CCPR: Overbored 32mm PHF Dellortos - now 36mm. Application - modified Laverda Corsa.
Same set
Same set, last pic.
Very special: Pumpless PHF's from a delectable Laverda 750 SFC. Restoration by Slaters, carburettors by JRS
The simple carburettors get treated equally well: in this case the CC service was requested.
Another set of Laverda triple carburettors. Again CCPR and complete with new Cavis hose. Note even the clips get linished, polished and replated - JRS attention to detail.
Incomplete pair of 40mm PHM carburettors - new slides need machining to seat properly. Probably bevel drive Ducati application and receiving the CCPR level of service
Same set.
and again
Set of three, this time from a Bennelli 6 cylinder machine. Again CCPR service
Concours quality!!
Pair of VHB's. Restored at JRS for an MV Augusta twin.
Pair of PHF30's from a Ducati 500 desmo twin, after CO at JRS. New build kits and pump recalibration. Olde parts returned for customer's inspection. JRS: tested quality.
Pair of PHM40's from a Ducati Mike Hailwood Replica at JRS for CO. Work complete, pumps re calibrated and completed work fuel tested. JRS for tested quality.
30mm Dellortos from a 350 Morini in for a CO.
Set of 32mm PHF's from a 120 degree Jota, in for Restoration. Bike unused for years .
Same set finished including new Cavis hose - pumps calibrated as you would expect. Nasty countersunk hex screws on the middle unit replaced with new before they left me!!
Same assembly.
SI carburettor in for CO.
Yet more Jota carburettors, this time from a 180 crank model. These are in poor order and all three operating spindles are badly worn - replacement unobtainable, so customer advised as to options.
Something different. One of a pair of modern PHM40N carburettors. Customer required the comprehensive overhaul and specific changes to the external appearance - so- re-engineering to bodies, bowls and other castings, together with mirror polishing of manifolds (and stainless steel fixings), bellmouths, tops, fuel unions and bowl caps. The original dark finish can be side inside the bowl. These carburettors have seen very little action, but even in this prized condition, as delivered they would not have fuelled the Guzzi engine properly. Uninformed attention will do this every time.
Complete. Flip up choke mechs fitted. Properly set up, correct float height and pumps calibrated to 5cc/20 strokes. Idle screws nominal 1.5 turns out. As mentioned before a different piece of work, but again, an engineering approach to carburettor overhaul and restoration - JRS - tested quality.
Restored set of 36mm PHF's
This is what they looked like when the arrived at JRS: generally poor externally, with damage and missing components. Internally - very poor indeed, but no slide/bore wear.
1981 Ducati 900 bevel desmo carburettors in for CO. Owner had been tolerating indifferent perfromance for many years, but decided to use JRS to resolve problems and enjoy a sweet running classic bevel desmo Ducati again.
CO complete and they look better as well. Issues caused by a build up of residues, poor maintenance and by water ingress on one carburettor. Resolved, but carburettors and water really don't go well together. Internal oxidation of the alloy, once started is difficult to remove and future continued oxidation difficult to prevent.
Good news travels!! All the way from Antibes, S France, to wet and windy Wales. 2 pairs of Dellortos from some quality 70's motorcycles: 38mm's from a BMW R90S and the 40's are from a 900 V twin bevel desmo Ducati. At JRS for restoration.
Here are the 40's. Foul stinking mess, but very good basic condition with minimal slide wear. Obviously not been run recently, float heights were hopeless, as was the build with key components wrongly assembled.
Here are the 38mm's. This is as far as I could get - slides, needles etc locked solid by fuel residues. Hammer and chisel next? Not at JRS!! These will be extracted without brute force and with no damage or marking to the components whatsoever.
Work complete.
More work from far afield. A pair of new 40mm Dellorto's from another bevel desmo Ducati, this time in Germany. Old established JRS customer sending the carburettors for pump calibration, duly completed foc, other than return postage. As supplied pumps were operating at 10 and 8.5cc/20 strokes and now both supplying the recommended 8cc/20.
Good news travels even further!! 40mm Dellortos from this 1977 Ducati 900SS arriving from Poland and at JRS for restoration. Bike being restored: the engine in England, the carburettors in Wales and the rolling chassis in Poland. Isn't that Imola tank just something special?
Carburettors complete and off to the engine builder.
Ultrasonics, re-engineering, polishing, replating and careful rebuilding together with accurate pump recalibration. JRS ; tested quality.
PHM's. L/H is from a 500 Gilera and the R/H and KTM. Bopth at JRS for CO. Both lightly used motorcycles and neither running well. usual Dellorto problems, asociated with poor/no maintenance, poor build and residues. All......
....complete and fuel tested. Pumps set at 7cc/20 strokes for the Gilera and the manuals have the wrong float height figure for the KTM. Correcting this, together with all the other CO work will transform both of these machines. JRS - tested quality carburettor services.
Trade work from Mick Hemmings M/c Ltd. Pair of PHF's from an 850 Norton Commando, all the way from Germany and at Mick's for restoration, A tight fit, when fitted to a Commando engine, the carburettors operate without the pump operation and the appropriate blanking plates manufactured and supplied by JRS as part do a JRS restoration.
Another set of 32PHF's from a Laverda triple, at JRS for Restoration. Owner complained of poor running ......
...and this view starts to explian reasons why this might be. The balance pipe that is supposed to connect the 3 carburettors is linked between 2 only. However, closer inspection of the LH carburettor shows the idle mixture screw facing INWARD.
This is even clearer pic and here......
... are the same screws on the other 2 carburettors. Again, as you can see, facing INWARD. Setting the idle mixture is virtually impossible when wrongly built like this. You have to ask yourself who did this. I know the last workshop that attempted to get the bike to run acceptably and I am suprised that they passed this as acceptable. Just goes to show what absolutely abysmally bad service can be had from so called Laverda experts. This assembly will be absolutely correct when it leave JRS.
Pair of 32mm Dellorto PHB's from a 1970's 900 bevel Ducati V twin, at JRS for CO.
CO complete: pumps set and all completed work fuel tested.
Yet another bank of 32 PHF's from a Laverda triple, after CO and PR. Fuel hoses do not look right!! This will be altered before packing.
That's better.
Yet more Laverda triple carburettors, this time the restoration of an excellent set of 32 PHF's from an early Jota. REMEMBER THAT YOU CAN HAVE THIS QUALITY OF WORK AT A SUBSTANTIALLY REDUCED PRICE VIA UCC IF YOU CHOOSE TO DISMANTLE AND REBUILD THE CARBURETTORS YOURSELF!!!
Pair of Dellortos from a Ducati 600 Pantah, after CO. Arrived non functioning, with broken choke jet, Japanese float valve needle amongst the usual culprits. Minimal slide wear though!!! Floats set at at 18mm, pumps at 4cc/20 strokes and idle screws at 1.5 turns out. Tested quality work from JRS.
VHB's from a Benelli 750 Sei, at JRS for CO.
More of the same: another set of Jota carburettors after CO.
Finished,
Another set.
Pair of Dellortos from a Guzzi after restoration.
More Restoration work completed
At last: something a bit different: an SS1 body and 2 SS1 bowls, at JRS for restoration.
Missing parts obtained, work completed.
Pair of 40's from a Ducati Haialwood Replica. Yum.
Laverda Jota and 3 Deellorto PHF32's. Just a simple pic of the steelwork, after linishing, polishing at JRS in preparation for replating in BZP. 71 parts in total.
