[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Blown Engine question...]
--0-490542033-1052155748=:2852
Content-Type: text/plain; charset=us-ascii
On my stock JH 1.8 8v; I had the key pin shear. The crankshaft itself was only a little damaged, but the keypin on the crank sheared all the way around/through the crankshaft timing belt gear. -Rob
Eric S <scirocco81@vwmail.net> wrote:Cathy,
This keyway problem.....I personally believe it is a 16v problem only...I haven't heard of any 8v guys experiencing this...has any 8v guy here had their crank keyway break?
My theory is, the added stress of the 8 extra valves and extra cam and cam chain is too much stress on the timing belt and keyway...
I'd only expect a diesel 8v to experience this, if any 8v has (added stress on the timing belt from the injection pump).
--
Eric
www.VintageWatercooleds.com
79 VW Iltis
81 Scirocco S (*TDI* swap and complete restoration in holding pattern)
81 Rabbit Truck LX Diesel (Waiting for BAE Turbo Install)
83 Scirocco Wolfsburg
91 Cabriolet (2.0 Crossflow 8v swap and mechanical rebuild in progress)
--- Cathy Boyko wrote:
>Obviously oil figures prominently. I killed a 350 back in the day when the oil
>pump stopped working, lots of oil in it, valves got noisy, then it died (no
>kidding eh?). Siezed piston, snapped connecting rod. (I was running a guy at a
>light too!) It got an oil pressure guage after that. As for ours, not a total
>write off, but serious, is the ever popular crank keyway problem (this gives
>what is best described as "continuously variable timing", but not in a good
>way.) That's what lead to my only two new engines.
>Cathy
>1987 2L 16V "the silver headache"
>1980 running parts car
>looking for Rocc #3
>
>Cory Langford wrote:
>>
>>
>> I have seen a number of listers having real troubles with their engines
>> over the last year. Thrown rods, broken cranks, broken wrist pins, etc,
>etc.
>>
>> Having only ever taken out a head gasket. I figure it might be time to get
>> a good list of things that could go wrong and their symptoms :)
>>
>>
>> So what are the obvious symptoms of the various ways we can kill an
>engine...
>>
>>
>> Cory Langford
>> '86 turbo project - running, just needs tuning :)
>> '79 Cheap Ass turbo daily driver - Restore in progress...
>> '65 Ghia - The next project in the garage
>>
>> _______________________________________________
>> Scirocco-l mailing list
>> Scirocco-l@scirocco.org
>> http://neubayern.net/mailman/listinfo/scirocco-l
>>
>
>
>
>
>_______________________________________________
>Scirocco-l mailing list
>Scirocco-l@scirocco.org
>http://neubayern.net/mailman/listinfo/scirocco-l
_______________________________________________
Scirocco-l mailing list
Scirocco-l@scirocco.org
http://neubayern.net/mailman/listinfo/scirocco-l
---------------------------------
Do you Yahoo!?
The New Yahoo! Search - Faster. Easier. Bingo.
--0-490542033-1052155748=:2852
Content-Type: text/html; charset=us-ascii
<DIV>On my stock JH 1.8 8v; I had the key pin shear. The crankshaft itself was only a little damaged, but the keypin on the crank sheared all the way around/through the crankshaft timing belt gear. </DIV>
<DIV> </DIV>
<DIV>-Rob <BR><BR><B><I>Eric S <scirocco81@vwmail.net></I></B> wrote:</DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Cathy,<BR><BR>This keyway problem.....I personally believe it is a 16v problem only...I haven't heard of any 8v guys experiencing this...has any 8v guy here had their crank keyway break?<BR><BR>My theory is, the added stress of the 8 extra valves and extra cam and cam chain is too much stress on the timing belt and keyway...<BR><BR>I'd only expect a diesel 8v to experience this, if any 8v has (added stress on the timing belt from the injection pump).<BR><BR>--<BR>Eric<BR>www.VintageWatercooleds.com<BR><BR>79 VW Iltis<BR>81 Scirocco S (*TDI* swap and complete restoration in holding pattern)<BR>81 Rabbit Truck LX Diesel (Waiting for BAE Turbo Install)<BR>83 Scirocco Wolfsburg<BR>91 Cabriolet (2.0 Crossflow 8v swap and mechanical rebuild in progress)<BR><BR><BR>--- Cathy Boyko <LOSINIT@USA.NET>wrote:<BR>>Obviously oil figures prominently. I killed a 350 back in the day when the oil<BR>>pump stopped working, lots of oil in it, valves got noisy, then it died (no<BR>>kidding eh?). Siezed piston, snapped connecting rod. (I was running a guy at a<BR>>light too!) It got an oil pressure guage after that. As for ours, not a total<BR>>write off, but serious, is the ever popular crank keyway problem (this gives<BR>>what is best described as "continuously variable timing", but not in a good<BR>>way.) That's what lead to my only two new engines.<BR>>Cathy<BR>>1987 2L 16V "the silver headache"<BR>>1980 running parts car<BR>>looking for Rocc #3<BR>><BR>>Cory Langford <CORYLANG@DCCNET.COM>wrote:<BR>>> <BR>>> <BR>>> I have seen a number of listers having real troubles with their engines<BR>>> over the last year. Thrown rods, broken cranks, broken wrist pins, etc,<BR>>etc.<BR>>> <BR>>> Having only ever taken out a head gasket. I figure it might be time to get<BR>>> a good list of things that could go wrong and their symptoms :)<BR>>> <BR>>> <BR>>> So what are the obvious symptoms of the various ways we can kill an<BR>>engine...<BR>>> <BR>>> <BR>>> Cory Langford<BR>>> '86 turbo project - running, just needs tuning :)<BR>>> '79 Cheap Ass turbo daily driver - Restore in progress...<BR>>> '65 Ghia - The next project in the garage<BR>>> <BR>>> _______________________________________________<BR>>> Scirocco-l mailing list<BR>>> Scirocco-l@scirocco.org<BR>>> http://neubayern.net/mailman/listinfo/scirocco-l<BR>>> <BR>><BR>><BR>><BR>><BR>>_______________________________________________<BR>>Scirocco-l mailing list<BR>>Scirocco-l@scirocco.org<BR>>http://neubayern.net/mailman/listinfo/scirocco-l<BR><BR>_______________________________________________<BR>Scirocco-l mailing list<BR>Scirocco-l@scirocco.org<BR>http://neubayern.net/mailman/listinfo/scirocco-l</BLOCKQUOTE><p><hr SIZE=1>
Do you Yahoo!?<br>
<a href="http://us.rd.yahoo.com/search/mailsig/*http://search.yahoo.com";>The New Yahoo! Search</a> - Faster. Easier. Bingo.
--0-490542033-1052155748=:2852--