MD27F carb parts and info (super Alce)
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wea...@yahoo.co.uk
May 3, 2018, 3:04:00 PM5/3/18
to Guzzi Singles
A few questions: 1, Can anybody tell me please what the threads used on Dellorto carbs are, particularly the MD27F some of the hex heads don't really seem to be metric (or any British sizes that I've tried) did they use odd sizes? 2, There is a hex head on top of the slide above the needle. Should it unscrew to release the needle? It's hellish tight and i'm frightened of damaging the slide trying to move it. 3, The needle jet female thread for main jet is stripped. Is there a source of supply for these or does anyone have one they would like to sell? I guess its common with other dellortos. Any help appreciated as always, thanks.
Chris
SED Sci
May 3, 2018, 11:29:38 PM5/3/18
to Guzzi Singles
The MC26 on my GTV has that hex dome over the needle. Uses a 9mm socket. If very tight you might try penetrating oil then heat the slide. Any expansion should help.
The needle jet is available from Valenti (though the one he sent is slightly larger than the 270 I took out). The MC/MD series carbs have a 5mm main jet, but the SS1 series carbs have a 6mm main jet. The threads for the 6mm may be larger (can't remember) so might be possible to tap it out to a larger size.
What is the number on your needle jet?
Shawn
antonio
May 4, 2018, 8:18:02 AM5/4/18
to weas795 via Guzzi Singles
I have a MD27 F Carb that I sourced in
Italy a couple of Years ago for a friend here in the US, that
unfortunately passed away before I could deliver it. It is for
sale.
Zipolo
Zipolo
On 5/3/2018 3:03 PM, weas795 via Guzzi Singles wrote:
A few questions: 1, Can anybody tell me please what the threads used on Dellorto carbs are, particularly the MD27F some of the hex heads don't really seem to be metric (or any British sizes that I've tried) did they use odd sizes? 2, There is a hex head on top of the slide above the needle. Should it unscrew to release the needle? It's hellish tight and i'm frightened of damaging the slide trying to move it. 3, The needle jet female thread for main jet is stripped. Is there a source of supply for these or does anyone have one they would like to sell? I guess its common with other dellortos. Any help appreciated as always, thanks.Chris
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Eric Trosper
May 4, 2018, 10:06:56 AM5/4/18
to guzzi-...@googlegroups.com
I am interested…
Eric in kenosha!!!
et
wea...@yahoo.co.uk
May 4, 2018, 2:08:58 PM5/4/18
to Guzzi Singles
So am I! DaleOrto, do you want the whole carb?
Chris
SED Sci
May 4, 2018, 11:19:09 PM5/4/18
to Guzzi Singles
What do you want for it? Where are you located?
SED Sci
May 4, 2018, 11:45:58 PM5/4/18
to Guzzi Singles
Has anyone installed a Mikuni VM28 on a Guzzi and made it run? It seems like the perfect "modern" replacement. Are there other carbs that would work on a 500 single?
Charles Mullendore
May 5, 2018, 9:17:44 AM5/5/18
to guzzi-...@googlegroups.com
I put a VHB29 from an Ambassador on a customer's Falcone and it worked perfectly with no rejetting necessary. If you wanted something smaller, perhaps a VHB27 from an H-D/Aermacchi Sprint.
Mike Peavey
May 5, 2018, 9:43:17 AM5/5/18
to guzzi-...@googlegroups.com
I just did the same thing to my Falcone, found a NOS VHB27 from a Harley Sprint. I did need to have a plastic sleeve made to fit the Falcone manifold. I believe Patrick Hayes mentioned his later Falcone has a VHB26 as stock.
Mike
Boston
electrajohnt
May 5, 2018, 3:42:20 PM5/5/18
to Guzzi Singles
You could try here, they do nit specifically mention the MD but a email might get a response.
JohnT
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