http://cgi.ebay.com/ebaymotors/MG-1968-MGC-GT-Roadster-Silver-Good-Condition-1-of-1500_W0QQitemZ250771698726QQihZ015QQcategoryZ6314QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Mark Darley
markdarley@mac.com
415 381 5452
On Feb 17, 2011, at 7:12 PM, Greg Tatarian wrote:
> On 2/17/2011 6:03 PM, craig murphy wrote:
>> Usually they would mill the flat surface of the caps, mount them up
>> and bore into them with the cutting tool just touching the bottom
>> of the block
>> saddle, but not removing any material from the block side.
> As you may know, that is often not possible, particularly if the
> block saddles are not true. In that case, or when repositioning the
> crank higher in the block will have a very detrimental effect, the
> block saddle and main cap are bored oversize, such as 0.015". This
> necessitates the use of bearings that are oversize on the OD, and if
> the crank is ground, undersize on the ID. The block in our Elan S4
> was bored like this, because I swapped the round-shouldered caps
> with square caps from another block; honing would not have been
> sufficient to make them align properly. I made that swap to gain
> lower end strength and with the other mods to the engine, permit
> higher revs.
>> I bought a good used former Minimania-built 4 synchro remote
>> change box
>> and did some modifications to be able to make it the same ratios
>> (using the
>> same replacement gears) as the original S box.
> Other than the change from originality, would you consider this a
> desirable upgrade? I like having synchros in first, but one does
> learn to get around that in a 3 synchro box...
>> I thought it would be risky to be this far into it and then
>> put it back together without going the rest of the way. This way I
>> will have
>> a base line where I know it was rebuilt by me fresh on x/xx/xx date.
> Oh yes, that is always more comforting than guessing what may fail.
> And it can be really amazing what you find when you open up a motor
> or 'box that even a supposedly reputable rebuilder has worked on.
>> The rest of my gearbox parts just landed in the US from England and
>> the big
>> brown truck should deliver those on Monday.
> The gearbox parts for our Alfa (only about 2/3 of what it needed)
> cost over $800 - gearbox parts can get expensive very fast. But what
> a great feeling it is when you've replaced all the wear items in a
> 'box and it shifts like butter.
>
> Good luck with the rebuild. Wanna hold a tech session on
> reassembling your motor?
>
> Cheers,
> Greg
>
>
>> Cheers,
>>
>> Craig
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