Finally Its Gonna Happen
Senior Member
Joined: Jan 1999
Posts: 7,030
Likes: 3
From: WINDSOR, ONTARIO, CANADA
wasnt really talkin trash. im jus sayin it only happens on highly boosted engines. And sparkplugs in this case if your truck was running good (which i know it was). isnt gonna make any hp. umm never said anywhere LIGHT F150. jus said its a big truck. like ya know not an s-10. and yeah ur right ur truck will break 12s but even spraying of the start isnt gonna make the world go round your motor has to build inertia (crankshaft) to get goin so i mean it will help (spraying) but not as much as a high hp,tq na motor would off the line. ur off to a good start but another thing imo i would have kept the stock heads they flow very well for stock, and went after a turbo r something. and with the build im betting na on the dyno ur at around 300 hp??? and last neal just cause ur ring was broke in #5 cyl doesnt mean it wasnt working unless u took the sparkplug out. which we all know the answer to that, a broken ring doesnt always mean lesser powered cyl, happened in my car and it still had 150psi in that cylinder. all in all nice trucks guys dont take it to personal. jus came across a lil strong i guess
HI!... Well I had 0 psi in #5 cylinder FYI. The ring was broken in 4 spots.
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Senior Member
Joined: Oct 2006
Posts: 996
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From: fairview heights,IL
guys i think i have a big problem my truck isnt making any power near what its supposed to...its got good fuel/ air, new plugs, great compression...my tuner thinks that my cams are off and its not making the power when its supposed too..it seems like that is the only thing that can be causing my power loss..he thinks its not timed right...he said the shop can do if for $800 should i just let them do it
Senior Member
Joined: Jan 1999
Posts: 7,030
Likes: 3
From: WINDSOR, ONTARIO, CANADA
HI!... What #'s did you make with it not running right?
Do they think the cams are not degreed in right or that the timing chains are off their marks. I've seen guys get the chains set up wrong, off by a tooth. It will run but runs like a$$.
Do they think the cams are not degreed in right or that the timing chains are off their marks. I've seen guys get the chains set up wrong, off by a tooth. It will run but runs like a$$.
Senior Member
Joined: Jun 2005
Posts: 2,805
Likes: 2
From: NEVADA
Just curious, what were your 60' times and 1/8 times when you ran the 13.61? Your cams should have a 2,000+ converter according to the specs, even though it would be locked in first gear.
The cams being out of time will show up in the stfts nor running parallel. More than 8% (?) variance would indicate cam timing problems, which should be easy enough to datalog as a check for your self.
just some ideas.
The cams being out of time will show up in the stfts nor running parallel. More than 8% (?) variance would indicate cam timing problems, which should be easy enough to datalog as a check for your self.
just some ideas.
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Senior Member
Joined: Oct 2006
Posts: 996
Likes: 0
From: fairview heights,IL
Just curious, what were your 60' times and 1/8 times when you ran the 13.61? Your cams should have a 2,000+ converter according to the specs, even though it would be locked in first gear.
The cams being out of time will show up in the stfts nor running parallel. More than 8% (?) variance would indicate cam timing problems, which should be easy enough to datalog as a check for your self.
just some ideas.
The cams being out of time will show up in the stfts nor running parallel. More than 8% (?) variance would indicate cam timing problems, which should be easy enough to datalog as a check for your self.
just some ideas.
Last edited by boss1984; Oct 3, 2008 at 09:18 PM.
Senior Member
Joined: Oct 2003
Posts: 4,920
Likes: 5
From: Washington
i dont know bud, i dont see how degreeing a cam will give you that much change. all i see is reaching peak potentials which your not far from.
are we talking a minor amount of power that your hunting for or are you feeling like theres a lot missing?
are we talking a minor amount of power that your hunting for or are you feeling like theres a lot missing?
Member
Joined: Aug 2008
Posts: 66
Likes: 0
From: Texas
Congrats on the build, I hope you get the power issue squared away, you obviously have a ton of time and money invested in your truck.
To all of the other posters, y'all are an incredible source of info. It has been an interesting and knowledge building time spent reading this thread.
Craig
To all of the other posters, y'all are an incredible source of info. It has been an interesting and knowledge building time spent reading this thread.
Craig
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Senior Member
Joined: Oct 2006
Posts: 996
Likes: 0
From: fairview heights,IL
Congrats on the build, I hope you get the power issue squared away, you obviously have a ton of time and money invested in your truck.
yes i do and thanks
To all of the other posters, y'all are an incredible source of info. It has been an interesting and knowledge building time spent reading this thread.
Craig
yes i do and thanks
To all of the other posters, y'all are an incredible source of info. It has been an interesting and knowledge building time spent reading this thread.
Craig
??? what should it be
Technical Article Contributor
Joined: Dec 1997
Posts: 9,417
Likes: 11
From: Windsor,Ontario,Canada
Closed loop is where the PCM uses input from the sensors to control the engine. Open Loop is when it uses tables. The engine provides the most power in Open Loop. There is usually a delay before the PCM reverts to Open Loop at WOT. Just so you know before the engine warms up it is in Open Loop. My PCM used to have a 12 second delay before going into Open Loop at WOT.
Regards
Jean Marc Chartier
Regards
Jean Marc Chartier