randall977 Posted March 27, 2010 Report Share Posted March 27, 2010 I poped into Protek a few weeks ago to pick up a rear bumper and they told me that spending a few hundered on getting my engine balanced would be money very well spent (as the 4 engine could be quite rough). Is this really worth doing and what does it entail? Quote Link to post Share on other sites
TR 2100 Posted March 28, 2010 Report Share Posted March 28, 2010 I poped into Protek a few weeks ago to pick up a rear bumper and they told me that spending a few hundered on getting my engine balanced would be money very well spent (as the 4 engine could be quite rough). Is this really worth doing and what does it entail? Bit of a sales line to get business - it depends also on how many a "few" is, but IMO definitely worth balancing the engine if it's stripped down. Arguable whether or not it's worth stripping down just to balance. TR engines can be a bit rough anyway, so if you have it balanced, at least you will know you have done all you could. It's the crankshaft/flywheel/clutch assembly I assume they are talking about, that's the priority, although you can go further and balance the pistons/con rod assembles too. Best way is to balance the crankshaft first, then crankshaft with flywheel attached, then ditto with the clutch attached. There should then be a paint mark to allow you to line up all components. Check first what they recommend / intend to do. AlanR Quote Link to post Share on other sites
Kiwifrog Posted March 28, 2010 Report Share Posted March 28, 2010 Christian As a big 4 pot tractor engine they can be a bit rough at Idle and slightly lumpy at speed, having said that the last 2 TR4's i have owned were not balanced and revved to 6000rpm without trouble or undue harshness, its part of the charm. Having said that as you have your engine in pieces it would probably be worth doing if it does not cost too many beer tokens. Cheers Alan Quote Link to post Share on other sites
RogerH Posted March 28, 2010 Report Share Posted March 28, 2010 Hi Christian, The questions are - Will balancing make enough difference to engine life and ride comfort. The answer is maybe. Is it worth the expense - maybe! With the engine in pieces you have the opportunity. You will be happy within yourself knowing you have done as much as you can. Whether or not you get the crank balanced do get it cracked checked around #4 big-end journal. Roger Quote Link to post Share on other sites
jamie hart Posted March 28, 2010 Report Share Posted March 28, 2010 I have just had my TR4 crank and fly wheel assembly balanced and it was well worth the exercise. The car was already in pieces when I bought it so I have never run the engine, but I was staggered by how far the clutch cover was out of balance. Crank was fine together with pistons, the cover was 30 grams out of balance which is alot! I balanced my previous TR3 engine which ran beautifully, the difference is that on the 3 I lightened the flywheel whereas I am leaving the 4 as is. This is because I really want a road car that will idle smoothly, lighteneing the fly wheel does tend to make the car a bit lumpy on idle. Out of interest the cost was around GBP 60 so it was well worth it. Quote Link to post Share on other sites
Alec Pringle Posted March 28, 2010 Report Share Posted March 28, 2010 Full balance on a 4-cylinder engine should be around the £100 mark. Well worthwhile. Cheers, Alec Quote Link to post Share on other sites
randall977 Posted March 28, 2010 Author Report Share Posted March 28, 2010 Thanks for all of the advice etc. I will give my local engineers a call tomorrow... Quote Link to post Share on other sites
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