Coventry Classic Engines

[Wes]

Hi

Anyone have any experience with these guys?

Thanks

[bobtail4x4]

I have a rebuilt 1275 from them,
the rear crank seal leaks.. lots

[Wes]

I have a rebuilt 1275 from them,
the rear crank seal leaks.. lots

[philthehill]

Unless it is a Maestro engine which has the factory installed rear crankshaft seal I am not surprised that the crankshaft seal leaks. The 1275cc in line engines were not fitted with a seal just the return scroll. Is it the after market seal leaking or is it the crank bearings and return scroll worn out?

[bobtail4x4]

its the aftermarket conversion.
bought another kit as garage mullered the old one,
new seal lasts about 200 miles, instructions say machine the crank end,
not done, when I pull the engine its getting a speedy sleeve and new seal,

[philthehill]

What 1275cc engine do you have fitted?
The aftermarket kit with the spacer is not suitable for the 1275cc MG Midget/Sprite engine as the flywheel is lifted off its register which allows the flywheel to come loose even with the two dowels and six bolts.
Only the MED crankshaft rear seal kit is suitable for the 1275cc Midget/Sprite and that requires some machining.

[bobtail4x4]

Im told its a marina 1275
no spacer,

[philthehill]

Thank you for that information.
In that case the crankshaft flywheel face needs to be ground or a speedy sleeve (or both) fitted to enable the seal lip to run on a perfect surface.
or
The engine is rebuilt with the return scroll re-instated.
My experience with the after market lip seal is not positive and I soon resurrected the return scroll system. The return scroll system correctly installed does not leak.

[Wes]

So for a bog standard 1098 Minor engine they should be OK?

[philthehill]

I personally would not fit the aftermarket crank seal conversion kit to any 'A' Series owned by me as I consider it totally unnecessary.
Do a good job in assembling the engine and there will be no requirement for any aftermarket crank seal.

[Wes]

Sorry i should have been clearer... So for a bog standard 1098 Minor engine rebuild/recon Coventry Classic Engines should be OK?