Jonathan Joyce Posted May 24 Share Posted May 24 Nice, is it NOS BL/Stanpart or Kent/Piper? It's something I've recently been thinking about for my 12/50, but seems a bit of a minefield. My engine no starts GD620XXHE and is mid 1965 build. I think the 12/50 as standard has the same cam timing as the Mk1 and early mk2 Spitfire being 18 58 58 18, but runs in block so cam has appropriately sized bearing journals. The later mk2/mk3 spit cam is timed 25 65 65 25, and that would be the one to have, but I am guessing that one only comes remanufactured with smaller journals and would need me to fit bearing shells into the block ? Is that what you have found? Regards Jon Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted May 24 Author Share Posted May 24 (edited) Hi Jon I’m not that up on technology of cams, I’m getting the engine rebuilt by the reconditioner my engine is GD 59697HE , I do know the 12/50 has a spitfire mk1/mj2 camshaft I was lucky to find this one on auction on eBay and won it, it’s a new old stock made by Newman camshafts. I believe it’s a good quality one, it’s certainly better than the one that came out lol, I’ll find out about bearings etc when it’s rebuilt . And update when I get it back 😊 Edited May 24 by Wendy Dawes Quote Link to comment Share on other sites More sharing options...
yorkshire_spam Posted May 24 Share Posted May 24 Newman make excellent camshafts. (In my opinion) 1 Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted June 19 Author Share Posted June 19 Mabel’s engine has been delivered for machining, found to have a 20 thou lip at the top of the bore so will need to go out to + 40 thou. Crank is thankfuly good and may just need polishing out, her new spitfire camshaft will be installed together with new followers. the head will be ported and polished and have hardened seals, and a full refurb Her twin HS2 carbs will be fitted and the engine run on a dyno before it comes home to be re fitted , she may have a few more horses when finished than when she was new 🐎🐎 5 Quote Link to comment Share on other sites More sharing options...
65redspit Posted June 19 Share Posted June 19 On 20/05/2024 at 15:41, Wendy Dawes said: Arrived today shiny new spitfire camshaft, engine being packed up ready to go for machining late next week, the expense goes on 😳 Nice 👍🏻 1 Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted July 2 Author Share Posted July 2 Mabel’s engine is now machined and awaiting new shells before reassembly bored out +40 crank -10 head ported and skimmed, unleaded seals 7 Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted July 10 Author Share Posted July 10 (edited) Mabel’s engine has now been rebuilt and was due a first run on the dyno with her twin carbs, but as usual she threw up an issue or should I say an issue occurred, the Stanpart exhaust manifold I sourced turns out to be warped. So looks like her good old solex single going back on for now 🙄🤷🏻♀️ the photo shows the warp against the engineers rule is quite substantial, now to get a refund from the seller - wish me luck on that one 🙏 Edited July 10 by Wendy Dawes Quote Link to comment Share on other sites More sharing options...
Amy Wade Posted July 10 Share Posted July 10 (edited) I've got this if it's any use, it's not warped however it's had broken studs drilled out. It's off a Mk3 Spitfire. Edited July 10 by Amy Wade Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted July 11 Author Share Posted July 11 Thanks for the offer Amy, but it’s from a 1300 and mines an 1147 mk1 or 2 so unfortunately it won’t fit but I am so grateful for the offer x 1 Quote Link to comment Share on other sites More sharing options...
Clive Posted July 12 Share Posted July 12 On 10/07/2024 at 21:39, Wendy Dawes said: Mabel’s engine has now been rebuilt and was due a first run on the dyno with her twin carbs, but as usual she threw up an issue or should I say an issue occurred, the Stanpart exhaust manifold I sourced turns out to be warped. So looks like her good old solex single going back on for now 🙄🤷🏻♀️ the photo shows the warp against the engineers rule is quite substantial, now to get a refund from the seller - wish me luck on that one 🙏 Why not saw your existing manifold, chopping the inlet part off? That seems to have been the "usual" solution when fitting twin carbs to a 1200 herald. And the manifolds are much easier to source than the spitfire type. Or get the manifold machined flat? 1 Quote Link to comment Share on other sites More sharing options...
Shepsy Posted July 12 Share Posted July 12 Have you considered having the warped manifold skimmed? Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted July 13 Author Share Posted July 13 I am waiting to hear from the engineer to see if it can be saved. Single carb back on now just to get it running 1 Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted July 19 Author Share Posted July 19 (edited) Mabel’s engine has been rebuilt and has been run on the dyno she’s showing oil pressure of 70psi 😁 , she’s on her original solex carb at present but I have found a 4 branch free flow manifold which Darren and I will fit with the HS2 carbs soon. Just got to pick up the engine after the border raiders and pop it back in then hopefully SHE LIVES 🙏 Edited July 31 by Wendy Dawes 3 Quote Link to comment Share on other sites More sharing options...
Rubce Posted July 20 Share Posted July 20 Excellent news 👏 1 Quote Link to comment Share on other sites More sharing options...
Amy Wade Posted July 20 Share Posted July 20 That's awesome news, I bet you can't wait to get back behind the wheel. 1 Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted July 20 Author Share Posted July 20 No it will be good to drive her again xx can’t wait to get the engine in ♥️ 1 Quote Link to comment Share on other sites More sharing options...
65redspit Posted July 20 Share Posted July 20 Fantastic - what a milestone!!! we'll done you !! 1 Quote Link to comment Share on other sites More sharing options...
65redspit Posted July 20 Share Posted July 20 (Well done) 1 Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted July 21 Author Share Posted July 21 Don’t know the cost yet aaaargh !!! Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted July 21 Author Share Posted July 21 10 hours ago, 65redspit said: (Well done) Did you get yours sorted out after the camping weekend 🙏 Quote Link to comment Share on other sites More sharing options...
65redspit Posted July 21 Share Posted July 21 Not yet ! I've ordered a 123 ignition system, got new plugs and coil in ready and waiting for it arrive (but of course they are out of stock).... Quote Link to comment Share on other sites More sharing options...
65redspit Posted July 21 Share Posted July 21 I'm sure it will be worth the cost 💪 Quote Link to comment Share on other sites More sharing options...
65redspit Posted July 21 Share Posted July 21 (The cost of your engine Wendy) 1 Quote Link to comment Share on other sites More sharing options...
65redspit Posted July 21 Share Posted July 21 (I can't get the quote function to work today!!) Quote Link to comment Share on other sites More sharing options...
Wendy Dawes Posted July 21 Author Share Posted July 21 (edited) 2 hours ago, 65redspit said: Not yet ! I've ordered a 123 ignition system, got new plugs and coil in ready and waiting for it arrive (but of course they are out of stock).... 🙄 typical - I understand that the 123 has a capacitor actually in the rotor arm and these can fail so you get a weak/random spark. Darren’s failed on Olaf and Dale told him about the capacitor new one fitted and all good again The same one is fitted to the Porsche 911 👍 Edited July 21 by Wendy Dawes Quote Link to comment Share on other sites More sharing options...
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