DSMlaserRSracer
Probationary Member
- 2
- 0
- Apr 14, 2010
-
Viroqua,
Wisconsin
Well I'm kinda new to this site here but maybe I can actually figure out my problem. I guess I'll start from I first bought the project 1990 Plymouth Laser RS back in the fall of 2006, suppose to have just a bad head on the engine, ok no problem I thought... After buying the car for $600, getting it home with all 4 flat tires (weather checked) & getting the engine head off, I realized it was going 2 be alot more work than just a head swap. I just decided 2 buy another Plymouth Laser for a parts car to build the good one up.
I had converted the non-turbo engine with high compression pistons 2 run with the stock 14b turbocharger that was originally in the car. The build & swap of everything went pretty smoothly. Most of the parts on it are stock, I'm trying 2 get as much power safely out of the stock engine, turbo & drivetrain. Listed below are the currently replaced items...
-Engine swap.
-Engine conversion. (Non-turbo converted to turbo)
-Pressure plate. (OEM)
-Clutch. (ACT 2600)
-Turbo clip & port. (OEM- 14b)
-Spark plugs. (NGK-gap @ .28)
-Spark plug wires. (7mm)
-Coil pack. (OEM)
-Fuel filter. (OEM)
-Air filter. (OEM)
-Oil filter. (Fram)
-Boost gauge. (Autometer)
-Oil pressure gauge. (Autometer)
-Temperature gauge. (Autometer)
-Voltage gauge. (Autometer)
-Valve cover gasket. (OEM)
-Intake manifold gasket. (OEM)
-Exhaust manifold gasket. (OEM)
-Exhaust manifold. (OEM)
-Custom 2.5" stainless steel dual exhaust.
-2 chrome high flow mufflers. (3.5"+ outlet)
-Crushed 1G-BOV. (OEM)
-MBC. (Manuall boost controller)
-Eliminated throttle body vacuume lines.
That's all I can think of that I have done so far, but onto my problem. In neautral it runs perfect, idles @ 850 rpm with -20 in/vac showing on the aftermarket boost gauge. (Which is normal from what I've researched, correct me if I'm wrong.) Then reving I can either stomp the throttle 5,500 rpm @ about 4 lbs of boost before the rev limiter kicks in or I can carefully get it 2 rev up 7,000 rpms with almost 5 lbs of boost.
That part is fine, it's just when I'm driving in any gear 1-3 I've noticed so far. Starting in 1st I'll let the clutch out, give it gas, starts building boost @ about 2,500 rpm then by 4,000 rpm I have almost 10 lbs of boost but @ 4,000 rpm it sounds like my BOV is activating over & over agian. I can't get any higher rev than 4,000 when driving. So I'll shift into 2nd start giving gas & building boost. Agian @ 4,000 with almost 12 lbs of boost it sounds like my BOV is activating over & over agian. So once agian I'll shift into the next gear 3rd, start giving gas building boost then agian same thing.:bandgead:
I have no idea what is goin on now, I've checked over so many things. It seems like my MBC isn't even controlling my boost @ all. Which ever way I turn that knob seems 2 make no difference what so ever. My flapper arm is connected on the dump side & the actuator still works fine connected threw an air compressor. I can feel pressure coming out the stock J-tube on the stock 14b turbo after I rev it up a little bit but it doesn't move the flapper arm very much. I know quite a bit about the DSMs and have never seen this problem before. I'm getting lost on what it could be now. Any information would be greatly appreciated.
Hopefully I get alot of answers from alot of people & they're all saying the same thing, some easy fix that will take only a few minutes.
HELP will be greatly appreciated, Thanks agian-Josh.
I had converted the non-turbo engine with high compression pistons 2 run with the stock 14b turbocharger that was originally in the car. The build & swap of everything went pretty smoothly. Most of the parts on it are stock, I'm trying 2 get as much power safely out of the stock engine, turbo & drivetrain. Listed below are the currently replaced items...
-Engine swap.
-Engine conversion. (Non-turbo converted to turbo)
-Pressure plate. (OEM)
-Clutch. (ACT 2600)
-Turbo clip & port. (OEM- 14b)
-Spark plugs. (NGK-gap @ .28)
-Spark plug wires. (7mm)
-Coil pack. (OEM)
-Fuel filter. (OEM)
-Air filter. (OEM)
-Oil filter. (Fram)
-Boost gauge. (Autometer)
-Oil pressure gauge. (Autometer)
-Temperature gauge. (Autometer)
-Voltage gauge. (Autometer)
-Valve cover gasket. (OEM)
-Intake manifold gasket. (OEM)
-Exhaust manifold gasket. (OEM)
-Exhaust manifold. (OEM)
-Custom 2.5" stainless steel dual exhaust.
-2 chrome high flow mufflers. (3.5"+ outlet)
-Crushed 1G-BOV. (OEM)
-MBC. (Manuall boost controller)
-Eliminated throttle body vacuume lines.
That's all I can think of that I have done so far, but onto my problem. In neautral it runs perfect, idles @ 850 rpm with -20 in/vac showing on the aftermarket boost gauge. (Which is normal from what I've researched, correct me if I'm wrong.) Then reving I can either stomp the throttle 5,500 rpm @ about 4 lbs of boost before the rev limiter kicks in or I can carefully get it 2 rev up 7,000 rpms with almost 5 lbs of boost.
That part is fine, it's just when I'm driving in any gear 1-3 I've noticed so far. Starting in 1st I'll let the clutch out, give it gas, starts building boost @ about 2,500 rpm then by 4,000 rpm I have almost 10 lbs of boost but @ 4,000 rpm it sounds like my BOV is activating over & over agian. I can't get any higher rev than 4,000 when driving. So I'll shift into 2nd start giving gas & building boost. Agian @ 4,000 with almost 12 lbs of boost it sounds like my BOV is activating over & over agian. So once agian I'll shift into the next gear 3rd, start giving gas building boost then agian same thing.:bandgead:
I have no idea what is goin on now, I've checked over so many things. It seems like my MBC isn't even controlling my boost @ all. Which ever way I turn that knob seems 2 make no difference what so ever. My flapper arm is connected on the dump side & the actuator still works fine connected threw an air compressor. I can feel pressure coming out the stock J-tube on the stock 14b turbo after I rev it up a little bit but it doesn't move the flapper arm very much. I know quite a bit about the DSMs and have never seen this problem before. I'm getting lost on what it could be now. Any information would be greatly appreciated.
Hopefully I get alot of answers from alot of people & they're all saying the same thing, some easy fix that will take only a few minutes.
HELP will be greatly appreciated, Thanks agian-Josh.