Australian Land Rover Owners - View Single Post - Does Anyone have a Dead 3.9 they want to get rebuilt?

garrycol · #10 (**permalink**) 3rd July 2009, 01:28 PM

Quote:

Originally Posted by Disco_owner

S&M ?

Also If you have an Engine and would are planning on rebuilding it yourself , they why reply?

Edit: Sorry Garry , that was inappropriate response , I'm not able to
answer the Q regarding the TopHat Liner Vs Normal Liner , someone
on here can answer that question , I'm also interested to know the
differences and advantage of a Tophat liner

Ok - my points - no I do not have an engine but to do a rebuild properly without all the right gear and tools but can be a bit tedious and frustrating with certain specialist bits having to be contracted out. Rebuilding an engine can be a bit masochistic - tedious and frustrating but immensly satisfying in the end.

I appreciate you want an engine to practice on - that also implies making mistakes and possibly wrecking the engine in a worst case scenario or creating a masterpiece at the other end - and all in between.

Many dead 3.9s will be dead because of slipped liners - you need to learn all about this before you start. There are three remedies - refit standard liners (not good), use top hat liners to stop them moving in the future (can be expensive) or using a pin to hold the liner in place - most engineering places are not keen on this but some will do it - less expensive. Even if the engine does not have slipped liner you need to consider what you will do with the liners.

Most 3.9s have the lower compression ratio - do you want to stay with this or go higher with improved performance. What about pistons etc.

My original post in a round about way simply raised a couple of issues that you will have to decide on before you start the rebuild or about the time the heads are off - you obviously did not know about these.

Good luck with it.

Garry