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Author
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Topic: got my engine running but the bottom end seems weak
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OneBadHatch
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Member # 970
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posted
 
 
i have a
trick flow street heat intake
trick flow stage 1 cam
afr 165's 70mm throttle body
24 lb injectors
timing is set at 20 degrees with spout connector out
it runs reals smooth but it seems to be really slow before about 3500 rpm's and then it really takes off...anyone have any ideas? ![[patriot]](graemlins/patriot.gif)
[ March 05, 2007, 04:42 PM: Message edited by: OneBadHatch ]
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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OneBadHatch
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Member # 970
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posted
ANYONE?
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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SmokinLX
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Member # 1684
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posted
You have a tune? Custom chip?
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Dont claim power if ya cant mile per hour. 10 second AOD
Posts: 4388 | From: East Bay | Registered: Aug 2002
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92stangLX
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Member # 3252
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posted
Your timing sounds like it is set pretty high. what happens when you back it off to 14 degrees?
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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OneBadHatch
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Member # 970
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posted
i dont have a tune yet...it seems to run alot more rough at 14 degrees, but then again i dont know how the idle should be for that cam cause i have no past experience with it
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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RiddlerGT
Midnight King
Member # 113
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posted
20 degrees initial is way to high.. Something is wrong with your setup
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SR
Posts: 2292 | From: San Ramon | Registered: Dec 2000
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OneBadHatch
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Member # 970
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posted
any ideas what might cause it im going to reset my timing when i get off work should i try it at 14 degrees or less
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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Eddie510-
CAFords OG
Member # 2354
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posted
off a tooth?
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"I like to be more politicaly correct than what I really believe so I can get more frinds here on CaFords"-Cummings "TIPICKLE"
Posts: 6556 | Registered: Jan 2003
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silverLX
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Member # 3207
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posted
quote:
Originally posted by Eddie510-:
off a tooth?
no
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88LX hatch 410w
88LX vert gears, exhaust
95GT H/C/I
Posts: 1613 | From: Sonoma County | Registered: Aug 2003
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JohnB
Tech Moderator
Member # 969
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posted
How old is the balancer? It's possible the ring slipped. But ya, 20 is waaaay high...
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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lxhatch5.0
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Member # 6319
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posted
Seems like you been had. They sold you a turbo instead of a charger ![[Big Grin]](biggrin.gif) . JK yeah that cam should be kind of rough, and yeah your timing is way high. Lower it to 14 and work up slowly from there.
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*NorCal
Posts: 1556 | Registered: Dec 2005
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OneBadHatch
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Member # 970
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posted
lowered it to 14 the car just doesn't feel right it feels just like turbo lag only i don't have a turbo...could the throttle position sensor cause something like that???
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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93PONY
Mr. Valve Events
Member # 60
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posted
What timing chain are you using?
Was the camshaft degreed in?
I've seen timing chains that were 4+ degrees off when on the 'zero' keyway....& cams that were ground 4+ degrees off from the cam card. From my experience this is more comon with 3-keyway timing chains. Typically I use 9-keyway chains & degree everything.
It either sounds like the balancer/dampner is off, or the cam timing is off. Both are comon.
Really, the dampner should be degreed in to TDC on the #1 cylinder to make sure '0' on the balancer/dampner is truely TDC.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4265 | From: Fair Oaks, CA | Registered: Nov 2000
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silverLX
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Member # 3207
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posted
Have you checked the TPS volts? Bad balancer is a good possibility also, whats your fuel pressure at? New filter(air, fuel), clean MAF, good tune up???
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88LX hatch 410w
88LX vert gears, exhaust
95GT H/C/I
Posts: 1613 | From: Sonoma County | Registered: Aug 2003
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OneBadHatch
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Member # 970
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posted
the k&n filter was just recharged, my fuel pressure it sitting at about 32 psi the balancer is pretty much new it has 5000 miles on it looks perfect on the outside i haven't checked the tps volts..what should it be at i have never checked one
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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*BlueBeast88.306*
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Member # 6360
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posted
TPS voltage should be around .99 volts at idle at the green wire. Like I said though I have a similar setup and mine runs best at 20 degrees, so then maybe something is wrong with mine but it runs great.
Posts: 462 | From: Concord | Registered: Jan 2006
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OneBadHatch
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Member # 970
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posted
it does the same thing at 20 degrees as it does at 14 degrees though, the timing is not the problem
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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*BlueBeast88.306*
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Member # 6360
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posted
What gears do you have? My Power dosent come on until around 2500-3000rpm, I think that is where that cam is supposed to make power.
So if you have high gears its going to suck, because it will take longer to get into that range.
Posts: 462 | From: Concord | Registered: Jan 2006
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OneBadHatch
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Member # 970
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posted
3.73's
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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*BlueBeast88.306*
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Member # 6360
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posted
Thats what I have, I don't know what the problem is then.
Posts: 462 | From: Concord | Registered: Jan 2006
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OneBadHatch
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Member # 970
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posted
.99 volts at the green wire... and what else? is that all i have to do to test it?
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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OneBadHatch
¯
Member # 970
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posted
it only bogs when its under a load, if im doing a burnout it feels normal but as son as the tires grip it immediately bogs down
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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2stangs69-91
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Member # 1951
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posted
actuly the correct way to check timming on yours would be to check the total at around 3000 rpm it should be around 34 degrees. Everything sounds like it is ok. I might try borrowing somebody elses mass air meter and just plug it in see if there is a difference. You might want to try running a compresion test on your motor to see were it is at. good luck
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69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
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Lemonade
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Member # 3692
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posted
quote:
Originally posted by silverLX:
clean MAF???
quote:
Originally posted by OneBadHatch:
the k&n filter was just recharged
Did you maybe over-oil your filter & contaminate the MAF sensor? Code check?
Lems
Posts: 293 | From: San Ramon | Registered: Oct 2003
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OneBadHatch
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Member # 970
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posted
yea i did re-oil my filter but I looked at he maf and it looks perfect... no dirt/dust or buildup of any kind on it. my idle also really sucks for the first 5 minutes or so
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1990 GT
TFS Intake and Cam
AFR 165's
Plus all the goodies
Posts: 834 | From: Oceanside, CA | Registered: Mar 2002
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