SoCal Jet Boats

Tech Talk => Jet Pumps => Topic started by: flames on June 24, 2018, 04:25:21 PM

Title: JF pump cavatating
Post by: flames on June 24, 2018, 04:25:21 PM

I just had my motor rebuild and added some power it’s a full roller460 punched 60 over with dove heads. The problem is my stock JF pump cavatats now on take off the pump has very few hours on it and has a A impeller. Any suggestions or answers will help. Thanks


Sent from my iPhone using SoCal Jet Boats mobile app (http://r.tapatalk.com/byo?rid=201)

Title: Re: JF pump cavatating
Post by: knotonduty on June 24, 2018, 07:13:21 PM

Prob should have it rebuilt. Just had mine done at D1performance Dane Fetherhoff.


Sent from my iPhone using SoCal Jet Boats

Title: Re: JF pump cavatating
Post by: MillerKiller510 on June 24, 2018, 08:12:18 PM

How big is your boat

Sent from my SM-G955U using SoCal Jet Boats mobile app (http://r.tapatalk.com/byo?rid=201)

Title: Re: JF pump cavatating
Post by: flames on June 25, 2018, 05:40:32 AM

Quote from: MillerKiller510 on June 24, 2018, 08:12:18 PM

How big is your boat

Sent from my SM-G955U using SoCal Jet Boats mobile app (http://r.tapatalk.com/byo?rid=201)

It is a 21 mini day cruiser


Sent from my iPhone using SoCal Jet Boats mobile app (http://r.tapatalk.com/byo?rid=201)

Title: Re: JF pump cavatating
Post by: flames on June 25, 2018, 05:41:06 AM

Quote from: knotonduty on June 24, 2018, 07:13:21 PM

Prob should have it rebuilt. Just had mine done at D1performance Dane Fetherhoff.


Sent from my iPhone using SoCal Jet Boats

I had it rebuilt a couple summers ago


Sent from my iPhone using SoCal Jet Boats mobile app (http://r.tapatalk.com/byo?rid=201)

Title: Re: JF pump cavatating
Post by: mash on it on June 27, 2018, 08:11:43 AM

Just one rock ding can cause it to cavatate.
Let alone weeds, fishing line, ski rope, etc.

Once I had a grape sized rock stuck between the vanes of the impeller, that cavatated like a bitch, and the pump was weeks old.

Pull the pump apart and take a look.


Dan'l