Hi Tom-
> Brent in my opinion you are completely out of line when you make the
> comments you have made against a remanufacturer of Jaspers reputation.
I certainly don't intend to tar Jasper with my very wide brush just yet-
Certainly an engine suffering a catastophic failure at relatively low
mileage is unusual, and will have happened for some reason. My main message
is that the engine certainly failed for a reason, and it would be worthwhile
to investigate the reason. I would find faulty assembly/machine quality,
poor selection of cores or 'honest error' perfectly likely reasons for an
engine failure. This would lay blame at Jasper's doorstep. How well they
back thier product is entirely another question, but its quite
straightforward to examine the failed engine and establish the cause.
There are also certainly many ways an operator can blow up an engine,
overrevving them or running them out of oil are certainly ways to do this.
Many abusive practices cause failure later. My impression from the original
post from Jim is that he bought the GMC with the engine already installed
and a few thousand miles service on it. In this case the PO may have
contributed to a failure, one 16 year old with a heavy foot can cause a lot
of damage that materializes a ways down the road. Or one hour extricating a
GMC from a snowbank.
> Comments like "I suspect Jasper is at the bottom of this" and "You'll be
> able if you measure and inspect the remainder of the bearings and journals
> to determine what happened. If the rod big ends are egg shaped, and theres
> torque variances on the rod nuts, or the cranks is scored heavily
(scratched
> up) or the bearings exhibit bare copper colour patches or offset wear
> patterns, its Jasper" are totally unfounded.
Actually, they aren't- Jasper may well be vindicated, so to speak. Careful
examination of the engine will reveal what caused the failure. Rather than
speculate about it, forensic examination should reveal where the problem
originated. Theres essentially three basic possibilities-.
A; Jasper made a dud engine with poor machine/assembly work or inadequately
inspected cores etc.
B: A component failed, lets say a connecting rod fastener lost torque etc.
C: Someone, somewhere, at some point abused the engine by running it very
very fast or with insufficient oil.
If this engine had 120,000 miles I'd suspect the latter two much more than I
do presently, but to have failure at very low mileage is ample reason to
suspect the remanufacturer.
> Jasper produces some of the finest and most reliable engines and
> transmissions on the market and backs them up with the most liberal
warranty
> you can get.
I am aware of this general opinion. I have no opinion regarding Jasper
specifically. I do take a dim view of the products offered by most machine
shops when I have examined them however.
> Why would you make comments like this when as you say "I have
> never examined a Jasper engine, and cannot comment upon the particular
> quality of thier products"? This is how a manufacturers reputation gets
> trashed. This sort of character asassination should not be allowed on this
net.
Well, Tom, essentially I don't want to be critical of Jasper, but I also
dont want to suggest Jim or the PO abused it either. Any might be true at
this point. What is certain is that its shouldn't blow up at that mileage,
and it would bear close inspection to find out why this happened. I just
feel badly for Jim having an engine go limp when it should have lasted a lot
longer.
Anyhow, hopefully the engine will get examined and some reasonable account
for the damage will be possible from the clues within it.
Brent Covey
Vancouver BC
> Brent in my opinion you are completely out of line when you make the
> comments you have made against a remanufacturer of Jaspers reputation.
I certainly don't intend to tar Jasper with my very wide brush just yet-
Certainly an engine suffering a catastophic failure at relatively low
mileage is unusual, and will have happened for some reason. My main message
is that the engine certainly failed for a reason, and it would be worthwhile
to investigate the reason. I would find faulty assembly/machine quality,
poor selection of cores or 'honest error' perfectly likely reasons for an
engine failure. This would lay blame at Jasper's doorstep. How well they
back thier product is entirely another question, but its quite
straightforward to examine the failed engine and establish the cause.
There are also certainly many ways an operator can blow up an engine,
overrevving them or running them out of oil are certainly ways to do this.
Many abusive practices cause failure later. My impression from the original
post from Jim is that he bought the GMC with the engine already installed
and a few thousand miles service on it. In this case the PO may have
contributed to a failure, one 16 year old with a heavy foot can cause a lot
of damage that materializes a ways down the road. Or one hour extricating a
GMC from a snowbank.
> Comments like "I suspect Jasper is at the bottom of this" and "You'll be
> able if you measure and inspect the remainder of the bearings and journals
> to determine what happened. If the rod big ends are egg shaped, and theres
> torque variances on the rod nuts, or the cranks is scored heavily
(scratched
> up) or the bearings exhibit bare copper colour patches or offset wear
> patterns, its Jasper" are totally unfounded.
Actually, they aren't- Jasper may well be vindicated, so to speak. Careful
examination of the engine will reveal what caused the failure. Rather than
speculate about it, forensic examination should reveal where the problem
originated. Theres essentially three basic possibilities-.
A; Jasper made a dud engine with poor machine/assembly work or inadequately
inspected cores etc.
B: A component failed, lets say a connecting rod fastener lost torque etc.
C: Someone, somewhere, at some point abused the engine by running it very
very fast or with insufficient oil.
If this engine had 120,000 miles I'd suspect the latter two much more than I
do presently, but to have failure at very low mileage is ample reason to
suspect the remanufacturer.
> Jasper produces some of the finest and most reliable engines and
> transmissions on the market and backs them up with the most liberal
warranty
> you can get.
I am aware of this general opinion. I have no opinion regarding Jasper
specifically. I do take a dim view of the products offered by most machine
shops when I have examined them however.
> Why would you make comments like this when as you say "I have
> never examined a Jasper engine, and cannot comment upon the particular
> quality of thier products"? This is how a manufacturers reputation gets
> trashed. This sort of character asassination should not be allowed on this
net.
Well, Tom, essentially I don't want to be critical of Jasper, but I also
dont want to suggest Jim or the PO abused it either. Any might be true at
this point. What is certain is that its shouldn't blow up at that mileage,
and it would bear close inspection to find out why this happened. I just
feel badly for Jim having an engine go limp when it should have lasted a lot
longer.
Anyhow, hopefully the engine will get examined and some reasonable account
for the damage will be possible from the clues within it.
Brent Covey
Vancouver BC
