Captain Avgas
Well Known Member
For some insane reason Vans continues to supply their AFP boost pump kit with an obvious fit conflict between the fuel line on the pump and the filter. Everyone who's got this far knows what I mean.
There seems to be four possible solutions:
1. Completely dismantle the kit and reassemble with revised tubing. This solution will probably invalidate the warranty.
2. Unscrew the T-fitting in the gate valve by 10 degrees and instal revised tubing. This solution is common but goes against accepted practice in that pipe fittings should never be partially unscrewed lest they break their seal and leak. AFP themselves do not recommend this solution.
3. Raise the pump up using some form of rubber spacer. This solution is less common but may make more sense.
4. Instal the pump manifold on a 10 degree angle in contravention of Vans instructions to mount it "as close to vertical as possible". This solution is appealing but I'm not sure what it really means.
So what have others done. Has anybody had success with the rubber spacer approach.
The fuel system is a non redundant system. One strike and you're down. It's not an area I care to be "experimental" about.
There seems to be four possible solutions:
1. Completely dismantle the kit and reassemble with revised tubing. This solution will probably invalidate the warranty.
2. Unscrew the T-fitting in the gate valve by 10 degrees and instal revised tubing. This solution is common but goes against accepted practice in that pipe fittings should never be partially unscrewed lest they break their seal and leak. AFP themselves do not recommend this solution.
3. Raise the pump up using some form of rubber spacer. This solution is less common but may make more sense.
4. Instal the pump manifold on a 10 degree angle in contravention of Vans instructions to mount it "as close to vertical as possible". This solution is appealing but I'm not sure what it really means.
So what have others done. Has anybody had success with the rubber spacer approach.
The fuel system is a non redundant system. One strike and you're down. It's not an area I care to be "experimental" about.