Props

baja john · 08-06-2003, 05:00 PM

What have you guys found to be the fastest running 4 blade props? I've got a 29 Outlaw twin 502's with Imco headers , RPM kits, Roller Rockers, Ported intake manifold and nose cones by Bobs machine shop. I had Mirage Plus 27's but now I can barely get up on plain with them, kept breaking loose. Tried 26 Bravo 1's bit hitting to high of RPM. I know 28 or 30's would work but just wondering if there's someone that makes them the same diameter as the Mirage Plus. I'm thinking smaller diameter with 4 blades should still give me the same top end as a 3 blade.

JaayTeee · 08-06-2003, 05:25 PM

I run labbed 30" bravo's,
you can't get them to break
loose.

A couple years back when I
was running labbed 28's, I
tried a pair of 25p mirage plus,
it was a ***** to get on plane,
and it ran 2 MPH slower, and
it wasn't due to hitting the
rev limiter either.

These were tested within a
half hour, so there go the
"variables"

Some guys on this board swear
by the 3 blades, I used to too.

All I can tell you is that the bravo's
seem to work best on mine.

jt

liquid asset · 08-06-2003, 09:33 PM

I agree, labbed bravos usally pic up a little over a stock mirage, but I would send them to mercury racing, Bronson hill, York, or Throttle up. Use someone with race credintials, Its easy to screw it up

just my .02

08-07-2003, 08:35 PM

Hey Baja,

What kind of speed are you getting out of the twin 502's. I just picked up a 98 with the same engines and switched to 26 Bravos from 25 mirages and run the same rpm's. I can't figure out why but I am only getting 4500 rpm out of either prop and only hitting 68-69mph. I should be running in the mid to upper 70's all day long. I had them checked and the mechanic noticed that the TPS sensors in the throttle bodies are only reading 75% and 82%. That's probably most of the problem. I'll have to get the ECM's remapped to get it back to normal. Just looking for your thought on this

liquid asset · 08-07-2003, 08:37 PM

I have a 97 4 sale on the boats 4 sale forum, running 74-75 at 5,000 with 27's

baja john · 08-08-2003, 12:02 AM

JT what is in your boat, what size and year? What speeds are you getting?

JaayTeee · 08-08-2003, 12:42 AM

Quote:

JT what is in your boat, what size and year? What speeds are you getting?

It's a 98' 29 outlaw sst.
HP500's
best speed, gps: 84.6

Took it out yesterday to do some
prop testing, conditions were smmoth,
90* temp, 1/4 tank of fuel 2 people,
my 30p props: 82.5 mph.
Threw on a set of 27p mirages (not plus's)
had to nurse it out of the hole,(blows out badly)
only ran 78.2 mph, up against the rev limiters.

I guess I just reconvinced myself
that the bravo's are the best for my combo.

jt

baja john · 08-08-2003, 02:53 AM

I got them on order cant wait to try.

Thanks.

08-08-2003, 11:35 AM

Baja,

you never answered. What are you running now, at what rpm and what speed are you getting?

29 OUTLAW · 08-08-2003, 11:51 AM

I have a 29 Outlaw with 2 496HO's. Boat came with un-labbed 25" 3 blades. Ran about 76mph. Tried un-labbed 26" 4 blades. Only ran about 74mph. Now use labbed 27" 3 blades. GPS best has been 78.6mph.