|
1998 70hp Johnson on Montauk prop
|
| scottfarm |
Posted on 03/04/12 - 1:29 PM
|
Member
Personal Page
Posts: 18
Comments:
0
Joined: 11/30/07
|
I have a 1987 Montauk with a 1998 70hp Johnson. My engine is raised on the transom as high as I can get it without cavitating. I need a new prop. From all the reading I've done the consensus is I need a Stilleto 13.25 X 15. Could I use a 17 pitch since I have my motor raised so high. I have a 28 gallon tank and my wife as a passenger and sometimes a bait tank. Does Tom Clark still sell these props and if so for what price? Thanks a million Dennis
Edited by scottfarm on 03/04/12 - 1:30 PM
1987 Montauk with 1998 70 hp Johnson. Garmin 545s |
| |
|
|
| Joe Kriz |
Posted on 03/04/12 - 1:33 PM
|
Site Owner
Personal Page
Personal Album
Photo Albums
Project Albums
Posts: 11447
Comments:
452
Joined: 03/18/05
|
How high is "High" ????
Please tell us which hole the bolts go through on the engine mounting bracket according to this diagram.
http://www.whalercentral.com/articles...cle_id=106
|
| |
|
|
| scottfarm |
Posted on 03/04/12 - 1:39 PM
|
Member
Personal Page
Posts: 18
Comments:
0
Joined: 11/30/07
|
Two Holes Up (bolt in third hole)
1987 Montauk with 1998 70 hp Johnson. Garmin 545s |
| |
|
|
| scottfarm |
Posted on 03/05/12 - 6:15 AM
|
Member
Personal Page
Posts: 18
Comments:
0
Joined: 11/30/07
|
What about a Powertech 13 3/4 X 15?
1987 Montauk with 1998 70 hp Johnson. Garmin 545s |
| |
|
|
| tedious |
Posted on 03/05/12 - 6:45 AM
|
Member
Personal Page
Posts: 1072
Comments:
2
Joined: 09/07/08
|
scottfarm wrote:
I have a 1987 Montauk with a 1998 70hp Johnson. My engine is raised on the transom as high as I can get it without cavitating. I need a new prop. From all the reading I've done the consensus is I need a Stilleto 13.25 X 15. Could I use a 17 pitch since I have my motor raised so high. I have a 28 gallon tank and my wife as a passenger and sometimes a bait tank. Does Tom Clark still sell these props and if so for what price? Thanks a million Dennis
No, you shouldn't go with a 17-pitch unless you always run very light and are primarily interested in absolute top speed on flat water - you'd be giving up quickness to plane and you might even have overheating problems when running loaded. You really want the WOT to be right up around 6K for proper cooling. The Stilletto 13.25x17 / 70 combination is great on a 15, but for a Montauk you want the 15 pitch.
I don't know if Tom is still in the prop business, but Dan's Discount Props is also good.
Tim
|
| |
|
|
| scottfarm |
Posted on 03/05/12 - 10:21 AM
|
Member
Personal Page
Posts: 18
Comments:
0
Joined: 11/30/07
|
Thanks man, That's the cheapest site I have found for props.
1987 Montauk with 1998 70 hp Johnson. Garmin 545s |
| |
|
|
| Tom W Clark |
Posted on 03/05/12 - 5:32 PM
|
Member
Personal Page
Posts: 4280
Comments:
7
Joined: 09/30/05
|
Dennis - I agree, the 13-1/4" x 15" Stiletto Advantage will be the best fit for your 1998 Johnson 70 with its 6000 RPM reline and 2.42:1 gear ratio. $250 delivered to your door with hub kit included.
|
| |
|
|
| dgoodhue |
Posted on 03/05/12 - 5:33 PM
|
Member
Posts: 278
Comments:
0
Joined: 10/04/05
|
With a Stilletto you maybe able to raise the engine another. I agree that 13 1/4 x 15p is the correct prop for your application.
BTW I would contact directly about buying a stiletto prop.
Dave |
| |
|
