Engine rebuild Parts list

[McCabe-Thiele (Ted)]

Out of interest does number 2 mains journal look visually different to the others in any way?

[Dolomite_]

Out of interest does number 2 mains journal look visually different to the others in any way?

Gave it another clean today and remeasured it, it measured similar to the others, I think it was just still dirty. All the main journals look pretty much the same.

[McCabe-Thiele (Ted)]

👍👍👍

[Johnwebley]

Just trying to replace the alloy washers at the camshaft ends


I am trying Dowty seals

Same size,thickness

Should be an acceptable substitute

Sent from my SM-A546E using Tapatalk

[Bryanj]

Sometimes they work sometimes not, i bought a bag of 6mm alloy washers off fleabay, about 75% efective so sometimes need replacing but that is not a horrible job

[Dolomite_]

Update.

My brown and green bearing sets arrived from impex. Took a while to get them on their end but only took 5 days to arrive from Japan which is crazy.

Pictures of plastigauge measurements here: https://imgur.com/a/WOXySvp

Ive noted which one is brown. They are all 7 thousandths or less, except one which I will measure again.

From looking back at the chart could I change the greens to browns or would that be too tight of a tolerance?

[McCabe-Thiele (Ted)]

My first observation is why are you looking at the Imperial Scale when all the manuals bearing tollerances are Metric.
Secondly what scale of Plasigauge are you using?
Presumably the other side of your Plastigauge will show the metric readings.

If you look at the scale the smaller the clearance the more the Plastigauge is compressed.

Check what the 7 reading is by looking at the Imperial range of the Plasigauge I doubt somehow it's 7 thousandths of an inch that sounds excessive my mains  were around 38 Microns that's 1.49606 thou". The big ends were about 25 microns.

If I'm wrong someone will jump in.

[Dolomite_]

Someone on this thread said green so I got 0.007″ to 0.020″ (0.175mm – 0.500mm).

I didn't realize there was a metric scale on the other side until I measured 4 of the bearings, I'll have another look. Can I just match the same 7 reading location on the metric scale?

[McCabe-Thiele (Ted)]

Yes.

The gauge I used is 0.001 to 0.003"

0.025 to 0.076 mm

[Dolomite_]

Would it be worth getting a smaller gauge?


Where did you get it from? I can only find big boxes of it that are £35+

[McCabe-Thiele (Ted)]

Would it be worth getting a smaller gauge?


Where did you get it from? I can only find big boxes of it that are £35+

I believe you need to work with Platigauge that will measure the small gap involved.

Yes its expensive I can't remember where I bought mine but I did buy the wrong size first time as I bought on the colour code rather than the range.

I will send you a PM shortly.

[taysidedragon]

Would it be worth getting a smaller gauge?


Where did you get it from? I can only find big boxes of it that are £35+

Look on ebay or amazon for a small box of various thickness Plastigauge. That's what I bought for mine. It had small quantities of Red, Green and White if I remember correctly.

[Laverda Dave]

Here you go, this is where I bought mine. Very quick delivery as well.
https://www.ebay.co.uk/itm/264575277700?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=J-zL353uSQe&sssrc=4429486&ssuid=5XpGce3OSuS&var=&widget_ver=artemis&media=COPY

[Dolomite_]

Here you go, this is where I bought mine. Very quick delivery as well.
https://www.ebay.co.uk/itm/264575277700?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=J-zL353uSQe&sssrc=4429486&ssuid=5XpGce3OSuS&var=&widget_ver=artemis&media=COPY

Thats the size I originally used. Ted recommended going smaller to 0.025 to 0.076 mm. Which only seem to be sold in bigger quantities or are from the US. Luckily Ted had some spare which he kindly sold to me.

Working through measuring them now, got 3/4 of the way and my electric ratched went flat. I don't fancy fully tightening and undoing 10 bolts over a dozen times each

[Dolomite_]

Bearing clearance update 2.

From the generator side first:

brown 0.025mm green 0.038mm green 0.025mm green 0.050mm green 0.050mm
                                                                        brown 0.025mm

I put the brown in one of the green that measured at 0.050mm and it went down to 0.025mm. I'll remeasure the one that gave a reading of 0.038mm.

I think the best thing to do would be to go BROWN GREEN GREEN BROWN BROWN.

Then as other people have said, run it in carefully.