SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: 77Hawaiian on March 12, 2012, 05:07:51 PM

Title: can you break a new cam in while boat is out of water?
Post by: 77Hawaiian on March 12, 2012, 05:07:51 PM

I just put a 284 comp cams xtreme energy cam in my 460.  My question is will a garden hose supply enough. Water to do break in procedure holding engine at 2000 rpms for half hour also will it hurt the jet I have heard many different things. Anyone actually did it?

Title: Re: can you break a new cam in while boat is out of water?
Post by: farmergord on March 12, 2012, 05:34:35 PM

I did mine on the trailer just  disconnect the drive shaft and run the garden hose but don't  turn on the water til the motors running and shut it off when you stop

Title: Re: can you break a new cam in while boat is out of water?
Post by: Ralph Brunt on March 12, 2012, 05:38:18 PM

did mine on the trailer as well, but, i turned the water on first to fill the block and check for leaks. do all checks prior to break in. you dont want to have to run around like a chicken with your head cut off trying to fix shit.

Title: Re: can you break a new cam in while boat is out of water?
Post by: TJS Nordic on March 12, 2012, 06:42:54 PM

I did several on a run in stand I made.

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.tjsperformance.com%2Fimages%2Frun_stand05.jpg&hash=0018bb28f3c0af3f42f7f47260206206c6f232e1)

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.tjsperformance.com%2Fimages%2Frun_stand07.jpg&hash=b0372ac1bcaa449bd270c44164878bbbc33381fc)

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.tjsperformance.com%2Fimages%2Frun_stand14.jpg&hash=342ee9ec51d91d5aed432cc1b9c7db0759570496)

I also did dyno this one.

Title: Re: can you break a new cam in while boat is out of water?
Post by: 77Hawaiian on March 13, 2012, 11:40:39 AM

Woooooww tjs nordic that is on bad ass set up you got very nice. I think I'm doing it on the trailer with jet unhooked thank you everyone :)

Title: Re: can you break a new cam in while boat is out of water?
Post by: lupo1904 on March 13, 2012, 05:52:57 PM

keep an eye on your temp and hope you dont mind glowing headers

Title: Re: can you break a new cam in while boat is out of water?
Post by: mash on it on March 15, 2012, 08:13:58 AM

Quote from: lupo1904 on March 13, 2012, 05:52:57 PM

keep an eye on your temp and hope you dont mind glowing headers

Why were the headers glowing? Basset T valve? Drivers seat header control (valve) would eliminate this.
Broke in last flat tappet cam going up river @ Big Bend, went about 200 +/- yards at 2000-2500 rpm, pump and headers had plenty of water   8)

Daniel
Mash on it