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We have two more drag race engines running a water boxer to air converted case by Rocky Jenning Enterprises.

Rocky has finally converted his drag race engine to this case and his son Micky has built a stout 1600cc engine to show the hondas that a stock displacement bug can still haul!
Here is a little info as they both took the cars out for the first time a little over a week ago:

Rocky's Drag Bug is running a 2873cc engine; 103.124mm (4.060?) bore and 86mm stroke.
Best 1/8th mile
6.61 & 104.65mph

Micky's Street-legal bug is running a 1600cc engine.
Best 1/8th mile
9.34 & 72mph

We expect the performance of both cars to pick up after some more tuning.

I'll update Rocky's site more over the next week or so.

Badbugtwo wrote: Rocky's Drag Bug is running a 2873cc engine; 103.124mm (4.060?) bore and 86mm stroke.

Damn, thats an awsome impressive engine, even just to look at!
Thanks for the pics and update.
What heads are those? I like the way that huge exhaust header is fixed with 3 bolts to the heads!

Very cool,
Thanks,
Walter

Here's an updated pic of Rocky's engine:

http://www.rockyjennings.com/images/sho ... 02099a.JPG
Also I made him an avatar with this pic:


You'll notice he put his 62mm Terminators on to see if they would work better than the Berg 58's and he is trying his old 2" exhaust instead of the 2 1/4" exhaust. A new three step (1 7/8" x 2" x 2 1/8") ceramic coated header is on the "to do" list.

Last time out, and first quarter mile pass with this exact combo, he ran a 10.35 @ 127mph (1/8th mile et was 6.56) mph was low as he hit the rev limiter in 4th and had to lift! Once we change 4th gear from a 1.125 to a 1.09 we're hoping for some lower 10 second passes.

His heads are Autocraft 910's that are highly modified at Rocky's shop. The three bolt flange adapters make it easier to get to the attaching nuts and have eliminated exhaust gasket failure. You can see one of the flanges a bit better in this pic: http://www.rockyjennings.com/images/sho ... 02049a.JPG

As far as Micky's car... he ran a 14.73 @ just over 90mph in the quarter.... not bad for an 1800 lb car with a naturally aspirated 1584cc engine and street tires!

I did some updating on Rocky's site.

Here's some more info on Micky's engine!

Jeff, check your PM.

Hi

2 more from the land down under.





Steve C

Very cool!
but that turbo looks a bit small and maybe only two compressors are too few
Haha,
Any specs you could share?
Walter

Anonymous wrote:Hi

2 more from the land down under.

Steve C

Pretty cool! Just out of curiosity, is either one running a waterboxer case? It doesn't look like the blown one is.

Anyway, what numbers are these bugs running?

The turbo car is definatly wbx cased and has run a flat 10 I think, still ironing out problems and the blown car runs a wasser case now and recently ran a 9.64 I think, Dont quote me on the numbers.
My rail will be running wbx case and crank and will be shooting for eights. Oxyboxers were invented down here after all!

Anonymous wrote: Oxyboxers were invented down here after all!

This will be fun: any proof with your statement?
The use of the aircooled case by the aircraft industry (Limbach in Germany i.e.) is from quite a while back as you may know, very likely from right after the introduction in the Vanagons.
Also, I have rather old magazines with german shops in there (Schiemanowitz or s/th) that build type 1 engines wth wbx cases. Oettinger even made special cranks for them in those days.

Still sure Australia was the first?

Best regards,
Walter

Thought that statement might stir someone up! Your probably right but we'll still claim the credit! I spoke to the guy who actually started doing it down here and he didnt know of anyone else doing it but said he assumed someone in europe would have tried it before him.

Anonymous wrote: Your probably right but we'll still claim the credit!

haha, you welcome to it!
I still very much like your pictures and respect the total dedication that goes into projects like those.

Be good,
Walter

Actually it wasnt me who posted the pics, I just know the guys who own them.

Hey Steve,

Do you know how long the first crankcase bearing holds up on the dubble compressor engine?

I have heard of premature failures of that specific bearing in one other (type 4) compressor engine because of the heavy one-directional load (upwards) that bearing has to endure, while it wasn't designed for such an uneven load.
So I'am curious if the wasserboxer bearing is more up to it ?

Thanks,
Walter