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Old 05-04-2008, 11:23 AM   #1
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Default Questions about Sportwerks 21V2

I am going to try out a Sportwerks 21 V2 bumpstart engine and had a few questions.
My plan is to use a Dynamite 086 pipe. Is this an OK pipe for the engine, for overall performance?
What thickness of shims come stock with the engine? I plan on running 30% Tilted fuel. Do I need to add a shim? If so, what thickness?
I would like to understand if there are any weak points to this engine that I should be aware of (ie carb leaks, bearings NG) so I can try and fix them.

How is the reliability of this engine compared to the higher dollar motors? Is this engine fairly ease to tune?

I may also try to do some port work myself on a 21 V2 at some point. If anyone has done (or had done by someone) porting on the sleeve (or work on the crank) with good success, could you please post pictures.

Thanks
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Old 05-04-2008, 04:42 PM   #2
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SEAL IT UP !! great engines , I use 20 byrons gen 2 and remove small shim after break in . The bearings will last forever , swiss made ! Been running these for 3 + years , Made by SH with sportwerks name , the dynamite line is practically the same
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Old 05-04-2008, 06:44 PM   #3
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The engine is shimmed correctly so you won't have to worry with that.
I recommend you run the 7.5 venturi and the Dyn 053 pipe set. The engine likes that pipe better then the 086. The bottom will be alittle soft with the 086.
Run the DYN number 4 or 5 plug, the 4 is medium the 5 is cold.

The mill is a great buy and will perform the same or better then high end engines, I think you will be very happy with it.
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Old 05-04-2008, 06:46 PM   #4
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also try the dynamite 007 pipe.. it will give the engine more low end grunt if you run on a track that needs it.
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Old 05-14-2008, 05:08 PM   #5
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How much better is the 053, 086 or 007 compared to the stock pipe it comes with??
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Old 05-14-2008, 09:00 PM   #6
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Mine is faster than a shadow but it will only get 5.5 minutes of run time. I cant figure it out, I even tried the 6mm venturi. Its a rocket but it sucks gas like one to. Any tips.? I'm running the JP3 and the JP2 no difference with either pipe.
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Old 05-15-2008, 03:15 AM   #7
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You will be very happy. By far the most reliable engine I have run. And you will NEVER find an engine easier to tune IMO. I may have to try the 053 as I was running the 086. I was temping at 220 after 10 min main. Good smoke too. I had a team driver tell me the motor sounds like it rips. SHHHH dont tell everyone LOL!
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Old 05-15-2008, 03:32 AM   #8
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Honestly... For the money, the sportwerks motors are a STEAL! I would recommend a JP-2 pipe cause the sportwerks motors have bottom end ALL OVER THE PLACE but lack a lil top end compared to $250+ motors, so ya might lose on the straight... But with the JP-2 it will tame down the squirliness of the bottom end... Good Luck! And dont tell anybody about "our little secret"...
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Old 05-15-2008, 06:33 AM   #9
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Thumbs up Get a good 3 chamber for run time.....

For run time, we have been very successful running the RB2045 pipe. It tones the bottom just a little but it wakes the top end up and gives the longer run times.
Going to try the Associated 2035 next.
We are getting right around 10 gallons on these engines. 9+ minutes of run time. Really don't get outmotored either.
Best for the money IMO.

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Old 05-15-2008, 02:37 PM   #10
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How is the Dynamite 086 pipe on the V2 for runtime and overall performance?
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Old 05-15-2008, 03:16 PM   #11
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I was running 7 min qualifiers with about 1/2" of fuel left in the tank @ 230
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Old 05-15-2008, 04:32 PM   #12
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I ran mine with a JP-2 and get 8 1/2mins on a tank of fuel in my buggy. Furthest I pushed it was 8 mins 45 secs.
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Old 05-15-2008, 05:35 PM   #13
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Is this mill powerful enough for a truggy? I want to put a .21 in it but dont have high end $.
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Old 05-15-2008, 06:23 PM   #14
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Quote:
Originally Posted by tex1 View Post
For run time, we have been very successful running the RB2045 pipe. It tones the bottom just a little but it wakes the top end up and gives the longer run times.
Going to try the Associated 2035 next.
We are getting right around 10 gallons on these engines. 9+ minutes of run time. Really don't get outmotored either.
Best for the money IMO.

TEX
Do you think it could be the out side temp? Its been in the 60's. Running a but fatter for tuning temp. Last year it was getting about 7 minutes with 9mm venturi and the temps were in the 90's. Its the only thing I can think of?
And i haven't been out motored really and thats on a huge track.
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Old 05-15-2008, 07:24 PM   #15
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Thumbs up There are a couple of things you can do......

The air is denser and harder to burn. Run a pipe that will let the engine breath, go down to 7mm on the restrictor (get a 6.5 and drill it or open it slightly with a dremel), and lean her out with a hot plug. I have been running the Odonell sport plugs in red and the OD77s and they work perfectly.
This will clean her up when the air is hard to burn.
TEX
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