head differences 03-05 450?

Motarded1 · #1 05-03-2008, 07:23 PM

First off can I put a 05 head on a 03? I see that there is a hole of some sort on the left side by the exhaust cam but dont see anything else right offhand. What is this hole for? Will this work or be a big pain to do? Benefits if any?

geoffg · #2 05-05-2008, 02:18 AM

I think there are an extra 2 head bolts on the 2005. I think there were head gasket issues on the earlier models. Check the parts books from the Gas Gas web site to be sure.

Motarded1 · #3 05-05-2008, 05:20 AM

ahhh I see that now. I could use a 05 lower cylinder tho, that doesnt look like the base gasket is different. Yes I had a head gasket problem now a bent valve problem so thouht it might be easier to get another head.

but what is the spot on the head by the exhaust cam?

geoffg · #4 05-12-2008, 01:02 AM

Hi

If you mean on the left hand side on the head, mine is blanked off. I think the designers had a tacho drive in mind. I don't know of a model that has a mechanical tacho though.

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