Oil control issues on a 1641
 

Does anyone have any experience with a bagger for a 48in deck on a cub 1641?. Not looking for a fan assist, just a bagger. All I see are options for 46. Does the 48 not have enough vacuum? Has anyone ever taking, oh say any Craigslist bagger and modified / fabricated with good success ? Thanks

Having had both a 46" and 48" on a 1641, I can tell you the 46" deck is quite capable of filling all three sacks with grass clippings and/or dry leaves. If you take the bags off, the 46" deck likes to leave a nice windrow of clippings on your yard. I have been told by a Cub dealer, that's why that deck was discontinued.

The 48" deck MIGHT gather clippings but I don't think the made a bagger for that deck. If they didn't, there must have been a reason.

The 48" deck does a nicer job of mowing the lawn than the 46" in my opinion.

The 46" deck when used with a lawn vacuum like EZ VAC will not leave a single uncut blade of grass or a leaf on the lawn.

Thanks for the reply mike, Kinda what I expected to hear , but not what I wanted to hear. I have some serious other problems with the motor now so the deck doesn't do me any good at the moment.

What's the problem with the engine? :bigthink:

1641 valve seals
 

hello everyone,
I looking for some advice on a 16hp vanguard ohv in my 1641. Problem is that is burns oil, I've replaced head gaskets and it will pull 145 psi on my compression gauge. The other day it was running low on oil so I added about a 1/2 quart directly into the fill hole on top of the head. Soon as I started it back up, basically all the oil was pouring directly out the exhaust, smoked up my entire yard. My question is, has anyone ever worn out valve guides on one of these engines, Or just seals from improper valve adjustment?

James, here is a post I did on a 3165. What do your guides look like? I ended up replacing the head and it is still going strong today.
http://www.onlycubcadets.net/forum/s...highlight=3165

The valve seals and valve adjustment can be completed fairly easily from the top. Would need valve cover gaskets if you have not recently changed those.

Here is a 1440 I did not long ago. Spent a lot time and too much cash.....

http://www.onlycubcadets.net/forum/s...highlight=1440

well guys I put the new valve seals in, reassembled the motor, still smokes likes crazy, I guess my rings are bad, even though it lunged 145psi per cylinder. The air filter is extremely dirty and I'm assuming that is what has led to its failure. Ive only owned this for a short period and its been one thing after another. So debating whether to do a repower or new piston/rings

Sam Mac, The engine smokes extremely bad, I did a compression test and got 145psi in each cylinder, so I figured it was just bad valve seals, I replaced all 4 seals, and it still burns oil like there is no tomorrow. So I'm at a loss whether to replace rings and pistons or repower. Ive only had this for a short time, and new parts are adding up fast.

Put air pressure on the cylinders with the piston up and both valves closed. See if you can hear air leaking into the crankcase. If so, you likely have blown head gasket(s). Especially if the cooling fins are full of dirt, oil, mouse nests and grass.

If you pull a head, look for the gasket to be blown over towards the open hole to the crankcase.

See your other thread for a possibility.

Has new head gaskets , engine is spotless nothing between fins just shiny aluminum

In the other thread you have going you mentioned that the air filter is extremely dirty. Have you tried running it with the air filter removed to see if it's puking oil into the air filter housing? I had one that was so bad I had to put a hose to a can just to get it to stay running. Turned out to be a head gasket.

The air box doesn't really have any oil in it , oil is only going one place , straight out the exhaust . Tip of the muffler stays wet

This is a strange one. How many hours on this engine? The one I mentioned burned the head gasket between the cylinder and the oil return. I also had one that the exhaust valve guide moved up in the head this in turn caused a push rod to bend. When you replaced the head gaskets did you resurface the heads? They are notorious for warping. They are easy to resurface with a piece of glass and some wet sand paper. Here are a couple before and after pics of the one that I did most recently. If you look at the first pic you can see the place that burned through into the oil return.

There is 707 hours on the machine, I bought it with maybe 650ish. Since then, I have replaced battery, Pto Clutch, Voltage Reg. and stator. I did not resurface the heads, which I probably should have. I do not have the same gasket you have in your pictures, all I could find was the metal one. Its been burning oil since about 670 hours, That's about when I lashed the valves .I initially thought it was head gasket so replaced which did nothing. Last week it ran towards the low side of oil so I added oil to the fill cap, keep in mind the engine was still warm, fired it back up and it smoked, Like a automobile that had a major head gasket leak with coolant, the smoke was so heavy it was coming out the exhaust basically white, and dripping on the grass from muffler. My thought was well valve seals must be bad, for oil to be on top of piston. Replaced them, which they are way more tight than the ones I pulled off. Still smokes, just not as bad as when I added the oil. I pulled another compression test, prior to replacing the valve seals, right after the major smoke show. got 145 on one side 165 on other, took engine out, pulled heads one side was full of oil, Hence the 165, I tore the entire engine apart, pulled pistons, crank, everything out to inspect, Everything looked perfect so reinstall and fired up, still smoking, but lungs 145 on each cylinder now. Do you think its possible to have bad rings and still pump 145psi in each cylinder?

Update I just did another compression test, current situation 160psi on 1 cylinder 130 on the other

If your head gaskets are sealing, you have that much compression, no oil to speak of in the air cleaner then I'd GUESS the oil just about has to come past the oil rings which they don't have any affect on compression.

I've only had two Vanguards that were "bulkers" and they were both blown head gaskets due to overheating. One of them quit smoking right away. The other took a long, long time to quit smoking due to the muffler being loaded up with oil.

I've seen a Vanguard that was broke (rod) but I've never seen one worn out. The last head gasket I replaced, the dealer gave me a thicker composition head gasket instead of a steel shim. I don't know what that's all about but I used it.

You need the engine numbers in order to get the proper head gasket from Briggs. I questioned using the Graphoil gaskets as opposed to the gaskets that had the fire ring with tech support at Vanguard. I was assured that the Graphoil gaskets were the proper ones for my engine so I went with them, so far so good. Both my heads were warped and if you didn't resurface yours I'd be looking in that area. There is a how to in the tech library on how to do it.

Edit: link to how to resurface your heads. http://mgonitzke.net16.net/tools/headgasket.pdf

Installed new pistons and rings, resurfaced the heads, new head gaskets again, I didn't have any glass, but I had a piece of 3/4 marine board that I figured had to be pretty flat. Anyhow I got it all together and about 1 hour on it with no smoke. very pleased