Dynamite 12spd. maybe why they don't have good rep.
08-21-2005, 12:16 AM
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Dynamite 12spd. maybe why they don't have good rep.
I purchased a used Dynamite 12spd from E-bay as an extra, so it sat around for a while before I got around to taking it apart for porting. When I did get around to it, I saw by the staining that the index pin groove in the sleeve was off. I have had 2 of these engines in the recent past, and this is the first I have seen this, but if this was a random problem in the machining, then I can understand why some ppl say that it's underpowered. I haven't run one without the porting done in a couple of years, so I don't have any reference to that, but I think it has plenty of power after the porting. This time around is the most material I have removed from a sleeve, so I am looking forward to seeing how it performs. I think I will put in my buddies XXX-NT to test it out.(his engine is shot and he hasn't picked one out yet, so I got no-one to play with[:@])
I will post again prob next weekend after I run it.
The middle notch is centered
The set of four notches in the button are centered on the exhaust port
I will post again prob next weekend after I run it.
The middle notch is centered
The set of four notches in the button are centered on the exhaust port
08-21-2005, 01:18 AM
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RE: Dynamite 12spd. maybe why they don't have good rep.
My only concern would be, if I remove too much material and make the sleeve too thin near the ports, am I going to change how the sleeve expands enough to cause problems?
Maybe prone to cracking from heat cycling? Anybody with any thoughts?
Maybe prone to cracking from heat cycling? Anybody with any thoughts?
