>
> Okay. Laugh if you must, but someone please tell me what this is all about.
>
> I've seen references to 289 HP and HiPo, which I think are the same, and 289 K
> engines. What are you cats talking about? Do these two designations describe
> different engines? What are the differences? My Tiger has the stock 289
> engine; is it a K or HP -- or neither?
>
> And as long as I'm trying to figure out what's been making my car go for the
> last twenty-eight years, help me out with something else. What is the
>unleaded
> 92 octane juice that passes for fuel in California doing to my engine? The
>car
> runs fine and seems to have proper power, but does benefit from 104 octane
>boost
> in the mountains.
>
> Eddy - California
>
The K or HiPo series 289 has several differences from the stock 289:
beefier main caps
beefier connecting rods with 3/8" bolts (rather than 5/16")
heads have screw-in rocker studs, different porting
solid lifters
HiPo cam
10:1 compression ratio (higher than 2V; same as 4V)
stronger crank
different damper
additional crank counter weight
289 2V 200HP @ 4400 RPM
289 4V 225HP @ 4800 RPM
289 HiPo 271 @ 6000 RPM
dual point distributor
probably other stuff I don't recall offhand
I have a 2V 289 in my snake at the moment (CR=9.3:1 + 31 years of
carbon build-up) and it runs just fine on el cheapo 87 octane.
Roland
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