Pigfords OLD effort......now JULES NEW PROJECT!!!!!

#226 PostAuthor: **Ginger Bear** » Sun Mar 08, 2009 4:03 pm

Nice Bike........ Shame about the 'Boat Race' :lol:

Seriously Mark, I reckon you need to get Mick to come & re-point that wall for you.

Pigford · #227 PostAuthor: **Pigford** » Sun Mar 08, 2009 4:24 pm

GB, the wall was held up by ivy until the other weekend when Mrs P made me dig it all out :!:

Have made a start with degreeing in the cams....... :shock:

Luckily I alreadt had a small dial gauge & made a temp set up for fixing so it can read the bucket movement. Used a 'dead stop' to check TDC & set me timing wheel. Its all fairly simple in reality....... :??

Most cam timing is set with the valve slightly open.... usually 0.04" or there abouts. This ensures an accurate reading, coz if you go for "just open" due to the ramping on the cam, this is not very easy to do.

So you measure the degrees on the timing mark when the valve has just opened (0.04" on the dial gauge). Then you turn the engine (clckwise) until its just off closed (0.04") & note the degrees.

Now toy add the two figures together + 180 = duration. This is usually a figure quoted by the manufacturer & is not the FULL duration, coz the little bit at the start & finish which is the 0.04" is not included

I had 34 BTDC opening & 76 ABDC closing..... Add these together + 180 = 290. Now divide by 2 = subtract the opening value, 34 = 111 degs.

My target is 108 deg, so its 3 degs out :shock:

I've only cheked the inlet so far, but once I've checked the ex & rechecked the clearances, I can reset the lobe accurately :wink:

mick znone · #228 PostAuthor: **mick znone** » Sun Mar 08, 2009 4:27 pm

Bears right, i could do that wall, bit of a lime mix i think, but i'd rather have the skills Pigfords got with bikes, being honest.

PS,is that the plank Pasc was on about, behind the bike.

Pigford · #229 PostAuthor: **Pigford** » Sun Mar 08, 2009 4:35 pm

I don't know Mick, you give with one hand, and take away with the other :roll:

Those 'planks' are a temporary fix to keep the mad staffie from digging more of the garden up :!:

The little tyke was helping me dig the garden last weekend (chuffin' hilarious at the time) with mud flying in all directions........ :lol:

Trouble is, she's rather taken to this gardening lark now...

Rich · #230 PostAuthor: **Rich** » Sun Mar 08, 2009 5:01 pm

Make sure you shouldn't set the exh cam before the inlet.

Pigford · #231 PostAuthor: **Pigford** » Sun Mar 08, 2009 5:05 pm

Thanx Rich, that did occur to me, but coz I set it up on the inlet..... It was more of a first time (lose me cherry) trial :wink:

Actually, it shouldn't matter which are set first...... The inlet being the most crutial for effect of engine performance. Coz the cam is relative to TDC :!:

The cams are timed on adjustable sprox, so as long as each is calibrated to TDC, thats OK :wink:

I shall redo from scratch next time.... But it was rather windy with the garage door up...... & I needed the daylight

May get chance to have a proper go next weekend :!:

RALPHARAMA · #232 PostAuthor: **RALPHARAMA** » Wed Mar 11, 2009 8:17 am

Going back to your compression test. I have been bitten in the arse recently by trusting compression testing.

I should have known better after doing a test on the Old Gurl which suggested that everything in the garden was lovely, when in reality the the barrels had been bored way over size and the pistons weren't touching the sides and she was burning more oil than a 2 stroke with a badly set up oil pump :shock:

I had a punter bring me a Guzzi Targa 750 he had ill-advisedly bought through flea bay. It gave 150PSI on both pots so I made the assumption all was well. The reality is that the bore on the RHS is as sloppy as a fifty year old whore. Worse still they're Nicosil coated barrels so a re-bore isn't an option. It came to light when I put the Vacuum Mate on it and discover that the left had a massive average vacuum at the top of the highest range and the right had to read on the lowest scale. Obviously I checked absolutely everything else it could have been.

The moral of this story is to get a Leak Down Tester ... should be delivered today

Pigford · #233 PostAuthor: **Pigford** » Wed Mar 11, 2009 3:07 pm

Ralphy, as a special treat I may let you try your new toy out on me lawson

Pasc · #234 PostAuthor: **Pasc** » Wed Mar 11, 2009 8:52 pm

Looking good Marky Mark. I'm learning a few tips about degreeing in cams. I was always told by an old skool mechanic that even a stock engine can benefit from dialing in the cams due to tolerances at the factory.

ps, I'm glad you kept your clothes on for the shoot.

#235 PostAuthor: **Ginger Bear** » Wed Mar 11, 2009 9:33 pm

Nooooooooooo, don't give him any ideas :no

#236 PostAuthor: **Ginger Bear** » Sun Mar 29, 2009 4:33 pm

Any news on this one Mark? Or have you been too busy galavanting around the country collecting new projects

ted1r · #237 PostAuthor: **ted1r** » Sun Mar 29, 2009 4:53 pm

All I want to know is will you be coming to the Yorks on it :?:

Ted

Pigford · #238 PostAuthor: **Pigford** » Sun Mar 29, 2009 6:22 pm

Ain't touched it for a few weeks now :??

Been playing with me Trumpet today :wink:

Up late due to some over indulgence at CB's birthday do last night :shock:

Me black Zed is all dusted off & ready for the York rally :twisted:

Pigford · #239 PostAuthor: **Pigford** » Sat May 09, 2009 5:38 pm

UPDATE time........

Had a couple of spare hours... so been tinkering with the Lawson.....

Got me stuff together & degreed the cams in now....

The exhaust was 113....

and the inlet was 131 :shock:

a tooth out :!:

Amazing it ran so nicely... even if a bit reluctant to start up :??

Anyhow, cams now both set to 108 degrees..... Cam cover back on... just need to check carbs (again - can't remember what they are set at) and a new alternator gasket :!:

Will have anuvver go hopefully next weekend..... This must have been the cause of the rev's hanging up..... :evil:

zeroed · #240 PostAuthor: **zeroed** » Sat May 09, 2009 6:11 pm

looks very technical, you sure your not a doctor :cheek

Pigfords OLD effort......now JULES NEW PROJECT!!!!!

rally

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