Problems with my vortech

88cobraconvt · 06-03-2001, 11:32 PM

I just installed a S trim in my mustang and my car now runs like crap. I also installed a Jacobs boost control. I got the supercharger used. The guy I bought it from said he was running about 15 lbs of boost with this set up. It also came with an Anderson power pipe. I think it might be a fuel problem. The car seems to idle fine but doesnt want to accelerate. Im going to order a new pulley set up(6-8lbs) because 15 lbs is too much for my 10.1 comp. I just want to get it running decent and Ill fine tune it when i get my new pulleys. The blower seems to be running fine itself. Need some ideas were to start. Do I need to adjust my fuel pressure regulator? Please help..

------------------
88 Cobra Convert DSS 306 Pro Bullet, 10.1 Pistons, Windsor Jr heads, Edlebrock Performer intake, 24# injectors, 3.55's,Mass Air conversion, cam, complete exhaust, jacobs pro street ignition, 190 gph fuel pump, 275/40/17's rear, 245/40/17 front on ROH's, BBK springs, megabite rear, and a lot more

06-04-2001, 12:00 AM

ok these areas are not to be overlooked when you are tuning your blown monster

1)Make sure you have your plugs at least one heat range cooler and have them gapped at .30-.35

2)What is your fuel pressure at idle?Get a fuel pressure gauge.You need to know this because going lean can lead to detonation.

3)Timing-- what is your timing set at?

Get me some more info

------------------

Paxton Blown 87GT
ICQ#91504337

SLOWPONY · 06-04-2001, 11:09 AM

Start off by getting bigger injectors the car will run much better. Take the timming down to about 8 degrees at idle. But more than likely it is not enough fuel. Try a set of Autolite 3923's or a set of NGK r5671a-7 plugs.

88cobraconvt · 06-04-2001, 07:59 PM

I didnt re-gap my plugs, they're at 42-45 I believe. I need to get a fuel pressure gauge to see were thats at. I set my initial timing at about 10 degrees. Would the plug gap make that big of a difference? My car runs horrible, no power at all. I havent taken it over 2500 rpm yet. It would take a lot to even get it there the way its running. Like I said before it seems to idle great, it doesnt seem to be missing. Thanks for the tips, i'll try those few things out and see were that puts me.

------------------
88 Cobra Convert DSS 306 Pro Bullet, 10.1 Pistons, Windsor Jr heads, Edlebrock Performer intake, 24# injectors, 3.55's,Mass Air conversion, cam, complete exhaust, jacobs pro street ignition, 190 gph fuel pump, 275/40/17's rear, 245/40/17 front on ROH's, BBK springs, megabite rear, and a lot more

93CobraR · 06-04-2001, 09:40 PM

Deffinatly change the plug gap, I bet thats your problem right there.

------------------
87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's,GT-40 heads,Crane 2031, Edelbrock intake, long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's.
Best time 12.96
Best MPH 103.42
Best 60' 1.695

Visit my site at:
http://www.geocities.com/cobrar93_2000/MyPage.html

06-05-2001, 02:09 AM

Quote:

I didnt re-gap my plugs, they're at 42-45 I believe.

You need to close the gap up then.The reason why it's necessary is so the forced air entering into the cylinders won't blow the spark out.Also install one heat range cooler plugs as well while your doin this step.Your plugs should have a slight brown tint to them when you check them later on.If they come out white,it means the motor is running lean.

Fuel pressure should be around 40 psi,but it should go up to around 70-75 under full boost.These are just some baseline numbers for fuel pressure.

------------------

Paxton Blown 87GT
ICQ#91504337

Skyman · 06-05-2001, 02:24 AM

Do you have an FMU? If not your fuel system is WAY too small. You need 36lb injectors minimum, and a TREX inline pump. You have 10 degree initial timing and how much boost retard? How is your car running like crap describe...
How much boost are you seeing, is your maf ok?

Skyler

------------------
-1989 Saleen Mustang #406- TFS Heads, E-303, edelbrock intake,70MM TB, 73mm MAF, off road H, headers and 3chamber flows.
12.55@107mph
50-175 Nitrous Works WET Kit just added.

06-03-2001, 11:32 PM	#1
88cobraconvt Registered Member Join Date: Dec 2000 Location: Pleasant Grove, Utah USA Posts: 7	Problems with my vortech I just installed a S trim in my mustang and my car now runs like crap. I also installed a Jacobs boost control. I got the supercharger used. The guy I bought it from said he was running about 15 lbs of boost with this set up. It also came with an Anderson power pipe. I think it might be a fuel problem. The car seems to idle fine but doesnt want to accelerate. Im going to order a new pulley set up(6-8lbs) because 15 lbs is too much for my 10.1 comp. I just want to get it running decent and Ill fine tune it when i get my new pulleys. The blower seems to be running fine itself. Need some ideas were to start. Do I need to adjust my fuel pressure regulator? Please help.. ------------------ 88 Cobra Convert DSS 306 Pro Bullet, 10.1 Pistons, Windsor Jr heads, Edlebrock Performer intake, 24# injectors, 3.55's,Mass Air conversion, cam, complete exhaust, jacobs pro street ignition, 190 gph fuel pump, 275/40/17's rear, 245/40/17 front on ROH's, BBK springs, megabite rear, and a lot more

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06-04-2001, 12:00 AM	#2
Mustanguy Guest Posts: n/a	ok these areas are not to be overlooked when you are tuning your blown monster 1)Make sure you have your plugs at least one heat range cooler and have them gapped at .30-.35 2)What is your fuel pressure at idle?Get a fuel pressure gauge.You need to know this because going lean can lead to detonation. 3)Timing-- what is your timing set at? Get me some more info ------------------ Paxton Blown 87GT ICQ#91504337

06-04-2001, 11:09 AM	#3
SLOWPONY Registered Member Join Date: Nov 2000 Location: detroit,mi Posts: 27	Start off by getting bigger injectors the car will run much better. Take the timming down to about 8 degrees at idle. But more than likely it is not enough fuel. Try a set of Autolite 3923's or a set of NGK r5671a-7 plugs.

06-04-2001, 07:59 PM	#4
88cobraconvt Registered Member Join Date: Dec 2000 Location: Pleasant Grove, Utah USA Posts: 7	I didnt re-gap my plugs, they're at 42-45 I believe. I need to get a fuel pressure gauge to see were thats at. I set my initial timing at about 10 degrees. Would the plug gap make that big of a difference? My car runs horrible, no power at all. I havent taken it over 2500 rpm yet. It would take a lot to even get it there the way its running. Like I said before it seems to idle great, it doesnt seem to be missing. Thanks for the tips, i'll try those few things out and see were that puts me. ------------------ 88 Cobra Convert DSS 306 Pro Bullet, 10.1 Pistons, Windsor Jr heads, Edlebrock Performer intake, 24# injectors, 3.55's,Mass Air conversion, cam, complete exhaust, jacobs pro street ignition, 190 gph fuel pump, 275/40/17's rear, 245/40/17 front on ROH's, BBK springs, megabite rear, and a lot more

06-04-2001, 09:40 PM	#5
93CobraR Registered Member Join Date: Oct 1999 Location: Cincinnati, Ohio Posts: 1,575	Deffinatly change the plug gap, I bet thats your problem right there. ------------------ 87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's,GT-40 heads,Crane 2031, Edelbrock intake, long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's. Best time 12.96 Best MPH 103.42 Best 60' 1.695 Visit my site at: http://www.geocities.com/cobrar93_2000/MyPage.html

06-05-2001, 02:24 AM	#7
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	Do you have an FMU? If not your fuel system is WAY too small. You need 36lb injectors minimum, and a TREX inline pump. You have 10 degree initial timing and how much boost retard? How is your car running like crap describe... How much boost are you seeing, is your maf ok? Skyler ------------------ -1989 Saleen Mustang #406- TFS Heads, E-303, edelbrock intake,70MM TB, 73mm MAF, off road H, headers and 3chamber flows. 12.55@107mph 50-175 Nitrous Works WET Kit just added.