Here is a sort of deja-vu quote form the same Honda article:
>There are three engine choices in the Japanese Integra lineup. The base
>engine is a SOHC, 16-valve, 1590-cc, inline four-cylinder unit breathing
>through two side-draft CV carburetors, a rarity these days.
BTW, didn't Triumph go to bigger bearings to harmonize the 1300 engine with
some other one (TR6?) Does that other engine have the same reputation?
Doug Braun
'72 Spit
At 08:45 PM 12/21/01 , Carter Shore wrote:
>Big crank journals = big con rods
>The big con rods are *heavy* (750g!!).
>Since the small crank Spit con rod bearing was already
>the 'weakest link', this just makes things worse.
>(about 50% of the max bearing loading comes from the
>mass of the rods and pistons being whipped around at
>max RPM, while the the gas loads from combustion are
>greatest at max torque)
>
>For well designed automotive journal bearings,
>increasing the diameter does not increase the load
>capacity (because the rubbing velocity increases in
>proportion). It does however increase the friction
>losses, require more oil flow from the lubrication
>system, and increase the weight of the associated
>components.
>
>To increase the load capacity, you have to make the
>bearing wider, and/or improve the materials and
>manufacturing process.
>
>Here's an article about an improved bearing material
>from Honda that allows greater load capacity:
>
>http://g-speed.com/pbh/ae-honda-tech.html#bearing
>
>
>Carter Shore
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