12v fuel plates: 1 piece or two piece?

[EBottema]

Some guys sell these on ebay and some are one piece milled and the others are two piece bolted together. What do you guys think is better?



how is the factory torque plate made?





thanks

 

[slacker]

I went for the one piece as i think that the two piece could come apart in the pump. The factory one is also two piece but is riveted together not held together with screws

 

[roosp]

The two piece design is superior if the profile plate is heat treated "tool steel" and not a case hardened 1018-1020 mild steel. We need to remember the profile plate is wear surface for the leaver to slide up and down against.

Bolting together is fine when they are locktited at assembly. The one piece design you refer to is probably a 1018-1020 mild steel case hardened design (only about . 008-. 010 thick hard surface, with a soft core). A good quality file will let you know if it is hard or not.

Tool steel is running at about $4. 00-$5. 00 a pound and is more difficult and timely to machine. If the one piece is tool steel and truly heat treated I would be concerned about warpage.

From just a manufacturing and cost point of view, a one piece design of either material is far more costly to machine and material (your cutting over 50% it away in chips).