Interesting Compression issues.

[Tyshooter2000]

Hello everyone I am new to the forum so bare with me. I bought a new Banshee three weeks ago. The thing is pristine honestly looks like it came off the showroom floor. Starts first kick every time. I took it out riding and beat the hell out of it at the supercross track and it performed beautifully. Got it home and for shits and giggles I did a compression test. Both cylinders test at exactly 89 psi. That seems low to me but it does have stock heads stock Pistons and stock rings. Is it time for a rebuild? Or don't mess with a good thing and use her till she dies? She runs beautifully idles perfectly and doesn't smoke bad at all. Any input would be great. Thanks.

[hoppedupandcutdown]

And test with both plugs out, wide open throttle, kick until the needle stops climbing.

[Tyshooter2000]

I rented a tester from autozone

[Ducman]

Probably an issue with the test gave the low numbers, but getting an equal pressure on both sides is a good sign.  I have a similar issue with my cheap compression tester.  TDR recommended a few specific models and the craftsman compression tester was one, its affordable, about $65.

[Tyshooter2000]

Thanks guys I guess my question is nothing to worry about? I would like to get another solid year out of her before I do a complete rebuild. Think that is achievable? Especially since it is running so well?

[Tyshooter2000]

It is exactly even as well so I guess that is in its favor

[Ayesully810]

I rented a tester from autozone

I did the same and got shit numbers

Get a quality tester

If you were running 89 psi you wouldnt be enjoying your bike as much as you are I can promise you that haha

Quality tester is the way to go Congrats on the new bike and welcome to the site! 

Edited March 9, 2017 by Ayesully810

[n2otoofast4u]

run it!

[Tyshooter2000]

Thank you gentlemen. I went back to banshee after running a ltz for many years. Just am a lover of two strokes. So since my bike is probably good to go my next idea is to get some Vito's cool heads and a oversized radiator and high performance water impeller. What are your guyses thoughts?

[bigweav81]

Go for a head that doesn't require stud removal / changing. Noss, chariot, or driveline....if your head hasn't been milled they can cut your stock head. Look into it.

 

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[Ayesully810]

I didnt see you mention your mods.

You def want a set of good pipes.

Edit: If you dont already have some

Edited March 10, 2017 by Ayesully810

[Tyshooter2000]

Hey Tony my bike is as follows... 2002 Banshee full FMF turbo core 2 exhaust FMF ram Reed carrier. 2 to one Trinity racing manifold Keihin 42 mm carb boysen racing reeds.

[bluebanshee98]

For a oversized radiator look on eBay. Going to be around 65-75 bucks. Price has gone up over the years. They work great and well worth the money. I got a couple for like 55 bucks a peice a few years ago with no issues to this day

[Tyshooter2000]

Thank you blue that is what I will do then. I will get the radiator off eBay and all the supporting mods and do a complete rebuild in a year or two. Blue do you have a set of cool heads as well? Or do you think a high volume water pump and radiator are enough? I live in Michigan so it isn't like Arizona temperatures.

[RagunCajun]

ebay radiator and aftermarket pump here as well. Works great. I didnt go with the fancy silicone hoses. I use the cheap black NAPA stuff out of principle. Radiator and pump should be enough when tuned properly and you keep moving.