burning oil
08-08-2014, 05:09 AM
#21
Registered User
It'll more likely be worn rings as the FRM is a LOT harder than the ring material for this very purpose.
Get a borescope down there and check out the condition of the liners.
Replacing rings isn't too bad of a job and can be done with the engine still in the car.
The thing is, for these engines, a torque wrench isn't accurate enough and you'll need to use a decent set of vernier calipers or micrometer to measure before you undo the big end caps and after you tighten them up.
Get a borescope down there and check out the condition of the liners.
Replacing rings isn't too bad of a job and can be done with the engine still in the car.
The thing is, for these engines, a torque wrench isn't accurate enough and you'll need to use a decent set of vernier calipers or micrometer to measure before you undo the big end caps and after you tighten them up.
08-08-2014, 02:30 PM
#24
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Originally Posted by Nick Graves' timestamp='1407344939' post='23275647
it's probably worn bores.
but in a good way 
08-08-2014, 10:19 PM
#25
It'll more likely be worn rings as the FRM is a LOT harder than the ring material for this very purpose.
Get a borescope down there and check out the condition of the liners.
Replacing rings isn't too bad of a job and can be done with the engine still in the car.
The thing is, for these engines, a torque wrench isn't accurate enough and you'll need to use a decent set of vernier calipers or micrometer to measure before you undo the big end caps and after you tighten them up.
Get a borescope down there and check out the condition of the liners.
Replacing rings isn't too bad of a job and can be done with the engine still in the car.
The thing is, for these engines, a torque wrench isn't accurate enough and you'll need to use a decent set of vernier calipers or micrometer to measure before you undo the big end caps and after you tighten them up.
08-11-2014, 05:54 AM
#27
Registered User
I also know that crate duratec engines with ITBs and 4-1 manifold make 200bhp. Simply taking them apart and rebuilding them people lose between 10-15bhp.
These engines are built using tools that cost tens of thousands of pounds each and they are built in temperature controlled environments to ensure consistency.
The window of accuracy you have is tiny - much smaller than an arbitrary torque number that Honda have just bunged in to satisfy regs.
Still, if you measure the endcaps before you remove, you then have a tasty datum for reassembly and don't need £1000 torque wrenches
08-11-2014, 08:48 AM
#28
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