Jump to content

Welcome to TheMalibuCrew!

As a guest, you are welcome to poke around and view the majority of the content that we have to offer, but in order to post, search, contact members, and get full use out of the website you will need to Register for an Account. It's free and it's easy, so don't hesitate to join the TheMalibuCrew Family today!

Sign in to follow this  
lib135

Top Speed reduced down to 42 MPH

Recommended Posts

lib135

My 23 LSV with the 383 HH, seems to only be reaching a top speed of 42 MPH with the stock prop (537 i think) @ 4700 RPM. It used to top out around 50 MPH at about 5200 RPM. Any ideas why my performance has dropped? Only changes I have made are switching from 15W40 Oil to straight 50w oil at the recommendation of Indmar., to solve the burning up oil issue I was having. Any insight would be great. Thanks!

Share this post


Link to post
UWSkier

sounds like you have some engine problems if you're burning oil and experiencing poor performance. They're likely related.

Share this post


Link to post
1FootDan

Did you happen to change the plugs? I had a similar problem when I switched the #2 and #4 wires by accident...

Share this post


Link to post
lib135

haven't done anything with plugs or wires. Malibu released a service bulletin last year to switch oil yes which has solved the oil issue..

Share this post


Link to post
srud

I am not trying to be a wise guy, but are you sure the top speed has changed? Is there any chance that someone messed with the speedometer adjustment? Have you ever calibrated with a GPS? I'll admit that 42 sounds a little low for HH with the stock prop, but at the same time, 50 sounds fast to me, even for a HH. I'd also take a real close look at your prop. There is a chance you hit a piece of wood or something and bent one of the blades slightly. Good luck and please let us know if you figure it out...

Share this post


Link to post
Johnny_Ringo

8 mph and 500 rpm difference. It could be the conditions. Remember when it's very hot the air is less dense. There is not the same amount of O2 in the same amount of volume of air going into your power plant. It should run strong on cold dry days and a little less strong on hot humid days.

Share this post


Link to post
footnlongline
Plus1.gif
8 mph and 500 rpm difference. It could be the conditions. Remember when it's very hot the air is less dense. There is not the same amount of O2 in the same amount of volume of air going into your power plant. It should run strong on cold dry days and a little less strong on hot humid days.

Share this post


Link to post
Surfin247
Plus1.gif
8 mph and 500 rpm difference. It could be the conditions. Remember when it's very hot the air is less dense. There is not the same amount of O2 in the same amount of volume of air going into your power plant. It should run strong on cold dry days and a little less strong on hot humid days.

Florida in the summer. Cry.gif

Share this post


Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...