4x4Wire Trail Talk Forums: Jeep, Toyota, Mitsubishi, Pajero, Isuzu, Kia, 4WD, 4x4, SUV, Off-Road and OutdoorWire Forums

4x4Wire TrailTalk Forums Index

You are not logged in. [Login] Main Index · Search · Active Topics
New user · Who's Online · FAQ · Calendar

Off Topic Chat >> Off-Topic Chat
Previous thread Previous   View all threads Index   Next thread Next   Flat Mode Flat  

FrankR
Web Wheeler


Reged: 02/01/04
Posts: 10225
Loc: Columbia, SC
Re: IT'S FAST. REALLY, REALLY FAST
      07/01/12 08:57 PM

I once had a 20' Bertram that was a very heavy boat after I rebuilt it with a full enclosure and large fuel capacity - probably 4,500 lbs of very deep-V. It originally came with a 250cid L-6 Chevrolet engine coupled to an old Mercruiser drive. I replaced the engine with a long stroke 292cid L-6 (truck and bus engine) and modified the mounting and made a custom scatter shield and exhaust to fit it to a Gen1 Alpha I. I have forgotten the diameter prop I used, but after getting too much slippage with a 13.75" I replaced it with at least a 14" diameter (I think it was a 16" diameter) and it made a world of difference in the ability to use the huge amount of torque in that engine. Top end was slightly sacrificed, but the boat would cruise offshore in a heavy sea almost effortlessly at whatever rpm I wanted and with zero bog in following seas. The Alpha I is tougher than you might think. I had 1.65 gears in that one and always wanted to change it to 1.50 to see if it would run faster with even more prop pitch and still have the same guts - I think it would have been perfect because I never thought I was using all of the torque, but I never got around to making the gear change. You might want to look into your gear ratio, too.

Frank

Post Extras Print Post   Remind Me!     Notify Moderator


Entire topic
Subject Posted by Posted on
* IT'S FAST. REALLY, REALLY FAST fasteddy 07/01/12 09:08 AM
. * * Re: IT'S FAST. REALLY, REALLY FAST FrankR   07/01/12 06:10 PM
. * * Re: IT'S FAST. REALLY, REALLY FAST fasteddy   07/01/12 07:40 PM
. * * Re: IT'S FAST. REALLY, REALLY FAST FrankR   07/01/12 08:57 PM
. * * Re: IT'S FAST. REALLY, REALLY FAST fasteddy   07/01/12 10:40 PM
. * * Re: IT'S FAST. REALLY, REALLY FAST FrankR   07/02/12 06:10 AM
. * * Re: IT'S FAST. REALLY, REALLY FAST fasteddy   07/02/12 08:41 PM

Extra information
0 registered and 1 anonymous users are browsing this forum.

Moderator:  52degrees, LandRaider, Adam F, kewlynx, Axe Man 



Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Thread views: 541

Rate this thread

Jump to
4x4Wire.com | OutdoorWire | MUIRNet News | 4x4Voice | 4x4Wire on FaceBook
About 4x4Wire | Advertiser's Guide |
This site and all original materials contained herein are Copyright 1999 - 2013 by OutdoorWire, Inc. -- All Rights Reserved.
The use of this website, OutdoorWire, or any of its publications or services is subject to the terms of use agreement.
You may link freely to this site, but no further use is allowed without the express written permission of the owner of this material.
All corporate trademarks are the property of their respective owners.
This publication and OutdoorWire, Inc. assume no liability for your use of the material contained within this site.
OutdoorWire, 4x4Wire, SUVWire, JeepWire, MUIRNet-News, and 4x4Voice are all trademarks and publications of OutdoorWire, Inc.

Contact 4x4Wire | Privacy statement 4x4Wire TrailTalk Forums

Powered by UBB.threads™ 6.5.5

Generated in 0.012 seconds in which 0.004 seconds were spent on a total of 11 queries. Zlib compression enabled.