Search found 10 matches

by daveyg
Sat Sep 15, 2018 1:04 am
Forum: Technical Discussion
Topic: Any performance CB650SC builds?
Replies: 3
Views: 116

Re: Any performance CB650SC builds?

Just wondering why nobody else has done it yet (that I can find)
by daveyg
Sat Sep 15, 2018 1:03 am
Forum: Technical Discussion
Topic: Any performance CB650SC builds?
Replies: 3
Views: 116

Re: Any performance CB650SC builds?

I have a milling machine and a lathe and access to a small foundry and 3d printer. All it takes is free time hahaha
by daveyg
Fri Sep 14, 2018 8:29 am
Forum: Technical Discussion
Topic: Any performance CB650SC builds?
Replies: 3
Views: 116

Any performance CB650SC builds?

Searching has been ineffective but I’m curious if anybody has built up a 83-85 650 Nighthawk. I got two of them for a song, one had a snapped rod, busted up both cases, really uglied up the crank, so I’m parting that one out, but after looking at the design from the inside it seems like the perfect ...
by daveyg
Fri Aug 17, 2018 10:40 am
Forum: Technical Discussion
Topic: CB650SC Exhaust pulses Q?
Replies: 4
Views: 374

Re: CB650SC Exhaust pulses Q?

Well, just ordered some 1.5” mandrel U bends. Should be here in 3 business days or less. Wish me luck! Haha
by daveyg
Thu Aug 16, 2018 10:57 am
Forum: Technical Discussion
Topic: CB650SC Exhaust pulses Q?
Replies: 4
Views: 374

Re: CB650SC Exhaust pulses Q?

Another oddity I just noticed... most other bikes I’ve looked up (CB750, GSXR) run 1,2,4,3 firing order. Not that it really effects my project, just curious why they’d defy convention and make the CB650 different than the 750... and to relate this back to my project, most 4,2,1 (tri-y aftermarket ex...
by daveyg
Thu Aug 16, 2018 10:21 am
Forum: Technical Discussion
Topic: CB650SC Exhaust pulses Q?
Replies: 4
Views: 374

Re: CB650SC Exhaust pulses Q?

Attached a crappy scribble of the pipes I’d like to build. Without getting too crazy and busting out some CAD work, this is roughly what I mean to do. So with every 2 revolutions of the crank, you’ll get 2 exhaust pulses close together on each respective muffler, and the head pipes for cylinder 2 an...
by daveyg
Wed Aug 15, 2018 11:53 pm
Forum: Technical Discussion
Topic: CB650SC Exhaust pulses Q?
Replies: 4
Views: 374

CB650SC Exhaust pulses Q?

So I’ve got a 1985 CB650SC that I am working on getting back on the road, previous owner very roughly chopped the exhaust off at the bottom of the header pipes, just after they turn back under the bike, and I need SOME FORM of muffler(s) to not go completely crazy. My question is sort of regarding t...
by daveyg
Fri Oct 02, 2009 8:27 am
Forum: Technical Discussion
Topic: Another Carb Problem
Replies: 4
Views: 1205

Re: Another Carb Problem

Thanks again Volker! I'll go through this puppy again. Really hope its not something wrong with any of the hard parts. Anyways I'll get everything scoped out and keep you posted whether or not I have any luck.
by daveyg
Wed Sep 30, 2009 9:06 am
Forum: Technical Discussion
Topic: Another Carb Problem
Replies: 4
Views: 1205

Re: Another Carb Problem

Thanks for the input Volker! It's greatly appreciated. What do you mean by the choke working? Do you mean the cable moving freely or whether or not it manages to do any good? Because the cable is perfectly fine... lol. I will check to make sure the pilots are all at the desired height, as well as th...
by daveyg
Mon Sep 28, 2009 1:45 pm
Forum: Technical Discussion
Topic: Another Carb Problem
Replies: 4
Views: 1205

Another Carb Problem

Bike is a 1980. Ran ok, but not great, with choke all the way out when first purchased and after a thorough carb cleaning. Then sat a year, garaged. Put in new batt, cleaned carbs again, then tried to start chopping, cut off mufflers and made custom dual 2.25" turnouts, and put on pod filters. ...

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