right got everything back togther and theres a missfire, had a compression test- 1,3,4, were in the 40s psi, the rest in the 170s, they suspected some sort of piston/rings issue was mates gut feeling
so its currently at his garage- the heads been removed, no visible cracks or anything, the block is still in the car, the valve seats and stem oil seals need doing , hes still not sure about the pistons- on one of them there was some damage/pitting on the top and on that bit on the head, he said looks like an old would where years ago the top of a spark plug or something like that had broke off in there, and a bit of a score in 1
hes basicly saying -what do i want to do ? im at about £150 right now
at 1st- he said- new valve stem oil seals, re set the valves, get the head cleaned up pressure tested,skimmed if need be, and a new head gasket- put it back on all reconditioned- test the compression and see what it says, if all good put it back together and away you go, but if its not....., and to get to that is about £6-700 after pricing it all up, a lot more than initialy thought ,as the vavle seals and stuff are a lot more than hed guessed, at 1st he said could maybe be 3-400 to get to that, worth the gamble and at worst you loose a head gasket and a bit of labour but have a reconditioned head, but he said personaly at 6-700 its not worth the gamble but its my choice
he said one thing that indicated- was there wasnt really any difference between the valve seats from the low compression ones, to the others, and showed me them
he said when you start taking out the block and getting in to new pistons and rings ,bores,etc etc it starts running away and all the labour involved youl be at a few grand before you know it
but they dont seem too sure on exactly the problem
another option- new engine ,i can either source a new engine, or there is another whole car i can buy, an 86 325i 2 door switchable auto cirrus blue,83k genuine milage ive had a good look through the history, a 1 owner car every mot from new and service book etc, even genuine bmw stamps from 2009,often only doing 3-4k a year between mots, the car is running and driving, generlly a nice reasonable 325, had some welding on the rear arches but panels are nice enough etc, its got air con all working, abs, the car is mot ready, i can buy it tax it and drive it around, or drive it around now the engine is good
bmw have confirmed from both numbers its engine is the same as mine made from the same cast in the same batch at same time, even confirming the dates they were fitted at factory just a few months apart, so i can buy that car, get the engine put in mine, using the nice bits from mine , get my engine to my garage and then work out what to do with it- re build it as a long term project or something, then sell the rest of that car as a rolling shell or break it, or source another engine, although i do know that ones good and proven good, including the purchase of the car, and all the work done and mine driven out with an 83k engine, mot and all new fluids etc £1300-1500 , and ive got the rest of that car sat there to break or sell whole, and my original engine to re build or whatever
or source another engine ???, take a gamble on it if not proven,then get it here, then in etc etc
or do i get mine done, or any other options or things to test on the block as it is to get to the bottom of it
so im really at a bit of a ?? as to what to do, would appriciate any advice on this its giving me a f**king head ache
