Nopi Nationals Sept 24-25 Moroso [Archive] - Page 6

View Full Version : Nopi Nationals Sept 24-25 Moroso

Pages : 1 2 3 4 5 [6] 7

SlowWhite

10-01-2005, 06:44 PM

I have a Turbonetics T3 Exhaust manifold with the Tial 38mm on the #1 runner. but I've never heard of any DSM's having this issue, Moe runs one on his car, John Lacroix I believe ran one on his car.

Anyrate Just got done warming it up and driving it around the apartment complex.

I swapped the #2 and #3 spark plugs so that way the #2 would be grey and to black so I could see if there was any change. I also verified that the #2 spark Plug was firing off the #3 coil to make sure the coil pack wasn't the problem - When I got back the #2 spark plug which was grey was starting to go black, and it was definetely wet, but I don't think it was gas. (the smell of Gas wasn't there, or at least wasn't the smell of pure gas like when you pull and injector)

The #3 spark plug was still black as hell but I never got on it, and was just a quick off boost drive around the 2 building that are adjacent to mine.

I also cleaned off the Valve cover throughly that way I can see where the oil is coming from. And at idle it started to collect on the inside of the spark plug well, on the bottom bolt closest to the cam gear cover. I want to let you guys know that the Valve cover bolts on the outside row closest to the Cam gear cover do not tighten down. The threads must be stripped But I haven't messed with it to see if I can re-tap the holes. But all the inside sparkplug well bolts, and every other outside Valve cover bolts tighten down, which is why I haven't messed with it didn't think it would be an issue, and wasn't an issue till all this started happening.

I checked the torque of the Head studs all of them are/where tighened to 100ft/lbs (as John said they should be) and all the valve springs/rockers, etc all looked to be in place and operating correctly I saw nothing out of place.

SlowWhite

10-01-2005, 07:05 PM

Not that this is topic related but I've been trying to mess with my HP calculations and I'm wondering why is it that my HP changes so much through out a pull?

If you have DSMLINK Set up so that it show's HP and Torque, with these settings.

3325(car+my weight) with my tire size 220/40/18, and everything else default. and apply it, why does my HP change so much through out the run. I'm assuming/hoping it's because of the problem I'm having.

But say on my 12.9 run my HP goes anywhere from 236HP all the way up to 396HP even though my Lbs/min, my G/Rev all seem to be holding pretty well. For most of the run the HP sits around 330hp which would make sense for a traps around 106-108mph like I did. Could it be that when the HP jumps up that the cylinder or what ever is firing at that time?

JET

10-01-2005, 07:07 PM

I saw this recently on someone else's engine. Could your intake manifold gasket be bent over and in one of the runners? It should show up on the boost leak test you did though. Another thing to try would be swapping injectors to see if that changes what cylinder gets black. Maybe it is sticking open?

SlowWhite

10-01-2005, 07:26 PM

Alreayd tried that. I swapped the #1 and the #2 cylinder injectors and it didn't change anything.

also forget the HP thing, cause if I used those settings on my logs of when I dyno'd 403 and 456 It said I was putting down 600 something and 700. Which might be because one is a street application and the other is dyno. However at least on the dyno logs the HP continues to increase for the most part where as on my latest logs they go up and down through out the entire run.

Outlaw1

10-02-2005, 12:22 PM

Just a long shot, but worth a look. Does your intake manifold have a vacuum source on the #2 runner? Do you have that line running to the fuel pressure regulator? If you pull that hose off does it have fuel in it? Just something to look at it, you might have a busted diaphram in the regulator.

SlowWhite

10-02-2005, 12:37 PM

actually I'm pretty sure that all 4 of my vacuum lines are running between my #2 and #3 runners with my vacuum line for the fuel closest to the #2 runner

I'll have to go out and check here in a minute

SlowWhite

10-02-2005, 01:02 PM

Ok yes my fuel vacuum line and my Brake booster line are plumped right infront of my #2 runner, however when I pulled the lines (ie: everyline attached to the Regulator) No fuel came out. the only one I didn't pull was the fuel return line

SlowWhite

10-02-2005, 01:26 PM

Is there anything special I need to be doing when installing the CAS once I've pulled it out to test if the injectors are firing? I pulled it way back when I first posted about my fuel pump wire coming loose. And all I did was just stick it back in the socket and re-tighten... Was there an alignement or something I was supposed to do... Like install it when a cylinder is Top dead Center and when it's set for a certain sequence of firing?

Alpine TSi

10-02-2005, 03:00 PM

SlowWhite

10-02-2005, 03:20 PM

How who'd I know?

all i did was take it out and then spin it by hand with the key in the on position, so that I could hear the injectors firing/fuel pump kicking on.

Then I just put it back in, and tightened it down. I know I got the actual CAS positioned correctly but not sure if there is a firing sequence or something, (ie: I'd have to spin it till it got to the #1 injector or something like that)

I really don't know much about it other then I quickly glanced over a post on dsmlink forums where they said you have to get the #1 cylinder to top dead center and then install it, but didn't quite get more then that out of the thread.

I'm actually thinking about pulling the fuel rail and the CAS so that I can spin it by hand and see if the injectors are firing,etc.

I'm really out of ideas here on what the hell could be going on? what else could it possibly by I've tried Fuel, I've tried spark, the only thing I can't test as far as I know is "AIR"