Gordini specs

[Runningwild]

I had my 843 rebuilt to Gordini specs at Alpine America.  10.5 compression pistons, cam ground from new blank, ported,polished head and special distributor, regulator etc etc. 150+ hp.

[jbcollier]

Very nice!  Would you be willing to ball park on the cost?

[califkid_66]

If someone has had their engine rebuilt it would be nice
To have  a little info on their engines 

[Runningwild]

I’m still waiting for parts so I don’t have a final price yet.  Michel didn’t give me a complete spect sheet.  Says it’s built to the A110 Gordini spects.  I’ll know more later. 

[califkid_66]

Thanks i know he said he recommended 40s carbs for
His build so im trying to figure out my carbs  i have 45s and your engine is
Bigger than mine i believe you have 843

[Runningwild]

Yes I have the 843. Michel recomended the 40’s. I haven’t gotten the carb settings from him yet

[califkid_66]

I noticed some numbers on my pistons but this is confusing me they don’t make sense
I was told 1565 77mm but on pistons its 79 also a 23 and 00 im starting to think i
have a 1647 79 mm here’s the picture

[jbcollier]

Measure them across the skirt, perpendicular to the piston pin and then you will know.

[califkid_66]

measured my liners today 79 mm
that means it’s not a 1565

[jbcollier]

1647 cc

Probably an 843.  Will have o-rings sealing the liners and no need to set liner height.

[califkid_66]

yes that’s what i thought 
Now the only thing im not sure about is if i remove the cam i read somewhere you have to degree it and the videos i saw they said use your cam card so im not sure how to go about that the rest i pretty much understand

[jbcollier]

There is a procedure for installing the cam, timing chain and gears correctly in the manual.  That is all you require for a street engine.

Racing is another matter and benefits can be gained by setting up the camshaft's timing precisely.  First you have to have specs for your cam.  Then you need to have some way of adjusting the cam to different positions.  You can machine different keyways into the cam sprocket, make up offset woodruff keys or make a custom adjustable sprocket.  Now you can partially assemble the engine and use a dial gauge and degree wheel to figure out what you have.  Adjust as needed.

The trick is knowing what it is needed!

I advanced the cam 2° on a tricked-out Ducati single using offset woodruff keys.  On my Europa, only mildly-modded, I just put it together as per the manual.