Username or Email Address
Do you already have an account?
Forgot your password?
  • Log in or Sign up

    VWVortex


    Page 3 of 71 FirstFirst 12345671353 ... LastLast
    Results 71 to 105 of 2452

    Thread: How to build a relatively inexpensive, reliable, 'powerful' 2.0 8v.

    1. Member Prof315's Avatar
      Join Date
      Jan 5th, 2009
      Location
      Melbourne, FL
      Posts
      3,324
      Vehicles
      1992 Corrado ABA-T and MS3-Pro powered, 84 Honda V65 Sabre
      12-19-2011 06:30 AM #71
      Quote Originally Posted by ny_fam View Post
      Are these gauges the common way to tune? or are they just toys. Most of the posts I see the mention of a chip upgrade. It would seem these are blind upgrades unless you have a measured record of what the fuel is actually doing. I understand that you can use a PC to connect to the OBDI &II computers to read the air fuel ratio.
      I know that with MegaSquirt you need to use a computer to read the air fuel ratio among other values to develop the tune. But the guys with MegaSquirt running are the only ones who talk about using the air fuel ratios in their tuning.
      I consider a wideband O2 sensor an essential tool to tune with. Doesn't matter if it's carbs, CIS or standalone. With MegaSquirt and a wideband the tuning process has become crazy easy. TunerStudioMS (one of the tuning software programs for MS) has an outstanding autotune feature. Set up your Air/Fuel ratio target table, turn on the autotune function, and go drive or strap it to a dyno. Now this only tunes FUEL, you still have to deal with tuning spark tables but it still makes things much simpler.
      The Professor
      Melbourne, FL
      92 Corrado OBD2 ABA-T (BW EFR 6258) Powered by MS3Pro
      Linfert Performance: The Megasquirt guy in central Florida Like my Facebook page....
      Sandy Linfert 11/4/1991 - 5/13/2013

    2. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      12-20-2011 01:23 PM #72
      Quote Originally Posted by 911_fan View Post
      . Another thing i had was a vacuum gauge. Sounds silly, but it also aids in any potential issues you might encounter.
      I agree with that. In my Track Coupe, it had the centre console made into a gauge cluster of sorts. In it are:

      Oil PSI h20 Temp Wideband
      Vacuum Oil Temp Volts
      Pyrometer Shiftlight

      The vacuum gauge helped on one occasion, and I liked seeing it go zonkers when I floored it.

    3. 12-20-2011 01:46 PM #73
      I originally installed it for a ram air setup I was testing. Never saw any positive pressure. Not enough funds to go any further, plus ram air only takes effect above 110mph. (slightly unrealistic in every day driving conditions lol)



    4. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      12-20-2011 03:46 PM #74
      Quote Originally Posted by 911_fan View Post
      I originally installed it for a ram air setup I was testing. Never saw any positive pressure. Not enough funds to go any further, plus ram air only takes effect above 110mph. (slightly unrealistic in every day driving conditions lol)
      110?! I thought it was much lower than that. No positive pressure at all at around 40-45? I've seen so many different ram-air set ups on track cars. I'd imagine they'd be better performing.

    5. Moderator root beer's Avatar
      Join Date
      Jun 22nd, 2004
      Location
      Linthicum, MD
      Posts
      12,983
      Vehicles
      96 Golf 83 Scirocco
      12-21-2011 09:17 AM #75
      I saw gains with a headlight intake, and I only trapped 111 2x, and 112 once.

      But yea, the dailyability thing...

    6. 12-21-2011 10:20 AM #76
      Gains as in an increase of available air into the intake, absolutely. I witnessed a considerable difference on the dyno with this set-up. (the pics were actually the morning of my 142whp dyno session.)

      But as for building positive pressure into my intake manifold (boost), no dice. I never saw any sustainable positive air pressure on my vacuum gauge. And if there was, it was so minimal that I didn't see it. Positive boost pressure is less than 1% at hiway speeds. Had I more access to welding materials and more budget, I probably could have fabricated something a tad more useful and completely sealed.

      Through all the research I did, the one I was most interested in was a motorcycle magazine test of 5 bikes which used ram air to boost their top end performance. Test were done on a dyno with the aid of some pretty big fans. Although the fans didnt provide the necessary air flow that simulates 100mph+ speeds on the open road, it was enough to test the ram air capabilities of their air boxes and see the gains as a result. It was around 110mph at which outside air ramming into their air boxes overcame the pumping forces /air speed of the pistons. But even then, gains were maybe 1-2%. Its not until speeds of 300mph does ram air actually matter. Rolls Royce discovered this in the 1920's. When they adjust fueling for their engine, they saw power increases of 15%. So realistically, ram-air on street cars: Myth. Ram air on race cars: 1, maybe 2% power increase depending on speed.

      You will get more power gains by air box volume tuning. Ever wonder why our cars have more torque with the stock airbox than a CAI? Just look at the design; Built in ram horn (velocity stack) and the plastic ribs inside the box structure. All this is to increase air flow into the intake tube and control the resonant frequency of the air. Those ribs cancel out any frequencies at specific rpms to deliver a smooth, not peaky, torque curve. When people start 'shaving' the insides of their airboxes, I just laugh. Or when they remove the entire airbox and slap a cone filter right on the end of their MAF. Again, I laugh.

    7. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      12-21-2011 04:40 PM #77
      Yeah. I'd imagine you'd have to be going pretty fast and have a welded set up for ram air to create any significant amount of boost. I personally hate the whole "ram air" fad that Pontiac started in the 1990's. Ram-Air hoods on the Grand Prix GTP and Trans am, sure. But not on pick-ups, and cavaliers.. I see a ton of cars around here with "ram air" hoods. It's funny that 99% of the idiots who bought them don't even know that they aren't functional.

    8. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      12-27-2011 10:52 AM #78
      Did a little revising/editing, bumping this so people can see it and not start other threads.

    9. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      12-28-2011 10:55 PM #79
      Going to add a forced induction section tomorrow.

    10. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      12-29-2011 04:55 PM #80
      Update: Added information on FI.

    11. Member 2.slowduo's Avatar
      Join Date
      Sep 17th, 2008
      Location
      the city of wind
      Posts
      916
      Vehicles
      Cars are dumb in the city but I have two
      12-29-2011 05:29 PM #81
      Only obd1 ABA have forged crank and oil squirters.
      While good for boost not really a forged bottom end

    12. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      12-29-2011 06:49 PM #82
      Quote Originally Posted by 2.slowduo View Post
      Only obd1 ABA have forged crank and oil squirters.
      While good for boost not really a forged bottom end
      They have forged internals.. I didn't say anything about oil squirters, or obd1.

    13. Member 2.slowduo's Avatar
      Join Date
      Sep 17th, 2008
      Location
      the city of wind
      Posts
      916
      Vehicles
      Cars are dumb in the city but I have two
      12-30-2011 07:47 AM #83
      That simply is not true.
      This has been good info. But
      Obd1 forged crank, forged rods, cast pistons
      Obd2 cast crank no oil squirters
      Not being a jerk. Just the way it is
      Last edited by 2.slowduo; 12-30-2011 at 11:09 AM.

    14. 12-31-2011 06:38 PM #84
      mm well which obd2... some had squirters some didnt... i believe it was the aeg that didnt and the later avh and up did. i know my 02 avh engines.. three of them do have squirters... now as for the internals... crank is cast as are the rods and pistons. but according to intergrated engineering the stock crank is capable of 400hp without issue so spend the money on rods and pistons... also squirters can be added

    15. Member Prof315's Avatar
      Join Date
      Jan 5th, 2009
      Location
      Melbourne, FL
      Posts
      3,324
      Vehicles
      1992 Corrado ABA-T and MS3-Pro powered, 84 Honda V65 Sabre
      01-01-2012 07:19 AM #85
      The forged OBD1 ABA cranks are also about 3 lbs lighter that the obd2 cast cranks.
      The Professor
      Melbourne, FL
      92 Corrado OBD2 ABA-T (BW EFR 6258) Powered by MS3Pro
      Linfert Performance: The Megasquirt guy in central Florida Like my Facebook page....
      Sandy Linfert 11/4/1991 - 5/13/2013

    16. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      01-03-2012 09:54 AM #86

    17. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      01-08-2012 02:06 PM #87

    18. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      01-14-2012 08:31 PM #88
      Quote Originally Posted by rommeldawg View Post
      mm well which obd2... some had squirters some didnt... i believe it was the aeg that didnt and the later avh and up did. i know my 02 avh engines.. three of them do have squirters... now as for the internals... crank is cast as are the rods and pistons. but according to intergrated engineering the stock crank is capable of 400hp without issue so spend the money on rods and pistons... also squirters can be added
      This is mainly for ABA MK3 and ABA swaps. Not MK4's.

    19. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      01-19-2012 01:46 PM #89
      bump

    20. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      01-23-2012 08:09 AM #90
      ttt - this thread keeps "OMG 8V FAST PLZ" threads from popping up.

    21. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      02-02-2012 09:18 PM #91
      Bump for the forum's sake.

    22. Member MYGTI_MA's Avatar
      Join Date
      May 3rd, 2010
      Location
      North of Boston
      Posts
      4,417
      Vehicles
      '97 GTI 2.0 (v2.0) // '94 Golf 2.slow auto // '83 Rabbit Diesel
      02-04-2012 04:30 PM #92
      great thread that any noob who wants to mod the mk3 2.0 should/must read.

    23. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      02-06-2012 05:59 PM #93
      Quote Originally Posted by MYGTI_MA View Post
      great thread that any noob who wants to mod the mk3 2.0 should/must read.
      Thanks bud.

    24. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      02-08-2012 08:31 PM #94
      Quote Originally Posted by Prof315 View Post
      The forged OBD1 ABA cranks are also about 3 lbs lighter that the obd2 cast cranks.
      3lbs? Hm.. I wonder why VW didn't stick with them.. Maybe the cost of making them was higher.

    25. Member Prof315's Avatar
      Join Date
      Jan 5th, 2009
      Location
      Melbourne, FL
      Posts
      3,324
      Vehicles
      1992 Corrado ABA-T and MS3-Pro powered, 84 Honda V65 Sabre
      02-09-2012 06:45 AM #95
      Quote Originally Posted by Hurt View Post
      3lbs? Hm.. I wonder why VW didn't stick with them.. Maybe the cost of making them was higher.
      It's MUCH more expensive to forge metal as opposed to casting it.
      The Professor
      Melbourne, FL
      92 Corrado OBD2 ABA-T (BW EFR 6258) Powered by MS3Pro
      Linfert Performance: The Megasquirt guy in central Florida Like my Facebook page....
      Sandy Linfert 11/4/1991 - 5/13/2013

    26. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      02-09-2012 11:35 AM #96
      Quote Originally Posted by Prof315 View Post
      It's MUCH more expensive to forge metal as opposed to casting it.
      The obd1 cars also have a slightly more aggressive cam profile and combined with the forged crank, oil squirters, and a few other subtle differences, they had a 6400 rpm redline instead of obd2 cars that had 6200. OBD1 = lucked out

    27. 02-09-2012 12:14 PM #97
      Quote Originally Posted by Hurt View Post
      The obd1 cars also have a slightly more aggressive cam profile and combined with the forged crank, oil squirters, and a few other subtle differences, they had a 6400 rpm redline instead of obd2 cars that had 6200. OBD1 = lucked out
      I don't know where you came up with that hypotheses, but its wrong. Why do you think the OBDI cam is more aggressive? Because it has 1*/2* more duration? Bah...it has a wider LSA and a much shorter lifter than the OBDII cam. Both are designed to match the intake port design of either head to give the same hp/tq figures. Yes, you would see a variance on a dyno if you flipped cams on either head, but its nothing you would feel on the butt dyno. The switch to cast crank, single springs, non-squirters wasn't just about cost, it was also about fuel efficiency. Less rotating mass = more fuel efficient. Which was the sole purpose of the OBDII intake port redesign. Quieter, torquier low end, and better directed the intake charge where it belongs...on the center of the piston. The sacrifice of the intake shrouds was top end power...hence the cam profile difference.

      Also the rpm rev ceiling is moot...these motors stop making torque @ 4500rpms. I don't know why anyone in their right mind would rev one of these suckers past 5500rpms.

    28. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      02-12-2012 03:03 PM #98
      Quote Originally Posted by 911_fan View Post
      the rpm rev ceiling is moot...these motors stop making torque @ 4500rpms. I don't know why anyone in their right mind would rev one of these suckers past 5500rpms.
      I was only pointing out why the redline on the OBD1 cars (bubble clusters.) was a little higher.

    29. Member Grenade Gavin's Avatar
      Join Date
      Jun 1st, 2008
      Location
      Newtown, Pa
      Posts
      394
      Vehicles
      98 Jetta 2.slow
      02-16-2012 07:35 PM #99
      Bump to first page. This is an excellent thread with great info.

    30. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      02-19-2012 07:48 PM #100
      Quote Originally Posted by Grenade Gavin View Post
      Bump to first page. This is an excellent thread with great info.
      Thanks, bud.

      PS: Looking into making a good head-work section.

    31. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      02-23-2012 07:47 PM #101
      Bumping this for the forum's sake. To a MOD: Should I bother re-posting this in the MK3 forum? It's tailored toward ABA's, and a ton of "OMG 8V FAST PLZ" threads pop up there a day. I think it'd help, but I'd rather have a mod tell me. Thanks, I really hope everyone who uses this gets useful information. If you have any ?'s, feel free to PM me or post in this thread, I check it daily.

    32. Member FourEyes's Avatar
      Join Date
      Jun 11th, 2010
      Location
      Ferndale, WA
      Posts
      954
      Vehicles
      1996 2.0 Jetta
      02-24-2012 10:38 AM #102
      Quote Originally Posted by Hurt View Post
      PS: Looking into making a good head-work section.
      Looking forward to this. I really want to learn more about headwork..
      Quote Originally Posted by TheDarkEnergist View Post
      I'm here for the thread about popcorn.
      | Jetta Timeline | 2011 Epic Thread Survivor | Nevar forget |

    33. Member GloryFreak's Avatar
      Join Date
      Feb 19th, 2009
      Location
      North Carolina
      Posts
      488
      Vehicles
      05 VW GLI 1.8t, 96 VW Golf 2.0, 90 VW Corrado G60
      02-24-2012 11:53 AM #103
      Same here! Love my little aba daily
      PTE 5858 @ 27 psi - 82mm Wisecos - Brute Rods - Supertech Valves w/ Gold Cat Springs - Gonzo BT mafless - Genesis 1000cc G2 Injectors - IECVA1 Cams - IE Adj Cam Gear - Custom Intake w/K&N - HKS SSQV BOV - 42 DD 3" TB Exhaust w/No Cat - Kinetic T3 Manifold - Tial 38mm WG - VF Mounts - Walbro 255 Inline - Fozen Boost FMIC - ECS LW Pullies - I.E. Manifold w/ 80mm TB - Devils Own W/M Stg 2 - HPA SS - WOT Box - FST LW Flywheel - Nitto 555R

    34. Banned Hurt's Avatar
      Join Date
      May 3rd, 2011
      Location
      Boston, MA
      Posts
      3,846
      Vehicles
      1998 Jetta GT, 1998 GTI 2.0, 2012 GLI, 2012 GTI
      02-25-2012 08:38 PM #104
      Quote Originally Posted by FourEyes View Post
      Looking forward to this. I really want to learn more about headwork..
      I've been trying to find some good information, but I've always sent my heads to a machinist friend of mine.

    35. Member FourEyes's Avatar
      Join Date
      Jun 11th, 2010
      Location
      Ferndale, WA
      Posts
      954
      Vehicles
      1996 2.0 Jetta
      02-25-2012 08:46 PM #105
      Quote Originally Posted by Hurt View Post
      I've been trying to find some good information, but I've always sent my heads to a machinist friend of mine.
      You should talk to him.
      Quote Originally Posted by TheDarkEnergist View Post
      I'm here for the thread about popcorn.
      | Jetta Timeline | 2011 Epic Thread Survivor | Nevar forget |

    Page 3 of 71 FirstFirst 12345671353 ... LastLast

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •