Boosting a WBX

[knox]

Hi guys, I have been lurking here for a while and reading up on boosting a WBX. I am primarily an aircooled mechanic tho I do work on WBXs here at the VDub shop from time to time. I have access to tons of 1.9 and 2.1 motors and parts from different VW models. I want to do this rather cheaply and use this motor as a test bed for different ideas.
I am looking for around 180 Hp with up to 15 pounds of boost. I imagine this is as far as one would want to go with stock parts.

There are still a few questions that I have and i am open to any ideas. what would be there better motor for the build, the 1.9 or 2.1?

What can be interchanged on these motors to achieve the best combinations of parts?

Can i use the stock fuel system or is there some other Vw setup that could be interchanged.

I need to be able to fit the flywheel into my super beetle, so can use a smaller flywheel (ie. the 914 200mm) i think maybe this will bolt up and allow use of a type1 clutch setup?

What size turbo should i use, it would be nice to find something at a junkyard as there are 3 in my town.

I am sure i will have more questions so please put up with me. I have a mountain of parts at my disposal so i just needs some ideas worked out for me to get to work on this project.
thanks
knox

[Piledriver]

There are still a few questions that I have and i am open to any ideas. what would be there better motor for the build, the 1.9 or 2.1?

What can be interchanged on these motors to achieve the best combinations of parts?

Can i use the stock fuel system or is there some other Vw setup that could be interchanged.

I need to be able to fit the flywheel into my super beetle, so can use a smaller flywheel (ie. the 914 200mm) i think maybe this will bolt up and allow use of a type1 clutch setup?

What size turbo should i use, it would be nice to find something at a junkyard as there are 3 in my town.

I am sure i will have more questions so please put up with me. I have a mountain of parts at my disposal so i just needs some ideas worked out for me to get to work on this project.
thanks
knox

The 2.1 heads flow better, and has slightly larger chambers...assuming they are the originals. The 1.9 has better rod bolts that are reusable, and the rods are likely to be in better shape.

The 914 flywheel is forged, but you will have to have the ring gear machined back to the same lenghth as the std ones or it will hang up.
(I have not personally tried this, but it looks easy...)

It will also require a HD 914 215mm Porsche pressure plate.($$$)

If you are planning on pushing that much power, consider upgrading to a Bus transmission/944 CVs/axles and stubs... The 228 fits in those with little>no work, and the axles/stubs bolt in. Late Bay bus ones (6 ribs) wil work easiest/best, but NOT a Vanagon tranny, as the shifter setup is totally different.

Match the turbo to the desired power output, 180 HP calls for a comon ~T3 of some sort, there is an interactive "turbo calculator" on motorgeeks.com that is handy for what-ifs.
(Saabs/Volvos make a good source)

The stock 228 PP with a reasonable disc could almost support 180 HP if the PP mounting surface is cut back an extra .010 or so, a stage 1 from Kennedy would probably do fine.

For an effective junkyard FI, try to acquire a CIS system off a running/wrecked Saab or Volvo turbo. Get EVERYTHING, even if you don't now what it is yet.

[david58]

Junk Yard Turbomania Here is a little info that will help you.
http://www.shoptalkforums.com/viewtopic.php?t=116077