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 553 Posts Member #: 1356 Post Whore TRURO, CORNWALL |
17th Jan, 2011 at 11:53:24pm
Here's my gearbox which I built about 4 years ago. It's just had its 6 monthly spray of WD40 and I remembered the cracks/ casting marks. At the time I was told the cracks/marks were nothing to worry about, but not so sure now. Any thoughts on whether it would be a problem or not to use it.
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 9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
17th Jan, 2011 at 11:58:42pm
nothing to worry about imo, i cleaned up the casting lines inside my box and gave various spots bit of a polish, it does look like someone has had a ham fisted go at yours though Yes i moved to the darkside |
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 1596 Posts Member #: 8027 Post Whore Thrapston, Kettering, Northants NN14 |
18th Jan, 2011 at 12:02:20am
looks like a hampster has been chewing at it. i think to find out you wanna grind it off a bit smoother so you can see whats actually going on. i think it all dpends whether it is a crack or a casting problem, if it is just the casting a good smoothing should cure it if it isnt too deep, if not its not hard to transfer into another case. On 17th Feb, 2011 apbellamy said:
I popped my first one out the other day... |
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
18th Jan, 2011 at 12:28:31am
thats just where the cores are pieced together like a jigsaw puzzel and shows in the final casting. some are better than others, but those marks that you are concerned about are normal. On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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 2233 Posts Member #: 9037 Post Whore Doncaster, yorkshire |
18th Jan, 2011 at 07:34:10am
Nothing to worry about, I work for a steel foundary as a NDT inspector, which are fancy ways of checking castings for cracks, I can tell you there's nothing to worry about, cracks are usually defined by very sharp, crisp clean marks, they are too big, curvy and faded if you understand. Edited by bennyy on 18th Jan, 2011. Audi s4 b5 - 470bhp & 486ft lbs
On 15th Mar, 2012 wil_h said:
Yes, Carl says he gets requests for rimming all the time On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble  |
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553 Posts Member #: 1356 Post Whore TRURO, CORNWALL |
18th Jan, 2011 at 08:18:13am
Good news then, thanks |
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 478 Posts Member #: 1962 Senior Member Lancaster |
18th Jan, 2011 at 11:30:01am
I've just had the same discussion with Guessworks about my gearbox as I was concerned whether they could cause stress fractures, he suggested they were normal too |
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 6549 Posts Member #: 1149 #1 Basshunter Fan Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes! |
18th Jan, 2011 at 12:01:00pm
As above, only thats ever caused an issue is the one above the 3rd bolt hole (pinion support) i think. Which was removed later in the minis life. Edited by MikeRace on 18th Jan, 2011. 1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.
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