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Tech Talk Forum for Norton, BSA, Triumph. All Vintage British Motorcycles circa 1900-1977. 30,000 members online since 1997
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Location:  Top Norton Tech Talk Engine & Tranny

Topics in this discussion: Sorted by last modified date   Discussion topic Author Last updated/author Replies Views Rating early head no over head oilers   hello one an all, my first time here,hope to get some answers to my problem. atlas head no holes for over-head oiler tubes, how did they ,the early o Mr. Muck 1 Sat Sep-04-10 09:41 PM 0 20 --- Looking for a good belt drive  I have a 74 / 850 commando and have searched a few sites looking for the best primary belt drive conversion kit, there are quite a few distributers an norpunk Sat Sep-04-10 09:26 PM by Mr. Muck 1 3 82 --- 750 Atlas Alternator Rotor Nut size  The threaded end of the crankshaft on the Alternator side of my Atlas was damaged by the previous owner. He threaded on the incorrect nut and seriousl eblountjr Sat Aug-28-10 05:01 PM by dynodave 3 90 --- new to brit bikes  howdy all- i have been cleaning cars and doing odd jobs for a local doctor, and he has an old norton he wants to get running. i believe he said it misterbobb Fri Aug-20-10 03:14 PM 0 49 --- firing on one side  Have checked plug wire, coil and still no fire on one side??? alanash Sat Jul-24-10 08:34 AM by alanash 4 165 --- what tools for cylinder head removal  I was looking to buy some tools for my Norton and I am finding several types of British standard, BSW BSF Does anyone know the sizes needed for head ncw750 Fri Jul-23-10 06:38 PM by waynelk 4 191 --- AMC Gearbox Oil Leak  I have a Noriel (Sq4 in a wideline featherbed frame) with an AMC gearbox. The gearbox oil seems to be leaking in the vicinity of the sprocket. I have c165scarab Sun Jun-20-10 02:49 AM 0 148 --- norton 1972  I am trying to get my old bike going. Do i have to change valves out to run unleaded? Someone told me it already has the right valve seats. Is this ri w.premo Fri Apr-16-10 10:09 AM by dynodave 4 259 --- Primary drive chain  I building a '49 Norton Model 7 with an Atlas 750cc engine. Someone has recommended that to eliminate oil dripping from the primary chain case, I shou royd1 Mon Mar-08-10 12:33 PM by dynodave 1 319 --- OIL circulation, oil change, and other questions about the oil.  First off, allow me to introduce myself. I am, beyond doubt, the 'newest' of the 'newbies' to ever hit this site. No strong bike background, with *NO* Bull Fri Dec-25-09 08:26 PM by NortonGuy 9 539 --- New piston ring installation  I have a new set of rings for my 850 Norton. The compression rings have a bevel on the inside, Does the bevel go up on both compression rings ?? cdnradio Fri Dec-18-09 04:45 AM by Atlasman 1 782 --- greasing the primary chain? / push rod travel  Hi Guys First a big thank you for all the info and enlightment I found here! For many years I own, drive and fix the most on my 1970 Commando Fastb biky Fri Dec-18-09 04:33 AM by Atlasman 4 914 --- Dommi Crankshaft bolts and studs  Hi I am rebuilding a 1953 Dommi and have had the crank reground and the rods reworked to return them to spec on the big ends. I have disassembled th 47Mdl18 Fri Dec-18-09 04:18 AM by Atlasman 2 276 --- AMC Gear Box  Hello Everyone, This is my first post. I'm restoring a 1950 Dominator. I have an AMC type gear box I want to sell. I found a laydown type gear box. 1943MB Fri Dec-18-09 03:55 AM by Atlasman 1 732 --- Cylinder barrels for Dominator 99  Hi guys, I'm desperately looking for Dominator 99 (600cc) cylinder barrels and pushrod to convert my 88 Dommie (1960 - Alternator type) into a 600c Laurent Thu Nov-19-09 05:47 AM 0 352 --- camshaft  I acquired a Norton camshaft that is stamped T2210, or 2219, or 2213. I can find no listing or reference to this camshaft number. Depending what it eblountjr Sun Oct-18-09 09:06 AM by dynodave 3 520 --- Breather valves solve oil leaks?  Hello everybody. I've come across an INOA article of a few years ago that talks of a brake booster valve being used in the breather line of a Comma Ian Wilson Sun Sep-06-09 09:45 AM by seaguy 7 5322 --- Overhaul of 16H norton 1924  1924 16H model 2 500 side valve Hi all, Can anyone tell me if there is a special tool / extractor for removing the crankshaft gear the drives the ca crispyduck Fri Aug-21-09 06:49 AM by Bailey 1 464 --- exhaust insert tooling  Hey Guys, anyone know of a supplier of the "helicoil" tools used on the norton exhast threads? Cheers kerbside Sun Apr-19-09 03:42 AM by Triton 3 1032 --- 850 Norton Headbolts  Hi kids, Ihave aslight headgasket leak at the front on my 850 after 5000 miles. Should I retorque or replace? To retorque should bolts be loosend one jerry Sun Apr-12-09 07:03 AM 0 513 --- Compression  Can anyone tell me if 140lbs (left side)/150lbs (right side) is out of the normal relm for a MK III. I keep fouling the left side plug. I have a sin calbigbird Tue Jan-20-09 09:26 AM by dynodave 1 859 --- Tranny leak  I have a 1975 Commando MK III. I seem to have a leak at the front of the transmission. I think it is coming from a large acorn nut reachable from th calbigbird Fri Jan-09-09 11:12 AM by Road Scholar 2 693 --- Need to identify parts  Hello All, I recently acquired some parts and would like to know what I have here. I was told the parts were from a Norton, but that's all I know. spisland Sun Dec-21-08 04:22 PM by johnandnz 5 833 --- Compression Check on a 1975 850  What is the expected compression reading on a 75 Norton 850 with stock everything? The motor has 12,000 easy miles on it and has never been apart. I dwlarsen Sun Nov-23-08 06:23 PM by dynodave 1 759 --- quiafe id  hi i'm new to this forum,i have a five speed norton box which was in a dommy parade bike,how can a quiafe box be identified and has anyone ever conv andyt Sun Oct-05-08 04:15 PM 0 812 ---