Yes that's right, but 2-stroke is the key-word.
I'm not a advocate for superchargers
or turbochargers on a 4-stroke gasoline engine.
You're mixing facts and theorys about
gas, 2-stroke diesels and 4-stroke diesels into the same category but they
are all totally different animals and have
diffent uses and requirements.
Superchargers don't have the associated
"lag time" of a turbo with the exception of the RX-7 which used a small
turbo that would spool up quickly and provide
low-end torque then a larger turbo for
top-end, but these cars were very explosive when the boost came in and
traction became a issue rapidly
(especially in corners).
American car manufacturers may have
chosen to run belt-driven compressors
instead of exhaust gas driven compressors because of manufacturing
constraints or ease of installation,
I don't work in Corporate so i really don't know.
but when u compare apples to apples
the turbo requires less power to make the same amount of power that a
supercharger will provide.
Mad Dog is that directed to me? Cause I do understand all that you say here.
Just not sure.
And bang on, a 2 stroke will not start with out a blower. It will run (not
very well) but will not start. With the ports in the liner, the piston does
not even come close to creating enough vaccume to draw in enough air at
they went to belt driven superchargers:
Because of the durability issues associated with turbos. can you remember
how many times friends had to get turbos replaced under warranty?
Can you remember how many turbos you replaced in the field?
That's just it:
Big, gigantic tractor diesels. Not a class C Cummins, a power stroke or a
Try that with a small displacement motor, watch what happens.
The B&M and other blowers available for making factory cars perform better,
have less boost and are internally overdriven.
They run on a totally different principal:
If you pitted with them for 7 or 8 years, and were allowed to stand at the
tree at Englishtown every week for those years.You'd know what you're
talking about too.
They run 13 to 1 compression in those dragsters and funny cars, and the
motors without blowers make close to 3,000 horsepower, for a grand total of
about 5,000 with the blower. If they were running gasoline, they wouldn't
touch the 1,000 HP mark.
King, I'm not trying to disrespect you at all, but detroit blowers are
internally overdriven, from 1.7 to 2.6 depending on the original
application, N/A or turbocharged etc. And a 6-71 motor is only 426CID (71CI
per hole X 6 holes) Not at all a big gigantic beast you're picturing. Sounds
kinda perfect for a 454-500CI Chevy big block to me or SBC for that matter.
I also never said I was burning gasoline.
A truck/tractor diesel:
Has about a 5 or more inch bore, and a long stroke, the smaller passenger
truck diesels have no more than a 4.5" bore, and a somewhat shorter stroke.
The heads on the commercial diesels have close to 2.75 inch valves, the
passenger diesels maybe 2.2 inch. totally different flow characteristics,
and boost pressure to compression ratio.
On a passenger diesel, you'd need in the neighbor hood of 15 psi boost, to
start to see a really noticeable increase in power.
ok so I did a little reading in the 6-71 service manual at work today. 6-71-
Bore 4.25" Stroke 5" Obviously no intake valves as it's a 2 stroke. So how
would it be detrimental, taking a blower off a 6-71 and supercharging a BBC?
Of course after changing out the bearings to sealed ball bearings.
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