Getting Closer - SuperHawk Forum


Modifications - Performance Discuss aftermarket and DIY performance modifications

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Old 05-16-2018, 05:43 AM   #1  
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Getting Closer

Well...I am getting closer to completing my track bike. Pictures will paint...many words...I hope..
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Old 05-16-2018, 07:24 AM   #2  
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Wow, that's a lump of gold. Can't wait to see it all together.
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Old 05-16-2018, 12:39 PM   #3  
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Looking good!
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Old 05-16-2018, 01:51 PM   #4  
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Talking

Quote:
Originally Posted by VTR1000F View Post
Wow, that's a lump of gold. Can't wait to see it all together.
What? No stressed Goldmember remarks? Disappointed.

But it seriously it looks great, wish I had half the ambition!
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Old 05-16-2018, 04:15 PM   #5  
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Looks good to me
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Old 05-16-2018, 04:37 PM   #6  
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Hubba, Hubba! Pure cycle ****!
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Old 05-16-2018, 04:45 PM   #7  
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Schwinggggggggg! Lookin good!
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Old 05-29-2018, 04:38 PM   #8  
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wow... that's beautiful !
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Old 05-30-2018, 04:51 AM   #9  
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Hawk has Landed...but needs wings

I missed Palmer with my "Bird of Prey"....Had to use the "Black Hawk" my street bike....but hopefully it will be ready for the next ride.
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Old 07-15-2018, 08:14 AM   #10  
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Boy that is looking great! Wish you were a little closer we could do some riding I’m in central CT
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Old 07-17-2018, 08:32 AM   #11  
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Thank you 59. I am in a little holding pattern. Waiting for a chain remover/compressor. Need to get the carbs adjusted right. Will not know how much until I get the chain on...#*%!
Will be showing some more pics later.
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Old 07-22-2018, 07:44 PM   #12  
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Getting Closer

OK....moving forward with the "Bird of Prey" and setting up the carbs so the bike can run without any "Carb Farts" and Throttle Delay. Well… this got interesting… so let us start and do a show and tell.

Purchased a 6 Sigma Jet Kit and installed the 180 main jet for the front cylinder and the 185 for the rear. I bumped the needle with the nylon spacer for each carb. And kept the original pilot jets. I did NOT drill any additional hole, and I kept the original vacuum springs without cutting them.

I took the restrictor off the intake manifold rubbers and dremeled them to fit an exact match to the intake. (I have photos of this)

The engine has stage 2 cam with 11:1 high compression pistons. I have a K&N filter and have modified the air box. I set the idol mixture screw at 2.5 turns out for both carbs. All of the above were the second round of adjustments that I did. The first round was disastrous.

This is where it gets interesting. I had the engine idle low (1200), where the rear cylinder would get a “carb fart” and stall the engine. If I placed my hand lightly over the rear carb, the engine would increase in revs and the carb fart would go away. My conclusion was that the idle mixture screw needed adjusting. When I adjusted the idle mixture screw, the engine revs increased and the carb fart disappeared. I then adjusted the idle lower, back to 1200, and it would idle without any problem whatsoever. I have put a video to demonstrate on my youtube.
Carb Fart:

Carb Fart Cure:
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Old 07-22-2018, 08:50 PM   #13  
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The first time I worked on a bank of I4 carbs, the slides were going ape-****. Without the airbox, they were not happy at all. Put the airbox on as it ran and smoothed them right out. (it was a katana) Food for thought.
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