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| Joined: | 03-14-2005 |
| Location: | Atlanta, Georgia USA |
| Posts: | 406 |
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Like all cars, getting to the head gasket requires removing the entire intake and exhaust in order to remove the head. With the 907, you have the added task of removing the cam towers. In short, half the engine has to be disassembled.
While you're at it...
Now would be a good time to invest in a valve-job, possibly new valves and guides, not to mention a proper valve-shimming. Give the carbs a thorough cleaning (if not totally rebuilt), and check the condition of your headers.
New belts are a must, and new tensioner bearings would be wise as would new spark plugs. A water-pump rebuild, and new thermostat wouldn't be a bad idea since the water pump has to be removed to get the head off the block.
Performance wise, the new 'black' head-gasket is thicker than the original laminated steel version. You will lose ~1/2 a point in compression, however, it seals MUCH better on an engine who's nip isn't perfect. While you're at it...a pair of the club's 107 cams would not only reclaim the lost performance, but will give you increased low&mid range drivability. Why not upgrade those plug-wires, cap and rotor??? the list goes on and on....
Alternatively, you could tear everything apart, replace the head-gasket and call it a day...then wait for any of the above to cause problems later.
Instead of a problem, I would view this as an opportunity for a Winter project that WILL net a very reliable engine, with a boost in drivability just in time for Spring.
Trailer it on over to Georgia and I'll knock it out for you in about 4wks....
Judson Manning