Monstrous Posted September 12, 2007 Share Posted September 12, 2007 the MGB has a B series engine, no? in essence a larger version of the A series in a mini, so head gaskets are pretty easy to change tbh rocker cover off, rockers off, thermostat housing off, disconnect bypass hose (i think b series engines have one), undo manifolds and then undo the head nuts then flush the water system through and re-new, and new oil, clean off any poo bewteen the cylinders too by the time i've tgyped this, you could of probably done it Quote Link to comment Share on other sites More sharing options...
Danny-B- Posted September 12, 2007 Share Posted September 12, 2007 Just had a quick look at this thread, will read it all later but its funny because my parents just bought an MGB Roadster (Soft top) ! I like the bucket seats ! gonna have to get them to do that good luck with the engine, i hoope the clyender head hasnt got a crack in it as it might end up costing a fair bit then. P.S. yer spose to skim the head when changing the head gasket arnt ya ? Quote Link to comment Share on other sites More sharing options...
Monstrous Posted September 12, 2007 Share Posted September 12, 2007 P.S. yer spose to skim the head when changing the head gasket arnt ya ? isn't necessary, only if you're loosing compression just ensure it's completely clean with no carbon blown between pistons, as the gasket won't seat properly otherwise just make sure it's the right way up Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted September 12, 2007 Author Share Posted September 12, 2007 (edited) isn't necessary, only if you're loosing compression I am loosing compression on 1 cylinder, but iv been told as its a cast iron (or steel?) head then it should be ok., il check its flatness anyway just to be safe. You make taking the head off sound easy Monsterous Iv been told to set aside a day for it lol . Edited September 12, 2007 by Hpi_matrix_stock Quote Link to comment Share on other sites More sharing options...
Monstrous Posted September 12, 2007 Share Posted September 12, 2007 You make taking the head off sound easy Monsterous Iv been told to set aside a day for it lol . Don't take my word for it, im just going by doing an A series, and im guessing a B series must be about the same, as they are the same configuration, just bigger capacity wise while the head's off, why not take it to an engineering shop, and have them port and polish it, and resize the valves? would make a considerable difference Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted September 12, 2007 Author Share Posted September 12, 2007 (edited) while the head's off, why not take it to an engineering shop, and have them port and polish it, and resize the valves? would make a considerable difference Thats in my mind although it will cost me about £200-£300 to take it to stage 2, and as I said up the page "Iv ordered a new headgasket, but I may be getting something better to fix this problem (watch this space )" Edited September 12, 2007 by Hpi_matrix_stock Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted September 12, 2007 Author Share Posted September 12, 2007 (edited) Just thought id mention I fixed the sticky break piston (a problem found a few months ago lol but fixed a month or so back) by pushing it in and out quite a few times and spraying it with WD-40, its worth trying to free stuff up before just totally replacing it sometimes Edited September 12, 2007 by Hpi_matrix_stock Quote Link to comment Share on other sites More sharing options...
reefshark Posted September 13, 2007 Share Posted September 13, 2007 Thats in my mind although it will cost me about £200-£300 to take it to stage 2, and as I said up the page "Iv ordered a new headgasket, but I may be getting something better to fix this problem (watch this space )" what could that be an engine transplant maybe Quote Link to comment Share on other sites More sharing options...
wiggles Posted September 13, 2007 Share Posted September 13, 2007 thats what methinks. Quote Link to comment Share on other sites More sharing options...
antnee Posted September 13, 2007 Share Posted September 13, 2007 3l V6 lol Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted September 14, 2007 Author Share Posted September 14, 2007 (edited) 3l V6 lol I wish lol, unfortunatly something a little more tame. 1950cc, Stage 2 head (not unleaded though, will cost about £140 to make unleaded) and a lightened flywheel. Should achieve 113hp at the wheels, something like 130-140hp at the flywheel. Its done 30,000 miles and the guy wants £525 The cylinders seem to have slight pitting though...is that normal? And is the price OK? Edited September 14, 2007 by Hpi_matrix_stock Quote Link to comment Share on other sites More sharing options...
wiggles Posted September 15, 2007 Share Posted September 15, 2007 dont know much about engines, but surely the conversion will be worth it ? £140 dosent even get you much petrol these days. Just makes it easier anyway. Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted September 15, 2007 Author Share Posted September 15, 2007 (edited) dont know much about engines, but surely the conversion will be worth it ? £140 dosent even get you much petrol these days. Just makes it easier anyway. It's quite expensive tbh, 30,000 miles, no oil burning etc is what im taking the guys word for. I also don't have a extensive knowledge of engines, the rebuilding of them and what gets changed and by how much. Iv rung up a few company's this morning though and it will easily cost £800+ to get my engine to around the same standard, probably more. Il probably go with it as being 18 it's the cheapest option iv got, and iv never seen a tuned engine sell on ebay. Its been painted which is always a good sign I started taking the head off my current engine today as before I fit the new engine il have it converted to unleaded and get a new AP clutch. YUK! These do not look right, looks like il be buying an SU carb manual Edited September 15, 2007 by Hpi_matrix_stock Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted September 16, 2007 Author Share Posted September 16, 2007 Well dispite 95% of people I asked (on forums) being against this motor (probably because of supposed pitting) iv gone ahead and bought it anyway. The cylinders were clean (not pitted) it was just the camera picking up the dirt/oil in the cylinder. Im now -£525 need to get new valve seats on the head, a clutch and possibly some K&N's. On the plus side I have 113bhp sitting in the garage Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted September 20, 2007 Author Share Posted September 20, 2007 (edited) Dyno pront out from when the engine was last in a car, only difference is it had electronic ignition and a different distributer with that car. Edited September 20, 2007 by Hpi_matrix_stock Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted October 29, 2007 Author Share Posted October 29, 2007 (edited) Thought id update this even though I havent really done much Had to replace the engines front plate because iv got different engine mountings Valves and spring removed from the head, hopefully going to the machine shop later in the week to have the head coverted to unleaded Buying an engine crane actually works out cheaper then hiring one Comes from china but is the same as the more expensive names, I need to sell it once iv used it so any one wanna buy an engine crane Also bought myself a decent tool box as im starting to build up quite a few tools of my own Just ordered bronze vavle guides, new springs and various other little things. I should be able to fit the clutch once the parts come and then the engine will be ready to go in to the car once the engine bays been painted. Edited October 29, 2007 by Hpi_matrix_stock Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted November 4, 2007 Author Share Posted November 4, 2007 Engines out, ratchet spanners were a godsend. Quote Link to comment Share on other sites More sharing options...
R46 Posted November 5, 2007 Share Posted November 5, 2007 top man!! project coming on nicely! u have electric fuel pump for twin su's? new year sometime hopefully relightin ol flame 1275gt clubman but gonna be turbo or bike engine conversion.. Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted November 5, 2007 Author Share Posted November 5, 2007 Yeh an electric SU pump comes as standard, I want to switch over to a single weber though Quote Link to comment Share on other sites More sharing options...
Jon_85 Posted November 5, 2007 Share Posted November 5, 2007 Nice, my dads got a MG C, and 3 MGB gt's, one of the mgb's is almost fully restored, black with red leather interior, looks stunning, almost looks brand new. the MG C needs minor restoration. Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted November 23, 2007 Author Share Posted November 23, 2007 (edited) Little update. Steering rack had to come off to replace engine mountings and one bolt was a real pain in the backside (had to weld another a nut onto it and swear alot). Cylinder head has been to the machine shop and I now have bronze vavle guides and 3 angle hardened seats, one valve was found to have a crack in it but thats easy and cheap to replace (and luckily the machine shop had one) Just need to send the dizzy off to Aldon to get it re-curved, hopefully the engine will go in Sunday (wheather permitting) Edited November 23, 2007 by Hpi_matrix_stock Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted November 24, 2007 Author Share Posted November 24, 2007 Cylinder head fresh from the machine shop: Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted December 10, 2007 Author Share Posted December 10, 2007 (edited) Lost the valve spring retainers and was sick so havent got round to doing much untill recently. The engine is all in one peice now ready to be fitted and the distrubuter has gone to Aldon for a rebuild. Everythings in place, just need to fit it all together, hopefully going to get it done this side of the year . Have also purchased an aluminium bonnet which is soooo light, gonna be a few pennys to paint though Edited December 10, 2007 by Hpi_matrix_stock Quote Link to comment Share on other sites More sharing options...
Hpi_matrix_stock Posted December 14, 2007 Author Share Posted December 14, 2007 Damaged the clutch splines trying to put the engine in so I have to file them back down and try again Bought some plastic bits to put on after I take off the bumpers Quote Link to comment Share on other sites More sharing options...
Anthoop Posted December 14, 2007 Share Posted December 14, 2007 Hmm...don't want to teach you how to suck eggs here...but- I take it you aligned the clutch plate?Also it may be easier to remove the box from the mountings and insert it in one...or alternatively...get the engine in and then mount the box on after? Just my thoughts! Quote Link to comment Share on other sites More sharing options...
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