Author Topic: Dellorto phf vs phm  (Read 3145 times)

crc

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Dellorto phf vs phm
« on: January 02, 2015, 10:50:17 PM »
whats the difference in them? I think I knew once but its slipped my mind at the moment. has anyone here put phf32s on a round barrel? I bought some phf32s a few months intending to use them on my eldo, but haven't mocked my engine up yet to see how they will fit. I think theyre off a ducati bevel so fit on a spigot like the vhb guzzi carbs. the reason I ask about phms is that some phm40s have come up for sale at a good price, they'll be no good on my eldo but I do like collecting stuff that I may use oneday

Offline guzzista

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Re: Dellorto phf vs phm
« Reply #1 on: January 03, 2015, 04:29:34 AM »
PHF's are (were) available from 30 to 36 mm, both with female ( external clamp) and male  fitting (as on Guzzi LM's.) PHM go from 38 to 40mm, fitting options same  as PHF.  The choke ( enrichener ) is a bit different on the PHM ( bolted to the side ) . Some PHM's had no enricheners and accell pumps were blanked off with a plate
1975 750S Tribute bike, 1994 Cali 1100, 2007 Ducati GT1000, 1983 SP1000 1967 Vespa 180 SS, 1976 Vespa Rally 200

Offline guzzisteve

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Re: Dellorto phf vs phm
« Reply #2 on: January 03, 2015, 08:36:46 AM »
I have PHF 32's(non bevel Duc)  on my Cali2, just the 2mm difference was like I put on FI.

My daily rider V700 came to me w/PHF32 Bevel Duc carbs on it. The slides are different than current made PHF's, and you may not be able to find a /60 cut on a set of used ones. I have a pair but useless if you can't get parts(slides). The idle ramp is wrong if I remember, bike won't idle down w/newer slides.
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Offline jacksonracingcomau

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Re: Dellorto phf vs phm
« Reply #3 on: January 03, 2015, 07:06:43 PM »
I have PHF 32's(non bevel Duc)  on my Cali2, just the 2mm difference was like I put on FI.

My daily rider V700 came to me w/PHF32 Bevel Duc carbs on it. The slides are different than current made PHF's, and you may not be able to find a /60 cut on a set of used ones. I have a pair but useless if you can't get parts(slides). The idle ramp is wrong if I remember, bike won't idle down w/newer slides.

New slides can be modded to fit, see
http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=11570&CategoryID=2&PartsectionID=21

Other difference PHM to PHF is grooves for rubbers (on male spigot), 2 grooves or 1 groove, not relevant to Duc style bolt up but if making spigot to rubber mount, get rubbers first

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Re: Dellorto phf vs phm
« Reply #3 on: January 03, 2015, 07:06:43 PM »

Offline guzzisteve

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Re: Dellorto phf vs phm
« Reply #4 on: January 03, 2015, 07:58:00 PM »
Thanks for the info, that's great. Set them up in 92.
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Harper's Moto Guzzi
Harper's Moto Guzzi. Where we still answer the phone, use the highest quality parts, and also do Transmission, rear drive, and carb rebuilds fast. Call us at 816.697.3411 and get your problems resolved.
http://www.harpermoto.com
Advertise Here