Wompus Results are In!

[No Limit Powersports]

Ok guys here is the deal. We have had our 4mm stroke 68mm bore 421 wompus cylinder done for a few weeks. We have took it to the dunes at little sahara 2 times now and only got called out by one person that it wasnt a stock cylinder. We were telling everybody it was not to try and be sneaky but by Calvins request to see how many people would really be able to catch it. The motor had every opportunity to be caught in a full Stellar chassis and 2 out the left out of frames it was easy to see. Lots of lookers and lots of comments on the way it run people just couldnt believe it was a stock cylinder lol!

 

My honest opinion of the motor is this. Its exactly like a cub power wise and installation. Our little test said it all for me as far as looks goes as almost no one was able to tell. We did dyno it just like we dyno all of our 4mm cubs and the power was right on par. This was a fully drag ported wompus with shearer pipes lectrons on alky and so on just like we do on our cubs.

 

Here is the dyno chart and pictures of installed on the bike. Also want to add that Calvin is finishing up a stock appearing head with interchangeable domes that looks exactly like stock and will use most mfg domes.

 

Good Job Calvin!!

 

 

 

[Phelps]

heh i noticed right off the bat, but i was sitting eye level with the motor. i will admit though i had to look twice. good job!

[n2otoofast4u]

At first look at those pictures, it looks like the transfer area and the exhaust area is push/pulled/bloated a bit, but its hard to see much in those pictures.

[No Limit Powersports]

No more than some do to a stock cylinder when welding that area. They are but unless holding a stock cylinder right next to it its really difficult to tell

[J-Madd]

Ok guys here is the deal. We have had our 4mm stroke 68mm bore 421 wompus cylinder done for a few weeks. We have took it to the dunes at little sahara 2 times now and only got called out by one person that it wasnt a stock cylinder. We were telling everybody it was not to try and be sneaky but by Calvins request to see how many people would really be able to catch it. The motor had every opportunity to be caught in a full Stellar chassis and 2 out the left out of frames it was easy to see. Lots of lookers and lots of comments on the way it run people just couldnt believe it was a stock cylinder lol!

 

My honest opinion of the motor is this. Its exactly like a cub power wise and installation. Our little test said it all for me as far as looks goes as almost no one was able to tell. We did dyno it just like we dyno all of our 4mm cubs and the power was right on par. This was a fully drag ported wompus with shearer pipes lectrons on alky and so on just like we do on our cubs.

 

Here is the dyno chart and pictures of installed on the bike. Also want to add that Calvin is finishing up a stock appearing head with interchangeable domes that looks exactly like stock and will use most mfg domes.

 

Good Job Calvin!!

 

 

 

 

 

That looks more like my 10 mil graph with that low peak, except yours has about 5 more hp. Shouldn't it rev out a few hundred more rpms?

 

Can you get these in a casting with port timings like the Serval? I'm thinking Wompus on a stock frame trail bike.

[No Limit Powersports]

Between 9200 and 10000 is typical peak it was withing 1 hp of peak all the way to 9600 so its a good reving motor imo. If i would have loaded the bike a bit more it would have peaked higher. The wompus is available with serval or cub timings.

[zachass9]

Great work Andy, it looks and runs killer!!

[madjimmax]

Do you have a kit price on them with serval timing ? They look pretty bad ass

[No Limit Powersports]

The wompus is 975.00 so basically a 100 more than a cub.

[okbeast]

I realized a little after you said it was just a stock cylinder at Spring Break it was probably a wampus. Very impressive numbers.