jamesmartin
Well-Known Member
no neither have i ,i dont think it was a particularly good kit ,was the best thing suddenly then died quickly as a fad
Turboman
Mab An Gov
Yes, timing case might be amplifying the sound, as it wasn't designed for gears.
Turboman
Mab An Gov
Heavy, compact timing case, with plenty of oil swimming around the gears should keep it quiet.
MJI
Well-Known Member
Gears work well with pushrods but not so easy for OHC.
Chains require living inside the engine for lubrication.
Belts are handy for engine designers and are generally quiet and easy to change.
Imagine the chains or gears for a quad cam V engine?
Done the belt on a 24 valve V6 a few times, was £100 for the kit including tensoner, but the same engine in wrong wheel drive configuration was an absolute nightmare to change, whereas I just sat on the scuttle on mine.
Nonos
single row chains
fibre gears
very long belt change intervals
All have contributed to scrapping engines.
I have had
chain driven DOHC S2 S4, SOHC S5, OHV S4,
belt SOHC S4, DOHC S4, quad cam V6
gears no idea
none 1 single
Chains require living inside the engine for lubrication.
Belts are handy for engine designers and are generally quiet and easy to change.
Imagine the chains or gears for a quad cam V engine?
Done the belt on a 24 valve V6 a few times, was £100 for the kit including tensoner, but the same engine in wrong wheel drive configuration was an absolute nightmare to change, whereas I just sat on the scuttle on mine.
Nonos
single row chains
fibre gears
very long belt change intervals
All have contributed to scrapping engines.
I have had
chain driven DOHC S2 S4, SOHC S5, OHV S4,
belt SOHC S4, DOHC S4, quad cam V6
gears no idea
none 1 single
Turboman
Mab An Gov
Not only there.
The old boys that taught me diesel fitting would be turning in their graves if they knew diesels are now made with plastic belts.
The depth of the timing chest on a 200 could have been a factor due to the water pump running through the timing case & cover, but no reason a deeper cast ally case cover with ZEUS emblazoned on it couldn't have been made to incorporate an extra half inch on the gears to make them helical IMHO.
I still think a 4 row Morse chain running in EP90 like the BW transfer cases would be an optimum solution & relatively low cost, a chain for a BW transfer case is only £240, fit and forget......
I still think a 4 row Morse chain running in EP90 like the BW transfer cases would be an optimum solution & relatively low cost, a chain for a BW transfer case is only £240, fit and forget......
jamesmartin
Well-Known Member
the zeus gears were helical, the chain in the borg warner runs in atf
Colthebrummie
Well-Known Member
My lancia beta coupe engine was written off cos of a belt failure, I've not trusted the things since. I know of several cases of belts snapping but I've never heard of a chain doing the same.
Col
Col
Every pic I've ever seen shows them in a way that makes them look like they're straight cut and the reports of noise suggest anything but helical gear sets.
I learned something new about a BW Morse chain today
You only need look at machines from the likes of CAT, still the market leader in mass excavation 360s and high power dozers, but they are the same way built down to a price not up to a specification.
jamesmartin
Well-Known Member
just the angle in the pics perhaps,this one shows the helical cutEvery pic I've ever seen shows them in a way that makes them look like they're straight cut and the reports of noise suggest anything but helical gear sets.
I learned something new about a BW Morse chain today
You only need look at machines from the likes of CAT, still the market leader in mass excavation 360s and high power dozers, but they are the same way built down to a price not up to a specification.
Yes, that angle demonstrates it perfectly. I still fail to see what they got wrong with the gear sets that made them so unpopular and prone to failure?
Turboman
Mab An Gov
Could be the answer lies in this thread. People have become used to belts, and think they are an acceptable solution.
Myself, I don't.
jamesmartin
Well-Known Member
i cant remember exactly i just removed the kits and refitted belts usually after a failure ,noise was given as another issue
Turboman
Mab An Gov
What was the quality of the gears like?
At one time, there was a problem with the timing gears on V6 Essex engines. They were plastic, with a ring of steel around the outside with the teeth on.
An upgrade kit with all steel gears solved the problem in that case.
jamesmartin
Well-Known Member
i cant say for sure but not the best i think, but i cant remember whether it was gear quality or securing to the shafts that was the issue
