stupid questions 1985 200 rudes

[bloodclot]

just got this boat with twin 200 85 rudes.<br />replaced waterpumps and gear lube, port motor wouldnt run had spark and 90 to 100 psi compression in all 6 cylinders checked wireing it was fine pulled flywheel it had sheered key so replaced that, now the problem is got both motors tuned and running good on earmuffs at the house had them idleing for 15 min strait water pressure was at about 5psi at idle.<br />dropped it in the water and they wouldnt idle and had about 25psi water pressure temp woudnt go over 125 deg...needless to say I never left the dock....any thoughts? if more info needed just ask, got over 2k in parts and labor into it already between the boat and trailer..........help please

 

[Hooty]

Re: stupid questions 1985 200 rudes

The temp looks o-k for idling , but idle will have to be set up because when you drop it in the water, you increase the exhaust back pressure. Engines should idle about 750 rpm in gear.<br /><br />c/6<br /><br />Hooty

 

[bloodclot]

Re: stupid questions 1985 200 rudes

thanks hooty,<br /> now i dont have the luxury of tossing it in and out of the water so I would need a test tank correct? and if so would a big garbage can work? <br />and do I keep the prop on or use a test prop? <br />and what exactly is a test prop from what I understand its a normal prop modified some way can any one explain how to do this?<br /><br />thanks in advance for ant help.

 

[bloodclot]

Re: stupid questions 1985 200 rudes

sorry there 1980's as well

 

[jim dozier]

Re: stupid questions 1985 200 rudes

I believe a test prop is just designed to put some drag on the engine without any forward or reverse thrust, it just churns the water but not in a directional way.

 

[mellowyellow]

Re: stupid questions 1985 200 rudes

you can also use a flush muffler to create<br />some backpressure.<br />M.Y.