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Post by yar1993 on Oct 9, 2021 22:01:16 GMT -5
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Post by Zino on Oct 9, 2021 23:40:21 GMT -5
Looking good
It is so much easier when you take the engine off the scoot like you did .
Keep the pictures and updates coming.
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Post by yar1993 on Oct 11, 2021 14:42:15 GMT -5
I’ve got it in working on some trans tuning and jetting today.
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Post by yar1993 on Oct 11, 2021 14:44:58 GMT -5
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Post by yar1993 on Oct 15, 2021 11:31:29 GMT -5
Working on putting on a temp gauge now was wondering what I should be looking for in temp? Also the compression test was from the old set up the new was just a little more.
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Post by Zino on Oct 15, 2021 15:25:41 GMT -5
350 is the upper limit that most guys use as the upper level for the temp to touch.
My roughie is happy at levels right around 300 degrees when I run wide open for a 3-5 mile stretch.
The Vinos are 310-300 same wide open test
The Zuma with a hotter cylinder and pipe would get closer to 340
Most of the other builds are just above or below 300
I tune by throttle feel and performance .
I just use the temp gauge for day to day health good way to catch air leaks early
I just watch for temp spikes and I want to see the temp level somewhere below 350 degrees on wide open runs .
And for temps level off a notch less than wide open temps at part throttle .
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Post by yar1993 on Oct 15, 2021 15:38:10 GMT -5
350 is the upper limit that most guys use as the upper level for the temp to touch. My roughie is happy at levels right around 300 degrees when I run wide open for a 3-5 mile stretch. The Vinos are 310-300 same wide open test The Zuma with a hotter cylinder and pipe would get closer to 340 Most of the other builds are just above or below 300 I tune by throttle feel and performance . I just use the temp gauge for day to day health good way to catch air leaks early I just watch for temp spikes and I want to see the temp level somewhere below 350 degrees on wide open runs . And for temps level off a notch less than wide open temps at part throttle . I took it out for the first time with the temp gauge and hit 367F at WOT for about a 1/4 mile think I have a 90 main jet don’t have any idle jets yet feel like it’s running pretty rich though. |
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Post by yar1993 on Oct 15, 2021 15:42:30 GMT -5
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Post by yar1993 on Oct 15, 2021 15:47:45 GMT -5
350 is the upper limit that most guys use as the upper level for the temp to touch. My roughie is happy at levels right around 300 degrees when I run wide open for a 3-5 mile stretch. The Vinos are 310-300 same wide open test The Zuma with a hotter cylinder and pipe would get closer to 340 Most of the other builds are just above or below 300 I tune by throttle feel and performance . I just use the temp gauge for day to day health good way to catch air leaks early I just watch for temp spikes and I want to see the temp level somewhere below 350 degrees on wide open runs . And for temps level off a notch less than wide open temps at part throttle . I took it out for the first time with the temp gauge and hit 367F at WOT for about a 1/4 mile think I have a 90 main jet don’t have any idle jets yet feel like it’s running pretty rich though. Also still running with the plug that recommended for stock not sure if that makes a difference malossi recommends a different one just haven’t got anything yet. |
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Post by Zino on Oct 15, 2021 17:08:49 GMT -5
Thc correct plug for the malossi head is a NGK BR8HS .
Some guys may run a NGK BR9HS with a hotter pipe .
You are running a ngk bpr7hs .
The Ngk Br8HS It is one step cooler and also you no longer need a projected tip spark plug that is what the p stands for.
This might put the spark plug too close to the piston head .
I would not run it with the wrong size and wrong heat range .
The correct plug will run cooler .
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Post by yar1993 on Oct 15, 2021 17:22:27 GMT -5
Thc correct plug for the malossi head is a NGK BR8HS . Some guys may run a NGK BR9HS with a hotter pipe . You are running a ngk bpr7hs . The Ngk Br8HS It is one step cooler and also you no longer need a projected tip spark plug that is what the p stands for. This might put the spark plug too close to the piston head . I would not run it with the wrong size and wrong heat range . The correct plug will run cooler . Really appreciate the info I’m going to order some now. |
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Post by snowmeiser on Oct 15, 2021 18:16:21 GMT -5
Your cylinder is new and still pretty rough which would generate a little more heat until it get polished up a bit. Another thing I have noticed with mine is if you lug the motor a little the temps climb. I would try 1/2 gram lighter weight and see if the temps drop. Tachometer is key along with temp gage.
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Post by Zino on Oct 15, 2021 20:46:17 GMT -5
Snow and I had similar experience with variator weights the roughies above 8000 rpms run cooler than at 7500 rpms at wide open throttle .
snow believes it might be the ignition curve .
It might the fan is just more efficient at pulling heat away from the cylinder at those rpms
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Post by yar1993 on Oct 16, 2021 22:27:23 GMT -5
Got the plugs haven’t put them in yet but just picked up a 04 zuma don’t no much about them but excited about it.
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Post by Zino on Oct 17, 2021 8:07:46 GMT -5
zuma is a good platform easy too find parts and work on .
2004 model has a fully adjustable carb needle and air screw .
start a thread for that one when you get to building it alot of zuma guys on here.
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