How much would it cost to put a 20B in an FD?

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Old Aug 25, 2006 | 07:15 AM
  #1  
iloverotors's Avatar
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From: Seattle, WA
How much would it cost to put a 20B in an FD?

I was thinking about buying a straight bodied FD and putting that beastly sucker in there. I know it's a ridiculously hard swap but I really am in love with the car. Really, I wish I could find a nice unabused 13B but too many out there have been destroyed to the point where they can't even drive anymore. Flame me, for having this aspiration, but I don't care. Or you could give me advice, be it positive or negative and I will give you whatever feedback.
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Old Aug 25, 2006 | 09:48 AM
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what would your goals for it be.
thats the biggest deciding factor for cost..
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Old Aug 25, 2006 | 11:54 AM
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20B FD|20B Cosmo|S5 TII
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up in the top right corner of your page is a little button that says "search"
its very easy to use, this question has been asked MANY times.
Welcome to the club, a bit of advice, always do a search before you start a thread asking something. more than likely it has been asked before, and there should be a good deal of information on whatever you need. Again, welcome.
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Old Aug 29, 2006 | 11:22 AM
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to actually mount it into a FD chassis? You could do it for at little at $100 with a welder. To do it correctly you're looking at 10k-15k to get it in and started, without any real supporting mods (cooling, rebuild, turbo, clutch, rear end, etc. etc. etc. etc. etc. etc.)
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Old Aug 29, 2006 | 08:17 PM
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you can take off the rear iron housing of the 20b and put on a 13b rear iron housing and use the stock fd motor mounts to just simply drop in the 20b into your stock fd subframe. this way you wouldn't need to modify your subframe, which will save you an average of 1500. the only other thing that you will need to do is get a cusom oil pan for your 20b to be dropped into your fd subframe, which can be done at most local radiator shops or places where they do custom automotive stuff at. you will also need to take your rear 13b iron housing to a place where they do porting, because the ports of the 13b are slightly smaller than the 20b ports, so you will need to match the 13b ports with the 20b's. most people port their whole 20b, so this shouldn't be a problem. as for any and all piping, you will need to get all of them done customly because nobody makes kits for the 20b. if you were to go single turbo, you will need a custom turbo manifold (which usually costs anywhere from 400 to 600, depending on who does it for you). a custom/bigger radiator is highly recommended. you will also need a full standalone ecu (microtech recommended by me because that way you will be able to use the 20b front cover and 20b oil metering pump instead of having to premix), which will cost you about 1200 to 2000 with all accessories necessary. the intercooler you can just get from ebay for about 200 (ask anyone on this forum and they'll tell you that you can trust most of the intercoolers from ebay). the alternator you can use from the 20b that you're getting. if you're going to upgrade your pulleys, you can just use the 13b upgrades. your downpipe will have to be custom no matter what, which you can get done for about 200 to 300. if i forgot to mention anything else, just pm me and i'll let you know and i'll try to find you some links to help you out. if you were looking at doing most to all the work yourself, then the project will cost you anywhere from 10 to 15 grand (depending on what parts you get and what modifications you decide to do to the internals of your engine). if you're not a handy man, then plan on spending anything from 25 to 35 grand on the whole project. if you like to get your hands dirty and you learn from experience, then this project is recommended and is pretty interesting, but if you're someone who doesn't learn by experience and doesn't even know how to twist a screw and aren't ready to spend a couple hundred on tools, then i strongly don't recommend this project (unless you've got about 15 to 20 grand to throw away and give to others to do the labor for you). sorry for the essay, hope that helped, and good luck with your choice....
-erik
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