325_driver

Compression test result's as follows C1: 160psi C2: 170psi C3: 166psi C4: 138psi - hinting maybe some worn valve's it will get near 160psi 3 more cranks later C5: 130psi - hinting maybe some worn valve's it will get near 160psi 3 more cranks later C6: 150psi Could incorrect tappet clearances on C4, C5 cause that low PSI ? Does any one know what the minimum compression in a m20 cylinder is for recommended detonation, i thought it was only 80 - 110psi cold or some thing. With these results would you expect a car not to start? Im going to recheck the clearances again, the spark plugs seem a little wet. Do you think that the spark plugs could be playing a major factor in it not starting Thanks

Thanks glenn, um i am pretty certain there is oil pressure, might be just hard to see on camera, but there is plenty of oil circulating. I did the clearances at TDC or close enough, very hard to do when i cant take a spark plug out to measure position of cylinder, so it is possible that there was room for error, so gathering from michael's comment, i should be checking the clearances with the cam lobes facing down into the head ? which i may not have done, (i just used my knowledge of where a cam lobe should be in relation to just before tdc) which after this circus event might be incorrect. Then again its hard to measure any thing with out ruling out other problems such as timing, and idle mixture related things, as there was a long list of annoying problems before i took it apart. Any thanks to all for the insight on this, it doesnt go un appreciated, hoping to get to the bottom of this, for future reference

Ok, maybe im not covering my basics here, but carefully did the clearances, and now it wont fire, just before i start assuming the worst, im going to ask : is it possible that i some how could have muffed up the tappet clearances, causing the car not to start. It splutters, it almost sounds like the timing is way out on the dizzy, but that was all fine before i touched it. I wont know for sure until i get a compression tester

feeler gauges arrived, and some interesting findings. most clearances are approx 0.152mm (0.006)" or less, since .152 is the smallest size i have, how on earth does this happen ? no one has touched the tappets, did an eccentric possibly crap its self ? Would this be enough to cause horrible tapping

might be keen on the engine, by unsure on km's you suspect probably high 200's ?

keen on the engine, dont know when im coming up,

Chance that a cam lobe has shat its self and it now wacking against a rocker arm ? how often does that happen

Video number 3, rocker arm movement, does this look excessive ? checking tappet clearances when brother brings homes feeler gauges, this thread might come in handy one day for some one else with a similar problem

video number 2, closer look inside rocker cover

Rocker cover is off, what exactly am i looking for, i cant check tappets correctly untill i find the feeler guages, but im assuming a broken rocker should stick out like a sore thumb ? are the rockers supposed to move freely ? is there another thread i can refer to?

That exactly what i was thinking, it is SHOCKINGly loud, so loud i thought WOW maybe big ends ! but its coming from under the top end. Is it common, or has any one heard of the tappet clearance / adjusters coming loose ? Will be looking into it today

I got it in a clutch kit from auto clutch, when i bought it it costed like 220 all up for a m20b25 clutch kit, release bearing was approx 30 - 40 bux prices might be different now

My thoughts Worst case senario Big end bearings ive had big end bearing problems before and their much more of a knocking "dock dock dock" noise, this nearly sounds like a dead lifter, or maybe like theres no oil pressure ? Do oil pumps fail often ? Video any insight would be awsome !! before i start ripping the damn motor out edit: "like a dead lifter" correction, it reminds me of when i adjusted the tappets accidentially to the wrong measurements, and it made a similar noise

I am very aware of the m20's noisy lifters, but a m20b23 engine is making a very distinct knocking noise, it sounds similar to a big end, but ive had my fair share of big end problems and it doesnt quite sound like it. I have accidentally (on another car) adjusted the valve clearances to the wrong measurements and when it started it made similar horrible knocking noises, so i was wondering, what would be a good way to confirm whether its top end or bottom end? Where should I attach a stethoscope, i couldn't seem to get a clear sound when attaching it to multiple locations on the rocker cover, i have to remove the sump pan tomorrow to attach it to the sump. Any tips or advice ? Has any one else had a dead lifter before ? Should i be placing the stethoscope to the block to get a more accurate sound ? Jonathan

I thinnk the term in NZ can finally merge from "Service station" to "Gas Station", as service has now reached an all time low nation wide (With the few exceptions)

Always recommended to ensure the conrod bolts are replaced, they stretch, so could loose their effectiveness to torque second time. I had to put my conrod in the vice, and wack them out with a mallet, carefully ofcourse.

Paper clips work quite well too !

Bump, any interest? May be able negotiate price

http://www.trademe.co.nz/Trade-Me-Motors/C...n-283931770.htm

Has anyone gained horse power from this ? If the bimmersport sicker is + 20hp, this should atleast be 10?

hahahahahha !!! hada close call like that, except we had it on 2 sizzor jacks, and 2 axel stands. with no wheels, very close call, would have ruined my mates pride and joy 200SX project

All of the power with none of the lag ^^

Auto E34i 535i grey interior good condition interior (one minor tear in the back seat) very tidy been well looked after 130,000 miles Any enquiries give me a buz on 027 555 8985 or [email protected] its for sale for 4k at the moment, but will take 3500 from bimmersport'ers

Un Be Leiv Able

AHAHAHAHAHAHAHAHAHAHAHA OMG !!!!! that brightens up my day, i have had similar predicaments with similar awkward factor, but it is so good to hear funny things like that. there was a stage where i carried round sufficient tools in nearly every car to do a engine transplant, had the hoist folded up nicely, car jack, 2 X sizzor jacks, full tool kit. O and then when something finally does go wrong, flat tyre . . .. and the spare tyre had oddly gone missing