power head replaced cant get timing right

[NOSLEEP]

good day gentleman<br />replaced 1985 120 vro evinrude p/head<br />marine rebuilder replaced with 1995 130 evinrude<br />p/head. all parts from 85 p/head went on new 95 p/head. maximim w.o.t timing i can get is 18 deg<br />with adjustment screw backed of as far as it will go. i am static timing and have alowed for 4deg when timing and not runnig. is it possible that parts from 85 p/head are different than parts required for 95 p/head ie:flywheel or powerpack. engine ran excellent before replacement and timing was at 22 deg.the marine shop says he knows of no differance between two engines. however some thing has to be out of wack. i replaced fly wheel key, and can find no problem with flywheel every thing looks great. engine runs but timing worries me. any ideas!!

 

[NOSLEEP]

Re: power head replaced cant get timing right

SORRY ABOUT THAT JUST WANTED A BUMP

 

[clanton]

Re: power head replaced cant get timing right

Did you verifiy that top dead center pointer is in correct position. The upper bearing housing that has the threaded boss for the max timing screw, and the max timing screw for the 130 has a different part number then the 120. This may be a problem. Small magnet inside flywheel may have moved, if so the idle timing would be off. Did you check idle timimg?

 

[seahorse5]

Re: power head replaced cant get timing right

The '85 ignition system is different than the '95 version. The '95 uses a different flywheel that has the inner timing magnet in a different location. The polarity of the ignition systems are opposite, also. The crankshaft spline area on the '95 has an oring inside the crank to seal the grease in. A different driveshaft than your '85 is needed to work right.<br /><br />You may have more problems than you realize by using different powerheads.

 

[Joe Reeves]

Re: power head replaced cant get timing right

NoSleep..... With no intentions of insulting your intelligence, are you using the proper spark plug lead for the timing light (#1)?<br /><br />Standing in back of the engine, facing the engine, that would be the top plug wire on your right (top starboard cyl). Do you have the proper primary coil wire leading to #1 coil (orange/blue)?

 

[chumbucket]

Re: power head replaced cant get timing right

Joe, You be the man!!!!!!!!!!!

 

[NOSLEEP]

Re: power head replaced cant get timing right

clanton<br />tdc pointer was in wrong position i made small adjustment about 2 deg. now timing adj screw can be turned in slightly about three turns. maybe will be alright now, how do you check idle timing and what should it be. thanx

 

[NOSLEEP]

Re: power head replaced cant get timing right

joe orange and blue wire does lead to #1<br />yes i am timing on correct cyl thanx joe !

 

[NOSLEEP]

Re: power head replaced cant get timing right

seahorse, marine rebuilder says crank in 95 p/head is from older engine .only block is newer looper ,he said all parts should be interchangable, timing screw holder came with engine. looks same as was on 85 p/head, thanx

 

[93bronco]

Re: power head replaced cant get timing right

finally at last someone else has the same problem with a would be mechanic swapping parts on a 120 to 140 loopvee. just a word of advice you cannot get pushy with anyone on this site cause you will be as us old retired navy guys put it "black listed" from anyone with knowledge that can help you with responding. the site it self is great and doesnt do that. but the ones that can help will ignore you <thats what i mean> ill give you my history. i bought a 92 120 that apparently has been pieced together still cant get but 3200 out of it. new power pac, rebuilt carbs, thermostates and overall ignition check. hundreds of $$$$ later still same. the person i got it from wont tell me what i got , i know ive eliminated a 94,93,92,91 & 90. i picked the motor because of all the good things ive heard of it especially from old threads on this site. so its not the motor just the person who claimed to be qualified to put it together thinking that all parts would work together regardless of year. so i can simpathize with you and understand your frustration when you seek help and no one answers. i would be more than happy to scan the lync and sync portion retaining to timing of a 1990 120 to 140 out of the omc manual i have and mail them to you. thanx for your ear.

 

[clanton]

Re: power head replaced cant get timing right

I can also try a scan for the sync&link, if you dont get it from 2Kboat. You set the idle tiiming when you do the link&sync. If you have trouble setting the idle timming and the idle of the engine, there was a kit with Service Bulletin to upgrade the linkage. If you can get the old block, put it beside the new block and check the timming screw boss on the bearing housing.<br /><br />2KBoat if I remember the port and starboard pistons are different, may be pistons in wrong hole.<br /> The problems that both of you have is common with rebuildt powerheads.I will never install a rebuildt powerhead, unless it comes from OEM factory. Maby from DHadley or Capt Ken.

 

[clanton]

Re: power head replaced cant get timing right

2KBoat, how are you doing the final check on the max timming?

 

[93bronco]

Re: power head replaced cant get timing right

ill tell you its been a nitemare. couldnt even get omc to tell me what this carb# 398368 went to. the only thing they said was it doesnt belong to a 92 120tx. started the other day after carbs were rebuilt and ran bad. had a coil going in and out abd connection.cleaned them all them all checked with timing lite all good spark. still ran bad. started to rain so took a quick video of everything to view. well after looking at video and reading my other 94 manual and comparing to the 90 manual come to the conclusion that the primer lever is in the wrong position <pointing down> but this is after the shop said ready to hit water <not> am so glad ive been laid up by this old spine surgery cause i wouldve been really upset if i got it to the waterlike that. anyway the shop didnt even check the jets on the carb either so ive jetted it to a 1990 120 . but still cant get an answer on the carbs and what they go to. so dont even know if they are v6 or v8. and maybe by chance they could be a v4 set. so i know the idle is at 6 <8 is correct> but i asked for 6 for break in. but found out yesterday that , that was done on muffs at the shop. <morons> 20yrs experience omc. should know better.

 

[93bronco]

Re: power head replaced cant get timing right

nosleep didnt turn this into my own thread sorry if it came out that way or it looks like that. will start own topic "120 to 140 loop vee carbs"

 

[NOSLEEP]

Re: power head replaced cant get timing right

hello 2k boat<br />i think i have my timing problem fixed. checked the timing with a fairly elaborate timing light i had borrowed, it had an advancement setting on it that i had not resset. i am told every thing is the same on those loopers from stroke to bore size. i cant put my boat in the water as all is frozen now . and i have my ice auger out now.<br />i will have to wait for spring to try my handy work out. but seems to run good on the muffs.

 

[NOSLEEP]

Re: power head replaced cant get timing right

2k boat i think you may be right about some off the smart guys not liking pushy typers. i would think if i had proper typing edicate i would of had a few more replys.i dont want to offend any one out there. seems i did try to be polite gust doesnt show up in the typing . you know its not what you say, its how you say it that counts ,i think some of the sincerity gets lost in the key board as their is no volume or tone control.

 

[93bronco]

Re: power head replaced cant get timing right

if you dont have the info and want it for future let me know i will give you my email address or just give me you address here. thanx i think i beat them down harder than you last year when i had surgery. bunch of great guys who deserve and want respect for their knowledge at the price of keeping you hanging if need be.

 

[NOSLEEP]

Re: power head replaced cant get timing right

2k boat i do have a omc manual for the loopers to 1990. but the new p/head is 95 130 looper. the marine shop i got the powerhead from talked to omc/bombardie shop and allparts are interchangeable on v4 looper. so hopefully i will have nomore timing problem thanx for the offer. have you got your carb problems handled?

 

[93bronco]

Re: power head replaced cant get timing right

no i posted a new topic on my carbs, didnt want to use your thread. but if you do have a 95 130 powerhead bare and used all the 85 stuff, take into cosideration that the 85 had a smaller bore size which would affect carb jetting on the bigger bore 130. 3.5 for the 1985 and 3.68 for the 130. and then if it was bored over that, well are the jetting of the 85 going to be compatible to make it run smooth and proper. something to think about.

 

[NOSLEEP]

Re: power head replaced cant get timing right

2k boat i hope i have the right info, wont know until i put it back in the water for sure.<br />they tell me only difference is carbs, i could turn my p/head into 130 by putting 130 carbs on it in replacement of the 120 carbs. i have a freind who owns a outboard recycling yard on the coast he tells me today on the phone that he could send me out carbs from 130p/head and they would work fine. same goes for 140 p/head. hope he is right. my old p/head had 30 over pistons. it didnt affect the way it ran.he says you can even punch out just one piston and it will still run ok. only engines you can do that on he says. may be he can help you with your problem, i will call him tommorrow after i re read your post,maybe he can help