04 T350 Top End Rebuild Qs
Discussion
All,
I am currently in the process of having a top end rebuild by power, can anyone tell me if by only having the top end done this could add extra strain on the bottom end causing premature failure in the botom end.
I appreciate there are no hard and fast answers...just looking for advice or previous experience
TIA
I am currently in the process of having a top end rebuild by power, can anyone tell me if by only having the top end done this could add extra strain on the bottom end causing premature failure in the botom end.
I appreciate there are no hard and fast answers...just looking for advice or previous experience
TIA
Top-end is good enough, if the bottom end IS ok....
You can go preventative and end up spending 10k, or you can go with just the top-end and pay 10k later if the bottom end goes too....
Although saying that, its a very rare occurence a rod lets go, but it has happened to a handful... so if you're one of them or not... who knows...
fancy a gamble? so say theres 7000 speed-6 engines out there, and only say 100 had a rod failure... that still means 6900 didnt have rod failures, soooo....
Speak to Dom at Power more about this, and maybe also speak to Paul of Austec, Austec's done over 30'odd speed 6 engine rebuilds now, and uses his own parts, so might have a different opinion on the whole thing... but to be honest, Dom or Paul, you're in safe hands with both these guys, they know enough to know whats the best way.... but IF they say go for a bottom-end rebuild, DO IT! cos last thing they'll do when the unimaginable does happen, is turn around and say "didnt we suggest you..."....
You can go preventative and end up spending 10k, or you can go with just the top-end and pay 10k later if the bottom end goes too....
Although saying that, its a very rare occurence a rod lets go, but it has happened to a handful... so if you're one of them or not... who knows...
fancy a gamble? so say theres 7000 speed-6 engines out there, and only say 100 had a rod failure... that still means 6900 didnt have rod failures, soooo....
Speak to Dom at Power more about this, and maybe also speak to Paul of Austec, Austec's done over 30'odd speed 6 engine rebuilds now, and uses his own parts, so might have a different opinion on the whole thing... but to be honest, Dom or Paul, you're in safe hands with both these guys, they know enough to know whats the best way.... but IF they say go for a bottom-end rebuild, DO IT! cos last thing they'll do when the unimaginable does happen, is turn around and say "didnt we suggest you..."....
A couple considerations to take in:
The T350 with a 3.6 ltr engine contains a short stroke crank and has longer rods. The rod ratio is much improved over the 4.0 ltr and is much better balanced as a result. Hence the T350 does not suffer from the same issues as the 4.0 ltr derivative. The 4.0 ltr was an after thought as all engines were originally designed to be 3.6. To get the 4.0 ltr's the crank was stroked and the rods length reduced.
I would suggest your bottom end is likely fine and you should not need to worry about the rods.
Incidentally the T350 revs like a beaut, it also has the same cam timing as the red rose 4.0 ltr engines.
Regards G
The T350 with a 3.6 ltr engine contains a short stroke crank and has longer rods. The rod ratio is much improved over the 4.0 ltr and is much better balanced as a result. Hence the T350 does not suffer from the same issues as the 4.0 ltr derivative. The 4.0 ltr was an after thought as all engines were originally designed to be 3.6. To get the 4.0 ltr's the crank was stroked and the rods length reduced.
I would suggest your bottom end is likely fine and you should not need to worry about the rods.
Incidentally the T350 revs like a beaut, it also has the same cam timing as the red rose 4.0 ltr engines.
Regards G
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