddy injectors should supply enough fuel for 6psi boost pressure.

Even at a 100% duty cycle the greddy injectors should supply 57 hp per injector or 342 hp @ 40 psi fuel line pressure based on a bsfc of .65

it seems odd that the fuel pressure would drop that low @ 6psi.

if that is indeed what happened then of course that would cause the lean A/F ratios and ultimate destruction of ur motor however it seems unlikely the fuel pressure would drop that low.....

Strange indeed did you have anyway to measure fuel pressure?

You must have maxed out the injectors @ like 4000 rpm or something.

This is common @8 psi with most people running the greddy TT as the IDC is maxed out due to fuel line pressure limitations and lean conditions occur at the higher revs 5500 rpm and up but ive never heard of this happening @ 6 psi...

what else do you think might have happened assuming fuel system pressure was not the culprit?

 

So the 440cc injectors are only good for up to 310hp? What of all the other people with Greddy's kit and getting 400whp?

 

i mustve been unlucky ><

plus the calculations that i did not spend time doing would've saved the motor. i just have a feeling there is something not "quite" the same on the g35.

i honestly don't know any other thing other than i was unlucky. or maybe didn't pay enough attention.

expensive little mishap i guess. lol shoulda stayed with 4 bangers

i wonder how many 400whp guys have new fuel pumps.

 

Hey Nick, should be most. To hit the 400whp most are pushing 8 - 9 psi and the factory fuel pump at 6.5 to 7psi will not hold enough fuel pressure from 5400 to redline.

 

Uhh no, the 440cc injectors are fine for over 400whp, but if you don't have a fuel pump that can pump all that exta fuel, then it's worthless.

 

Ah, gotcha ravaz. I was starting to wonder how much duty cycle the injectors would be at around 400whp even with a fuel pump though...