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Post by skaterboy on May 29, 2010 0:30:24 GMT 1
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arrdee
L plate rider.
Posts: 43
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Post by arrdee on May 29, 2010 10:37:33 GMT 1
No disrespects to the chap selling this one on eBay, but why don’t you get your original one fully overhauled professionally and then you know what’s been replaced for sure? Gav |
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Post by bryan on May 29, 2010 12:52:20 GMT 1
with Gav on this, the crank is the last bit to remove when you strip an engine so make sure its done properly the first time.
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Post by spondonchris on May 29, 2010 14:36:38 GMT 1
Agreed, i always use Grampian motors in Crosby Merseyside.
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Post by nikfubar on May 29, 2010 22:43:58 GMT 1
Don't know what you are all on about  there's nothing wrong with welded cranks  I'm not bitter, no sir |
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Post by johnlc on May 29, 2010 22:58:24 GMT 1
I have a welded crank in mine have had no problems so far .Was welded as i had missed a gear and revved it sky high twisting it
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Post by nikfubar on May 29, 2010 23:29:39 GMT 1
Wish I'd had the same welder that did yours,  thats how mine twisted |
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Post by bare on May 30, 2010 3:06:48 GMT 1
there's NO buying any Ebay crank of any description. But hey! it's Your $$.
A decent weld job is surprisingly tough and a Zeel Box's rev limiter prevents 'misssed shift' screw ups. Double safeties.
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Post by skaterboy on May 30, 2010 16:53:30 GMT 1
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Post by johnlc on May 30, 2010 20:01:57 GMT 1
I would only buy a crank from ebay to rebuild ,you know what you have then .I have a rev limit of 10,500 rpm just to be safe nowadays
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Post by bare on Jun 1, 2010 17:27:18 GMT 1
So did I.. It's proving too high for reasonable durability. iMO.
Now it's at 10k
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Post by skaterboy on Jun 4, 2010 3:58:07 GMT 1
Hi Gang
Can you look at my last post are these measurment correct for checking the crank . I feel an immenant expensive engine build very soon. ;_) .
Ta Mark
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Post by dredge3 on Jun 4, 2010 8:23:26 GMT 1
3am dont you sleep  They are all in the Haynes. big end side clearance.25 to .75mm con rod small end deflection .36 to .98 service limit 2mm |
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Post by skaterboy on Jun 15, 2010 16:03:58 GMT 1
Hi Maybe a silly question but please humour me is the 4L0 RD350LC AND THE 4L1 250 LC crank shaft the same , led to believe the stroke is the same Mark |
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Post by spondonchris on Jun 15, 2010 16:33:06 GMT 1
Yes its the same bottom end full stop.
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Post by skaterboy on Jun 19, 2010 22:24:26 GMT 1
Hi Gary
I am looking at building a 4L0 engine and would be intrested in fitting a 31K crank. I was just going to get a 4LO crank rebuilt to match a nice set of tuned barrels but would like to improve on the engine if possible. I wondering if this is something you have done and if so what sort of work is involved and who did it ?? .. Thanks Mark
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there's nothing wrong with welded cranks 
thats how mine twisted
They are all in the Haynes.