Linkert Venturi

Linkert related issues
Post Reply
ridermike
Posts: 45
Joined: Fri Aug 04, 2006 8:01 pm
Bikes: 1960 FLF
1942 WLA
1998 FLHTC
2000 Custom
Location: Mid Tn.

Linkert Venturi

#1

Post by ridermike »

Are the Linkert Venturi (m74b) that J&P cycles sell any good? Mine falls in the carb body and actually rattles. I am in need of one and they are quick. Also where do I get the durable 3 gram floats I keep reading about? I have a new Gary Bang that came with the kit but the Durable sounds like it is the best.



Cotten
Posts: 6913
Joined: Mon Aug 26, 2002 9:09 am
Location: Central Illinois
Has thanked: 112 times
Been thanked: 292 times

#2

Post by Cotten »

Mike!

Is the J&P venturi a new Colony aluminum one?
(I alerted Colony to the problem a few weeks ago.)

Unfortunately, aluminum cannot be swaged the way original potmetal ones can, so you would be best to return it.

And I cut the Durables myself, so please post me direct at liberty@npoint.net

Thanks,

....Cotten

ridermike
Posts: 45
Joined: Fri Aug 04, 2006 8:01 pm
Bikes: 1960 FLF
1942 WLA
1998 FLHTC
2000 Custom
Location: Mid Tn.

#3

Post by ridermike »

Cotton,
I was not clear on my last post. My OEM venturi is the loose one and was asking if the J&P was OK. I don’t know who supplies theirs I assume V-twin. The sale reps will not know so I will call their tech guys. What do you mean by swag? Is it like bell-mouthing, with say a large ball bearing and a good hammer? I will be in contact about the float.

Cotten
Posts: 6913
Joined: Mon Aug 26, 2002 9:09 am
Location: Central Illinois
Has thanked: 112 times
Been thanked: 292 times

#4

Post by Cotten »

Mike!

I have not inspected either V-TWIN's nor J&P's offerings; Colony has only recently produced a wide range of venturies.

A swage is a small screwpress with conical anvils that applies a controlled outward force upon the inside of the venturi. Usually it must be taken oversize and then lathe cut to a proper interference fit within the bore of an individual carb body. This allows for a wider area of contact, both fore and aft, rather than just rolling over the edge of the rear of the venturi.

A hammer and a ball bearing will most likely split the brittle metal, but you might get lucky.

The problem arises from the nature of die-cast potmetal. It is technically a super-cooled liquid, like window glass, and slowly crystallizes over the decades. Heat seems to be the culprit that causes shrinkage, and even a venturi that is swaged to a stiff press fit might shrink to a slip fit in a year's time, without even being subjected to the heat of service.

I was quite optimistic when I heard Colony was producing venturies, but dismayed to find that they apparently copied the dimensions of shrunken examples. Although I would have preferred potmetal so that individual bodies could be fitted perfectly, aluminum should prove more stable, once quality control takes over.

...Cotten

ridermike
Posts: 45
Joined: Fri Aug 04, 2006 8:01 pm
Bikes: 1960 FLF
1942 WLA
1998 FLHTC
2000 Custom
Location: Mid Tn.

#5

Post by ridermike »

Cotton
I spoke with the techs at J&P cycle and was told the venturi they sell is produced by V-Twin. He did not know nor could he find out until he actually phoned them, and then returned my call. I thought that was pretty good service, but I am still sending mine to you. Maybe V-twin’s are better than colony’s.

Cotten
Posts: 6913
Joined: Mon Aug 26, 2002 9:09 am
Location: Central Illinois
Has thanked: 112 times
Been thanked: 292 times

#6

Post by Cotten »

I am certain that Colony's will be dialed in near-perfect quite soon.

V-Twin distributes Colony parts, so I think we can look forward to them becoming the industry standard.

Thanks,

...Cotten

Post Reply

Return to “Linkert”