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Show posts MenuQuote from: SoCal250 on July 08, 2021, 12:10:26 PMQuote from: mewherman on July 02, 2021, 12:17:49 AM
But sadly the engine failed one day and so the bike has been sitting for three years collecting bondo dust and leaking oil in the corner.Quote from: mewherman on July 07, 2021, 11:22:35 PM
I had a uni with ypipe on the bike when it was previously on the road and was running premix and I actually never changed the jetting from stock and it ran fine.
I don't think you mentioned the cause for your engine blow up, but this probably contributed. Jetting should be larger with that intake setup and premix. It was very likely lean.
Quote from: m in sc on July 07, 2021, 11:02:22 AM
if they are ported you'll have to retune from stock anyway so... might as well fit the chambers.
years ago i restored a 71 like yours, had beautiful stock pipes. I procured a set of really nice j&r pipes and put them on (chrome). Eventually i sold the bike to Tom who swore he was going to put the mint stock pipes back on that came w the bike.
He bought it back in... 07? he still has the bike and it still has the same chambers on it.
Quote from: Greaser Greg on July 06, 2021, 09:58:58 PM
The one time I did any kind of porting, it was a matter of measuring the dimensions of the ports and distance from top of cylinder. Both sides should be the same with identical angles on the edges for each set of holes. Post the numbers and someone else here will know what they mean regarding what pipes they'd be good for and where to start with jetting.
Quote from: Czakky on July 03, 2021, 08:09:39 AM
My opinion on the JL street retro's. Keep your stock pipes and have your cylinders ported. Plus I think r5s look right with stock pipes.
Quote from: m in sc on July 01, 2021, 04:39:14 PM
rock bike back and forth and let sit a bit. check on center-stand up at least level. you can fire it up real quick let it spin around, then settle and check.
i usually follow the dipstick level, never let me down yet. I aim for the middle to 3/4 when cold.
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