Stern Drive Conversion
 

James wrote:
I'm not
surpirsed about your alternator, I can not see anything about mine that
makes it marine and I know for a fact it is the original merc alternatior.


Depending on the set up. If the alternator is a Motorola (maybe
labeled as "Prestolite" or "Leece Neville") ,Those little units are
marine aproved because the brush assembly is totally enclosed and
there is no way for sparks to "kaboom" any gas fumes.

If it's a typical Delco car job, What the difference is, that the
alternators are "hollow" and fumes enter the unit and with brushes
exposed to air, you can get a spark. What is done to cure this is, to
install a (Spark arrestor) screen kit, which has some fine mesh
screening that bolts to the inside of the front housing (disassembly
required) then a screened back cover. I suppose it works.

Anyhow the screen kit isn't expensive. It's been a while since I
bought one but it's less than $20.00. No rocket science to install,
but takes 15-20 min. if you've never done one before. Only thing to
remember, is to pin the brushs for assembly,put the housings
together, but make sure you pull the pin before installing the back
cap.

The only reason I'm mentioning this, is if your alternator is a Delco,
you should have a screen kit installed. In my area, I've never known
of a boat blowing up because the Delco alt didn't have the screen kit
installed, but if by chance there was an engine fire, and the ins. co.
investigated, and the kit wasn't installed, the ins. co would probably
have second thoughts for honoring a claim.

Stern Drive Conversion
 

On Feb 16, 1:22 pm, "Tim" wrote:
James wrote:
I'm not
surpirsed about your alternator, I can not see anything about mine that
makes it marine and I know for a fact it is the original merc alternatior.

Depending on the set up. If the alternator is a Motorola (maybe
labeled as "Prestolite" or "Leece Neville") ,Those little units are
marine aproved because the brush assembly is totally enclosed and
there is no way for sparks to "kaboom" any gas fumes.

If it's a typical Delco car job, What the difference is, that the
alternators are "hollow" and fumes enter the unit and with brushes
exposed to air, you can get a spark. What is done to cure this is, to
install a (Spark arrestor) screen kit, which has some fine mesh
screening that bolts to the inside of the front housing (disassembly
required) then a screened back cover. I suppose it works.

Anyhow the screen kit isn't expensive. It's been a while since I
bought one but it's less than $20.00. No rocket science to install,
but takes 15-20 min. if you've never done one before. Only thing to
remember, is to pin the brushs for assembly,put the housings
together, but make sure you pull the pin before installing the back
cap.

The only reason I'm mentioning this, is if your alternator is a Delco,
you should have a screen kit installed. In my area, I've never known
of a boat blowing up because the Delco alt didn't have the screen kit
installed, but if by chance there was an engine fire, and the ins. co.
investigated, and the kit wasn't installed, the ins. co would probably
have second thoughts for honoring a claim.

I know my alternator is the original merc one so I think I'm ok as far
as it being marine.

Stern Drive Conversion
 

Really, the question was....... can I run a pre-Alpha with no water pump.
The closed cooling seems to have an engine driven raw water pump sucking
through the hull. From the consensus here seems like I don't need to bother
about it. I had been worried about the stern unit being cooled but I suppose
it is pretty well submersed in the lake water anyway...

Don Dando wrote:
I tend to agree with you, what is your concern or question ?

I would suspect that you may not find a water pump impeller either.

Don Dando

--
Message posted via BoatKB.com
http://www.boatkb.com/Uwe/Forums.aspx/boats/200702/1

Stern Drive Conversion
 

Got it...


Mike wrote:
relay it via the oil pressure switch or something similar so it only
feeds fuel if the crank is rotating.

Ok, I want to make sure you really understand this... it's important. The
fuel pump should only be working when the engine is cranking to *start*, OR
there is oil pressure. When you're cranking the engine to start it, there is
no oil pressure, but you need fuel. Once it's started, AND you have oil
pressure, the fuel pump works as well. The scenario you want to avoid is a
running engine, being fed fuel, with NO oil pressure.

James' advice is dead on. The pump needs to be wired to the cranking
terminal of the
starter *AND* (not OR) to an oil pressure switch.

--Mike

Thanks for all that info - for the time being while I get this running
while
[quoted text clipped - 34 lines]

Eisboch

--
Message posted via BoatKB.com
http://www.boatkb.com/Uwe/Forums.aspx/boats/200702/1

Stern Drive Conversion
 

On Feb 16, 1:54 pm, "Bennie via BoatKB.com" u31788@uwe wrote:
Really, the question was....... can I run a pre-Alpha with no water pump.
The closed cooling seems to have an engine driven raw water pump sucking
through the hull. From the consensus here seems like I don't need to bother
about it. I had been worried about the stern unit being cooled but I suppose
it is pretty well submersed in the lake water anyway...

Don Dando wrote:
I tend to agree with you, what is your concern or question ?

I would suspect that you may not find a water pump impeller either.

Don Dando

--
Message posted via BoatKB.comhttp://www.boatkb.com/Uwe/Forums.aspx/boats/200702/1

Yes, the outdrive is cooled by being in the water. The water pump is
to supply cooling water to the engine, not the drive. Some people add
a drive shower for cooling the upper bearings in performance
applications but that would not be your situation.

Stern Drive Conversion
 

On Feb 16, 12:41 pm, "jamesgangnc" wrote:
On Feb 16, 1:22 pm, "Tim" wrote:





James wrote:
I'm not
surpirsed about your alternator, I can not see anything about mine that
makes it marine and I know for a fact it is the original merc alternatior.

Depending on the set up. If the alternator is a Motorola (maybe
labeled as "Prestolite" or "Leece Neville") ,Those little units are
marine aproved because the brush assembly is totally enclosed and
there is no way for sparks to "kaboom" any gas fumes.

If it's a typical Delco car job, What the difference is, that the
alternators are "hollow" and fumes enter the unit and with brushes
exposed to air, you can get a spark. What is done to cure this is, to
install a (Spark arrestor) screen kit, which has some fine mesh
screening that bolts to the inside of the front housing (disassembly
required) then a screened back cover. I suppose it works.

Anyhow the screen kit isn't expensive. It's been a while since I
bought one but it's less than $20.00. No rocket science to install,
but takes 15-20 min. if you've never done one before. Only thing to
remember, is to pin the brushs for assembly,put the housings
together, but make sure you pull the pin before installing the back
cap.

The only reason I'm mentioning this, is if your alternator is a Delco,
you should have a screen kit installed. In my area, I've never known
of a boat blowing up because the Delco alt didn't have the screen kit
installed, but if by chance there was an engine fire, and the ins. co.
investigated, and the kit wasn't installed, the ins. co would probably
have second thoughts for honoring a claim.

I know my alternator is the original merc one so I think I'm ok as far
as it being marine.- Hide quoted text -

- Show quoted text -

Yes, I understand that, but many people don't. i thought I'd make my
posting hoping somebody would read it, that is, before they took their
typical Delco "car job" and "Marine--ized" it, by pumping the
recitifier ports etc, full of Silicon sealer.

Yes, I've seen that done before!