Author Topic: I think I blew my oil pump at 75mph, Pre case split findings, with gory pics? (Read 8954 times)

bryanj · « **Reply #25 on:** July 25, 2010, 03:07:18 AM »

Last time i saw something like that a bloke left a 3/8 drive 12mm socket on a big end nut----made a big bang when he tried to start it!

manjisann · « **Reply #26 on:** July 25, 2010, 04:29:40 AM »

Quote

Last time i saw something like that a bloke left a 3/8 drive 12mm socket on a big end nut----made a big bang when he tried to start it!

Haha, I don't think that was it since I've put well over a thousand miles on the thing since i got it back together.

As requested I'll be tearing the engine apart at some point to see what went wrong and what is salvageable.

I only had a chance to pull the left side valve cover on my spare engine, but the condition was encouraging. There was oil in the top end and everything was shiny and looked good. The outside needs a good cleaning as there are pine needles and dirt everywhere, and some of the case paint is peeling (since the cases are aluminum, this is just a cosmetic issue right?) With any luck it will be as easy as doing a tune up and an oil change and she'll be good to go.

Does anyone have any other suggestions on what I should look at/for before putting the engine in the frame? I'd really like to avoid putting it in and having to take it out again if at all possible. Can I do a compression check with the engine out of the frame?

Thanks all,

Brandon

bryanj · « **Reply #27 on:** July 25, 2010, 07:34:42 AM »

Only by hand, if it turns over OK without any sticking and feels the same coming up to every compression you are 50% there

Terry in Australia · « **Reply #28 on:** July 25, 2010, 07:22:38 PM »

Shove that sucker in your frame Manji, (the other one has to come out anyway, it's only a paperweight now) give it some fresh oil and a new filter, check and adjust your valve clearances, ignition timing, cam chain tension etc, spray a little light oil or WD40 down each spark plug hole, install new plugs, and hit the button! Cheers, Terry.

manjisann · « **Reply #29 on:** July 25, 2010, 07:52:20 PM »

Ahh Terry, I love your enthusiasm and optimism!

Brandon

scottly · « **Reply #30 on:** July 25, 2010, 08:15:02 PM »

I would leave the valves alone, and the cam-chain adjuster,(don't fix it unless it's broke) and the oil,(change it and the filter as soon as you get a handle on how, or if, it runs) just check the static timing to make sure you will get a spark, and start her up!! Good luck!!

Soos · « **Reply #31 on:** July 28, 2010, 04:45:54 PM »

Quote from: Terry in Australia on July 25, 2010, 07:22:38 PM

Shove that sucker in your frame Manji, (the other one has to come out anyway, it's only a paperweight now) give it some fresh oil and a new filter, check and adjust your valve clearances, ignition timing, cam chain tension etc, spray a little light oil or WD40 down each spark plug hole, install new plugs, and hit the button! Cheers, Terry.

In the frame is best IMO as well, a little WD in the cylinders, clean and gap the plugs, check valve clearances, and all that.

One thing extra I like to do beyond the initial oil and filter change is once again chenge oil and filter, IF she runs, and after 50-100 miles to clear out any gunk that may have been dis lodged by the freshly circulating oil in a recently dead motor.
Don't forget to drop the oil pan BEFORE the first oil change to get any sediment out.

l8r

Frankenkit · « **Reply #32 on:** July 28, 2010, 05:11:52 PM »

...and to see if there's anything else new, special and scary after the first pan-dropping.

manjisann · « **Reply #33 on:** July 30, 2010, 09:03:29 PM »

Here is what I found when I removed the carbs. The metal bits were all the way through the carbs and back into the pods. At this point I'm thinking this just went from a rebuild to a salvage whatever wasn't buggered and go from there. I'll be splitting the cases at some point in the near future I hope. The main goal over the last few days was trying to get my spare engine tested, installed and running.

Brandon

Frankenkit · « **Reply #34 on:** July 30, 2010, 09:06:04 PM »

oh gawd.

manjisann · « **Reply #35 on:** July 30, 2010, 09:12:05 PM »

Yeah, I hope it's just some sort of one in a million fluke occurance, and not something I did

However it does explain the box of broken glass sound I heard when i hit the starter to see if it was siezed. In a very sad, morbid sort of way, I'm really looking forward to opening this baby up and seeing what went wrong.

Brandon

scottly · « **Reply #36 on:** July 30, 2010, 09:26:16 PM »

Metal pieces puked into the carbs is GORY!! I'm guessing aluminum piston chunks.
Any progress with the spare engine?

manjisann · « **Reply #37 on:** July 30, 2010, 09:30:29 PM »

Yup, she's a runner, but is smoking out all 4 pipes. I posted a separate thread for that, I figured I'd keep this one for the buggered engine. I'll post pics once I crack her open. Hopefully it's not too bad, but from all the metal bids I'm afraid it will look like a grenade went off in the engine. Oh well, I've always wanted to tear one completely apart, guess I have a really good reason to now.

Brandon

bryanj · « **Reply #38 on:** July 30, 2010, 10:54:17 PM »

Now thats a new one on me cos i never seen bits in the intake that wernt thrown in the carb by somebody, in the exhaust yes after a piston break up.

There is something very odd here, we need lots of pictures of stripdown to put in the memory archive to frighten new people with!

Spanner 1 · « **Reply #39 on:** July 30, 2010, 10:56:03 PM »

Total prank pic, now that I looked at it again

.... maybe the whole thread is a prank... shock, horror ( wouldn't be the first one ! ).
The carb 'disintergrated' and got sucked in to the the intake manifold?? Any malfunction would get blown out the exhaust end of the motor.. very strange !?
We were all sympathising lots until this pic.!!

manjisann · « **Reply #40 on:** July 31, 2010, 03:30:07 AM »

Spanner1, man I wish this was a prank pic, and it was all just my bad sense of humor, but sadly tis all fact. I'm as puzzled as the next person at how all the bits ended up on the intake size with very little on the exhaust side.

Thanks for the empathy all.

Brandon

manjisann · « **Reply #41 on:** July 31, 2010, 04:04:34 AM »

OH, btw, that's actually after I brushed a small amount out to see it closer. And I take exception to being called a lier Spanner

Ok, not really, as it really seems incredible and unlikely that this kind of thing would happen. But oddly enough, a quick blow out of the carbs with some carb cleaner, a good washing of the air filter to get the metal bits that puked back into there and the carbs work on the new spare motor.

Brandon

manjisann · « **Reply #42 on:** July 31, 2010, 05:05:49 AM »

So as i'm pondering what could have caused this a thought struck me, could this have been caused by putting a hole in my piston first?

Brandon

bryanj · « **Reply #43 on:** July 31, 2010, 05:29:04 AM »

Probably not as i would expect that to be vapourised ally not chunks

manjisann · « **Reply #44 on:** July 31, 2010, 05:48:13 AM »

Quote

Probably not as i would expect that to be vapourised ally not chunks

I was kind of thinking the same thing, not to mention, wouldn't I get severe lean running conditions before it happened?

Brandon

cb650 · « **Reply #45 on:** July 31, 2010, 06:02:35 AM »

I bet the intake valve broke then beat the piston to death and let parts come up the intake. And down in the case for that hole.

Terry in Australia · « **Reply #46 on:** July 31, 2010, 06:09:05 AM »

Quote from: cb650 on July 31, 2010, 06:02:35 AM

I bet the intake valve broke then beat the piston to death and let parts come up the intake. And down in the case for that hole.

Damn! Beat me by a few seconds, but yeah, that's what I was gonna say, if the intake valve was gone, the inlet tract becomes the path of least resistance, as it were.

ekpent · « **Reply #47 on:** July 31, 2010, 06:16:52 AM »

Autopsy time.

Pull the valve cover and see if a stem is still there. Send some parts to 754 for his "wall of pain"

Bob Wessner · « **Reply #48 on:** July 31, 2010, 08:07:57 AM »

Don't need the parts, but some pics would be nice, er, sort of, for a gallery area we have set aside for such tragedies. Sorry to hear of your problems. $:-\$

SohRon · « **Reply #49 on:** July 31, 2010, 08:27:32 AM »

OK, I've got my big drink, my popcorn and my Junior Mints and I'm settling down with keen anticipation to watch this incredible mystery unfold. You must, I repeat, you must do an autopsey and let us in on all of the gory details! How in the world did you end up with METAL SHAVINGS IN THE INTAKE MANIFOLD?!?!?!

News:

Author Topic: I think I blew my oil pump at 75mph, Pre case split findings, with gory pics? (Read 8954 times)