12" champ mid trim hose connections

[MTOLLEY]

have a caged champ trim ram. ram has 2 different size ports for trim hoses. (3/16 and 5/16) which one is the "up" port?

[patchesII]

The one closest to the transom if it sits in there the same way as a 15" ram or a hyd 12".

[MTOLLEY]

both connections are away from the transom side by side

[patchesII]

They're obviously different than the hyd 12". Sorry I couldn't help.

[Raceman]

Mike, I'm assuming you mean the earlier style champ with the ram laying down and going THROUGH the transom or jackplate (depending on how it's mounted to the boat). It's been a long time, but I think if you'll disconnect the hoses from one end or the other and pull on the mid you can feel the direction by blocking one hose or port at the time. Also, assuming you're running the early pump, wouldn't it be the same either way if you simply reverse the wiring to make the switch work right? I remember a long time ago gettin' to a race with my 16 Ally and the trim was leaking down and we ran to Napa and bought a couple of fittings and reversed the hoses (and the wires) so the other side would be the "up" and it would hold for the day.

[MTOLLEY]

raceman, not sure of the year of the mid. i beleive its an 8bolt that was modified for a big tuner(the sides have bee welded smooth and use studs in the midddle part of the can) the trim ram is mounted to a cage that fits between the jackplate and transom. the first time i hooked it up and hit the "up" button it trimmed down. we ran a different 12" mid on the boat last year and everything was working fine, but with the new setup, it wont trim instantly under power(even with 24v) but has a "lag time" that i dont much like. im thinking that the "up" side needs the pressure (3/16") and not the volume of the 5/16" side. today im going to move the hoses and necasarry wiring and try again. also running a bob's pump(has the plastic tank)

[jphii]

You gonna be ready this weekend?

[MTOLLEY]

itll be ready

[patchesII]

I've heard of a couple 12" mids that either have a lag fully tucked or just get stuck down there. I had a Bob's pump on my boat last year that just wouldn't trim fast enough under power. I bought one of the faster Mercruiser pumps and it was a world of difference in the way the boat left. Don't be surprised if you have to replace that pump. Also you can't just swap the lines at the pump to change direction. It has an up side and a down side

[Raceman]

I've heard of a couple 12" mids that either have a lag fully tucked or just get stuck down there. I had a Bob's pump on my boat last year that just wouldn't trim fast enough under power. I bought one of the faster Mercruiser pumps and it was a world of difference in the way the boat left. Don't be surprised if you have to replace that pump. Also you can't just swap the lines at the pump to change direction. It has an up side and a down side

I don't know about the Bob's pumps, but I've run both Mercruiser pumps and the old style Merc outboard pumps with 4 lines and plugs in two of 'em. The Bobs MAY BE the problem with the lag or speed. In the case of the Merc stuff that I've run you CAN run the hoses in either direction. The only problem I ever had doing it was that brass adapters were the only ones I could find at the time and I had 'em split and leak a couple of times from the hyd. pressure. Stainless or regular steel would've solved it, but never went to the trouble.

[patchesII]

The up side of the pump has more pressure to overcome the thrust of the motor.

[MTOLLEY]

i took the lines loose today and lifted the engine by the cav. plate. the small side shot fluid out while i lifted and could hear the large side sucking. that tells me that the small side is the down trim and the larger the up trim. triple checked the hose connections and they are correct at the pump as is the wiring. what gets me is it wont trim even on 24 volts under full throttle instantly but goes in spurts. 12 volt wont trim period under full throttle. i may just change the pump in the morning and see if it makes a difference. i would think they would use a small diamater hose on the up side for the pressure. i didnt look in the port on that side today and see what size the opening is but the thread size of the port is for 5/16 flare. it may be some bastard size nut on 3/16 tubing ill see in the morning. keep the ideas coming. theres got to be some of you champ boat guys that know! lol!

[COMPRECBRKR]

mottley , they always used 2 small hoses with a adaptor in the large hole in the cyl. they did not have the new style pumps at that time .the old style pumps had 2 small holes , will check back when i get home , cheers lee .

[patchesII]

Same problem I had with the Bob's pump. I had to put 2.3 seconds of run time in the the timer to get it to trim where it was supposed to. Doubtful it would've trimmed at all on 12v. Replaced it with one of the fastest Mercruiser pumps and took over a second off the run time and like I said the boat just felt tons better leaving. Sitting on the trailer there was only a tenth difference in trimming the full range, 0.9 seconds with the Mercruiser and 1.0 seconds with the Bob's. Add the thrust of the motor with a 22 on it and the difference was huge. That was with a short ram 15". I'm just about to wrap up my conversion to the 12" mid. I may go finish wiring up the trim timer and let you know how long it takes to trim the full range on the trailer

[MTOLLEY]

this one on the trailer will trim it to nuetral trim in .150 seconds on the timer. running i had to put six seconds in it to do anything. using the trim switches the 1/4 mile was about over when the boat free'd up. ill check that fitting in the A.M. i have a pump i can borrow that never had an issue trimming a 15" short ram 280 on a mirage ski racer with any size wheel on 12 volts. this pump wouldnt trim last year fast enough on 12v but never had an issue on 24v. i changed mids over the winter( had 12" before but this one is newer) and now i have issues three days before the race!

[COMPRECBRKR]

mtolley , the fitting that was used is a fairview WH-7909 .cheers lee .