Mikuni Carbs

AGT123 · Jul 6th, 2016, 15:49

Hi,
Has anyone experience of replacing twin SU's with Mikuni carbs?

I am having a total engine rebuild and want to upgrade from the single Stromberg to twins.
Now the SU route seems the most normal way to go but I have read mixed reports on reliability.
Thoughts anyone??

Andy.
Glasgow.

heckflosse · Jul 6th, 2016, 16:35

Quote:

Originally Posted by AGT123

Hi,
Has anyone experience of replacing twin SU's with Mikuni carbs?

I am having a total engine rebuild and want to upgrade from the single Stromberg to twins.
Now the SU route seems the most normal way to go but I have read mixed reports on reliability.
Thoughts anyone??

Andy.
Glasgow.

SUs are fine, so long as the spindles aren't worn.
Is originality important to you? If so stick with the good old SU and get used to twiddling them monthly...

AGT123 · Jul 6th, 2016, 16:59

Hi,
Nop, originality is not important as i believe any improvements to the original are always worthwhile.

My issue is that it appears difficult to source a set of new, or reconditioned SU's.
They are also carbs that time has passed by and there appears to be more efficient carbs out there, easier to maintain & more reliable.

The Mikuni carbs seem to be the carb of choice in the States for fitting to the B20 unit and I just wondered if there were any members running them who could voice an opinion.

Regards,

Andy.
Glasgow.

amazon69 · Jul 6th, 2016, 18:27

You can get a pair of HS6's which are essentially new from Burlen or Brookhouse. Incredibly reliable carb, never understood why people think otherwise. As long as any spindle wear is taken care of, then they are hard to beat. I'm not sure I agree that the Mikunis are the carb of choice in the states..I know John Parker bangs on about them but I don't see many other advocates, but I could, of course, be wrong.

AGT123 · Jul 6th, 2016, 18:54

Hi All,
With the greatest of respect I am not looking for input regarding the virtues of the SU setup. I have been using them for years on various classics and wish to move away from them.
In my experience they are unreliable, uneconomical & not the way I want to go with my Amazon.

I will be buying new carbs for my Amazon, just not SU's.

Regards,

Andy,
Glasgow.

tdz840 · Jul 6th, 2016, 19:39

Whilst John Parker is an advocate of Mikunis you need to ask why they are not the carb of choice in UK and Europe despite similar available source of carbs.
Plus I would suggest the number of tuners on the continent who have many years of experience with the B20, far outweigh the number of Us tuners, but still stick with side drafts or SUs
If you do go with Mikunis, think carefully about sending money over the pond.
Especially with the current exchange rate
Russ

Burdekin · Jul 6th, 2016, 20:41

My understanding is tuning capabilities are limited (not as good as weber DCOEs for performance or claimed by Parker) but they are a reliable carb. They have other issues as well regarding fitting and setup.

You'd be best asking on the US Volvo forums. I don't think they're that popular in the US either.

AGT123 · Jul 6th, 2016, 20:47

Quote:

Originally Posted by Khe Sanh

My understanding is tuning capabilities are limited (not as good as weber DCOEs for performance or claimed by Parker) but they are a reliable carb. They have other issues as well regarding fitting and setup.

You'd be best asking on the US Volvo forums. I don't think they're that popular in the US either.

Hi,
Many thanks for your feedback.
Worth a post on that site.

Thanks,

Andy,
Glasgow

jamie · Jul 6th, 2016, 23:41

Hi there
I know that Rob Henchoz ordered, received, yes received and then fitted Mikunis for a customer written up on his blog. So you may like to get in touch with him for info from a UK source and user.01379 388400
I hear what you are saying about SUs and you sound like you have reached the end with SUs, but....! pardon me if I say that not everyone shares your view about them and properly set up....usually that means on a rolling road for best accuracy they will give you excellent loyalty, mpg (that is a relative thing) and reliability. However, as Mr Parker says, Mikunis continued research and development long after SUs stopped theirs, so they should be better
Good luck and let us all know, I am still sticking with my SUs until I hear reliably that Mikunis are better in enough ways to suggest I switch
Kind regards from
Jamie

classicswede · Jul 7th, 2016, 00:05

I have never used them. The HS6's are not bad put I prefer HIF44's or Strombergs TBH

A little google came up with this but worth reading much further

http://forums.turbobricks.com/showthread.php?t=269517

Jul 6th, 2016, 15:49	#1
AGT123 Junior Member Last Online: Aug 29th, 2018 22:34 Join Date: Jun 2016 Location: Glasgow	Mikuni Carbs Hi, Has anyone experience of replacing twin SU's with Mikuni carbs? I am having a total engine rebuild and want to upgrade from the single Stromberg to twins. Now the SU route seems the most normal way to go but I have read mixed reports on reliability. Thoughts anyone?? Andy. Glasgow.

Jul 6th, 2016, 18:27	#4
amazon69 Premier Member Last Online: May 21st, 2024 17:55 Join Date: Jan 2006 Location: Falmouth	You can get a pair of HS6's which are essentially new from Burlen or Brookhouse. Incredibly reliable carb, never understood why people think otherwise. As long as any spindle wear is taken care of, then they are hard to beat. I'm not sure I agree that the Mikunis are the carb of choice in the states..I know John Parker bangs on about them but I don't see many other advocates, but I could, of course, be wrong. __________________ Falmouth, Cornwall. 1970 California white 131.

Jul 6th, 2016, 20:41	#7
Burdekin Chief Bodger Last Online: May 21st, 2024 08:18 Join Date: Oct 2009 Location: Aberdeen	My understanding is tuning capabilities are limited (not as good as weber DCOEs for performance or claimed by Parker) but they are a reliable carb. They have other issues as well regarding fitting and setup. You'd be best asking on the US Volvo forums. I don't think they're that popular in the US either. __________________ One day I will get rid of all of the rust.

Jul 6th, 2016, 23:41	#9
jamie amazon1954 Last Online: Mar 10th, 2021 20:19 Join Date: Dec 2002 Location: Bath	Mikunis fitted in Uk Hi there I know that Rob Henchoz ordered, received, yes received and then fitted Mikunis for a customer written up on his blog. So you may like to get in touch with him for info from a UK source and user.01379 388400 I hear what you are saying about SUs and you sound like you have reached the end with SUs, but....! pardon me if I say that not everyone shares your view about them and properly set up....usually that means on a rolling road for best accuracy they will give you excellent loyalty, mpg (that is a relative thing) and reliability. However, as Mr Parker says, Mikunis continued research and development long after SUs stopped theirs, so they should be better Good luck and let us all know, I am still sticking with my SUs until I hear reliably that Mikunis are better in enough ways to suggest I switch Kind regards from Jamie

Jul 7th, 2016, 00:05	#10
classicswede Trader Volvo in my veins Last Online: Yesterday 23:26 Join Date: Dec 2004 Location: Anglesey	I have never used them. The HS6's are not bad put I prefer HIF44's or Strombergs TBH A little google came up with this but worth reading much further http://forums.turbobricks.com/showthread.php?t=269517 __________________ http://www.classicswede.org www.classicswede.co.uk

Jul 6th, 2016, 16:59	#3
AGT123 Junior Member Last Online: Aug 29th, 2018 22:34 Join Date: Jun 2016 Location: Glasgow	Hi, Nop, originality is not important as i believe any improvements to the original are always worthwhile. My issue is that it appears difficult to source a set of new, or reconditioned SU's. They are also carbs that time has passed by and there appears to be more efficient carbs out there, easier to maintain & more reliable. The Mikuni carbs seem to be the carb of choice in the States for fitting to the B20 unit and I just wondered if there were any members running them who could voice an opinion. Regards, Andy. Glasgow.

Jul 6th, 2016, 18:54	#5
AGT123 Junior Member Last Online: Aug 29th, 2018 22:34 Join Date: Jun 2016 Location: Glasgow	Hi All, With the greatest of respect I am not looking for input regarding the virtues of the SU setup. I have been using them for years on various classics and wish to move away from them. In my experience they are unreliable, uneconomical & not the way I want to go with my Amazon. I will be buying new carbs for my Amazon, just not SU's. Regards, Andy, Glasgow.

Jul 6th, 2016, 19:39	#6
tdz840 VOC Member Last Online: Dec 14th, 2023 11:57 Join Date: Nov 2004 Location: fareham	Whilst John Parker is an advocate of Mikunis you need to ask why they are not the carb of choice in UK and Europe despite similar available source of carbs. Plus I would suggest the number of tuners on the continent who have many years of experience with the B20, far outweigh the number of Us tuners, but still stick with side drafts or SUs If you do go with Mikunis, think carefully about sending money over the pond. Especially with the current exchange rate Russ

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