Club 80-90 Forums

Hello,

Sunday.. Sunny...

Continuing with the heads..

Inspecting the valve seat to see if the lapping is sufficient....(not yet)....



Next I tackle the damaged rim for the compression ring and cylinder:



I use the cylinder as a grinding guide...



Do not take off too much.. should look like this...



from an angle:



Do all 4 cylinders.. keep everything in balance..

Next the studs (though in good condition), are given a run up and down with a sacrificial nut and grinding paste..

Believe me, it is so much easier when you spin the nuts on later..



As you can see, the exhaust gasket had failed..

I clean off the grinding paste with thinners.. note the girolle jar ...(pfifferling?)..

For mushroom valves..



Finally over to the parts wash, drench and then air blast clean.

So that is both heads done . 6 hours work..



Monday ..

Fit valves into 1 head after work..

Before you fit the valve, pass an oil soaked 'blot ' of paper down the valve guide.. be sure that there is no trace of grit..



A smear of CV joint grease on the valve stems will do no harm..



Then the valves fitted as usual..

!/2 hour work....

And then another 1/2 hour mowing the top meadow in the evening sun.. 28 celcius today...

Other head tomorrow..

Then crankshaft assembly jig to make..

Cordialement..



PS.. Yes thanks MM.. do IOU?

Interesting thread.

nope
mm

Hello,

Just a quick 'run through' on fitting the valves..

Pass a cleaning 'wad' of oil soaked tissue through the valve guides,,

Do this until the wad is clean..



Moly grease the valve stems..



Fit the oil seal onto the valve stem, then the spring and washer..



Then compress the spring and fit the collets..



Tap the spring with the mallet to check the collets are well seated,





Here is the the jig I made for working on the crank...



All set up..



Removing the distributor and camshaft drives..



Label the con rods and end caps..



Here is one split apart..



Only normal wear throughout..

So now I re assemble the bearings and drives on the 'nose' of the crankshaft...



I made up a tubular drift and put the drives on one at a time, there is no nead to use heat..

The new glaze buster arrived today, so I'm going to make a jig for that next..

Cordialement,

Hello,

Sunday sunny Sunday....

After a bit of head scratching, I made up a 'glaze busting' machine..

Photos later..

Well first thing was to really clean out the crankcases, and generally clean bolts and threads..

The crankcase has plastic dowels for the case bolts,

I made up a drift to make the job easier..



Then I finished building up the crank shaft...its a good idea to mark diametrically opposite the dowel hole on the bearing with a felt pen..

Makes life easier..

Here is the crankcase with cam and central bearing in:



Discovered this bodge (epoxy) repair where someone had 'welted' the case in the past..



But as its only 'bruised ' inside...



I think I will leave well alone..

Here is the case with the crank and cam shafts in.. ready for closing..



And here it is all closed up..



I have just 'nipped' up the bolts to let the jointing compound go off..

That is it for this week end..

Next.. hone the cylinder bores..clean the tinware under the cylinders.. set the end float..then assemble the main motor..

Followed by oil pressure and compression checks

Pictures to follow..

Cordialement,

Brilliant John, I'm looking forward to hearing her purr

Getting there John - great thread mate

Hello,

Thanks for the comments...

I thought you'd all gone away and left me ..

Right, 35 degrees C at work today, at least I was only welding till 2, and then big assembly...

T shirt and electric fan....

So, in my nice cool workshop this evening..

Put my 'universal flywheel' back on with the original thrust washers..

Check the end float..... 0.8 mm... fine by me

Engine spins like a top..



Cleaned up the oil pump ready for strip ,clean and prime..



Here is the sump plate now in position.. the cause of all the fuss..

Note the new 13 mm plugs...

Not 1/2 inch.. not mole wrench..



I always like the point where the rachet goes to 'on'.. and my hands stay clean..

Cordialement..

I know I got her out but I'm terrified of actually putting her back in my van, luckily my old Dad will be here to help

Hello,

Tuesday..35 Celcius at work..

Back in the cool workshop.... with big ventilator..

Fit cleaned and inspected oil pump, also turbine oil seal..

I use a big socket to drift the seal in..



Then the crankcase oil seal...



Note that these go in before the case bolts are torqued up...


makes life easier..

and here is the oil seal in place....

I've also put in the oil strainer cross bolt.. trimmed and compounded for a leak free case....(( ))



Supper time....

Cordialement

Hello,

Thunderstorm...much cooler..

Cleaning and preparing the pistons...

Sort of 'before and after'..



Remove the piston rings , check and clean the lands (where the rings go..



All 4 cleaned and ready for re- ringing..



Last thing for this evening..

Torque up the crankcase..



Supper time..

Cordialement,

Coming along nicely John. Bon Appetit

Hello,

So first thing was to deglaze the cylinders..

Here is a 'before and after'..

Can you tell the difference..



The object of the exercise is to remove the 'lacquer' in the bores, smooth out small scratches, and provide a more 'clingy' surface for the engine oil..

Here is the machine set up...



view of the interior..



This is the de glazing tool.. I use thread cutting oil for the stones..



I was most pleased with the result..

Cleaning tinware..



Don't know what beasties lived in the hot air intake tube....



Aha..

The engine support is broken.. new pair needed..



The death of the wongy flaps....



Believe me..

Cordialement,

Getting there John, cheers for taking the time to post up

Hello,

Right.. spent a bit of time this morning making an adaptor for the engine building stand..



Then on to the piston rings, these are American, and I find them excellent

... easy to mount and good oil economy..



Here is an oil control ring..



Clean all the cylinder head stud threads..



Use circlip pliers to drive the die tool on the middle studs..



Before and after shot..



Now the pistons go in...

As you can see they are a close fit..



Preparing up a cylinder , note the nice metal 'deck rings'.. always better than a cheap gasket set with paper (equivalents )



First cyinder on.. note 'keeper tube' holding cylinder in place..



4 cylindered bliss..



Can you tell what it is yet...

Thats it for this evening,

14 July. so I'm off to a fireworks party...


Cordialement,