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-   -   Cam change with motor still in boat (https://www.offshoreonly.com/forums/general-q/93317-cam-change-motor-still-boat.html)

squick 12-28-2004 04:06 PM

Re: Cam change with motor still in boat
 
Powerguy......you've got mail

RonS 12-28-2004 06:01 PM

Re: Cam change with motor still in boat
 
Power guy, just pull the motors, start to finish both motors can be out in 4 hours, it's a pretty easy job to do.

Did you ever try the hydromotives on your boat, and if you did how did it run.

powerguy 12-28-2004 09:08 PM

Re: Cam change with motor still in boat
 

Originally Posted by WETTE VETTE
Just put a 177 blower and a Nickerson carb on it and go!! The 454 mag has a great base for a small blower and that will net you more power than head porting and minor cam changes, and it will be cheaper! I am not even a big blower fan, but I have seen this work and work well more than once. If you are sold on the new cam, head porting, intake, and exhaust it can be done in the boat, but is easier on the engine stand!

Good Luck!

Craig

Don't you need to change exhaust valves, change head gaskets, decrease compression, add fuel pressure and oil temp gauges?

powerguy 12-28-2004 09:09 PM

Re: Cam change with motor still in boat
 

Originally Posted by RonS
Power guy, just pull the motors, start to finish both motors can be out in 4 hours, it's a pretty easy job to do.

Did you ever try the hydromotives on your boat, and if you did how did it run.

Ron - never ran the 22 hydro's last year.

offthefront 12-28-2004 10:59 PM

Re: Cam change with motor still in boat
 
Worst part about doing the job in the boat is having to get in/out of the boat a million times and parts and tools everywhere and wear and tear on the boat ...

WETTE VETTE 12-29-2004 07:15 AM

Re: Cam change with motor still in boat
 
Those are good questions about going blower. I know there are many bolt-on kits out there from Pro-Charger, Whipple, Vortech and roots type of blowers. Most of these kits are designed for stock type motors and while the changes you mentioned wouldn't hurt I don't think they are all required. As for the oil temp and fuel pressure guages I personally believe those should be standard equipment on every marine engine. A buddy of mine had a 242 Eliminator Vee with a 454 Mag carb and added the Weiand 177 blower and the appropriate carb. He gained tons of mid range and 8 MPH on top end. He then added some gil manifolds and picked up another 2 MPH. The motor ran great for 4-5 seasons until he sold the boat. Easy, cheap and very effective. If you are open to the idea it is worth looking into!!

Craig

GLH 12-29-2004 01:22 PM

Re: Cam change with motor still in boat
 

Originally Posted by powerguy
Hey G.L - You having experience the past couple of years pulling motors what are your thoughts on the subject?

I don't know how much time but the charge was around $400-$450 in and out and they had to take the hatch off. I'd say an hour or so out and a solide couple in, woth a few guys working on it (2-3)

powerguy 12-29-2004 01:37 PM

Re: Cam change with motor still in boat
 

Originally Posted by GLH
I don't know how much time but the charge was around $400-$450 in and out and they had to take the hatch off. I'd say an hour or so out and a solide couple in, woth a few guys working on it (2-3)

Seems like I should wait to completely rebuild the motors before removing them. I guess that I will have to stay in the Under 70 mph group.......


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