Working On My Dauntless : Several Questions

hallo

the frenchy come back with questions !!

this we , i ve started working on my dauntless from a boat (omc) and i ve several questions

1) alternator

with internet , i found that my alternator is a prestolite : am i right ???
but , i don t have the voltage regulator (for me is still on the boat) . is it easy to find ??



2) fuel pump

my carburetor is already connect to the pump , but i dont know how to connect it to the fuel tank . must i use the pin with the red or green circle ????


3) ignition distributor

where i must connect the distributor "lung" ????
i ve searched on carb and around , intake manifold , but i didn t see anything



4) fly wheel

here is a pic of my fly wheel , is the right one to put a cluctch ???


i ve seen several clutch on rockauto , the difference is the diameter . if my fly wheel is the right one , which one must i take

good news , my crankshatft is ok for beraing ( i was almost sure , but with omc parts in front it was hard to be sure at 100% ) , pic without the omc coupling


thank you

have a nice day

 

On your alternator-yes you need to find the external voltage regulator. Yours is a prestolite. I'd junk it and buy a delco one wire for an early 80s chevy truck and build a bracket for it.
Fuel pump- change out for a replacement as an old pump probably has a diaphragm that is dry rotted anyhow. They are cheap.
Distributor lung....or vacuum advance- there should be a small 3/16 or so fitting on your carb to plug into. I've also seen them on the intake.
Flywheel- looking at pics I'm not sure if it's correct for clutch. It doesn't look machined. I'd probably find a replacement to compare it with. Don't forget to install pilot bushing

 

You must use a voltage regulator with that alternator.

Regarding the flywheel, yes that flywheel is used with a clutch. The flywheel for an automatic transmission (usually called a "flexplate") is very different.

The relevant diameter is the friction material, the "clutch plate." The bolt holes are in the pressure plate, or "clutch cover" and do not indicate the diameter of the clutch. They are far outside the friction material. I believe you want a 10.5" clutch.

Distributor advance typically goes to manifold vacuum.

 

alternator : ok , found regulator on rockauto

vacuum = it was that word !!! thank you , i couldn t remind it !!! ok , i ll check more carefully on the intake

pump : yes , i ll change it or rebuilt it (i ve done it for the hurricane)

flywheel =

- it s a normal fly wheel , but there is a lot of grease and dust on it . i ve cleaned it and it s like a fly wheel that never receicved a clutch ou never ran .
- my measure was to be sure that the fly wheel can receive a jeep clutch without drilling new holes . what is the difference beetween the clutch (diameter )

 

I believe your flywheel may be the standard Buick 225 part that is not as heavy as the version used for the Jeep application. Either version will work fine.
-Donny

 

how can i know it ? weight ou number ?

 

Not sure what carb you have but the stock 2GC carb has a place for the vacuum advance hose. I don't want to disagree with Tim but from what I've seen it does not normally go to manifold vacuum.

 

There should be a casting number on the flywheel somewhere. You'll have to remove it to see it. Something like "3234567."

 

I don't know about the V6, but in later cars the vacuum advance switches from manifold vacuum when cold to ported vacuum from the carburetor base when hot (for normal operation). Manifold vacuum will probably run better. There is a thermal vacuum switch that normally handles this. The only difference between ported vacuum and manifold vacuum is at idle: ported vacuum is blocked by the throttle plate at idle and goes to zero. This provides lower emissions, but the engine will probably idle better with some vacuum advance.

 

The Dauntless has the distributor vac advance connected to the ported vacuum on the carb base if it has a Rochester 2G. I've never tried the manifold vacuum, but I believe remember someone on here doing it inadvertently a couple of years ago, it wouldn't run right.

 

I recently picked up a marine 225 with what I think is the same flywheel. My is 1.5 inches thick from the ring gear to the step on clutch side plus about 5/16 more on the back side. It is for sure 50#s plus.

 

lot of information !! need few a hours to read and understand about the vacuum

yes , my carb is a rochester 2 barrels


i am only at the engine chapter !!! what this will be when i ll work on the t90 chapter = connect the v6 clutch with the t90 4 cyl shaft !!!!

 

If it's a boat flywheel, it may never have been surfaced for a clutch. If it's the same flywheel as an automobile used (compare casting numbers), you could have the flywheel surface machined for the clutch. This is a common operation for an automotive machine shop.

 

Distributor advance

Good info on ported vs manifold vacuum

 

This should be mandatory reading for anyone that claims to know how to tune a engine.I had a rather heated discussion with some high profile forum members several years back on this subject. Hopefully people will read the article and understand it. mike

 

This might help.

 

i will check it

 

thank you

the "sensor" for the starter is going in in the exhaust maniflod ??? on my engine it was like that

 

sorry but i don t understand what you want to say