The Triumph Dolomite Club - Discussion Forum

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 Post subject: OD to Gbox Bolts
PostPosted: Sat Jun 16, 2018 11:30 am 
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Location: Winscombe, North Somerset, England
I'm reassembling a Sprint OD unit onto the gearbox. Should there be copper washers or similar on the bolts (set screws)? as obviously the threaded holes go straight in to the gearbox. It was a few years ago when I dismantled these and I couldn't find the bolts that came out.

Once that's done I have a reconditioned Sprint gearbox & OD. Probably for sale soon.

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1997 TVR Chimaera 450


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 Post subject: Re: OD to Gbox Bolts
PostPosted: Sat Jun 16, 2018 11:47 am 
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I cant see any on the Triumph manual on the eight bolts?

Tony.

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 Post subject: Re: OD to Gbox Bolts
PostPosted: Sat Jun 16, 2018 9:19 pm 
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I would seal every bolt Mart. If not washers a thread sealer loctite or similar. They do tend to leak from these bolts.

Tony

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 Post subject: Re: OD to Gbox Bolts
PostPosted: Sat Jun 16, 2018 10:32 pm 
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I've been looking at my Sprint parts catalogues and 6 of the studs are NKC56 and 2 are NCK57. The washers are NKC70 and the nuts are NKC69. The gasket is 159369.

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Meetings take place on the first Wednesday of the month at 8.00pm at The Old Brickworks, Wakefield Road, Drighlington, Bradford, BD11 1EA

1972 Dolomite 1850 auto (NYE 751L - Now for sale)
2003 Volvo XC90 D5 SE (PX53 OVZ - The daily driver)
2009 Mercedes-Benz W204 C200 CDI Sport (BJ58 NCV - The 2nd car)
1991 Toyota Celica GT (J481 ONB - another project car)
Former stable of SAY 414M (1974 Toledo), GRH 244D (1966 1300fwd), CDB 324L (1973 1500fwd), GGN 573J (1971 1500fwd), DCP 625S (1977 Dolomite 1300) & LCG 367N (1975 Dolomite Sprint) plus 5 Acclaims and that's just the Triumphs!

Check my blog at http://triumphtoledo.blogspot.com
My YouTube Channel with a bit of Dolomite content.

"There is only one way to avoid criticsm: Do nothing, say nothing and BE nothing." Aristotle


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 Post subject: Re: OD to Gbox Bolts
PostPosted: Sun Jun 17, 2018 12:10 am 
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Location: Winscombe, North Somerset, England
Thanks guys. There are only six bolts though. It's not the 8 bolts that hold the adaptor to the OD.

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Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


1997 TVR Chimaera 450


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 Post subject: Re: OD to Gbox Bolts
PostPosted: Sun Jun 17, 2018 3:23 pm 
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Interesting. I can see what you mean about fitting copper washers. The set-screws go into the oil of the gearbox casing. I reckon the Sprint Gearbox designer was not the same guy that did the 1850 casing as the 1850 bell-housing to gearbox casing lower bolt sees the gearbox oil and is fitted with a 500464 copper washer.
B.L. penny pinching again ?
Tony.


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 Post subject: Re: OD to Gbox Bolts
PostPosted: Sun Jun 24, 2018 12:06 am 
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Location: Highley, Shropshire
As I said when we met last weekend, I don't think (and research has confirmed) the factory put copper washers on these bolts, but experience has taught me that it's a good idea, at least on the lowest pair, as oil can creep down the threads, by-pass the gasket and get round the split in the spring washer normally fitted, to arrive finally on your nice, clean (!!!!!) garage floor! A couple of 3p copper washers stops this from ever happening! A no brainer, really!

Steve

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'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
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