Fuel Pumps - Definative answers

[snaphappyninja]

ok, there has been a lot of threads on this topic but mine has finally gone bang so i thought it was time for a definative answer (Or at least a list of the options people have used).

Any and all opinions welcome.

(apologies if this has appeared before, did a search through the archives and didn't find owt!!)

[YEN_POWELL]

Mikuni vacuum pump from Africa Queens (about £50).

Remove old pump, zip tie or bolt new pump in its place on the frame and plumb the pipes back on
Ride the bike

[Dilbert]

See Maverick's comments on the Pieburg at http://www.xrv.org.uk/phpBB2/viewtop...?p=13681#13681[url]
Yen
I've ordered the Mikuni from AQ and the price is now more like £80 including shipping, etc!
Being a mechanical engineer I don't trust anything electrical, but the Pie does seem cheap and popular?

[robelst]

Pierburg and Mikuni are popular replacements, just do a search on this site. I liked the idea of the Mikuni being non-electrical but then read quite a few people struggling with the Mikuni (on Yahoo and Atic's mailing list): I can't say if this was due to wrong fitment (I believe Yamaha uses them too, and are not known to break), but having had enough trouble I went for the Pierburg myself. Works well, so far so good.

You can also find Tjompen's article on patching up the standard Mitsubishi pump, but personally I would only do that if the pump is still relatively new.

[kiroh]

Did the Tjompens fix on the original pump and it worked fine for about 6 months, after which the pump died completely.

Ordered Pierberg pump from Germany, and it arrived in 2 days for the price of £52.84 including postage. Fitting is easy and it works a treat and it's lighter than the old one. I've noticed improvement in engine responce and fuel economy. Has anyone else noticed this too?

[robelst]

I've noticed improvement in engine responce and fuel economy. Has anyone else noticed this too?

Compared to the broken pump, yes
Otherwise, no, not really. Not sure how that could work anyway, the pump should not have a direct effect on the engine fueling, it just keeps the fuel level topped-up in the float chamber.

[Maverick]

I have noticed the bike pulls a bit better but this could be that the original pump has actually been on it's way out a long time ago.

Will keep you guys updated but reckon for £50 buying the Pierburg is fine if you travelling/commuting around places where you can get help if it breaks. Personally if I planned going off road and remote the mechanical pump seems to be a logical choice and probably a safer bet. The size of the Pierburg is also so small you can easily strap a spare somewhere onto the frame.

Going up to Donnington tomorrow so will check my fuel consumption, for some time now it has gone down from 200 miles to reserve to 190 but there is several factors that could account for that. Remus fitted, need to renew airfilter and haven't checked/balanced the carbs in last 8k.