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FIXED - starting a swapped motor (1725 Hillman)

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nomad Posted a lot Posts: 2,948	FIXED - starting a swapped motor (1725 Hillman)nomad @nomad
	Jul 15, 2012 2:22:04 GMT Select Post Deselect Post Link to Post Back to Top
	We haz progress on the Hunter - spare motor now fitted ;D The dead/dying 1725 came out easy, new one went in fine, then the fun started New one is an Ebay bargain (maybe...), "removed from a working car 3 weeks ago" I picked it up a few months ago but it only got swapped this weekend. I fitted the carb from the new one onto my old motor soon after I got it and that has been fine. Score so far on new motor : drained old oil (1/2 pint of thick goo with water in it ), new oil fitted. sparkplugs out, spun it on starter to build oil pressure. - no pressure so had to remove the oil filter to prime the oil system - now has pressure, but takes a while for oil light to go out Known good parts swapped onto new motor from the old one : snapped oil pressure switch dead fuelpump sparkplugs ( 3 standard + 1 motorbike size ) replaced distrib cap & plugs leads carb electronic ignition to replace corroded points that weren't working starter motor Results : It spins over ok, a few backfires, no attempts to start (ignition timing?) plugs feel dry but the carb & fuelpump are from my working motor I've fitted plenty of scrapyard motors in the past so I'm used to getting life into old doorstops, but this beastie is just not trying at all Any top tips ? ;D
	Last Edit: Jul 15, 2012 18:34:55 GMT by nomad Random picdump for your entertainment forum.retro-rides.org/thread/197691/womble-ing-improvising-photo-diary?page=8 Selling up - Italjet 50cc Minibike and more : retrorides.proboards.com/index.cgi?board=othrmod&action=display&thread=125072 Working without broadband - replies may take a while.

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bortaf Posted a lot Posts: 4,549	FIXED - starting a swapped motor (1725 Hillman)bortaf @bortaf
	Jul 15, 2012 3:01:32 GMT Select Post Deselect Post Link to Post Back to Top
	Possably the cam lobe for the pump? i'd try a wee sniff of easystart to find out if it's deffo the fuel but carb cleaner or petrol down the carb will do, if not check the timing? 1342 anti or clockwise or 1243 ect? check every plug for a constant spark, then go on to a compression test dry and wet and see where that gets you ?
	R.I.P photobucket

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djefk Part of things Posts: 844	FIXED - starting a swapped motor (1725 Hillman)djefk @djefk
	Jul 15, 2012 7:04:07 GMT Select Post Deselect Post Link to Post Back to Top
	Bortaf is correct with the EZ start and the ignition timing, however I would first go back a step and re-set the valve clearances, seeing as the previous owner was obviously "a bit special" when it came to performing simples maintenance tasks - you'll probably find there will either be no gap at all or you can use your thumb instead of a feeler gauge. Once done I would compression test it before doing anything else. I'm afraid if I was a gambling man (and William Hill accepted odds on such things) I would be betting against you, especially as what you've removed from the sump sounds like classic results of running an engine with HG failure, then letting it sit in a shed for 20 years.
	Last Edit: Jul 15, 2012 7:05:58 GMT by djefk BMW 2800 CS - the full story here: retrorides.proboards.com/index.cgi?board=readersrides&action=display&thread=72391

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barty Posted a lot Posts: 1,088	FIXED - starting a swapped motor (1725 Hillman)barty @barty
	Jul 15, 2012 11:00:28 GMT Select Post Deselect Post Link to Post Back to Top
	have you got the dizzy in the right way round, its easy to get it 180 deg out (done that many times myself lol) the last hunter engine i swapped i had to tow start it and after that it was ok. might be worth checking for head gasket failure ie sniff test etc


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nomad Posted a lot Posts: 2,948	FIXED - starting a swapped motor (1725 Hillman)nomad @nomad
	Jul 15, 2012 18:18:41 GMT Select Post Deselect Post Link to Post Back to Top
	We have a winner ;D It was a close contest but Bortaf gets 1st prize in today quiz Fuel = ok Ignition = fun Fuel pump from the old motor was feeding fuel into a jar ok, and I transferred the working carb from the old motor ... Plugs, leads, and dizzy cap were swapped from the old working motor, checked for spark ... 1 good, 3 dead My "known good" electric ignition isn't working Timing is so far out it's impossible to turn the distributor enough to time it up Eventually removed the distributor to fit the rotor arm 180* out, gives better adjustment but vac hose is too short to fit Then swapped plug leads around to get No1 firing somewhere near the marks End result is a sweet motor the fires up fist hit, sounds good, and pulls well ;D Too early to tell but it looks good so far ;D For a laugh - this is the full conents from the sump when I dropped the old oil, just enough to cover the bottom of a 2 liter bottle and a cupful of water on the drip tray Had a quick run around the local bypass and it feels good, will check everything over and fit the "spare" bolts I have left over, then we're hopefully good to go ;D Think I'll run it a little bit before checking compression, just so it can loosen up Thanks for all the suggestions
	Random picdump for your entertainment forum.retro-rides.org/thread/197691/womble-ing-improvising-photo-diary?page=8 Selling up - Italjet 50cc Minibike and more : retrorides.proboards.com/index.cgi?board=othrmod&action=display&thread=125072 Working without broadband - replies may take a while.

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