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Another custom nice engine
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<blockquote data-quote="fatcaaat" data-source="post: 201977" data-attributes="member: 1656"><p>So we're making progress. Today I got the carb in the mail. PWK26, got it all mounted up and started with 45/100 jetting. One kick and it started...and I could hardly believe it. Then oil pouring all over the garage floor from the head. Turns out I forgot to do two things...1. actually tighten the oil take off bolts...but more importantly, did not cut holes in the gasket so oil could divert through the cooler. issue 1 actually saved everything because if it had not leaked so bad, I might have just let it go and not realized oil wouldn'be be circulating to the head. I would have figured it out in a min when the cooler lines were not heating up, but happy it went down' this way. </p><p></p><p>A few things were surprising to me, besides the fact it started on the first kick and actually idled. For starters, usually when you remove all that rotating mass, you have to make the bike idle much higher, say 2000 rpm. That does not appear to be the case here. It seemed to idle ok around 1500. Now granted it's currently quite rich at idle and I need to get in there and swap that pilot. but other motors i've done with lightened flywheels and nothing else on the crank don't behave this way. That was a pleasant surprise. The other surprising item is how it sounds. Just by how it sounds, I can tell that this motor is going to be something radical. I had a Honda Nice 127cc with a takegawa 4v+r head on it. I did not touch the head and just mounted it as it came in the box. That motor topped out just about 70mph. I can tell, right now, that this motor will be faster than that one, even without riding it yet. </p><p></p><p>Before i jump the gun on the head and cylinder combo's, i'm going to ride this before I put a verdict in. If i find that I really like this setup, I will likely purchase a 56mm bore setup and put it on top of the current 142cc Nice I have sitting on the shelf, making it a 4v 152cc.</p></blockquote><p></p>
[QUOTE="fatcaaat, post: 201977, member: 1656"] So we're making progress. Today I got the carb in the mail. PWK26, got it all mounted up and started with 45/100 jetting. One kick and it started...and I could hardly believe it. Then oil pouring all over the garage floor from the head. Turns out I forgot to do two things...1. actually tighten the oil take off bolts...but more importantly, did not cut holes in the gasket so oil could divert through the cooler. issue 1 actually saved everything because if it had not leaked so bad, I might have just let it go and not realized oil wouldn'be be circulating to the head. I would have figured it out in a min when the cooler lines were not heating up, but happy it went down' this way. A few things were surprising to me, besides the fact it started on the first kick and actually idled. For starters, usually when you remove all that rotating mass, you have to make the bike idle much higher, say 2000 rpm. That does not appear to be the case here. It seemed to idle ok around 1500. Now granted it's currently quite rich at idle and I need to get in there and swap that pilot. but other motors i've done with lightened flywheels and nothing else on the crank don't behave this way. That was a pleasant surprise. The other surprising item is how it sounds. Just by how it sounds, I can tell that this motor is going to be something radical. I had a Honda Nice 127cc with a takegawa 4v+r head on it. I did not touch the head and just mounted it as it came in the box. That motor topped out just about 70mph. I can tell, right now, that this motor will be faster than that one, even without riding it yet. Before i jump the gun on the head and cylinder combo's, i'm going to ride this before I put a verdict in. If i find that I really like this setup, I will likely purchase a 56mm bore setup and put it on top of the current 142cc Nice I have sitting on the shelf, making it a 4v 152cc. [/QUOTE]
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