Chrysler 70 hp - What a beauty.

[MyFirstSaphire]

Hi all, I just joined today and like what I have read. Many many experts here so I know I am at the right place.

I purchased a 4.5 meter fibreglass run a round a couple of weeks ago and am trying to get her sea worthy.

Now to my issue.

The 20 hp outboard is an oldie but with just 3 new plugs and a fully charged battery she fired up first crank. Boy was I Mr Impressed. I could almost smell the snapper... Yes I had ear muffs on her.

I notice no water coming out of the upper exhaust exit but exhaust does come out of it. I didn't notice any water when the engine was at idle or forward/reverse throttle either.

Is this normal?

I assume not so any help in what I need to do to remove the lower end to replace the spindle would be of great use.

I do not know what year the engine is nor how to find out either I can load a pic if this helps.

The lower unit seems attached by 3 bolts each side.

Waiting with baited breath for a reply.:joyous:

 

[dutch420]

Re: Chrysler 70 hp - What a beauty.

Hi and welcome to iboats

First the id plate on the inside of the cowling will tell us alot about ur motor so that would help..
Second no water coming from the old girl is not good. Sounds like the water pump is gone. Not a big problem and suprising easy to do.. Frank has posted a few things on how to do this. He was very detailed so u should have no problem. But there is 7 bolts not just 6 the 7th is hidden up in the exhaust snout, also dont forget to disconect the shift linkage before u start pulling the old girl apart. Any other issuse just ask and good luck

 

[dutch420]

Re: Chrysler 70 hp - What a beauty.

Check out the sticky
Chrysler and force faq. That will tell ya all

 

[MyFirstSaphire]

Re: Chrysler 70 hp - What a beauty.

Check out the sticky
Chrysler and force faq. That will tell ya all

Firstly I appreciate everyone's response.

I have little patience but probably because I am on the last stretch so to speak...Over 50... So since I wrote the post I have taken the bottom off. and I did find the other bolt, I have loosened the 4 bolts that retain the water impeller. I have also posted some shots of it here.

I need to know your opinion on the impeller. I think it is past it but I am no expert.

Also how does it come off the shaft?

No ID under the hood but have posted some shots so maybe someone recognizes her.

 

[Nordin]

Re: Chrysler 70 hp - What a beauty.

Yes that impeller has past it`s lifecycle. To change it you have to push it upwards the driveshaft. If there is a retainer for the rubberbelow at the shafttop you just have to remove it. The retainer is just pressed at the shaft but can be tricky to remove. Use a little of force and it will come out.
The impeller is secured at the shaft with a little key Be carefull not to miss it.
Check the impeller house if it is worn.
There is a waterpump kit available complete with impeller, housing, steelplate, shaftseal and gaskets.
You can get it at the internet ex. Franz Marine, maxrules.com, iboat.

To find out the year of it we need more pics from lowerunit and cowl. The idtag should be in the lowerpan/cowl just infront of the carbs.
It has the beltdriven distributer ig.system and that is prior 1978-79. If the distributer has two terminal to the housing it has the electronice eay instead of points, then it is from about 1974-75 and up. Prior 1974 it had points.

 

[MyFirstSaphire]

Re: Chrysler 70 hp - What a beauty.

Yes that impeller has past it`s lifecycle. To change it you have to push it upwards the driveshaft. If there is a retainer for the rubberbelow at the shafttop you just have to remove it. The retainer is just pressed at the shaft but can be tricky to remove. Use a little of force and it will come out.
The impeller is secured at the shaft with a little key Be carefull not to miss it.
Check the impeller house if it is worn.
There is a waterpump kit available complete with impeller, housing, steelplate, shaftseal and gaskets.
You can get it at the internet ex. Franz Marine, maxrules.com,

To find out the year of it we need more pics from lowerunit and cowl. The idtag should be in the lowerpan/cowl just infront of the carbs.
It has the beltdriven distributer ig.system and that is prior 1978-79. If the distributer has two terminal to the housing it has the electronice eay instead of points, then it is from about 1974-75 and up. Prior 1974 it had points.

Thanks, great help. I will get a photo of the cowl pan area by the carbs.

I have another pic of the impeller and it looks like a key may be holding the impeller in place. Do I just force it off?
.

It looks like iboats don't ship to New Zealand. Master Tech seems to have the impeller but don't say if they ship to NZ either. Is there some way I can pay them through my PayPal and get it sent to me?

 

[Nordin]

Re: Chrysler 70 hp - What a beauty.

Yes you can force it off. If it is really stuck, share the impeller with a metalsawblade. That impeller is shot so it doesn?t matter. If you look at the wanetip they are worn and sharp. They should be smooth and round. Compare with the pics that Master Tech have in the store.
Franz Marine ships worldwide I know I have dealed with him. Master Tech says at the Homepage that they ship worldwide and also that you can pay through PayPal.

 

[MyFirstSaphire]

Re: Chrysler 70 hp - What a beauty.

Yes you can force it off. If it is really stuck, share the impeller with a metalsawblade. That impeller is shot so it doesn?t matter. If you look at the wanetip they are worn and sharp. They should be smooth and round. Compare with the pics that Master Tech have in the store.
Franz Marine ships worldwide I know I have dealed with him. Master Tech says at the Homepage that they ship worldwide and also that you can pay through PayPal.

Thanks Nordin I contacted Franz and arranged the shipmeant of water pump complete as he suggest I do a complete replace as mine was beyond just an impeller to fix.

Also found the tag and it is a Model 707HF. I gather it is very old.

I hope once the water pump is repaired all will be good as it seemed to run fine but I didn't run it long as the water was not flowing.

 

[Nordin]

Re: Chrysler 70 hp - What a beauty.

Okey, then you have solved the problem.
707HF is a 1973.

 

[MyFirstSaphire]

Re: Chrysler 70 hp - What a beauty.

Okey, then you have solved the problem.
707HF is a 1973.

Yes, thank you Nordin all solved now, parts are on the way as we speak. How do you know a 707HF is a 1973?

Also while I am here I have placed a hose at the intake where the water pump would plug into and ran fresh water through the engine, is this acceptable? Not with the engine running.

 

[carholme]

Re: Chrysler 70 hp - What a beauty.

Deleted. Sorry, I see your question was addressed to Nordin

Gerry

 

[Nordin]

Re: Chrysler 70 hp - What a beauty.

Flushing the engine with freshwater is always good if you use it in saltwater. If you have the boat on a trailer and pull it up after each ride, then flush with freshwater that is good maintainence.

Many internetsites have model/yearguide. Maxrules does and discountmarine also.

 

[MyFirstSaphire]

Re: Chrysler 70 hp - What a beauty.

Flushing the engine with freshwater is always good if you use it in saltwater. If you have the boat on a trailer and pull it up after each ride, then flush with freshwater that is good maintainence.

Many internetsites have model/yearguide. Maxrules does and discountmarine also.

Many, many thanks your help was invaluable to me. I found the model/year and wow I thought it was older, so very happy.

Another aspect of this motor is when I place it in position for the water there is a rod that slides through some holes to rest the motor on but what locks that rod in place? Anyone?

Will puy up a pic if needed.

 

[Nordin]

Re: Chrysler 70 hp - What a beauty.

The trimpin should have a little "hook" that is intergraded in the handle and it hooks up under the transomclamp and hold it in place.
On older engines the handle and hook was made in metal but on later it was in plastic and the hook may have gone away. Plastic doesn?t last as long as metal.

 

[MyFirstSaphire]

Re: Chrysler 70 hp - What a beauty.

The trimpin should have a little "hook" that is intergraded in the handle and it hooks up under the transomclamp and hold it in place.
On older engines the handle and hook was made in metal but on later it was in plastic and the hook may have gone away. Plastic doesn?t last as long as metal.

Thanks for that. I will drill a hole through the pin and secure it when in place while sourcing out another pin.

 

[MyFirstSaphire]

Re: Chrysler 70 hp - What a beauty.

So got the part... Find now the 4 bolts that bolt on the water pump are not tightening as threads in lower unit stripped.

I want to fill the holes with ABRO STEEL putty then once hard re-drill and tap threads.

Any comments, would electrolysis be an issue with this later on?

Is there an easier fix?

 

[Nordin]

Re: Chrysler 70 hp - What a beauty.

Yes, I think you can use that "epoxysteel" putty and issue for electrolysis....... no I do not think so.
Another way to fixit is if you can drill and thread to next size of bolt inch or millimeter.
Do not exactly know how it look like but maybee it is possible to drill the holes in the LU through the leg and use nuts.
If that is possible use stainless steel nuts.

 

[MyFirstSaphire]

Re: Chrysler 70 hp - What a beauty.

Thanks for that but nuts are a no go. I like the idea of a slightly larger bolt so might go that way as tehre is enough thickness to go a few sizes larger,

 

[Frank Acampora]

Re: Chrysler 70 hp - What a beauty.

Three of the bolt holes can simply be drilled 1/2 inch deeper and re-tapped. Use a 3/16 drill and 1/4 -20 tap or metric equivalent. Then use longer bolts. Be careful tapping though. It is deep and there is a possibility of breaking the tap then you are up s**ts creek.

Unfortunately, the fourth bolt is directly over the vent hole so you can not go much deeper. However, you may be able to re-tap it larger.

You also have the option of doing what Mercury did on later Force engines: Epoxy in four studs and secure the pump with nylock nuts on top. Just be certain to coat the studs well with grease or anti-seize before mounting the pump. This will help next time you try to get it off.

Merc didn't need to worry about that because their pump was plastic--unfortunately, it will not swap onto your lower unit.

 

[MyFirstSaphire]

Re: Chrysler 70 hp - What a beauty.

Hi Frank, thanks for that I think it is the way I will go, less hassle and probably as good as original. I will use thread lock on the nuts so all good. Want to take her on her first sea trial in a week so will report back then. Again thanks for your help.