[bignasty0017]

Hey, i resently bought a 2.0 jetta gl (it has a gold front end tho) my only thing is it is dirt slow... i bought it to get better gas milage, i also drive a Dodge Durango (money pit)... so if anyone could help me with parts or any info on how to increase performance without going broke let me know... THanks

 

[N_Flames]

Just started tuning an mk3 2.0L,this may help you. The first thing we did was advance Cam sprocket one tooth on timing belt. This made a huge difference, more power on bottom end didnt affect top end, but would still run out of power @ 5000 rpm. Next thing we did was add a cold air scoop,on this 97 Jetta there is a small grill under the bumper on the air box side of the car,we removed the grill & moved horn.Made a scoop that would fit in that opening & used a flex hose & hooked it up to the air box. The air box on the mk3 had a hot air tube that we unplugged the vacuum line that controlled the hot air inlet. The power gain was incredible & keeps pulling past 6000 rpm. This was all done very cheap with incredible gains in power. Engine is stock before the mods. next in line is a mild cam. On rainy day disconnect flex hose from air box keep rain from getting in to intake air.

 

[JDM_GUY]

N_flames,

nice one on making the cam advancement... did you do that also with the mild cam?

 

[MkTrek]

You don't hear to many guys with the 2.slow switching out the cams inexpensive and affective
might have to do that

 

[N_Flames]

Haven't tried replacing the cam yet, but back in 1971 auto manufacturers started retarding the cam timing on the V8 timing gears to reduce emission. Most were retarded 4 deg. some may be more. I believe VW may have done the same with the cam sprocket, that why I had a nice power gain. Cam Deg. are measured @ the crankshaft.( http://www.enginebasics.com/Engine Basics Root Folder/Camshaft Timing.html ) I believe 1 tooth advanced on the cam sprocket is 8 deg. on the crankshaft, so if cam sprocket is retarded 4 deg. that set the cam @ 4 deg advance of cam timing. Ill test that later this year when I install the cam & degree it in. Only advance one tooth when you do this to your engine or get an adjustable cam sprocket. I have two more 2.0 engine ill see what they take before they blow. I ran a 1998 Jetta with the converter unbolted, wow was it loud but had good power. I need to set a benchmark for my testing that way I can tell you what works & what doesn't, its in the making.

N_flames,

nice one on making the cam advancement... did you do that also with the mild cam?

 

[Gargamelmk2]

Before you start messing with the timing do the basics first...plugs, wires, dist cap, rotor button, air filter, fuel filter, oil change is a must..if you're going to mess with the cam gear you're better off putting on a new timing belt as well, also knock the tabs off the Distributor case that hold the bolt in position and adjust from there as well...
Exhaust is always a must
Also search funtion 2.0 bolt ons

 

[N_Flames]

Before you start messing with the timing do the basics first...plugs, wires, dist cap, rotor button, air filter, fuel filter, oil change is a must..if you're going to mess with the cam gear you're better off putting on a new timing belt as well, also knock the tabs off the Distributor case that hold the bolt in position and adjust from there as well...
Exhaust is always a must
Also search funtion 2.0 bolt ons

Been there done that have the T-Shirt, but not ready to send my $$$$$$ on bolt-ons till I can squeeze all the power out of it.

Posted back in 01/01/2011
( Just started tuning an mk3 2.0L,this may help you. The first thing we did was advance Cam sprocket one tooth on timing belt. This made a huge difference, more power on bottom end didnt affect top end, but would still run out of power @ 5000 rpm. Next thing we did was add a cold air scoop,on this 97 Jetta there is a small grill under the bumper on the air box side of the car,we removed the grill & moved horn.Made a scoop that would fit in that opening & used a flex hose & hooked it up to the air box. The air box on the mk3 had a hot air tube that we unplugged the vacuum line that controlled the hot air inlet. The power gain was incredible & keeps pulling past 6000 rpm. This was all done very cheap with incredible gains in power. Engine is stock before the mods. next in line is a mild cam. On rainy day disconnect flex hose from air box keep rain from getting in to intake air.)

 

[jetta95]

Just started tuning an mk3 2.0L,this may help you. The first thing we did was advance Cam sprocket one tooth on timing belt. This made a huge difference, more power on bottom end didnt affect top end, but would still run out of power @ 5000 rpm. Next thing we did was add a cold air scoop,on this 97 Jetta there is a small grill under the bumper on the air box side of the car,we removed the grill & moved horn.Made a scoop that would fit in that opening & used a flex hose & hooked it up to the air box. The air box on the mk3 had a hot air tube that we unplugged the vacuum line that controlled the hot air inlet. The power gain was incredible & keeps pulling past 6000 rpm. This was all done very cheap with incredible gains in power. Engine is stock before the mods. next in line is a mild cam. On rainy day disconnect flex hose from air box keep rain from getting in to intake air.

When you advanced the timing did your car vibrate alot or am I running into another issue?

 

[LazarusVR6]

I would definitely do the basic bolt ons Short ram, exhaust, cams, ECU, etc.

 

[N_Flames]

When you advanced the timing did your car vibrate alot or am I running into another issue?

While replacing the timing belt i played with advancing the cam sprocket one tooth on the timing belt, had some good results. But one thing you must know before attempting advancing the cam sprocket, you must know how to replace the timing belt & set everything back in time. Because if the sprocket that turns the Dist. gets out of timing it wont run well. After installing the Ram Air System & i later installed a K&N filter that also helped. Doing all this has reduced my 0 - 70 MPH time by over 2 sec. The most expensive part was the K&N filter. Please read the earlier post to help explain the process.

 

[santi_ago96]

This thread really helps me out to cause i also have a 2.slow ..
i have not done much to the engine cus they are not reliable ... the previous owner who had it before me had it messed up!

 

[N_Flames]

The Jetta that i bought, was taken to a Mechanic in Austin Tx. his favorite tools must have been ViseGrips & a hammer. We now have it back to normal & since this was my first time working on a 2.0L VW had some trouble finding good info. Found this link that may help on installing timing belt has some good pics. Not sure what years it covers but it helped me out.
http://www.veedubz.co.za/xvforum/viewtopic.php?f=29&t=14641
Please read the earlier post to help explain the process.

 

[N_Flames]

Found some info on Eurotuner that may help us 2.0L Jetta Junkies.
http://www.eurotuner.com/techarticl...am_and_chip_upgrades/techtonics_cam_gear.html
Please read the earlier post to help explain the process.

 

[SC2.0]

OR sell the 2,0 and buy a 1.8T, VR6, or TDI

 

[N_Flames]

Here' some pics of the ram air system, the scoop is from a 1995 Jeep Laredo air box inlet. Would like to make a larger scoop, may work even better.