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Post by 90GTVert on May 5, 2014 18:21:08 GMT -5
Didn't you have low compression, or am I thinking of someone else's build? Sorry, sometimes I have a tough time remembering the details of my own scoots.
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Post by Sitticuss on May 5, 2014 18:21:13 GMT -5
worn out top end?
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Post by AlexF2294 on May 5, 2014 18:22:41 GMT -5
I didnt have low compression. The engine only has 300 miles on it
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Post by 2TDave on May 5, 2014 18:24:56 GMT -5
It's probably restricted. Cvt, exhaust, or cdi or all. Or it was in bad tune.
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Post by AlexF2294 on May 5, 2014 18:25:57 GMT -5
Well it did go alot faster before i plugged the holes i drilled in the exhaust...
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Post by 2TDave on May 5, 2014 18:25:58 GMT -5
We don't know what happened in those 300 miles.
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Post by 2TDave on May 5, 2014 18:27:35 GMT -5
Does the pipe have a restrictor in it?
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Post by AlexF2294 on May 5, 2014 18:28:07 GMT -5
But it all looks fine to me. The cylinder isnt scored at all, rings look good and the head was relatively clean before i cleaned it off.
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Post by AlexF2294 on May 5, 2014 18:33:58 GMT -5
It had an ngk bpr7hs in it. Shouldn't it have an ngk bpr8hs?
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Post by 2TDave on May 5, 2014 19:18:51 GMT -5
I ran bpr6hs in a stock 50. Br9hs in my 70. I don't know what the codes are but I believe the lower number is a hotter plug.
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Post by 90GTVert on May 5, 2014 19:24:16 GMT -5
BR8HS is the most common replacement or BR8HIX for iridium. Lower numbers are hotter. 7 is probably fine. The P is a projected tip plug.
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Post by AlexF2294 on May 5, 2014 19:26:53 GMT -5
It doesn't look like it had a restrictor but it could be because everything was set up far a 49. Rollers, spring, airbox, small 14mm carb and all that...
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Post by 2TDave on May 5, 2014 19:33:40 GMT -5
What benefit would a hotter plug be. I've been worried about heat and knock.
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Post by 2TDave on May 5, 2014 19:37:05 GMT -5
The pipe may have a washer welded in it at the header or just before the can. The variator may have a restriction spacer or the cdi a looped wire coming out and going back in.
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Post by AlexF2294 on May 5, 2014 19:38:46 GMT -5
There wasn't a spacer in the variator when i had it pulled apart
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