20b fitment in 2nd gen

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Old 10-13-03, 10:09 PM
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20b fitment in 2nd gen

is this at all possible? ive been into hondas forever and now just start wanting more power and something different.... thats when i thought of the rx7... i know a little about rotorys but not enough to start making mega power from such a small motor. ive kept my eyes out for an fc for a while now but im waiting on making my last payment on my accord. is there anything i should know about the fc before i buy one? thanks for your help
Old 10-13-03, 10:43 PM
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At the top of the page, there is a complete buyers guide for FC's. I would reccomend a t2 and not a 20b, unless you have the money, they are quite expensive.

Berni "The Man" Maxwell
Old 10-13-03, 11:10 PM
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Yes! Check out my sig and my website. This is not a project for the faint of heart. With very few exceptions, each 20B conversion is a one off. That means you need a variety of things. The first is a big fat wallet, the second is patience (almost everything needs to be fabbed), and oh yeah, either you or someone who you know (and is willing to help) has an intimate knowledge of the rotary world.
Old 10-14-03, 12:00 AM
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Re: 20b fitment in 2nd gen

Originally posted by 20Bforme
is there anything i should know about the fc before i buy one?
If you REALLY want a 20B-powered car:
1) Start with a TurboII or 10th Anniversary model. They are only a few hundred dollars more than a non-turbo car in the same condition, but they include the heavier transmission, driveshaft, limited slip differential, and halfshafts, which will handle a stock-turbo 20B-REW fairly well.
2) Plan on spending $20,000 to $35,000 on the conversion. You can perform a very basic (200-300hp) conversion for about $10,000 plus the price of the car if you have access to an auto shop, fabrication equipment, and a rotary engine guru who can help you.
3) There is a ready-built convertible 20B FC for sale. It is professionally built, and is selling for much less than it would cost you to have it built.
http://www.efini.net/rx7s4sale.htm

If the pricing has scared you off, then you would probably prefer a Turbo II with the stock 13BT engine. You can make it into the 13's with about $500 in ghetto modifications. You can always upgrade the turbo later if you would like.
Old 10-14-03, 01:50 PM
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now youve got me thinking... maybe ill just stick to the turbo II and upgrade from there... well first things first... i have to get the car
Old 10-14-03, 06:29 PM
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http://fc3spro.com/TECH/SWAP/COSMO/20b.html
I'm still changing some of the details...


-Ted
Old 10-14-03, 08:21 PM
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thanks ted... thats exactly what i was looking for!!!
Old 10-15-03, 03:55 PM
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I know I should start another thread, but I'm too lazy...

We're looking to make an FC3S specific front sway bar for the FC3S that'll CLEAR the 20B oil pan. We're looking at pricing right now, and we're trying to keep it under $500. Stock sway bar diameter is 24mm. We're measured the RB unit at 29mm. We figure 30mm should be more than enough. Any comments?

We're also wondering if people will just buy the front bar, or if they want the front and rear? Racing Beat sells the rear bar for very reasonable price, so no sense in adding more weight to a shipping package!

The bars are going to be made from a reputable racing shop, and they bend bars up to 50mm!


-Ted
Old 10-15-03, 05:28 PM
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prolly just the front
Old 10-15-03, 06:17 PM
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I'd be interested in the bar, Ted
Old 10-15-03, 08:10 PM
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I was going to buy the rear one soon. So I will be interested.
Old 10-16-03, 12:57 AM
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Originally posted by RETed
Stock sway bar diameter is 24mm. We're measured the RB unit at 29mm. We figure 30mm should be more than enough. Any comments?
30mm might be a bit thick, but I guess it also depends on the material and the shape. The front Eibach bar is 28.5mm, and works pretty well IMO. The Suspension Techniques front bar is 28mm. For some reason I thought the RB bar was more like 28.5mm, or am I splitting hairs?

I think that most of the people who would consider a 20B FC project are sponsored, and can get rear sway bars for dirt cheap.
Old 10-16-03, 03:43 PM
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I did a quick check on the length, and it's going to be a little "longer" than the stock bent units. Thus, the little extra diameter is going to counter that. Not to mention the ~100 lbs static weight up front... Maybe get some testing in before we lock in the production at 30mm? That's add more time for an official release.



-Ted
Old 10-16-03, 05:12 PM
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i'd be all over a drop in anti-sway bar for the front.

i was searching around a few weeks ago and found a website that some guy put a ford 302 carby in his FC... he had a company make him a sway bar for his motor. i talked to him briefly, and from what i gathered, this swaybar would work for a 20b in an FC. now... just to find the links...
Old 10-16-03, 10:24 PM
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Originally posted by RETed
I did a quick check on the length, and it's going to be a little "longer" than the stock bent units. Thus, the little extra diameter is going to counter that. Not to mention the ~100 lbs static weight up front... Maybe get some testing in before we lock in the production at 30mm? That's add more time for an official release.
It may be worth just making an initial production run with the 30mm bars just to see how they work. Besides, you could also market them to 13B owners who want something slightly thicker (or otherwise different) than the current popular bars.
Old 10-17-03, 02:11 AM
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Good points...
But, I find my ST bars already great for keeping the car stable. I've already ripped out the stock bolts that hold the sway bar mounts (center), so I'm using metric grade 10.9's to hold them in for now.

Little increases in diameter greatly increase roll resistance. I think the 1mm increase is like a 3x increase in roll stiffness if I remember the math.


-Ted
Old 11-30-03, 06:51 PM
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Originally posted by RETed
I know I should start another thread, but I'm too lazy...

We're looking to make an FC3S specific front sway bar for the FC3S that'll CLEAR the 20B oil pan. We're looking at pricing right now, and we're trying to keep it under $500. Stock sway bar diameter is 24mm. We're measured the RB unit at 29mm. We figure 30mm should be more than enough. Any comments?

We're also wondering if people will just buy the front bar, or if they want the front and rear? Racing Beat sells the rear bar for very reasonable price, so no sense in adding more weight to a shipping package!

The bars are going to be made from a reputable racing shop, and they bend bars up to 50mm!


-Ted
ohhh please keep up post Ted
i am very intested, so add me to the buyer list

thanks
no need to look for a custom oil pan now
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