|
Post by casper171072 on May 25, 2019 14:49:27 GMT
I am just putting my engine back together following a full rebuild with some slight modifications, at the moment the head is not on but that will be re fitted soon once it comes back from Peter Burgess having had his Econotune modification.
The engine is out of the car and also has a piper 270 road cam now and also a small in dizzy electronic ignition system think its the Accuspark version which was working a treat before the engine was taken out.
I am wanting to set up the ignition timing to a level that will act as a good base to get the car running once the engine is in I am later hoping to get it on a rolling road to have the ignition and carbs propery set for the mods i have done. As part if this I have also replaced the timing chain cover with an MGB version which has the timing marks on the top now (as well as the later oil seal) so the timing mark on the pulley is no longer relevant (I will need to re mark the pulley as I havn't been able to get the correct MBG one, there are different sizes)
So can anyone assist in how I set up the timing statically , and re mark the pulley for future strobe timing. i have never done it this way before. Many thanks
|
|
|
Post by canuck on May 27, 2019 13:11:45 GMT
I am just putting my engine back together following a full rebuild with some slight modifications, at the moment the head is not on but that will be re fitted soon once it comes back from Peter Burgess having had his Econotune modification. The engine is out of the car and also has a piper 270 road cam now and also a small in dizzy electronic ignition system think its the Accuspark version which was working a treat before the engine was taken out. I am wanting to set up the ignition timing to a level that will act as a good base to get the car running once the engine is in I am later hoping to get it on a rolling road to have the ignition and carbs propery set for the mods i have done. As part if this I have also replaced the timing chain cover with an MGB version which has the timing marks on the top now (as well as the later oil seal) so the timing mark on the pulley is no longer relevant (I will need to re mark the pulley as I havn't been able to get the correct MBG one, there are different sizes) So can anyone assist in how I set up the timing statically , and re mark the pulley for future strobe timing. i have never done it this way before. Many thanks Mr. Casper, I did try to explain the pulley sizes to you both on this forum, (your earlier thread) and on the 'W' forum. I would strongly suggest you find/procure the correct damper pulley to match the cover you have. Helps keep things 'kosher' and may remove a variable. Peruse eBay, there is lots listed, and not particularly dear. Read below TB; there is a pulley available that incorporates both the early & late timing marks. www.moss-europe.co.uk/media/pdf/12H963_supplemental_information.pdfSet your camshaft timing per Mr. Piper, either with a vernier camshaft gear or the appropriate offset Woodruff keys. You are going to love these improvements! As to the timing set? I would ask advice with Mr. Burgess. With your cylinder head work and your new cam/valve timing and modern petrol, I will suggest the OE advance curve built into your distributor is totally unsuitable. (If distributor is worn, set the gap just a tad larger to accommodate the wear.) Martin @ Distributor Doctor will correct and match your existing distributor to suit and see you right. Maintain your Accuspark trigger if you want. Remember, the distributor is the brain of the engine. You know how one functions with a headache? However to have the engine running I would static time at 10° or 12° BTDC, and give it a go. This will be far from optimum and some road tuning to pinking then back off a degree or two should get you close. Back to you Bruce
|
|
|
Post by casper171072 on May 31, 2019 9:13:19 GMT
Thanks again Bruce I did read your initial advice about it before. The link you sent ties in with what I have been told before by the proprietor of MechSpec in Doncaster they are MG parts suppliers and breakers. There are about 3 different combinations of cover and pulley. The one I would ideally need is the smaller pulley which is for an early 3 bearing engine and is the same size as our original it also means the same standard fan belt size and no change of speed of the alternstor I think. Anything for these engines I am told is getting hard to find and getting costly. The cover I got has the five time marks but this interferes with the larger pulley so I'm back to needing to smaller pulley hense going back to the original which fits in with the new cover. I'm still on the lookout for a correct small MG pulley with the marks in the right place but don't want to hold up getting things back together. I'm a bit new to this it's the first B series I ve rebuilt so it could all go horribly wrong for a multitude of reasons 😂
|
|
|
Post by canuck on May 31, 2019 18:28:55 GMT
No worries. I did provide a link to the correct lower damper/pulley you need. If too dear £, eBay UK has a multitude of these pulley. Ensure you get the pulley for a chrome bumper B, 5 main engine and you will be good to go. the three main MGB engine pulley/damper will have the timing notch in teh wrong place for your cover. The pulley/damper I linked to in my previous post accommodates both covers and is the correct diameter. salut Bruce
|
|