Hot Singles ! - Pictures

[willabee]

Whats the difference between the cow bell twister and the twister . Any pictures of the the two ?

The Twister was a exhaust silo or log that extended from cylinder #1 exhaust ports to about the center of the driveshaft housing. The exhaust was dumped inside the DSH. The Cowbell had a similar log, but it didn't extend to the DSH. It stopped at approximately the bottom of the powerhead, was open on the bottom end of the log and dumped the exhaust into a pair of outlets that resembled a cowbell, one being larger than the other.

Hopefully, the pictues below will help in describing the difference.

The yellow Molinari is running the Twister, the exhaust log continues from the powerhead down the DHS. The #22 Molinari is running the cowbell. The shape of the log changes at the base of the powerhead and you can see the beginning of the "bells".

The third photo is a drawing done by brianT2, it shows the location of the bells imposed over a Twister log. The larger bell actually belongs behind the smaller one, but other than that, he shows what a Cowbell looks like.

The last two shots are of the Cowbell during a prop change. This may very well be the first Cowbell tested on the water. I think the bells in these photos are weldments, while the bells on the engines we ran at the races were castings. There were enough castings available that I didn't have any concerns about sawing some off to test performance with different length bells.

The Cowbell was a very cool engine, with a very husky voice. I wish Merc would have decided to build them instead of the Twisters. Hell, even an offshore boat with four of those bad boys on the transom would have become interesting!