Discussion
hi all i have recently been looking towards a TVR, sagaris in particular.
although i am quite suprised to discover that it isnt uncommon for these engines to need rebuilt at,what i would class(coming from an evo)as very low mileage, i was reading some posts on lads with cerbs rebuilding at 30k i cant understand it in this day and age a car such as this with such fragile engines.
im not having a dig at tvr's i think some of them are simply stunning.im genuinley intrsted to know why some need rebuilt so soon.
thanks.
although i am quite suprised to discover that it isnt uncommon for these engines to need rebuilt at,what i would class(coming from an evo)as very low mileage, i was reading some posts on lads with cerbs rebuilding at 30k i cant understand it in this day and age a car such as this with such fragile engines.
im not having a dig at tvr's i think some of them are simply stunning.im genuinley intrsted to know why some need rebuilt so soon.
thanks.
PascalBuyens said:
Sagaris should have less issues with the engine, it's one of the latest TVRs build, and the engines should have some mods to make it more reliable (basically every S6 built after 2003)...
Thats what i thought, my 06 sag went bang in may, should get it back this month with the bill !!!!Rob
Plenty of S6 engines after 2003 have needed a rebuild. Persoanlly I would rather buy an older car with a warranted rebuild than a newer car with no rebuild but that everyone tells you is fine.
I am just about to acquire my first Tuscan and research into engine's and rebuilds has been interesting. I have learnt to always call the company that did the rebuild. Some cars have only hard part rebuilds eg one camshaft and some finger followers, others have had everything done. Some have no warrnty and some have 3 years unlimited mileage, but no two appear to be the same.
I am just about to acquire my first Tuscan and research into engine's and rebuilds has been interesting. I have learnt to always call the company that did the rebuild. Some cars have only hard part rebuilds eg one camshaft and some finger followers, others have had everything done. Some have no warrnty and some have 3 years unlimited mileage, but no two appear to be the same.
What is interesting is that in my search for a car I have come across lots with rebuilds, and many of the owners have said "I bought one without a rebuild because I was told it will be fine, the servicing garage said it has no wear, I knew what I was doing, but then one day......."
Its a common story. Personally I am sure there are cars out there that have been fine and will be fine with no rebuild, but in essence its a £7k gamble.
Its a common story. Personally I am sure there are cars out there that have been fine and will be fine with no rebuild, but in essence its a £7k gamble.
chumleyuk said:
My Mk1 Tuscan S engine was rebuilt by TVR Power in 2003 and has been purring ever since. TBH there is no way of knowing that some of the people screaming from the roof tops about theirs going bang weren't probably thrashing theirs like a Honda. Comes with the price tag...
You're probably on the money for most failures - mechanical sympathy has a lot to do with it, I'm certain. Just because they'll rev to nearly 8000rpm, doesn't mean they can stand it indefinately 
blueg33 said:
What is interesting is that in my search for a car I have come across lots with rebuilds, and many of the owners have said "I bought one without a rebuild because I was told it will be fine, the servicing garage said it has no wear, I knew what I was doing, but then one day......."
Its a common story. Personally I am sure there are cars out there that have been fine and will be fine with no rebuild, but in essence its a £7k gamble.
Here are a few pointers from my limited experience and happy to be corrected:Its a common story. Personally I am sure there are cars out there that have been fine and will be fine with no rebuild, but in essence its a £7k gamble.
Liner fitting method improved at some point to reduce liner movement and leakage issues
Piston design changed around 2003 to reduce liner wear
Issues with cam wear and followers finally fixed around 2004 with the fitment of cold cast cams and better follower material
Exhaust valve material will always be an issue fresh from the factory and will only be rectified by specialist rebuilds
Conrods were made stronger late 2004, but a bit hit and miss.
Block design improved after 2005 to provide better cooling on no 6 cylinder...
I have a 54 plate (week 33), 43,000 mile 4.0S being rebuilt...the bores (still have the honing marks), pistons (good enough to be reused and acknowledged as being of good quality), crank, cams and followers are fine, but the exhaust valves and seats need replacing.
Most engines are rebuilt as a precaution rather than requiring it, because the cost of fixing the valve issues is about half the cost of a full rebuild (actually around £5000 + vat) as the engine has to be removed to take the head off. Looking at my engine, the bottom end would have been good for another 50,000 miles.
Noobody is disguising that these engines are little short of race engines for the road and because the pistons are quite large and run close tolerances and the crank is cast and runs quite large tolerances (due to expanaion), abusing these engines when cold will cause a lot of bore wear and cause the crank to pick up on the bearings..hence premature failure..
Treated well, valves aside the internals looks good for 80,000+
If you buy from a specialist, they can give a good indication of the engines health through a series of compression, oil pressure and hot run tests.
Let's face it, most of us are gear heads and relish the opportunity to have the engine rebuilt when given the choice.
Edited by PipeNslippers on Friday 11th March 19:21
Edited by PipeNslippers on Friday 11th March 19:33
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