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1 stud build
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11723
Location: PacNW

PostPosted: Sun May 09, 2021 5:22 am    Post subject: Reply with quote

I feel like these motors benefit from longish runners, and that shorty runners with ITBs will hurt drivability.

But, as some may point out, WTH do I know?



Looks like a fun build.
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Juho  



Joined: 03 Oct 2018
Posts: 377
Location: Finland

PostPosted: Wed May 12, 2021 6:48 pm    Post subject: Reply with quote




3dprinted velocitystacks and adapters for zzr600 carbs
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Juho  



Joined: 03 Oct 2018
Posts: 377
Location: Finland

PostPosted: Fri May 14, 2021 5:18 pm    Post subject: Reply with quote

cant get bike carbs to run good, rpms dont go back to idle after pressing gas, ive checked for air leaks with brake cleaner and cable is good, any idea what could cause this?
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safe  



Joined: 18 Mar 2017
Posts: 583
Location: Sweden

PostPosted: Fri May 14, 2021 5:45 pm    Post subject: Reply with quote

Vacuum leaks
Idle screws to far out
Throttle plates not not closing enough, there is an adjustable stop I guess. The plates should not close completely just shy of touching the bore, otherwise there will be wear on the bore.

Have you synchronised them? its sort of a bitch to get all the throttle plates and idle screws the same and get them to draw the same amount of air. You will need a set of 4 vacuum gauges for this or an old school "thing" you put in the bell mouth. https://www.amazon.com/s?k=carburator+balance&ref=nb_sb_noss

Look up a workshop manual for the bike, it will have a section on balancing the carbs.
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Juho  



Joined: 03 Oct 2018
Posts: 377
Location: Finland

PostPosted: Fri May 14, 2021 11:39 pm    Post subject: Reply with quote

Ordered this https://www.amazon.com/gp/product/B003LIX3WK/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1


New adjustable needles, 160 jets and rebuild kit, hopefully i get the car to run good with these
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Juho  



Joined: 03 Oct 2018
Posts: 377
Location: Finland

PostPosted: Tue May 18, 2021 5:02 am    Post subject: Reply with quote



Cleaned carbs today
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Juho  



Joined: 03 Oct 2018
Posts: 377
Location: Finland

PostPosted: Fri Jul 09, 2021 11:44 pm    Post subject: Reply with quote

Ive had lack of motivation working on this car because things havent worked out.....

Im preparing to 3dscan the car once my adapter cables arrive from china and start working on the bodykit.
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Juho  



Joined: 03 Oct 2018
Posts: 377
Location: Finland

PostPosted: Sat Jul 10, 2021 7:14 pm    Post subject: Reply with quote



Flares are going to look something like this, heavily inspired by prod d
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morghen  



Joined: 21 Jan 2005
Posts: 8868
Location: Romania

PostPosted: Sun Jul 11, 2021 2:43 am    Post subject: Reply with quote

Very cool!
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Juho  



Joined: 03 Oct 2018
Posts: 377
Location: Finland

PostPosted: Thu Jul 22, 2021 3:02 am    Post subject: Reply with quote

Dont be too harsh on my fusion 360 stuff, ive learned everything by myself so its kinda bad. This is my itb setup for some gsxr itbs, including trumpets, adapters and baseplate, still working on Plenum

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Mike9311  



Joined: 14 Dec 2004
Posts: 1678
Location: Chicago-ish

PostPosted: Sun Jul 25, 2021 12:03 am    Post subject: Reply with quote

Awesome!
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jacobroufa  



Joined: 18 Nov 2016
Posts: 529
Location: Belvidere, IL

PostPosted: Sun Jul 25, 2021 3:36 am    Post subject: Reply with quote

Juho wrote:


Flares are going to look something like this, heavily inspired by prod d


This is sweet. D-prod are very mild flares (compared to GTR) and this looks like a very elegant extension/evolution of that idea. What is your plan to take it from design to reality? I would be really curious to see a rendering of that lip that extends forward of the front flare on a 924, if that's possible.
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Juho  



Joined: 03 Oct 2018
Posts: 377
Location: Finland

PostPosted: Mon Aug 02, 2021 4:02 am    Post subject: Reply with quote



3dscanned today, got only half of the car because it started raining and the quality is pretty bad cause i scanned from pretty far away, but i can still use this to start making the flares
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morghen  



Joined: 21 Jan 2005
Posts: 8868
Location: Romania

PostPosted: Mon Aug 02, 2021 7:10 am    Post subject: Reply with quote

First, wow, technology has come a lomg way since i was a kid in the late 80s and 90s, second, your 924s rear is very low
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Juho  



Joined: 03 Oct 2018
Posts: 377
Location: Finland

PostPosted: Mon Aug 02, 2021 7:13 am    Post subject: Reply with quote

Yeah haha, i actually used a xbox 360 kinect to scan which i got for free , the scan quality would be way better if i held it closer to car.

https://www.youtube.com/watch?v=-cdE4C-wvK0
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