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

    VWVortex


    Page 1 of 2 12 LastLast
    Results 1 to 25 of 33

    Thread: best motor swap for building boosted cabriolet?

    1. Semi-n00b
      Join Date
      May 5th, 2012
      Location
      FTC, CO
      Posts
      10
      Vehicles
      86 cabby project
      05-05-2012 09:18 PM #1
      Hello I am New to vwvortex and vw ownership as well. Recently picked up an 86 cabriolet in great condition. Got the bug to build it up after driving it a few weeks and realizing it is kinda fun to drive. Just lacks a little on the get up and go. After dorking around on the net I have seen some interesting builds out there. Then found vwvortex. So hmmm. What is the best motor to swap out the 1.8 8v with if I plan to end up boosting? Would rather a supercharged version in the end. Also can anybody clear up exactly what motor (like ABA or something...) And trans I have?

      Currently:
      1986 karmann cabriolet (prod date 01/86)
      Stock 1.8l 8v
      Stock 5 speed
      1 1/2 inch spring drop

    2. Member LOVINandDUBBIN's Avatar
      Join Date
      Dec 13th, 2006
      Location
      NNJ
      Posts
      1,742
      Vehicles
      i have a few cars.
      05-05-2012 11:40 PM #2
      ide get a OBD1 aba bottom end (from a 93-95 mk3 2l), keep your head and trans and get carbs and a cam. relativly cheap (depending on how crazy you get with it), fast, loud, tunable and super fun.

      N/A all day, you have the perfect head (JH) and trans (hopefully)... to determine what type of transmission you have, look at the numbers stamped on the bottom of the bell housing next to the oil pan. The first two or three digits indicate the transmission type, with the final five digits giving the date of manufacture in the format of DDMMY. an example is 4K17083. This signifies its a GTI "4K" transmission with a manufactured date of August 17,1983, with the 8 in 1980 implied. you can have one of a number of differnt trannys vw made and threw into thier cars, some have kick ass ratios, others do not. you can find these numbers in alot of places, or just post your code and ill get the ratios for you...

      i dont like turbos (unless they are on 16v's) and superchargers are only redaly avail for VR's and swapping one of them in a mk1 is a waste of time and money...these are motor sport cars in my eyes, not retarded unbalenced cars going down a drag strip..

      keep it fun, keep it OG.... Build that 1.8 on some carbs or ITBs and have fun

      mj

    3. Member LOVINandDUBBIN's Avatar
      Join Date
      Dec 13th, 2006
      Location
      NNJ
      Posts
      1,742
      Vehicles
      i have a few cars.
      05-05-2012 11:55 PM #3
      PS- the 020 4k /9a /4y Trannys have the best gearing ratios, if you have one of thoes, with a nice head and a aba bottom your in buissness, no need for a turbo, your car weights almost nothing!

      goodluck with everything

      mj

    4. Member waterwagon's Avatar
      Join Date
      Apr 7th, 2002
      Location
      Branchville, NJ
      Posts
      2,197
      Vehicles
      '08 GTI '93 Cabriolet '89 Jetta
      05-06-2012 09:38 AM #4
      Quote Originally Posted by LOVINandDUBBIN View Post
      no need for a turbo, your car weights almost nothing!

      goodluck with everything
      What he said. My wife's Cabby is plenty fun with a n/a 16v in it. Is it fast? NO. Does it feel quick? YES!

      If you are truly hellbent on a turbo motor than just drop a 1.8T in it.

    5. Member
      Join Date
      Sep 18th, 2004
      Posts
      2,940
      Vehicles
      vw jetta
      05-06-2012 09:39 AM #5
      let me try this.best motor swap for building boosted cabriolet.

      i would say a 1.8t motor.work is involved but best start.
      A Dutty Dub
      OutCastDubs

    6. Member s2kvondeutschland's Avatar
      Join Date
      Mar 19th, 2011
      Location
      Fayetteville, NC
      Posts
      1,040
      Vehicles
      '87 735i, '06 X3 3.0i
      05-06-2012 11:58 AM #6
      G60. Trust me, it's awesome.

      Or, 2.0 16v + turbo + Megasquirt = cheap + beastly.
      "Zed's dead, baby, Zed's dead."

    7. Semi-n00b
      Join Date
      May 5th, 2012
      Location
      FTC, CO
      Posts
      10
      Vehicles
      86 cabby project
      05-06-2012 01:38 PM #7
      Sounds like the n/a is the best for piece by piece build. That will last as a daily driver (except in winter).
      Here are the numbers off the trans. Ach27114.
      Here is what I think are the numbers from the head. 026103373h.

      Anything I should know about the ABA block swap? Like cooling and oil ports do they match? And what clutch pack should I go with since I'm going to be in there anyways? Also, any ideas for the carbs and header/exhaust? Hoping for input from the tried and true.

    8. Semi-n00b
      Join Date
      May 5th, 2012
      Location
      FTC, CO
      Posts
      10
      Vehicles
      86 cabby project
      05-06-2012 09:27 PM #8
      Also will the 2.0 block have troubles fitting in my engine bay/engine mounts?

    9. Member
      Join Date
      Sep 18th, 2004
      Posts
      2,940
      Vehicles
      vw jetta
      05-06-2012 11:36 PM #9
      2.0 block fits and can use your origanal mounts
      A Dutty Dub
      OutCastDubs

    10. Member
      Join Date
      Jun 28th, 2006
      Location
      Elizabethtown, PA
      Posts
      3,995
      Vehicles
      '97 Golf (sold), '82 Rabbit 'vert, '92 Jetta VRT, '01 BMW 325i wagon
      05-07-2012 07:37 AM #10
      Quote Originally Posted by dgafninja View Post
      Sounds like the n/a is the best for piece by piece build. That will last as a daily driver (except in winter).
      Here are the numbers off the trans. Ach27114.
      Here is what I think are the numbers from the head. 026103373h.

      Anything I should know about the ABA block swap? Like cooling and oil ports do they match? And what clutch pack should I go with since I'm going to be in there anyways? Also, any ideas for the carbs and header/exhaust? Hoping for input from the tried and true.
      ACH code is one of the best transmissions, IMO, and shows as a diesel trans with the shorter final drive, but the taller ratios for 1st-5th gears inside the trans. I even prefer the trannies with the taller final drive so I'm not cruising the down the highway at 4,000 rpm at 70mph.

      Biggest question is what do you want to do with the car? Track days? Autocross? Just drive it and enjoy it? If it runs well, now, I'd just pickup another head, have it machined a little bit, maybe bigger valves, and a decent camshaft with a good catback exhaust and I think you'll have a lot of fun with a lot less work.

    11. Member
      Join Date
      Jun 28th, 2006
      Location
      Elizabethtown, PA
      Posts
      3,995
      Vehicles
      '97 Golf (sold), '82 Rabbit 'vert, '92 Jetta VRT, '01 BMW 325i wagon
      05-07-2012 07:37 AM #11
      Quote Originally Posted by LOVINandDUBBIN View Post
      PS- the 020 4k /9a /4y Trannys have the best gearing ratios, if you have one of thoes, with a nice head and a aba bottom your in buissness, no need for a turbo, your car weights almost nothing!

      goodluck with everything

      mj
      And HOLY SH!T!! Mark's still alive!!

    12. Semi-n00b
      Join Date
      May 5th, 2012
      Location
      FTC, CO
      Posts
      10
      Vehicles
      86 cabby project
      05-07-2012 09:51 AM #12
      Making a faster daily driver that can hit the track for fun in the weekends. Still wanna romp on those Hondas round town. But the biggest reason is nobody round town has one and its the current platform I have to work with. I am a mechanic by trade so the work is not that big of deal for me. It's a bang for buck issue on the motor build. Having a hard time finding carbs for it though. Found TT though. So I know where I'm getting everything else.

    13. Member rix337's Avatar
      Join Date
      Feb 11th, 2003
      Location
      Powder Springs, GA
      Posts
      4,322
      Vehicles
      93 corrado, 93 Cabby, 09 TDI Jetta
      05-07-2012 03:20 PM #13
      Although I have never tried it, I have heard by a few that trying to swap in the 1.8T is a BIG hassle. However, I do have a little experience doing the ABA lower end and a few things you will need are a hose extension for the small hose going vertically in front of the motor for the added height of the block, a different downpipe and exhaust mani which you can get the dp from techtonics tuning, exh mani from junk yard or classifieds. DP for the added height, and the mani because TT does not make a single inlet dp for this conversion sothe mani has to go. Also, the timing belt cover does not fit perfectly, but it will stay on there with a small space on the bottom. Also, you have to put a cover on the front of the block where a hole is and I cannot remember what that was about, Near where the oil filter assembly goes.

      On the flip side, I have heard the G60 is an awesome swap, but I have no experience with that one. I bet it will fly with it though.
      Tuco, there are two kinds of people in this world...the ones with loaded guns, and the ones who dig. You dig. - Eastwood

      93 Cabby 09 Jetta TDI 93 Corrado S/C

    14. Member riddie's Avatar
      Join Date
      Nov 28th, 2008
      Location
      414
      Posts
      2,357
      Vehicles
      2001 Golf 2.OMG, 89 Triple White Cabby
      05-07-2012 05:40 PM #14
      An AEB 1.8T from early B5 Passats is kinda the pinnacle of 1.8t's due to the big valves and the fact it will pretty much plug in to the bay. Wiring it seems to be another story, but I suck at electrical haha.
      See: http://forums.vwvortex.com/showthrea...light=day+swap

    15. Member
      Join Date
      Jun 28th, 2006
      Location
      Elizabethtown, PA
      Posts
      3,995
      Vehicles
      '97 Golf (sold), '82 Rabbit 'vert, '92 Jetta VRT, '01 BMW 325i wagon
      05-07-2012 05:54 PM #15
      Carbs are easy, Bike carbs, Webers, just need to choose the platform. Counterflow, crossflow (ABA), or 16V? Keep your local emissions regulations in mind while planning things. Here's the link to the bike carb thread on here:

      http://forums.vwvortex.com/showthrea...res-a-write-up!

      And here's a teaser pic of the kind of setup you can wind up with on an ABA on my '82 Cabby project:


    16. Semi-n00b
      Join Date
      May 5th, 2012
      Location
      FTC, CO
      Posts
      10
      Vehicles
      86 cabby project
      05-07-2012 08:47 PM #16
      So let me confirm this. The project in the picture is an 8v head, ABA block, trans from Mk1 golf/cabby, and Weber bike carbs? (I'm guessing the cam also. Do anything with the valves or springs?) No cylinder or rod mods in the block? Im guessing the .2 liter extra displacement is actually quite a kick in such a light car. Thanks for help on the carbs. I was having a rough time finding some. And if I needed to hold off on the carbs but build the rest, the stock intake with maybe some better flow from a mod air box would be okay? Done plenty of motor swaps but never a performance build, always oe stuff since I'm a mechanic at a full service shop. Can't wait to get going on this build!

    17. 05-08-2012 12:13 AM #17
      vr6

    18. Semi-n00b
      Join Date
      May 5th, 2012
      Location
      FTC, CO
      Posts
      10
      Vehicles
      86 cabby project
      05-08-2012 12:30 AM #18
      So im realizing that these carb setups i am seeing are on the 16v head. Anybody done the aba block swap with a built 8v head? Or should i scrap any ideas with the 8v and just do a full aba and 16v head swap??? Im going to have to do this bit by bit all while driving daily till the next stage.

      Plans so far
      STAGE1:
      Repalce stock cam with 270 from TT (still unsure if doing valves and springs or not...)
      Configure intake with larger bore and TB
      Covert rear drums to disc
      Add sway bars and strut bars

      STAGE2:
      ABA block swap keeping built head from previous stage
      Upgrade clutch
      Stiffer motor/trans mounts

      STAGE3 (cosmetics):
      Delete trim
      Add body kit from 90's cabby
      Sand, Primer and Paint

      Any Input???

    19. Member riotbeast's Avatar
      Join Date
      Mar 17th, 2008
      Location
      fitchburg
      Posts
      418
      Vehicles
      95 b4v passat vr6 ,89 vw cabriolet vr6, 95 jetta gl (parts)
      05-08-2012 08:40 PM #19
      only go vr6 if you want to have a serious build....its a lot of work....a LOT of work , if you dont care so much about being stupidly fast or out their go for the carbs....its really the most sane and the best way to utilize what you already have.

    20. Semi-n00b
      Join Date
      May 5th, 2012
      Location
      FTC, CO
      Posts
      10
      Vehicles
      86 cabby project
      05-09-2012 01:24 AM #20
      Wow... That vr6 build looks intense. For my first project I think I will stick with an ABA build. But props to you on all that work. Honestly my fab skills are lacking for that much cut and weld.

    21. Member s2kvondeutschland's Avatar
      Join Date
      Mar 19th, 2011
      Location
      Fayetteville, NC
      Posts
      1,040
      Vehicles
      '87 735i, '06 X3 3.0i
      05-09-2012 03:40 AM #21
      Quote Originally Posted by dgafninja View Post
      Wow... That vr6 build looks intense. For my first project I think I will stick with an ABA build. But props to you on all that work. Honestly my fab skills are lacking for that much cut and weld.

      EW has a VR6 mk1 kit that's on sale. It's a bolt in affair and makes the swap easy, but you need about a g for the mounts alone, which is more than what my car and G60 swap cost... Different strokes I guess.
      "Zed's dead, baby, Zed's dead."

    22. Member riotbeast's Avatar
      Join Date
      Mar 17th, 2008
      Location
      fitchburg
      Posts
      418
      Vehicles
      95 b4v passat vr6 ,89 vw cabriolet vr6, 95 jetta gl (parts)
      05-09-2012 09:31 AM #22
      Quote Originally Posted by s2kvondeutschland View Post
      EW has a VR6 mk1 kit that's on sale. It's a bolt in affair and makes the swap easy, but you need about a g for the mounts alone, which is more than what my car and G60 swap cost... Different strokes I guess.
      I really couldnt see anyone buying that kit.... If you enjoy the occasional pushing your car i do not see the OE mounting points good enough.... And as you mentioned it is a grand for their low end kit

    23. Semi-n00b
      Join Date
      May 5th, 2012
      Location
      FTC, CO
      Posts
      10
      Vehicles
      86 cabby project
      05-10-2012 02:54 PM #23
      Yeah at 1000 bucks for mount setup or days of fab work to mount a vr6 I think I'm going stick with a 4cyl build. I still can't find any info on the oil and cooling passages lining up with the 8v head and an ABA block. (But I could be looking in the wrong areas.) Before I build I wanna make sure I have most of it planned out. At least the block swap and what build on the head. Carbs and fuel delivery will come later and some threads posted above have some dang good info for the carb setups. Even got a buddy with carbs kicking it in his garage. Also, did anybody have clearance problems with 17s wrapped in 205/40r17 rubber with a 1&1/2 inch spring drop?

    24. Member CajunSpike's Avatar
      Join Date
      Mar 11th, 2009
      Location
      New Orleans, LA
      Posts
      4,309
      Vehicles
      91 Burgundy Etienne(2), 06 2.5L Jetta, 08 GTI 2.0T
      05-10-2012 03:18 PM #24
      I distinctly remember reading something that the oil passages do line up..and that you had to use a certain head gasket for it to work.....

      Read up.

      http://forums.vwvortex.com/showthrea...42-ABA-JH-Swap
      Last edited by CajunSpike; 05-10-2012 at 03:21 PM.

    25. 05-10-2012 03:33 PM #25
      curious as to why you're wanting to waste your time doing a half swap 8v with a counterflow head?

      full aba swap would be the way to go and you can easily do a mild turbo setup on that platform with better power gains vs a counterflow head with older FI. not to mention that when you're ready to step up you can go to a 16v head on a nice standalone system and see some real nice hp numbers.

      half swaps are more trouble then they are worth when retaining the outdated fuel injection and head setup. no counterflow setup on older cis is going to touch the hp numbers and reliability of a cross flow head on newer efi.

    Page 1 of 2 12 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
    •