I've been looking for a while for a new engine which I was going to rebuild but after much searching I have found that it is going to cost a fair bit and that I will be wasting my time really unless I go for forged pistons ect to beef up the bottom. The head gasket has gone on my head (well I think it's the head gasket) mayo in the oil and brown water. But could there be any other causes of these problems that may be in the bottom end? Would the head gasket going require a rebuild from the bottom up anyway, I can get the machining done cheap as a friend owns an engineering firm that service car engines but the parts all add up.

Basically, is it worth me rebuilding the engine or should I just go for sorting the head?

All this after I just made a list of stuff for my suspension and a quick check of the oil has turned into a major job that needs to be done.

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205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"

you would be so much better diagnosing it properly rather than guessing. get a compression test done, takes a few minutes and shouldn't cost much if you take it somewhere

as said the oil cooler/heat exchangers can fail and make a fair old mess. how has the car been having? underlying problems etc or.. ? nothing?

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306 rallye reproduction decals (full sets/individual decals) | 306 b-pillar textured vinyl weatherstrips
306 slam panel esso stickers | 306 yellow / orange / pension fund red side door badges
gti6 inlet manifold badges | 306 rear boot badges (p2/p3)
winner of Extraction of toys from prams with outstanding vigour award 2009 [source: gti6 owners club]

How much "mayo" have you got and is it just on the oil cap?

I could just be moisture with the recent temps especially if you only do short journeys.

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Ryan