Engine assembly

A view inside the block.

I had been thinking about trying to get some oil out of the tappets while running. I decided to drill a small hole through them as you can see. It protrudes out into the block while the tappet is not in lift, so should possibly let some oil out all over the cam and reduce the weight of the follower and also the ammount of oil flying around the top of the engine at full revs...also oil the walls of the tappet holes while in lift as they spin (until they go bad!).

It will also possibly hold some oil in the followers after shut down, on the followers in lift then dump it on the cam as you start the engine. I don't think the little holes will cause any problems with strength , they go upwards slightly through a thicker part of the base than the thin upper walls. I noticed Jigsaws have holes so why not copy them!

Incidently on the fast road 89 with guite aggressive ramps the followers had been 25,000miles guess, they had not a mark on them, could have reused them after a planish.

Dialled the cam into the stated 103deg figure, I will try the TH5 and hopefully be able to get more top end from it on the 1.75 roller rockers, I'd be hoping the engine gives a "REAL" 110HP not a bullshit figure 8-) of the "I added a cam and dremeled my head which of course gives every engine spitfire 100HP" bollucks.

If it can pull 127mph and still going and it must have over 100HP anyway, its got a few CC now and CR is raised a bit.

I can't wait to drive it again - orgasmic in 2nd when you can overtake lines of cars from 40mph with shed loads of performance, can do tractors in first!

Anwyays, I am confident to say its dead on 103, joys of vernier and dial gauge. The timing cover marker is 2deg out from the old mark of TDC. I punched another mark to account for this, if I use this mark at TDC on the timing gun I wont be 2degrees out now thinking the old mark was right, if I just bolted it all up and didn't make a new marker then I'll be thinking 8deg BTDC is 10deg. Now I have a marker to suit the timing plate, just need to find a protractor and punch a mark for 10-20-30-40 deg BTDC.

Used just a smear of sealant here and there, not a bit came out in squish. Too much sealand = bad...the spray on hylomar could be good...

Shame I am lacking a couple of things...Could have it finished tomorrow. Back to rubbing down then, boo.

Below is my current gearing, with 7500 reliably useable would seem and possibly attainable in 4th gear with the wind behind it.

RPM 1st 2nd 3rd 4th
750 5.1 7.6 10.7 13.5
1000 6.8 10.1 14.3 18
1250 8.5 12.7 17.9 22.5
1500 10.2 15.2 21.5 27.1
1750 11.9 17.7 25.1 31.6
2000 13.6 20.3 28.6 36.1
2250 15.3 22.8 32.2 40.6
2500 17 25.3 35.8 45.1
2750 18.7 27.9 39.4 49.6
3000 20.3 30.4 43 54.1
3250 22 32.9 46.5 58.6
3500 23.7 35.5 50.1 63.1
3750 25.4 38 53.7 67.6
4000 27.1 40.5 57.3 72.2
4250 28.8 43.1 60.8 76.7
4500 30.5 45.6 64.4 81.2
4750 32.2 48.1 68 85.7
5000 33.9 50.7 71.6 90.2
5250 35.6 53.2 75.2 94.7
5500 37.3 55.7 78.7 99.2
5750 39 58.3 82.3 103.7
6000 40.7 60.8 85.9 108.2
6250 42.4 63.3 89.5 112.7
6500 44.1 65.9 93.1 117.3
6750 45.8 68.4 96.6 121.8
7000 47.5 70.9 100.2 126.3
7250 49.2 73.5 103.8 130.8
7500 50.9 76 107.4 135.3
7750 52.6 78.5 111 139.8
8000 54.3 81.1 114.5 144.3
RPM 1st 2nd 3rd 4th