User Tag List
Thanks: 0
Likes: 0
Results 1 to 15 of 29
Thread: Allison Question
-
07-03-2005, 07:02 PM #1
Allison Question
Okay all you Allison guru's. I just bought an XR 2002. It's got a Merc 260 with a CLE case on it. This is my first experience with a fast V-bottom so I'm still learning. I'm finally getting into the mid 90's comfortably, when I get around 95 or so the bow seems like it wants to loose lift and fall. As soon as this happens I get out of the throttle. Is the beginning of it blowing out? I've heard that Allison's don't like the CLE cases over about 90. Is this the case? I'm running about 1/4" below the pad with what is supposed to be a 30" cleaver. I appreciate any info you guys could give me.
Greg
-
07-03-2005, 07:12 PM #2
Greg,,, First off, Congrat's on the Ally!!!!!!!!!!!!
Second off,,, I'm NO guru!!!!!!!!!!!!
But,, we run our XR with a stock 260 (and 26cc heads) to 105 without any problems!!!! And a 26" Tillman worked Yammy!!
But when "Sassy's Bow drops she keeps going straight!!!
We are 12" back set and above the pad!!!!!!!!!!!!!!!!!!
Does your gear case have a nose cone??????
I'd try another prop or three!!!!!!!!
Now do you have to change your name to........"I got an Alley"??2009 Summer Thunder 8 second winner
2009 Smokin in the Cove 8 second winner!
2010 Summer Thunder 8:00 #1 Qualifier
2010 Smokin in the Cove 8 Second (2nd Chance) Winner!
www.pacificpowerequip.com
http://www.jaysmithracing.com/
http://www.lucasoildragboats.com
-
07-03-2005, 08:09 PM #3Screaming And Flying!
- Join Date
- Sep 2003
- Location
- shreveport,la
- Posts
- 5,497
- Thanks (Given)
- 4
- Thanks (Received)
- 18
- Likes (Given)
- 24
- Likes (Received)
- 212
- Mentioned
- 1 Post(s)
- Tagged
- 0 Thread(s)
I'd say your getting to the limits of an unmodified CLE at your current set-up...
Kevin Kiser
-
07-03-2005, 10:55 PM #45000 RPM
- Join Date
- Jul 2001
- Location
- Tampa, FL
- Posts
- 149
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 0
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
You heard correctly. Allison published a small paperback book a few years ago called the "Red Book". In it on page 25 it states that a stock ( non modified ) CLE case has the potential to blow out at speeds above 90 MPH. Most Allison owners modify their CLE cases with a Bob's nose cone or a Tooters cone. If you have this mod done, tell them it is for an Allison. They will install the cone with a small tilt down ( 3/8" ) below the prop shaft so that the case provides more lift and also more water pressure at levels above the pad. I am running a modified CLE case on an Allison bass boat at speeds between 100 and 102 depending on water conditions.
-
07-03-2005, 11:19 PM #5
I agree
with Ted. Either the prop is running out or the CLE is nearing blowout. Cleavers don't have much bow lift so it may be the prop as well. Don't drop the throttle too hard or you are going to hook the boat hard right. Try another style prop first. Your motor height sounds ok. Blunting the nose of the CLE will help. You want to use a file and round off the nose til its about the size of your ring finger or at least your pinky instead of being so pointed at the tip. Also if you have a 4 hole CLE filling in one of the outer holes completely with epoxy can help as well. I prefer to fill the starboard side while most people like to fill the port side outer hole. You could fill both and enlarge the 2 center ones if you wanted also. There are a few other mods that can help a CLE on an Allison as well. Do a search. Main thing is that the case is so short. Best to have Tooter or Bob's cone it for you. The above tips work well on a coned case also.
-
07-04-2005, 06:59 AM #6
Just be like everybody else around here now (meaning on this lake) and run a Speedmaster and don't worry about it. Before the anti-Speedmaster hecklers chime in, we ran one on the yellow XR2002 and it worked great, and it was the little SSM with a 10" diameter blade. I think with a #4 and an 11 or 12" diameter it'd work great. Also................. I ran a #8 Speedmaster on the DR2001 Ally come to think of it.
Membership upgrade options: http://www.screamandfly.com/payments.php
-
07-04-2005, 07:34 AM #7Originally Posted by Jimbo
Can you still buy the "Tooters"cone? Where would I find one? (I've got a backup 12" lower unit that needs the cone)
Thanks!2009 Summer Thunder 8 second winner
2009 Smokin in the Cove 8 second winner!
2010 Summer Thunder 8:00 #1 Qualifier
2010 Smokin in the Cove 8 Second (2nd Chance) Winner!
www.pacificpowerequip.com
http://www.jaysmithracing.com/
http://www.lucasoildragboats.com
-
07-04-2005, 07:53 AM #8
Titus Grisham
http://www.low-h2o.com/
256-272-0500Rickracer
Sunshine Syndicate Member
There is a fine line between "hobby" and "mental illness."
[img]http:/
-
07-04-2005, 09:46 AM #95000 RPM
- Join Date
- Jan 2004
- Location
- IA
- Posts
- 684
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 1
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
lower units
I ran a stock lower unit (side water pick up) on my nitro bass boat for years. That thing would run over 100 easy, and my motor would never blow up or out. Wait a minute, that speedo was kilometers per hour--hmm---never mind.
-
07-04-2005, 09:51 AM #10
Good one
Thats a good one. LOL. Yep, you have to watch out for those 100mph Nitro boats running the Mississippi this time of year! Just run a radiator and a closed loop cooling system and you won't even need those darn water pickups ! Hehehe
-
07-04-2005, 11:28 AM #11
Allison Set up
I have had a few problems with my ally but, never found it to be the boat or set up really. I tried all different set ups, the swirly feeling at high 90's was always the prop. Now other peoples experiances may have been different. I have a XB2002 Bass Racer with a stock 225 (no rev limiter). The best wheel for me has been a 28 ET, the only down fall is they don't last very long for the money you have to give for 'em. The et spinning at 7500+ want to start cracking blades. I have had two of them do the same thing. I put down some good numbers a few passes. On any given day I can run by myself 102-104 all day long. I have run 100 with a passenger a couple times. Different days different speeds. 3/4 above the pad wit 14 inches of setback is where I'm at. My 2 cents.........try Mercs over priced ET.
-
07-04-2005, 11:49 AM #12
Try Kevin @ R&R Propshop
He can do an ET copy out of a chopper, and they work good. http://www.randrpropshop.com
Rickracer
Sunshine Syndicate Member
There is a fine line between "hobby" and "mental illness."
[img]http:/
-
07-04-2005, 02:36 PM #13
now lafit who iz you kiddin? EVERYONE knows a danged ol BR with a lowly lil duce ana qwatuh is ONLY a 89mph boat!!! What kinda mods you do to get 104?
RA"Rainy Day Woman II" 2008 Allison XB21 2+2, 2008 Merc 225 Sport XS.
"Other toy": http://s21.photobucket.com/albums/b2...54%20Chevelle/
-
07-04-2005, 02:42 PM #146000 RPM
- Join Date
- Apr 2001
- Location
- Jackson,Tenn.
- Posts
- 1,691
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 4
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
14 inch set back will do it.
Ray Neudecker Over The Hill Gang Outboard Racing
-
07-04-2005, 05:24 PM #15
Thanks for the help
Guys, thanks for the help. I'm gonna play with the set up and try to find a gearcase with a Bob's cone. Norris - chris and I have already mentioned trying the speedmaster, I think I need a better feel for the boat first so I can tell what works better or doesn't work better
You used to drive these things, I'll come by and you can show me what to do