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 Old Hutcho
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| posted on October 25th, 2008 at 05:43 PM |
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Its solid!
I have a problem. I built an 1835 with stock rocker geometry, bigger heads (slightly) stock cam, twin kads, new everything. New empi bypass oil
filter.
My mate has driven it for a month or so and done something around 1000 miles. Longest trip was about 40 miles in one hit. We had about 40psi oil
pressure at operating temp.
Motor was going perfectly, came home from work one night and drove it into his garage, all was well. Went to start it two weeks later and click click
click. New battery. Same result. Had starter checked. No problem. Same result.
Its in the garage now, out of gear with the handbrake off. We can select all gears. The motor is ROCK SOLID. It wont even begin to turn either
forward or backward. It wont move. Generator belt off. Same thing. Nothing obvious jamming any external pulleys. The engine is tight in its
mounts. No excessive oil in the cylinders. No water or other foreign objects in the cylinders.
Tappet covers off. All rockers intact and appear to have clearances correct. Tappet covers have a small amount of oil in them, less than I would
expect.
I am thinking its grabbed a bearing. Why would God do that. Engine running perfectly and when you leave it for a couple of weeks its rock solid.
Why would he do that?
Searching for answers of Nowra NSW. (preferably simple thing I have overlooked)
Old Hutcho
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Sides
A.k.a.: Dave Sidery
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| posted on October 25th, 2008 at 06:12 PM |
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I had a similar thing with my old 1835 not long after it was first built... turned out that one of the carbs had leaked fuel down into one cylinder,
and jammed the thing solid. I unstuck it by turning the motor over backwards... stuck it in 4th, handbrake off and then gave the car a good shove
backwards.
If that does turn out to be it, make sure you swap out the engine oil before starting it... as well as getting the carbs sorted.
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 matberry
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| posted on October 25th, 2008 at 06:29 PM |
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What fuel was she running on?
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
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Old Hutcho
Officially Full-On Dubber
Posts: 281
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| posted on October 25th, 2008 at 06:37 PM |
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Dave.
I took the plugs out and tried. Nothing down the bore. No excess oil, no fuel.
Mat
It was running on premium unleaded.
Keep em coming lads. Im out of ideas.
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trickysimon
A.k.a.: Simon Azzopardi
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| posted on October 25th, 2008 at 07:36 PM |
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What pulley are you running and what sort of case? I read somwhere that if your using an aluminium pulley on an alluminium block without a (sandseal?
i think) The pulley can somtimes grab on the case, seizing it. Think I read it on shoptalkforums, I'll try and find it for you.
Simon
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Old Hutcho
Officially Full-On Dubber
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| posted on October 25th, 2008 at 07:38 PM |
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Simon
Stock pulley on an AS41 case.
thanks for the help
Old Hutcho
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Sides
A.k.a.: Dave Sidery
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| posted on October 25th, 2008 at 08:47 PM |
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What's the end play like ???
If you put a socket and bar on the pulley nut, can you get any movement in either direction ???
VWDCQ vice pres & web dude - vwdcqinc.org.au
Join a car club - get car peeps
My toys
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Joel
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| posted on October 25th, 2008 at 09:33 PM |
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exact same thing happened to someone with a new engine on samba
ill see if i can dig up the thread, might have some usefull things for u to check
edit:
http://www.thesamba.com/vw/forum/viewtopic.php?t=307813&highlight=locked
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matberry
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| posted on October 25th, 2008 at 10:05 PM |
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Second the end float spec after flywheel torqued on?
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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Old Hutcho
Officially Full-On Dubber
Posts: 281
Threads: 54
Registered: January 1st, 2004
Member Is Offline
Location: Bomaderry NSW. 2541
Theme: UltimaBB Pro Blue ( Default )
Mood: NSW Blues supporter to the end!
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| posted on October 26th, 2008 at 12:37 AM |
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Joel
Most interesting thread yet. My money is on a locked up thrust bearing or a main bearing for some reason. He was using an external filter and so am
I. I wonder. He had 50psi and I had 40. He drove it fine into the garage and described exactly the same scenario.
Looks like out she comes. But not before I measure end float.
Many thanks. Youve been very helpful.
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Old Hutcho
Officially Full-On Dubber
Posts: 281
Threads: 54
Registered: January 1st, 2004
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Location: Bomaderry NSW. 2541
Theme: UltimaBB Pro Blue ( Default )
Mood: NSW Blues supporter to the end!
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| posted on October 26th, 2008 at 12:38 AM |
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Sides.
No movement in either direction. I mean its ROCK SOLID mate. Never seen one so immoveable.
Got a post after yours which is enlightening. thanks for your help.
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Old Hutcho
Officially Full-On Dubber
Posts: 281
Threads: 54
Registered: January 1st, 2004
Member Is Offline
Location: Bomaderry NSW. 2541
Theme: UltimaBB Pro Blue ( Default )
Mood: NSW Blues supporter to the end!
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| posted on November 15th, 2008 at 04:45 PM |
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Its out!
Well, its out.
The rear main bearing has grabbed hold of the crank. Its spun the bearing in the case, and elongated the dowel hole. I now suspect the bearing moved
far enough to obstruct the oil feed gallery.
I am not certain how the oil moves through the galleries in the case, but I am thinking there have been flow on issues concomitant with the above
failure. At least, thats what I think. Theories welcome.
The cam shaft bearings (new with a new cam shaft) have stuffed the cam. Its a catastrophic failure which I reckon will require a new case, new crank,
new cam and bearings. The top end is fine.
A mate of mine who IS a good engine builder informs me that he is aware of at least three similar failures. I got my bearings from him (Brazilian)
and all of his failures were using the same brand of bearing. If you are using new bearings I am happy to field questions offline re brand etc.
regards
Old Hutcho
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