Stromaluski

I'm Andrew, I've been into VW's and cars in general for years, but never knew much about rotary engines. I recently picked up a '66 bug that has had a 13b stuffed in it years back, though; so here I am. It hasn't been driven in nearly 10 years, but we have had it running long enough to know that the carb needs replacing. So I'm going to do that and give it a full tune up at the same time. The first question I have is what the hell do I have? The bug I know like the back of my hand; but the 13b, I don't have the first clue about... I've been doing a bunch of reading up on Rotaries, but I can't seem to find what year would this have come out of?

Sgt Fox

iTrader: (3)

Thats really pretty neat. I hope you are premixing two stroke oil with your fuel though, as it does not look as though there is any operating oil metering pump.

rxtasy3

iTrader: (2)

i would guess 76-78 yr model engine.

Stromaluski

Yep, it is running pre-mix only. That's one thing that the guy I bought the car from did tell me about before he sold it to me.

When did they start making the 13b? I thought I read that '84 was the first year for it?

96slo46

Considered doing this myself. Very nice.

Robert-Mercer

That is pretty slick

slideways14

bugs with rotors are nasty

poopyii

nice bug you got

Grappler

iTrader: (6)

First civics and VW bugs boy what next ? I must say though that looks really cool, welcome.

replica7

cool car!

FixableUnknown

iTrader: (8)

Wow that brings back memories. I had a 13b in a 1973 chop top bug. You have a potential street monster. The engine is an old 4 port 13b. The intake is set up for a webber 48ida. The adapter plate to mate the engine to the tranny is probably made by Kennedy engineering along with the special flywheel. The starter should be from a 6 volt bug because the 12 volt wont spin the engine fast enough. Cooling was the big problem with mine, which I eventually solved by running copper tubing through the heater ducts on the side of the floor pans. I ran a chevy radiator to the front of the car and made cooling ducts through the fiberglass front end. Good luck with the car. If I can be of any help let me know.

FixableUnknown

iTrader: (8)

I forgot to add about the carburetor. If it is a Webber 48ida you might want to try to rebuild it as they are very expensive carbs. Some of the vw conversions ran a custom Webber 48 that was bored to a 51mm, you may have that carb. And I agree about the oil premix, you will definitely have to add oil to your gas tank.

dregg100

iTrader: (34)

im a local rotorhead if you need someone to come take a look at it. send me a pm

wmelon137

I've been working on a very similar swap myself. I'd love to see some pictures of how your exhaust is routed.

red87tll

iTrader: (4)

that the motor is a 13b from what looks to be a s4 rx-7 that has been converted to carberation and a 12a dizzy.. idk just what it looks to me...

jjolly3

That is a very cool application. Keep us posted on your progress with the car.

SethRogen

very nice vw, im a watercooled guy myself (mk2)
and have owned 9 first gens in my short driving career.

13bna83

hey mate, looks to be an RX4 type block.

bo0557

iTrader: (1)

Here is a friends ROTORBUG in the UK - running a 13b bridge port, 48 IDA webber and close ratio VW box..

http://www.exile-rotorsport.com/viewtopic.php?t=315

alerx7

thats freakin awesome,, bugged out rotor

rxtasy3

iTrader: (2)

it's a 4 port 13b. puts it in the 74-78 yrs. the lettering puts it 76-78 repu or cosmo. the rx4 13b 74-75 had "MAZDA" in larger letters and framed.

herrafass

iTrader: (6)

Fixableunknown is right, 4 port 13b. 84 was the first year for a 13b in an rx"7", though not the first for 13b use in a mazda.
Nice ride. My wife has been talking about building one. I say only if she goes with a big single turbo.

nanaimorotard

Im pretty sure it the 13b came out with the rx3. she is a chunky rx2 <3

FixableUnknown

iTrader: (8)

That looks like a Racing Beat manifold. We tried a blow through turbo setup with one of those. It worked but hard to tune and even harder on the vw tranny.

Stromaluski

Took me a bit to get back to this, sorry about that. I had a really busy week last week. The manifold is an IDA manifold. It actually had a 48 IDM (predecessor to the IDA) on it when I bought it that I just sold on eBay. I'm going to buy a new IDA to go on it to replace the IDM. As for the engine, it's not looking too good at the moment... I posted this thread about it as I started doing a little bit of maintenance.

https://www.rx7club.com/1st-generation-specific-1979-1985-18/rusty-coolant-passages-13b-820769/

I'm actually on my 3rd mk2 right now as well. I've got a vr6 swapped '90 Jetta Coupe as my daily driver.