"T.P.I. (Tuned Port Injected) in a boat"

"T.P.I. (Tuned Port Injected) in a boat"

Post by James Torgers » Sat, 27 Sep 1997 04:00:00


Have any of you seen or heard of
someone doing a CHEVY "T.P.I."
swap in any competition boat?

 
 
 

"T.P.I. (Tuned Port Injected) in a boat"

Post by AREuHER4 » Sun, 28 Sep 1997 04:00:00

Have any of you seen or heard of
someone doing a CHEVY "T.P.I."
swap in any competition boat?

If you really are interested in doing this, i would be glad to discuss it
with you. What you need to know, however, is that the automotive cam in
those packages puts the torque and horsepower peaks too high for ski boat
type use. You will also find the power actually a bit low for an inboard
boat application. The engine is tuned for use with a transmission for
torque multiplication. You don't have this luxury with a boat. In general,
the engine will labor in a boat application unless significantly retuned.
Further, the TPI system relys heavily upon input from the mass air flow
sensor (most applications) and the exhaust gas oxygen sensor. The former
could be made to work in a boat application, but the latter will not
function properly in the exhaust system water bath. The engine would
therefore run in "open loop" mode and will waste gas and not make efficient
power.

Let me know if you would like more info or have specific questions. There
are several TBI conversions available specifically for marine application.