Talk to Sandy about what you are going to use the engine for. He is an experienced enough engine builder to know the best spec and setup for what you want.

Head wise, clean it, check the guides for wear and the valves for run-out, re-cut the valve seats and replace the stem seals.

As for the pistons, yes you can remove them from the engine without removing it from the car but it would be very awkward work without a proper lift / ramp and it would make far more sense to strip the bottom end down and replace all the bearing shells & seals while the engine is apart anyway.

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Rich

With regards to having the standard piston valve cuts enlarged there is a small amount that can be removed safely, i had this done on a previous engine build, however with the cams used (catcam 110's) the timing still had to be retarded slightly to allow for clearance (which is far from ideal). Be careful with the figures given by companys such as catcams as we found that even when they stated there would be enough valve clearance on standard pistons it was too tight to be left.

When we removed the engine for its rebuld with new pistons etc we still found what looked to be very slight marks on the pistons from the valves.
It may be worth biting the bullet if poss and buying something built to suit from the start.

There is a certain amount of work that could be done to the head, depends on the rest of the engine really, inlet mods etc.

The catcams 109's would probably be suitable for what you are looking at.

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2.1 16v 306 Rallye.

Ash Hargreaves managed to get away with fitting standard sized (86mm)pistons. it's not ideal, but if there is no alternative your best bet is to find out how worn your bores are, if they are still 'on size' you should get away with a light bore de-glaze. It's not ideal but if trying to stay within class regs it's your only option.

Another reason to seriously consider a forged piston is that they have far better thermal conductivity, this means the piston crown will transmit the heat of combustion away far quicker reducing the heat of the crown significantly. This in turn gives far superior protection aginst harmful detonation.

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R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars

depends on the size of your base circle, but generally yes you do risk that, though you'd need quite a lot more than standard to do that.

typically you'd be making the valve open earlier and for longer, rather than opening it further.

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need a part number? get on here - http://public.servicebox.peugeot.com

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