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steinb3rg
MMT Pro Member
Joined: Thu Mar 31, 2011 12:49 pm Posts: 345
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Re: DIY Mikuni kit
_________________ 17.5x48 CC w/ PD 36 Gen 3 EFI E2
"They cant put anything on the internet that isn't true." "Where'd you hear that?" "The internet"
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Wed Apr 15, 2015 3:34 pm |
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steinb3rg
MMT Pro Member
Joined: Thu Mar 31, 2011 12:49 pm Posts: 345
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Re: DIY Mikuni kit
Well I had a chance to change the main to a 160 and run it yesterday.
Before I was getting between 24-25 (I think it's time for prop work) before season, I was getting 26-27.
After putting the mikuni 42, I was able to get 26 consistently and bump 27 at times.
I do have one question, have any of you had an issue with the motor not returning back to idle after running a while. Should the spring on the carb have enough tension to return it back to idle or do any of you run a close cable like on a motorcycle application?
_________________ 17.5x48 CC w/ PD 36 Gen 3 EFI E2
"They cant put anything on the internet that isn't true." "Where'd you hear that?" "The internet"
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Thu Apr 16, 2015 5:27 am |
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JD145
MMT 1000 Club
Joined: Wed Jun 04, 2014 9:01 pm Posts: 1289 Location: SWGA
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Re: DIY Mikuni kit
Make sure your cable isn't binding somewhere
_________________ 1854 Prodigy DPE Level 3 HDR
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Thu Apr 16, 2015 6:08 am |
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banded-mallard
MMT 1000 Club
Joined: Wed Oct 07, 2009 8:18 pm Posts: 4310
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Re: DIY Mikuni kit
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Thu Apr 16, 2015 8:12 am |
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dwight37
MMT Pro Member
Joined: Sat Sep 03, 2011 8:31 pm Posts: 375
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Re: DIY Mikuni kit
Where did you order the pit adapter and rubber boots from?
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Thu Apr 16, 2015 8:44 am |
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jerimiahw
MMT 1000 Club
Joined: Sun Sep 23, 2012 8:10 pm Posts: 1191 Location: chauvin
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Re: DIY Mikuni kit
image.jpg
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Fri Apr 17, 2015 12:08 pm |
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SEACHASER
MMT Pro Member
Joined: Sat Jun 16, 2012 12:57 pm Posts: 80 Location: Houma, La
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Re: DIY Mikuni kit
[attachment=0]20140404_174910.jpg[/a
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Fri Apr 17, 2015 5:12 pm |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm Posts: 16915 Location: Rowlett, TX
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Re: DIY Mikuni kit
^^^^^^^^^^^^^^^^^
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Fri Apr 17, 2015 5:39 pm |
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DallasNFA
MMT Member
Joined: Wed Sep 11, 2013 11:03 am Posts: 29
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Re: DIY Mikuni kit
Anyone have a pic of a MB with one of these? I'm wanting to swap mine out for the Mikuni, anyone have a complete list of parts and maybe links?
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Mon May 18, 2015 2:40 pm |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: DIY Mikuni kit
Parts list at beginning of thread. Links scattered throughout this site. Google can probably cover everything for you, just gotta do a little legwork. Or buy a complete kit from boatdr or bps or pvt maybe.
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Mon May 18, 2015 3:16 pm |
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DallasNFA
MMT Member
Joined: Wed Sep 11, 2013 11:03 am Posts: 29
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Re: DIY Mikuni kit
Does boatdr have a website?
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Mon May 18, 2015 6:41 pm |
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BoatDR
MMT Sponsor
Joined: Tue May 24, 2011 6:43 am Posts: 1604
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Re: DIY Mikuni kit
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Mon May 18, 2015 6:50 pm |
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Buddy
MMT Addict
Joined: Mon Aug 06, 2012 9:06 am Posts: 579 Location: Tallahasse, FL
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Re: DIY Mikuni kit
_________________ 1754 XSeries Kawi Powered PRODRIVE ...
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Tue May 19, 2015 9:30 am |
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nuccifish06
MMT Pro Member
Joined: Tue Sep 16, 2014 6:36 pm Posts: 108 Location: Sunrise, FL
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Re: DIY Mikuni kit
_________________ 1438 Jon / 23hp MBLT
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Tue May 19, 2015 11:03 am |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm Posts: 16915 Location: Rowlett, TX
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Re: DIY Mikuni kit
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Tue May 19, 2015 1:06 pm |
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gofish206
MMT Pro Member
Joined: Sun May 08, 2011 3:30 pm Posts: 89
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Re: DIY Mikuni kit
When buying a Mikuni hsr42 for this setup does it matter if you get a 42-6 42-11 or 42-18 what the hell is the difference. I've had some shitty luck with the DIY stuff so just trying to get it right. Thanks
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Mon Jul 27, 2015 8:23 pm |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: DIY Mikuni kit
Pretty sure its just different stock jet setups, which you're gonna be using something different than that anyway.
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Mon Jul 27, 2015 8:44 pm |
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jakehawk9
MMT 1000 Club
Joined: Wed Jul 01, 2015 6:06 pm Posts: 1447 Location: South central, ks
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Re: DIY Mikuni kit
So after reading all this the descriptions are pretty vague for someone who doesn't know about mikuni carbs or who hasn't been around long enough to catch enough conversation about em. So I ask the baseline. How much is it to buy the "mikuni carb" ready to go on an engine and work. And how much is it to piece together a "mikuni carb kit" and buy all the parts to make it work.
Sent from...wait, Where am I?
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Wed Jul 29, 2015 7:27 pm |
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North LA Hunter
MMT Elite Member
Joined: Mon Aug 02, 2010 8:39 pm Posts: 6976 Location: West Monroe, LA
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Re: DIY Mikuni kit
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Wed Jul 29, 2015 7:45 pm |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: DIY Mikuni kit
850 from bps.
Pieced together: 280 carb, 30 for jets and float needle seat, 135 for flange and intake adapter from pvt (don't know what it costs from bps), 20-70 for air filter, 60 for throttle cable/lever from gtr or bps. All done for 550ish.
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Wed Jul 29, 2015 7:53 pm |
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brickgw
MMT 1000 Club
Joined: Wed Apr 17, 2013 5:15 pm Posts: 2032
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Re: DIY Mikuni kit
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Wed Jul 29, 2015 7:57 pm |
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jakehawk9
MMT 1000 Club
Joined: Wed Jul 01, 2015 6:06 pm Posts: 1447 Location: South central, ks
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Re: DIY Mikuni kit
Thank you for explaining all this. It really helps me wrap my head around it. This does add up to my theory about how the mud motor market is out of control because when rednecks get a little money, we as a sub species go apeshit. I'll just leave it stock
Sent from...wait, Where am I?
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Wed Jul 29, 2015 8:23 pm |
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brickgw
MMT 1000 Club
Joined: Wed Apr 17, 2013 5:15 pm Posts: 2032
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Re: DIY Mikuni kit
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Wed Jul 29, 2015 8:29 pm |
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jakehawk9
MMT 1000 Club
Joined: Wed Jul 01, 2015 6:06 pm Posts: 1447 Location: South central, ks
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Re: DIY Mikuni kit
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Wed Jul 29, 2015 8:38 pm |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm Posts: 16915 Location: Rowlett, TX
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Re: DIY Mikuni kit
ttt for Will C
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Tue Sep 06, 2016 4:33 pm |
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reharbert
MMT Addict
Joined: Tue Mar 17, 2015 1:38 am Posts: 606 Location: Beaumont, Texas
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Re: DIY Mikuni kit
I just put one together for my motor a few weeks ago, and thought I would share an update with some current pricing.
Mikuni HSR 42 carb – This will be a big money saver, especially if you can find one used in good condition. I picked it up in like new condition for 200 bucks on eBay with no rebuild required.
Needle valve assembly – size 2.3; Mikuni part 16030-027 - $49 Main jet – Size varies, ordered 162.5, 165, and 167.5 - $3 each Pilot jet – size 25 is typical, also purchased 27.5 - $6 each I got all these parts from JersRUs.com
Push button choke – Mikuni part TM29/31. You can use this push button style or the cable style. $17 on eBay
Rubber flange adapter – Mikuni part 018-42K - $22 on Amazon
Intake adapter. This is another big money saver. The three most common are the BPS Black death, Delta performance, and Performance V-Twin. There are some performance differences. I picked up the PVT “used” off MMT but never ran for 100 and no shipping. I think they are 100+ shipping from Performance V-Twins. The Delta and BPS run 300+.
Air filter adapter - $60 from the Boat Dr. Just buy this from these guys and be happy with it.
Air filter - “Free”. I have some air filters from racing karts. The diameter was slightly smaller, but was able to stretch to fit. Buying a filter is going to run you 20-50 bucks based on your choice. The Tau Ceti FA-TOR-25-BLK is the most common choice.
I think this covers it all. The necessities. Other things to consider are a governor block, rev limiter, and rain guard. The Boat Dr carries all this at good pricing. I also hear he carries a kit similar to the above, but I didn’t ask about it.
To sum it up…I spent under $475. It’s still easily do-able for under $550.
_________________ Uncle J - 17 x 48 w/GTR | Bayou Surface Drive heads | Voodoo exhaust | DIY Mikuni carb
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Mon Jun 26, 2017 11:56 am |
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pokey79
MMT 1000 Club
Joined: Mon Nov 15, 2010 4:50 pm Posts: 2282 Location: Circumcised, Louisiana
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Re: DIY Mikuni kit
Last time I checked the BPS intake adapter is 150$
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Mon Jun 26, 2017 2:51 pm |
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reharbert
MMT Addict
Joined: Tue Mar 17, 2015 1:38 am Posts: 606 Location: Beaumont, Texas
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Re: DIY Mikuni kit
_________________ Uncle J - 17 x 48 w/GTR | Bayou Surface Drive heads | Voodoo exhaust | DIY Mikuni carb
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Mon Jun 26, 2017 3:30 pm |
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Russ
MMT 1000 Club
Joined: Mon Dec 31, 2012 11:07 pm Posts: 4820 Location: West Monroe, LA
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Re: DIY Mikuni kit
It hasn't been 150 in a while
Sent from my SAMSUNG-SM-G891A using Tapatalk
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Mon Jun 26, 2017 4:02 pm |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm Posts: 16915 Location: Rowlett, TX
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Re: DIY Mikuni kit
Yea, they tripled the price on em when people started just buying the adapters instead of the whole kits.
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Mon Jun 26, 2017 8:21 pm |
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banded-mallard
MMT 1000 Club
Joined: Wed Oct 07, 2009 8:18 pm Posts: 4310
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Re: DIY Mikuni kit
Fucking insane. I could buy a block of billet and carve it out with a damn dremel before I would spend 305 on that cast piece of shit. Amazing how when we started piecing them together, how prices go up. That's how they cornered the market with the kit, you had to have the adapter. Or if you have a buddy with a machine shop, you can get one made for even less than that.
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Tue Jun 27, 2017 9:18 am |
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pokey79
MMT 1000 Club
Joined: Mon Nov 15, 2010 4:50 pm Posts: 2282 Location: Circumcised, Louisiana
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Re: DIY Mikuni kit
well fuck me running backwards!!! that's HIGH
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Tue Jun 27, 2017 11:00 am |
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