Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > Vintage RV's
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Thread Tools Search this Thread Display Modes
Old 02-03-2011, 10:23 PM   #1
Junior Member
Join Date: Feb 2011
Posts: 2
Question water/alcohol injection on 454 v8 carb

I have a 1989 chevy 454 in a Fleetwood Southwind. I just got it and am trying to improve engine power and economy. I've read a lot about water/alcohol injection, all positive. But a carp rebuild specialist (Cliff's performance shop; reccomended by some of you on 454 thread) says No.
Have any of you had any experience with it?

Thanks Folks!

billhardy is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 02-04-2011, 05:37 AM   #2
Registered User

Monaco Owners Club
Join Date: May 2009
Posts: 3,198
Injecting water into a running engine will not improve power or economy.
If the engine is prone to pinging (spark knock) it will get rid of that.

JimM68 is offline   Reply With Quote
Old 02-04-2011, 07:36 AM   #3
Junior Member
Join Date: Jan 2011
Posts: 9
Not sure what your trying to accomplish here- do you have some knocking or pinging you are trying to remediate?
GM makes a "Top Engine" cleaner that when used can help with this, also I have used "SeaFoam" which you can get at Autozone with good results. Both of these get administered thru the card or a vacuum line. Good luck.

jwvette77 is offline   Reply With Quote
Old 02-04-2011, 08:21 AM   #4
Senior Member
Join Date: Sep 2007
Location: texas
Posts: 2,225
it will only help for pinging back in the late 70's i had a 1970 chalenger with a 440 the compression was high i added water injection it was vacuum operated. my southwind 454 gets 8 mpg pulling a 4 door chevy truck (thanks to Jim's distrubitor mod)
whem2fish is offline   Reply With Quote
Old 02-04-2011, 09:24 AM   #5
Senior Member
Vintage RV Owners Club
Join Date: Jul 2010
Posts: 218
Bill, start reading Jim E's post and do what he explains. these engines need to be hot rodded, that's what they like the best.

John & Colleen Weston & Cassie(our cat) -Olympia,WA
1978 GMC Midas Class A 30FT-454 Engine, 400 T
Outlaw45 is offline   Reply With Quote
Old 02-04-2011, 09:32 AM   #6
Senior Member
Wanabee FTer's Avatar
Gulf Streamers Club
Ford Super Duty Owner
Join Date: Jul 2010
Location: Golden Village Palms, CA
Posts: 1,988
Blog Entries: 12
Many years ago I purchased a Holly water injection unit for a Chevy 350. Tried to use it one time and removed it. Junk!
'98 Gulf Stream Sunsport 325, 7.5L Banks Power Pack, Koni FSD's, Air Bags, ReadyBrute Elite,
2000 Honda Accord

Wanabee FTer is offline   Reply With Quote
Old 02-05-2011, 09:01 AM   #7
Junior Member
Join Date: Feb 2011
Posts: 2
Gentlemen, thanks for your advice. I'm convinced I don't want to do it. I had been told(by people who sell them) that they would increase power, and make your engine run cooler. Thanks again, you've saved a lot of money.
Bill Hardy
billhardy is offline   Reply With Quote
Old 02-14-2011, 09:34 PM   #8
Senior Member
Hoverbug's Avatar
Vintage RV Owners Club
Ford Super Duty Owner
Join Date: May 2001
Location: Klamath Falls, Oregon (The right side of the Cascades and home of Crater Lake)
Posts: 854
Bill I have an '87 GMC Suburban with a 454. I am a believe in Marvel Mystery Oil. Been using it for years and get good mileage and good performance. 105k plus and no mechanical issues at all.
Klamath Falls, Oregon:The Right Side Of The Cascades!
1990 Rexhall Airex 29I,Ford 460cid,Gear Vendor,Granning Tag Axel
'87 GMC Suburban 2500 W/454 CID
Hoverbug is offline   Reply With Quote
Old 02-16-2011, 02:45 AM   #9
BobKomar's Avatar
Fleetwood Owners Club
Join Date: Feb 2011
Posts: 78
A water/alky mix is used mostly in aftermarket boost set ups to keep things from detonating at high boost and melting down.

BobKomar is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
454 Chevy engine questions, bringing back an Elandan padraig1066 Vintage RV's 23 05-04-2010 12:04 PM
Fuel PSI range to carb on GM 454 Gary - K7GLD Vintage RV's 13 04-04-2010 09:31 PM
Pre-workhorse 454 engine needs help DaveFL Workhorse and Chevrolet Chassis Motorhome Forum 19 01-21-2010 07:48 AM
1985 Allegro Chevy 454 Starting problems FlyLikeABand MH-General Discussions & Problems 7 07-12-2009 10:51 PM
454 original air cleaner Plaser007 Vintage RV's 6 07-30-2007 08:18 PM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:10 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.