Walbro Install - MA61 Circuit Opening Relay Contact Rating

[82MKII]

Just putting my Walbro in, and was looking at the current draw/ratings on the pump. As other people have mentioned I will upgrade the body wiring to avoid such a large voltage drop to the pump. I have a couple of questions to those who have experience with running them in the car:

a) the Walbro is capable of drawing a lot more current than the stock pump. Has anyone had issues with burning out/overheating the circuit opening relay contacts?

b) the Circuit Opening Relay is fed via the main relay, which is fed via the 15 amp EFI fuse. I notice the Walbro says it should be protected by a 20 amp fuse. So has anyone had issued popping the 15 amp EFI fuse after the installation of their walbro?

Thanks

Peter

[JustCallMeOrlando]

My Walbro was just chucked in my car and has been running flawlessly since the day I did it, about 30000km ago now.

One thing I would suggest though, is upgrading the run of wiring from the Circuit Opening Relay to the pump itself, and giving it a good ground. I say this, because the voltage drop down my factory wiring was apalling. I'd have about 13-13.5V (? from memory) when running at the COR, and like 11V at the pump. I replaced it with some nice new wiring, and created a new earth at the rear of the car, and the voltage drop is stuff all now.

Hope that helps.

Nathan

[whatthe?]

In my silver car I had this issue, just ran some nice heavy gauge wire from the relay to the pump. No issues. In the white car the walbro went straight in, is receiving a nice healthy 12.7 volts from factory wiring. Just one of those things I guess....

[82MKII]

Thanks guys - looks like I'm safe with the relay then.
I'll make sure I run some extra cable back to the pump.

[Azzamk2]

any1 got the price-part number for the ma61 walbro? thanks

[JustCallMeOrlando]

I'm using the generic external one from Importbitz. I'm assuming Peter is as well, given he has an external one too.

[RObErT_RaTh]

Hmmm I'm running a walbro 255 l/h and haven't changed any electronics... maybe I should...

[whatthe?]

Ebay is your friend. Search GSS341 or 342. Just make sure it's genuine! There's lots of knock offs around

[82MKII]

Yep - I got mine off ebay (Importbitz were out of stock). The guy gives 100% guarantee they are genuine, and seems to have enough links to verify his claim.
The part no for the external one is GSL 392.
The only problem is I needed extra fittings (the universal fittings they supplied don't fit my application). Couplers in Malaga soon sorted that out.

Regards

Peter

[JustCallMeOrlando]

What extra stuff did you need Peter?

[JustCallMeOrlando]

BTW, Couplers in Malaga have always been champs and helped me out with random stuff like that.

[82MKII]

The inlet barb supplied with it was only 10mm, I needed half inch - that was easy.
On the outlet side, I'm still trying to retain the pulse damper/banjo arrangement. I think between Couplers & a fuel injection plac I should be able to get it sorted out. If not I'll just do what you did.

Regards

Peter

[CrUZida]

Your Walbro does have a serial number on it?

And did cost more than $160AUD ?

[82MKII]

Yes - more than AU$160.
It has three numbers on it:
- the part number
- the patent number
- five digit number I assume is the serial number.

Regards

Peter

[CrUZida]

Cool, just making sure it was legit.
All of the ones on eBay that are new and under $150 are fake.