Carbs and fuel pump relay, my solution |
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Carbs and fuel pump relay, my solution |
hcdmueller |
Feb 2 2009, 03:27 PM
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#1
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????????????? Group: Members Posts: 542 Joined: 4-February 06 From: UK Member No.: 5,527 Region Association: England |
I am running carbs on my 2056 so I performed the simple mod as described by SirAndy in the Tech Articles. One thing I have noticed with my car is that my fuel pump runs continuously with the key switched on. The fuel pump is a rotary one that I bought from the Type4Store.
I didn't like that fact that my pump kept running so I took matters into my own hands. I modified a Bosch CIS fuel pump relay to work with my car. It needs a signal from the negative side of the coil to provide power to the fuel pump. So unless the engine is cranking or running it won't start up the pump. Nice to have the extra safety margin as well. The relays are easy to find in the junk yard. I only paid a couple dollars for 3 of them. Attached image(s) |
Tbrown4x4 |
Sep 29 2019, 09:03 AM
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#2
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Senior Member Group: Members Posts: 705 Joined: 13-May 14 From: Port Orchard, WA Member No.: 17,338 Region Association: None |
The Revolution thingy looks OK but a 3 second prime for carbs is no where near enough down here in hot Florida. The 356 I used to have and my present 914 with carbs always require(d) about 10 seconds of prime. If that thing was adjustable I would consider it. Ansbacher I have no experience with this, because I daily drive mine. I will say it always fires up right away no matter how cold or rainy. (I did park it for a few days last winter when we had some snow.) (IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-17338-1569769399.1.jpg) I would like to mount some stud tires and try it out, but I'd hate to stuff it into a guard rail. Anyway, I also like that if the module fails, it can be bypassed easily by clipping the wires in and out of the module for the fuel pump power, or (God forbid) snapping a Scotchlok across them. |
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