WTF....

[dakota]

i got killed by a cai and ex. 96 cobra..... i ran him a while ago on my stock motor and went door to door till 3rd. i now have the 502 cam springs and some bolt ons. and he killed me by ten plus cars, he is my friend and i know his car has not changed my car is lacking bad, but why.....? starts kinda rough now i'd hate to think its all b/c of a tune, i took my filter off and it was dirty ...really dirty, could this hold back that much power ? input please i am about to cry :( ........


thanks

[5POINT7]

you should have won, you may need a tune, or maybe the cobra had a good driver.

[YZF]

I'd check that tune stat.

[95formula383lt1]

tune

[dakota]

fuel filter did nothing, he is a good driver but still i can tell its lacking a crazy about of power.... crazy..... it doesn't throw me back or anything im so fing lost.................

[5POINT7]

fuel filter did nothing, he is a good driver but still i can tell its lacking a crazy about of power.... crazy..... it doesn't throw me back or anything im so fing lost.................

is most likely a tune, plugs/wires?

[dakota]

is most likely a tune, plugs/wires?





he has like 265 whp.... the race would tell me i have like 200 flat if not less , wires should be fine i would expect around 300 whp for me after tune but i don't see a tune taking care of the much power. wires are fine . spark pllug gap is at .046

[Fastbird]

Any chance he juiced you?

[hempkat94z]

put you plug gap to 35-40. It will make a difference but not that much. A tune on a cam motor could make that much difference but on a 502 I would be surprised. I would pull the plugs check to see if they are fouled and check over the plug wires.

[dakota]

Any chance he juiced you?


negative, like i said previously, my car felt like it had a huge power loss its like the power is not there and he is a good friend we hang out everyday and do our car work together. we are very very confused

[dakota]

put you plug gap to 35-40. It will make a difference but not that much. A tune on a cam motor could make that much difference but on a 502 I would be surprised. I would pull the plugs check to see if they are fouled and check over the plug wires.
ok, will do but they are brand new plugs . wires are fine .

[dakota]

oh and by the way this IS the first time i have floored it since the new motor

[venmuss]

Hey guys, this is dakota's friend with the '96 Cobra. Before you ban, know that I'm not here to bicker. I'm very impressed by your F-bodies, and while they're not my cup of tea, I can certainly respect the numbers you guys make with only a cam swap! Incredible. Anyways, the reason I'm here is to try and help dakota out, because we are both lost. Even I know that his car should rape mine from a 20 roll -- until I get my Kenne Bell atleast! lol

Here's what we know:
-We just swapped in a totally gone through LT1
-According to smell, it's running extremely rich, atleast at idle and regular driving
-We're running 93 octane
-Every once in a while, if the car is hot, it will act weird upon start up (a weird "pinging" noise -- not really detonation though as far as we can tell) until you rev it up to 3-4k
-It periodically stalls directly after a start, hot or cold
-Seems to be mechanically sound
-New fuel filter

Our ideas at this point are mainly fuel related -- maybe an injecter is f*cked and is dumping fuel when it's not supposed to?

Also, he has an LT4 knock module, which is less sensitive than the LT1 from what I've read, but is it possible for some kind of malfunction or misread to occur so that at full throttle it pulls the timing? If it's running far too rich will it pull the timing?

As dakota mentioned, the thing feels like it has 100hp less than it should at WOT, literally. It feels almost the same at half throttle as at full throttle. Help us out here guys, or I'm going to keep bragging that I beat a built LT1 :D. haha j/k (kind of)

[venmuss]

Another thought is that we probably gapped the spark plugs a little big for the application (.050). Do you think pre-ignition is a possibility?

[dakota]

you should have won, you may need a tune, or maybe the cobra had a good driver.


a tune for ten plus cars ?

[5POINT7]

a tune for ten plus cars ? a tune may be one of the problems as to why your car is not running right? Is your car throwing any codes?

[blackbird1084]

Check for codes. With a cam swap you'll have less vacum thus causing the fpr to pump more fuel then what is needed. Plug gap on an n/a motor will only be minimal loss at best but if your motor is getting flooded by fuel you could be seeing a significant loss. If you don't have atleast a mail order tune it will never run right.

[gregrob]

Not being mean, but you obviously fucked something up on the cam swap. If that's the only thing that's changed, it's only logical that is where you would start. Cant believe no one has mentioned that...

Make sure your opti is in right (if it's vented) splined one is hard to mess up.

Make sure your valve lash is set correctly. If your rockers are too loose it will not open the valves completely, or at the right time and it will run like shit.

If they are too TIGHT it will hold the valves open and bleed off compression.

There's also the possibility that you installed the cam/crank gears wrong and retarded the timing 1 or 2 teeth, that would make it run like shit.

Check fuel pressure

Run diag codes

Diag opti.

That's all I can think of for now. Check those things out and report back. I want a vid of you walking that cobra stat!

[dakota]

Not being mean, but you obviously fucked something up on the cam swap. If that's the only thing that's changed, it's only logical that is where you would start. Cant believe no one has mentioned that...

Make sure your opti is in right (if it's vented) splined one is hard to mess up.

Make sure your valve lash is set correctly. If your rockers are too loose it will not open the valves completely, or at the right time and it will run like shit.

If they are too TIGHT it will hold the valves open and bleed off compression.

There's also the possibility that you installed the cam/crank gears wrong and retarded the timing 1 or 2 teeth, that would make it run like shit.

Check fuel pressure

Run diag codes

Diag opti.

That's all I can think of for now. Check those things out and report back. I want a vid of you walking that cobra stat!


how do you check the opti.? exactly, fuel presure is fine, i pulled some plugs and they are black. and they are brand new

[Joker Z28]

Did you guys do the cam swap yourself?
Who tuned it?
Is there a way you can get the AFR readings or even a datalog?

[dakota]

Did you guys do the cam swap yourself?
Who tuned it?
Is there a way you can get the AFR readings or even a datalog?



It was my first motor build and my dad has a hook up with a very reliaable machine shop and he showed me how to do everything and stood beside me watching me do everything.... not tuned yet, i can check some codes tomorrow prolly .

[gregrob]

how do you check the opti.? exactly, fuel presure is fine, i pulled some plugs and they are black. and they are brand new

If the car is running good and pulling clean and smooth to red line I doubt it would be the opti. If it breaks up or misses it could be.

[dakota]

some new news, pulled the plugs needless to say cyclinder number 6 and 8 were BLACK...... all the others were clean

[SexyTransAm]

crossed wires?

[venmuss]

That would make sense, but would the car run even half decent if two of the cylinders were off? We're going to clean them up and regap them and see what happens. We also swapped those two injectors with 1 and 3 to see if the injectors have an issue. Will update as progress occurs, in the meantime, advice is welcome!!

[gregrob]

I had 2 crossed up wires after my cam swap. Actually didnt run two bad except no power! Double checked the firing order and fixed and holy shit did the car come alive.

That could def be it.

[5POINT7]

I had 2 crossed up wires after my cam swap. Actually didnt run two bad except no power! Double checked the firing order and fixed and holy shit did the car come alive.

That could def be it.

thats probably it, I never thought of that. :doh:

[Noah's95z28]

That fixed it right? Now vid of you waxing that cobra!

[dakota]

i just got on to see that so i haven't checked it, its past midnight and i have high school tomorrow FTL, thanks giving break on monday FTW so hopefully thats when we figure this out, also on plug number 6 the white eletrode was now not centered its off to one side a bit, pre ign.? is that wat causes that? and if it is a crossed wire its mustang boys fault, that was his side. DAMN you taylor.! i knew he would try to pull something ........cobra drivers.

[SexyTransAm]

i just got on to see that so i haven't checked it, its past midnight and i have high school tomorrow FTL, thanks giving break on monday FTW so hopefully thats when we figure this out, also on plug number 6 the white eletrode was now not centered its off to one side a bit, pre ign.? is that wat causes that? and if it is a crossed wire its mustang boys fault, that was his side. DAMN you taylor.! i knew he would try to pull something ........cobra drivers.
dont ever let a stang driver work on ur shit they will make for sure that they r faster then u lol :laugh:

[venmuss]

Lol damnit he found me out :innocent: But really, I wanted this thing to be much faster than the Cobra. I really hope our only problem is crossed wires, that would be pretty incredible. Thanks guys!

[dakota]

dont ever let a stang driver work on ur shit they will make for sure that they r faster then u lol :laugh:

BEST advice ever, Ha ha ha.. You know i love you taylor..... but you are on an LTX forumn.

[Joker Z28]

Sweet looking cobra, I love the SN95s
I would love to have on in black

[dakota]

Lol damnit he found me out :innocent: But really, I wanted this thing to be much faster than the Cobra. I really hope our only problem is crossed wires, that would be pretty incredible. Thanks guys!


X2 ...........


and


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99999999999999
9999999999
99999999
9999
9999999999
99999



on the thanks guys.

[venmuss]

Sweet looking cobra, I love the SN95s
I would love to have on in black

Thanks!

[venmuss]

BEST advice ever, Ha ha ha.. You know i love you taylor..... but you are on an LTX forumn.

Oh, the falls I take for my best friend...

:devil:

[dakota]

Oh, the falls I take for my best friend...

:devil:


The falls I would take for you, like if those guys kicked the cobra tonight:2guns:

[dakota]

does this mean i need to join a cobra forumn?

[SexyTransAm]

u do know cobra man if its crossed wires u will never hear the end of it right

[venmuss]

u do know cobra man if its crossed wires u will never hear the end of it right

You and me both, brother.

I definitely checked and double checked them, because they look like a bitch to get at with the motor in the car, with all the accessories and headers on. But I really hope that's our issue to be honest. I refuse to believe I built something that slow! haha

I won't be showing my face here much if I screwed that up, though :jest:

Representin' Cobra owners right??
lmfao

[dakota]

You and me both, brother.

I definitely checked and double checked them, because they look like a bitch to get at with the motor in the car, with all the accessories and headers on. But I really hope that's our issue to be honest. I refuse to believe I built something that slow! haha

I won't be showing my face here much if I screwed that up, though :jest:

Representin' Cobra owners right??
lmfao

I feel bad saying this but i do know he would put me in the same spot, wires were CROSSED...... not only cyclinder 6-8 but cyclinder 2-4 were wrong to WTFWTFWTF how did this car run ?


YOur REPIN' well venmuss....... your repin well

[dakota]

but jokes a side, hopefully have to running tomorrow, need to buy two new plugs and wires a couple were pretty burn't so i'd like to buy new ....... ha, ford kids.

[gregrob]

Cobra = ownt as soon as you put the new wires on.

[venmuss]

OptiFUCK THAT.

Have a nice life, everyone hahaha

[gregrob]

Dont be jealous

[SexyTransAm]

damn im good lol glad to hear it was an easy fix!!! now go spank that cobra!!!

[dakota]

thanks so much guys just one last probelm with her , starts fine ..but drive around for a while and shut it off say while im pumping gas and then go to start it again its really slow and hard starting and when it does fire it sometimes just shuts back off in about a second then turn it over again it fires hold the gas on like 1/16 in and it just runs rough as F*ck then outa no where while im keeping it alive it just revs its self to where i am hold the pedal down and i let of it and everything goes to normal. normal idle . normal drive . normal performance. WTF