4.3L Oil Filter

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Checkster

Cadet
Joined
Aug 6, 2004
Messages
6
Where is it? I have a 1991 4.3L with Alpha One Gen I. I am tired of looking for it and my mercruiser manual doesn't show. Help...need to change the oil.
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: 4.3L Oil Filter

Well, if nobody has installed a remote oil filter on it, it should be located on the port side of the engine back near the flywheel.<br />If a remote oil filter was installed, then there are hoses coming from where the oil filter should be......just follow them.
 
Bt Doctur

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,319
Re: 4.3L Oil Filter

either mounted remotely on the rised or at the right rearmost part of the block when facing the engine.
 
C

Checkster

Cadet
Joined
Aug 6, 2004
Messages
6
Re: 4.3L Oil Filter

FOUND IT! Thanks. Since this is a GM and everything else on the boat appears to have been replaced with automotive parts, I was looking for a little larger, blue, orange or white filter. Now.....I gotta figure out how to get to it to get it out.......
 
T

trog100

Senior Chief Petty Officer
Joined
Dec 1, 2004
Messages
751
Re: 4.3L Oil Filter

i tried to "automotive" swop my oil filter on my 3 litre engine.. cross referencing numbers failed and i ended up visually looking at a whole bunch of em.. found one that looked okay fitted the bloody thing fired up the engine and ten seconds later it blew off..<br /><br />the threads must have been a few thou smaller and i ended up with a mess in the bilge area he he.. still could have been worse it could have stayed on a little longer blew off with the engine under load and wrecked it..<br /><br />not saying automotive swopping with oil filters is a bad idea just make sure u get the right one.. he he<br /><br />trog100
 
Bondo

Bondo

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Staff member
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Apr 17, 2002
Messages
70,990
Re: 4.3L Oil Filter

If you Really want to Know More than is Really Nessessary about Oil Filters,....... :D <br />1 of our own, garycinn, did an Exhaustive Study, Check It Out.....
 
D

DHPMARINE

Captain
Joined
Dec 16, 2003
Messages
3,688
Re: 4.3L Oil Filter

Checkster<br /><br />Getting to it and getting it off is a great idea.<br /><br />Now can you get to it and get a new one on ?<br /><br />Upset a customer with an Invader a couple years ago.But I just could touch the filter,and wasn't sure I could get a new one on.We sold him a remote kit,and it took hours to install.Even after exhaust manifold removal.<br /><br />DHP<br />as to aftermarket (other than OEM filters) do you save that much?
 
C

Checkster

Cadet
Joined
Aug 6, 2004
Messages
6
Re: 4.3L Oil Filter

I can get to it (after removing the batteries) but none of my wrenches fit the filter and I cant get enough leverage to loosen it......looks like its stayn right there for a while.
 
C

Checkster

Cadet
Joined
Aug 6, 2004
Messages
6
Re: 4.3L Oil Filter

Hey trog100, the guy at the boat shop gave me a crossref auto filter too. I told him I prefered the marine filter. He said, "Suit yourself." like I was being picky......I was and it is only a couple of bucks more.
 
B

BRG25

Chief Petty Officer
Joined
Jul 13, 2001
Messages
528
Re: 4.3L Oil Filter

Originally posted by Checkster:<br /> FOUND IT! Thanks. Since this is a GM and everything else on the boat appears to have been replaced with automotive parts, I was looking for a little larger, blue, orange or white filter. Now.....I gotta figure out how to get to it to get it out.......
Click to expand...
What automotive parts are you refering to? :eek:
 
C

Checkster

Cadet
Joined
Aug 6, 2004
Messages
6
Re: 4.3L Oil Filter

Start with trailer tires and it doesn't get better.....Most replaced with marine now though.
 
T

trog100

Senior Chief Petty Officer
Joined
Dec 1, 2004
Messages
751
Re: 4.3L Oil Filter

"Hey trog100, the guy at the boat shop gave me a crossref auto filter too. I told him I prefered the marine filter. He said, "Suit yourself." like I was being picky......I was and it is only a couple of bucks more."<br /><br />yes i live in the UK thow.. we have diffent cross reference books.. big old american GM engines aint common and as for mercruiser marine numbers.. well they just scratch their heads and say.. errrr.. u wot..<br /><br />we call out "boatshops" chandleries and be prepared to get ripped off if u enter one.. like four quid (nearly $8) for four stainless steel screws for example.. he he..<br /><br />my quicksilver filter cost me a twenty mile road trip to find one.. plus £7.50 uk money for the filter.. that works out about $14 US..<br /><br />my attempt at automotive swopping did cost me an oily mess thow.. and a £3 automotive filter i had to throw away.. he he..<br /><br />i cant see any real reason why a marine filter should be any better than an automotive one to be honest.. and in this country anything with marine written on it costs dearly and is harder to obtain.. perhaps three or four times the price of similar automotive things..<br /><br />bascally dudes.. i pay dearly for having an american boat.. u do make some nice ones thow.. he he <br /><br />i dread the day i have to source some real spares.. boat prices work out roughly at a dollar to a pound.. with an exchange rate of nearly two dollars to the pound it means everything costs at least twice as much.. gas cost four times as much..<br /><br />basically if i wanted to buy a nice 30ft used boat.. it would pay me to have a months holiday in america.. buy a boat.. have it shipped over to the UK and still come out well on top.. he he<br /><br />thoughts for a business there for anyone thats interested.. he he <br /><br />trog100
 
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