Returnless system and ricks tank

[XLexusTech]

Just reading up on this an ended up curious... If the venting problem is associated with warm fuel coming back on return ... And you use a return less system like vapor works

Do you still need a expensive vent system?

[rocketrod]

I can only speak from personal experience and others may have different results, but I am using a VaporWorx tank with a vented gas cap AND I do not have a fuel vent system installed. I have put about 10,000 miles on car in the last 2.5 years and have yet to have a problem. This is on a street driven car with a few trips to the drag strip each year.

[CarlC]

All tanks require some kind of vent. The type used depends on many factors, but often the driving style can be the deciding factor.

The chassis designs we typically deal with are tough to deal with from a venting standpoint. It's best when the vent attachment point is high vs. the liquid level. In later model designs this is done with a vapor dome and the trunk floor is changed accordingly. The other way is to not have the tank fill up all the way, hence leaving an air gap.

If the car is a cruiser with little sloshing then a stock vented cap MAY work, buy MAY also have some leakage. It MAY also have some fuel smell in the garage.

The better vents, like the IIMuch design, are made so that if liquid enters the venting system it is caught and returned. The air is also filtered. This allows for a sealed cap, hence less leakage. My vented stock 1968 cap works, but it does leak when fuel sloshes aft.

[randy]

Just get a finch dual vent for the gas tank and diff and be done with it.

[l2azorback]

I really wish I had seen this post prior to purchasing two IIMuch Fabrication vents, as the single Finch unit would have been a nice touch. I am mounting both of my vents (Tank & Diff) in the Torque Box area of my DSE Q-Link.

Regards,

Larry