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Newbie engine rebuild...  Spitty overheated


Dan Miller

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  • 2 weeks later...

Hi all

hit my first newbie failure, and then a questions

failure = I misread the torque settings on the connecting rod cap bolts, and thought they were the same as the main bearings, so I tried to over-torque them.  turns out I had bought a whole new set, so I removed them all and put the new ones in to correct torque setting  (had to buy a new torque wrench though LOL)

problem1 = Haynes manual states I should have washers with the connecting rod end cap bolts, but there were none when I stripped her down, and I do not have any in what I ordered from Canley last year..  should I stop now and order them?

problem2 = just doing the clearances on the Crank-end-float...  it seems to be at around 0.28, where the threshold seems to be 0.06 to 0.14...    I am assuming I need to buy an oversized thrust washer set...  which means I have to take all the caps off again  :-(

what size do I buy?  0.14 over?

sorry guys for the newbie questions, never had my hands inside the bottom end of an engine before...

cheers
dan



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looks like to need to just remove the back main bearing cap,

With a screw driver to lever crank from fully rear to front measure total travel .
Base on 7thou end float.
If total movement is say 14 thou you need a 7thou shim to give you your 7thou endfloat

that's word from Mick on tssc.  suspect my issue will b that my movement goes beyond my feeler gauges!  and without anything printed/etched into the current washer, I am going to have bother

anyway, wish me luck!!!  

(hmm  I wonder do I hse to loosen all of the caps to allow the crank to be levered forward, or should it move anyway)

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Dan,
No need to loosen the caps. The normal bearing clearance is sufficient to allow the crank to move.
                                                                                       Good luck,
                                                                                       Paul

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cheers guys...  I did some measuring just with the feeler gauges...  as a test, I put her back together (washers and all), I pushed crank all the way to front and used feelers to measure the size (the rear of the rear main bearing, outside the block), and it was 0.030.. I then pushed it all the way back, and saw an increase of 0.008... not scientific, but it does give me a number...

I have just received my magnetic dial-gauge, so I will work out how to use that, and see if I can get a more accurate measurement.  I find it hard to get my head around the fact that the inset in the block under the rear-main-bearing cap, is not quite as wide as the "standard" thrust bearing, so removing them in my opinion, will not give me the movement I care about...    what I would really need to know, is how much past the inset, does the washer go, and then use that as a measurement plus the movement

finding it quite hard to explain, even to myself.  thinking the best thing to do is buy a few thrust washer sizes, and try them and then check movement...  should only need a 0.005, 0.010 and a 0.015 to be safe.  can I use 2 different sizes either side?  I am sure it does not matter...



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OK, think I might just take a punt and get this lot from Canley:
(I have noticed that you can no longer buy the woodruff key for the crank, wonder why?.  the 2 shims on mine look a little distorted from maybe the engineers or my man-handling, not sure if I have to replace them so I have bought 2 anyway but I have never removed the woodruff and reluctant to now due to not being able to buy a replacement from Canley)

Also going to pout spring washers into the main bearing cap bolts as recommended.  looks like I do not need them for the con-rod end-caps

6 x WL210 SPRING WASHER - 7/16                                   £0.20 EACH  
1 x 145275 SHIM - .004" - LARGE CRANK                          Â£0.75 EACH  
1 x 145276 SHIM - .006" - LARGE CRANK                          Â£0.95 EACH
2 x 144195/10 THRUST WASHER - LARGE CRANK .010       £5.34 EACH  
1 x 144195/15 THRUST WASHER - LARGE CRANK .015       £5.34 EACH  
1 x 144195/30 THRUST WASHER - LARGE CRANK .030       £5.34 EACH  
2 x 144195/5 THRUST WASHER - LARGE CRANK .005         £5.34 EACH  

I can resell the unused ones on ebay if need be, o keep them for next time I mince the engine....

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