Triumphrat

Mrsinister · 07-08-2008, 11:57 PM

I have a 79 750 Bonnneville, and was told that 6 pints was what the frame takes? Which is 3 Quarts? I only put in two just because thats what I had at the time and it was boiling over. Is it the cap?
Mr sinister

OzBloke · 07-09-2008, 01:04 AM

MrSinister,
What do you mean by boiling over? Was the oil actually boiling, or do you mean it flowed over the top of the filler hole when you took the cap off?

If the former - you may be riding a bit hard......(jocularity)

If the latter - the frame takes approx 2.5 litres (5.4 US Pints) when cold. Oil expands when it's hot. You may also have had some oil already in there, or wet-sumped and pumped up from the crankcase.

You should have an o-ring seal on the cap/dipstick to stop oil flowing out. That why you should never check oil levels when engine is hot.

Mrsinister · 07-09-2008, 09:12 AM

THis was happening when I was riding it. Id stop and see oil coming down on to my side panels. and then stop and see that there was oil all around the cap.
I dont think I was riding it to hard because i was only in second gear. and it was also doing it in first.

I also cleaned the frame of all the old oil yesterday, I let it drain for some time before sealing it back up and putting in the new oil. And the engine was cold when I did it aswell. All I can think is my cap has to be bad. It doesnt have a dip stick on it. So maybe its the wrong cap.

GrandPaulZ · 07-09-2008, 10:35 AM

Did you also drain out the crankcase from the sump plug on the bottom?

Did you also drain out the primary case from the drain plug at the left rear?

All of these are integrated chambers that contain engine oil. They must ALL be drained, flushed, and refilled at the same time. Follow the book on quantities, you just need 1/4 cup in the primary case.

The main engine crankcase should not have more than 1/2 cup or so under normal running conditions.

quagmire · 07-10-2008, 10:07 AM

People have mentioned numerous times about "flushing" out the system. Paul, can you explain this a bit. Flush with what and how?

GrandPaulZ · 07-10-2008, 10:53 AM

I flush with light weight oil (about a quart of 10W30 detergent in the oil tank), run the bike at idle for a couple of minutes, then dump.

Woolly · 07-10-2008, 01:34 PM

Quote:

Originally Posted by GrandPaulZ

I flush with light weight oil (about a quart of 10W30 detergent in the oil tank), run the bike at idle for a couple of minutes, then dump.

After you've had your dump, do you then drain the flushing oil out? (sorry, English humor).

GrandPaulZ · 07-10-2008, 01:43 PM

Yes, I use a two step procedure and flush the flush with 10W40, then flush the flush flush with 20W50.

OzBloke · 07-10-2008, 05:00 PM

Well, I thought it was funny, Woolly.....

Woolly · 07-10-2008, 08:38 PM

Quote:

Originally Posted by OzBloke

Well, I thought it was funny, Woolly.....

Thanks, Mr Oz - I thought about explaining Pom slang, but might have been wasted