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| Not enough oil in rocker gear https://www.ausmini.com/forums/viewtopic.php?f=2&t=96251 |
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| Author: | hpal [ Wed Nov 01, 2017 8:05 am ] |
| Post subject: | Not enough oil in rocker gear |
Hi, I haven't had my mini running for long periods as I'm still working on it, however, when I pulled the head off the rocker gear was dry as a bone like there was no oil getting there at all and lots of old gunky burnt stuff. It has oil pressure when running. Also, I pulled a cover plate and looked in the pushrod/follower compartment and it was dry as well, there was even speck of rust on the walls. What should I be checking to rectify this? Maybe an oil gallery blocked? Thanks |
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| Author: | goodie [ Wed Nov 01, 2017 9:09 am ] |
| Post subject: | Re: Not enough oil in rocker gear |
You might have to put up a bit more imfo/ history on the engine , from reading back through your posts it appears that your motor came as a bog stock 1100 , things like has it ever been rebuilt , if so how long ago ,and by whom ie: backyarder or a qualified engine builder , did you get any imfo or paperwork with it , was it running when you got it , if not , what have you had to do to get it going? , just lots of things to piece the jigsaw together . There's quite a few things that could come into play here and that makes it hard to diagnose , being that dry in the top end doesn't sound good , but i'm sure some other better qualified people on here may be able to give some more ideas on it . |
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| Author: | hpal [ Wed Nov 01, 2017 10:22 am ] |
| Post subject: | Re: Not enough oil in rocker gear |
I wasn't given any info on the engine unfortunately. Not sure if has been rebuilt but I don't think it has. I know that the head is in good original condition and hasn't even been skimmed before. Maybe I'll crank it over briefly with the head off and see if oil is being pumped up? |
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| Author: | simon k [ Wed Nov 01, 2017 12:22 pm ] |
| Post subject: | Re: Not enough oil in rocker gear |
it's not hard to get the rocker posts in the wrong order - I've done it before, and know others who have - one of the posts has an oil feed hole in it that needs to line up with the oil feed hole in the head. If it's not the rocker posts in the wrong order, then it'll be the front cam bearing in wrong and blocking off the oil feed hole completely You can check/fix the rocker posts without taking the head off or needing a new head gasket. Leave the front head bolts/studs in and undo the rears, take the rockers off, rearrange, reassemble and retorque the rears. I like to drain the water just for extra insurance, it *shouldn't* leak under the gasket, but water is cheaper than water in oil |
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| Author: | hpal [ Wed Nov 01, 2017 3:11 pm ] |
| Post subject: | Re: Not enough oil in rocker gear |
Thanks mate that will be a great starting point to check. |
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| Author: | simon k [ Wed Nov 01, 2017 4:26 pm ] |
| Post subject: | Re: Not enough oil in rocker gear |
hpal wrote: Hi, I haven't had my mini running for long periods as I'm still working on it, however, when I pulled the head off the rocker gear was dry as a bone like there was no oil getting there at all and lots of old gunky burnt stuff. It has oil pressure when running. Also, I pulled a cover plate and looked in the pushrod/follower compartment and it was dry as well, there was even speck of rust on the walls. What should I be checking to rectify this? Maybe an oil gallery blocked? Thanks oh hang on, I just reread that - you already have the head off... oops, I read it as 'rocker cover'... smart yeah, crank it for a bit and see if oil comes up. |
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| Author: | Besser [ Thu Nov 02, 2017 11:06 am ] |
| Post subject: | Re: Not enough oil in rocker gear |
Sounds like the rocker post! some people even flare the mating holes to get better lineup. If you find this was the problem then do a full oil/filter replacement. Most wear happens on dry starts and your behind the 8 ball as it stands. If you've done some serious cranking dry then expect more damage could arise. 
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| Author: | hpal [ Thu Nov 02, 2017 11:51 am ] |
| Post subject: | Re: Not enough oil in rocker gear |
Pulled the rocker shaft back out and found that it was in wrong! Good call fellas. Will flare the holes too. |
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