honda305 Home honda305 Auctions honda305 Gallery honda305 Forum


honda305.com Forum

Login
□ Search
□ FAQ 
□ 
Vintage Honda Owners,
Restorers, Riders and
Admirers

Oil Pump Rebuild

User avatar
Jethro
honda305.com Member
Posts: 351
Joined: Fri Dec 25, 2009 1:26 am
Location: Helena, Montana

Post by Jethro » Sun Jan 08, 2012 12:42 am

Nice work man. I think I mentioned this when I talked with you the other day but there is another post a while back that Jensen wrote up. Basically he was saying the thickness of the gasket, or lack of I should say, plays a key role in that you want the gap between those gears and the housing as small as possible without causing any excessive friction. So I ended up using the original gasket when I did my rebuild simply because it had been squished between the housings for so many years that you could actually tell the difference in the thickness of the two. Anyway, so considering how much abuse your oil pump has received, I think your pump will be much better off than if you had not taken the housing down on the truing stone. Kinda makes you wish the oil pressure is measurable to do a before and after type of thing.

Anyway, nice work dude.

NBD925
honda305.com Member
Posts: 72
Joined: Sat Apr 10, 2010 12:38 am
Location: Missoula, Montana

Post by NBD925 » Sun Jan 08, 2012 1:06 am

Thanks brother!

The example pump in the pictures looked to bad to use to me and it sounds like others too.

The pump I ended up rebuilding was an almost new oil pump housing with no abuse and I got some new gears too. I ended up taking some metal off of this good pump with the truing station and I hope this helped not sure though. It turns free so I think anything making the cover gap smaller will help as long as there is no big drag. Like you said it would be nice to see a measurable difference.

I've talked with a few people that I consider scholars in the Honda world that have said this is one easy way to help the pressure a little. But don't overdo it. I hope Loud Mouse weighs in with his experience in this matter or if he has heard of this approach.

Post Reply




 

CB-77 | CYP-77 | Road Test | Riding Log | Literature | Zen | Marketplace | VJ Survey | Links | Home