89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing question

[section8]

the title says it all. anyone got ideas on adjusting this things fuel air mix. also gonna time it this week as per the manuals instructions. any tips on that would help too. do i really need to go .462 degrees back from tdc with a dial gauge and put the arrow there or can i just skip that and get to the timing light and adjuster screws? dont own a dial gauge. any help helps and thanx a million. tryin to get on the lake! lci derby this weekend!

 

[j_martin]

Re: 89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing ques

Mixture is preset by the jets. There are no mixture screws on WH(nn) carbs. Linkage and timing adjustments are the difference between a well oiled machine and a dog, or worse yet a bomb.

Do as you wish.

John

 

[section8]

Re: 89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing ques

hey j martin. does that do as you wish part mean its a bad idea to not use the dial gauge? my local parts stores dont have them so i need to order 1. its just that i assume the arrow was pointing there to begin with and you may say" you dont need to do that part cuz the light such and such etc. i would rather do a good timing job than do as i wish. im getting the nice timing light with the digital degree reading and the tach cuz my boat dont have a tach so saving the money on a dial gauge and the week til it gets here helps. thanx j martin. your always incredibly helpful

 

[j_martin]

Re: 89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing ques

By your original post, i deduced that you don't even know what the carb on this thing looks like.

How long have you owned the motor?
Did the last owner, or "mechanic" that messed with this thing know what he was doing?
What are the odds the pointer is in the right location?
What odds do you want to take on the bomb bit?

I have one in the yard now that should run like a scalded dog. The owner said it never has, but takes about 15 - 20 seconds to get on plane.

When I checked it out I found.
1. At a glance, the linkage is off at least 15?.
2. The oil alert is dead. (owner didn't even know it had one)
3. Wrong lube in the LU

Amazingly, it isn't hurt too bad yet, but I think the owner will think I put a 200 powerhead on his 135 when he next runs it.

Do you think I'm going to time it assuming the pointer is in the right place?

A cheap Chinese (harbor freight or Menards) dial caliper can be used for the depth gauge.

hope it helps
John

 

[Gomer50]

Re: 89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing ques

A $20.00 dial guage from harbor frieght can save you alot of money and the famous phrase (Damn I shoulda done that right the first time)..

 

[1nebel0]

Re: 89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing ques

Invest in a dial indicator..While there are ways to get around this, Martin for sure knows that piece but from your post you don't or won't...JSRE sells a beautiful indicator for around $75.00 I live by the creed buy a quality tool once..While harbor freight has great prices on some disposable things, this is one that you want a precise tool and not some p.o.s.....

 

[Gomer50]

Re: 89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing ques

I was real curious So I went to go look at what JSRE has.Well they sell the same Damn dial indicator as harbor frieght for 20 bucks more + shipping.The only difference is it has the threaded part for the spark plug.Made in China same P.O.S. Used mine from Harbor Frieght twice in 3 years to set .464 BTC timing pointer.Still works and looks just like I bought it yesterday with brass threaded fitting.

 

[j_martin]

Re: 89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing ques

As long as you can measure the stroke of the piston within a thou or two, you'll be just fine. The reason for the particular measurement to determine flywheel position is that it minimizes the effect of any error. Trig it out and you'll see what I mean. If you don't know what that means, just follow instructions, yer in over your head.

 

[section8]

Re: 89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing ques

well ive never timed anything before. i have rebuilt the carbs, fuel diaphragm kit, reeds, new head gaskets and water jacket gaskets, exhaust plate divider gaskets(twice) oil injector bypassed, lifted the powerhead and replaced midleg gaskets and o ring. put on a new lower unit and a new water pump in that. replaced the hoses and siphoned water/fuel out of the gas tank. replaced poppet and thermostats (with washers). have good compression across. still getting water on plugs! the only thing i havent done is split the crankcase at the crankshaft although i did replace the lower crankshaft seals. adding to that a timing light and dial gauge just to spend weekends with water muffs shooting water on my shoes isnt what i thought i was getting into. i wish i had a j martin near me but all the marinas i have been to suck and put the new guy on my boat to learn and they dont check the new guys work before sending me on the lake to have the throttle control fall of and no oil res. etc. also no harbor freight within 3 hours drive for me. going broke and discouraged all while not boating. i hope you understand the frustration and hopes that i can save a few bucks and another week of an already short 3 month vermont summer since my book says a light negates the need for a gauge since its blinking to tell me and since im getting the digital one that says the degree regardless of where i move the pointer but i dont know so just wanted some help. thanx. ill order that dial gauge now.

 

[section8]

Re: 89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing ques

well ive never timed anything before. i have rebuilt the carbs, fuel diaphragm kit, reeds, new head gaskets and water jacket gaskets, exhaust plate divider gaskets(twice) oil injector bypassed, lifted the powerhead and replaced midleg gaskets and o ring. put on a new lower unit and a new water pump in that. replaced the hoses and siphoned water/fuel out of the gas tank. replaced poppet and thermostats (with washers). have good compression across. still getting water on plugs! the only thing i havent done is split the crankcase at the crankshaft although i did replace the lower crankshaft seals. adding to that a timing light and dial gauge just to spend weekends with water muffs shooting water on my shoes isnt what i thought i was getting into. i wish i had a j martin near me but all the marinas i have been to suck and put the new guy on my boat to learn and they dont check the new guys work before sending me on the lake to have the throttle control fall of and no oil res. etc. also no harbor freight within 3 hours drive for me. going broke and discouraged all while not boating. i hope you understand the frustration and hopes that i can save a few bucks and another week of an already short 3 month vermont summer since my book says a light negates the need for a gauge since its blinking to tell me and since im getting the digital one that says the degree regardless of where i move the pointer but i dont know so just wanted some help. thanx. ill order that dial gauge now.

 

[j_martin]

Re: 89 v-135. anyone know how to adjust air:fuel ratio on this thing? + a timing ques

The depth indicator procedure sets the location of the timing pointer. Without that you can't reliably set the timing no matter what timing light you use.

The fancy one you're talking about applies to some now past era automobile engines. You have to set everything to 0 or it'll really fuddle you up with this engine. In other words, the snap-on magic light has to be dumbed down to ordinary to even work in this application. (I know, that's the light I use)

You can use the bump method of finding TDC if you know it. I made an adapter by knocking the glass out of an old spark plug and welding a tab to it so I could use a $15 dial indicator.

Here it is with the indicator strapped to it.

hope it helps
John