4.3l 4.3lx 4.3lh??

[damie]

Can anyone tell me the difference between the 4.3L 4.3LX 4.3LH alpha one enginges 1996-2000?<br />thanks.

 

[DHPMARINE]

Re: 4.3l 4.3lx 4.3lh??

I don't know about the LH,but is it 2 barrel verses 4 barrel?<br /><br />DHP

 

[damie]

Re: 4.3l 4.3lx 4.3lh??

MMM... not sure.<br />Don s just got me thinking as mine is 99 model 4.3 mercruiser alpha one i always thought that it was the LX but don quite rightly points out that LX finished in 97.<br />mine has original motor and drive with only 140 hrs on it.

 

[Don S]

Re: 4.3l 4.3lx 4.3lh??

Just to add some fuel to the confusion, lots of parts changed and trying to figure out which part is different on which engine you would have to do yourself. There are some head changes, cam changes distributor changes etc over the years. Here is some other info.<br /><br />All 4.3's use the L designation to indicate liters. (4.3L equals 262 cu. in.)<br />This designation was used between 1988 to present time to show engine size only.<br /><br />The 4.3LX designation started in 1988 till 1992 and had a 4bbl carb.<br /><br />The 4.3LX (Gen II) designation was used between 1992 and 1996 and had a 4bbl carb.<br /><br />The 4.3LX (Gen+) designation was used from 1996 to 1997 and had a 2bbl carb.<br /><br />The 4.3LXH (Gen+) designation was used from 1996 to 1997 and had a 4bbl carb.<br /><br />The 4.3LH (Gen+) designation was started in 1998 and is still used. Both 2 and 4bbl carbs on same engine. Both have 190 HP rating as shown in service manual #25.<br /><br />From service manual #18 for 4.3L engines between 93 and 97 here are the HP ratings.<br />4.3L -- 155<br />4.3LX - -175<br />4.3LX (Gen+) -- 190<br />4.3LXH (Gen+) --205<br /><br />The Gen +. Gen II, designations showed not only engine changes but options available.

 

[damie]

Re: 4.3l 4.3lx 4.3lh??

Don s,<br />it looks like mine is a LH model but b4 i order any parts i will check against motor id number.<br />thanks for your time and input here.<br />regards mariah 18<br />P.S happy new year all!!!!!!!!!

 

[Don S]

Re: 4.3l 4.3lx 4.3lh??

Also, when I ask for your SN, one reason is you could have an older engine package in the boat. Not unheard of when a manufacturer orders more engine drive packages than needed and has some left over. He will use them before ordering again.<br />So having a LX from 1997 is possible.

 

[damie]

Re: 4.3l 4.3lx 4.3lh??

Don s, looking at the flame arrestor i thought that the older packages had the large square type covers...mine has the later round type...like the 3.0lx does the above still apply??<br />thanks.<br />mariah 18

 

[Don S]

Re: 4.3l 4.3lx 4.3lh??

I wouldn't even guess without a serial number. That is how Mercruiser does things, by SN, not year.

 

[damie]

Re: 4.3l 4.3lx 4.3lh??

Don s, i now have a sn OL313397

 

[Don S]

Re: 4.3l 4.3lx 4.3lh??

Mercruiser has it registered as a 4.3L only.<br /><br />1998 MERCRUISER 1 PC W/PS 4.3L ALPHA<br /><br />ENG: 0L313397 4211015LS MERCRUISER 4.3L ALPHA <br />DRV: 0L402421 5121300LS MERCRUISER ALPHA 1.62:1 <br />TRN: 0L299214 6111001LS MERCRUISER ALPHA TRANSOM<br /><br />Your hull ID number should be MAB17124H899

 

[damie]

Re: 4.3l 4.3lx 4.3lh??

Thanks Don s, those match up with the drive and transom sn also!! <br />as per my earlier thread where is the best place to buy service parts that will ship to the U.K?<br />Thanks.<br />mariah 18

 

[Don S]

Re: 4.3l 4.3lx 4.3lh??

That, I can't help you with. I can help with what to buy and what the part number would be, but the best place to buy it is out of my league.

 

[damie]

Re: 4.3l 4.3lx 4.3lh??

Thanks Don s.<br />i wonder If you could tell me the merc part nos for the following.<br /><br />oil filter<br />fuel filter<br />spark plugs<br />impeller<br />leg gasket set (for removing and replacing after impellor change).<br />is there any other parts that i might need for a general service that i have missed?<br />also do you know by the engine no if 2bbl or 4bbl and hp?<br />many thanks again Don s.<br />mariah 18

 

[Don S]

Re: 4.3l 4.3lx 4.3lh??

Look at your carb to be sure if it's a 2 or 4bbl carb, but I would say it should be the 2bbl. I'll do you one better for parts, here is a couple of links for parts. you can get your part numbers from http://dougrussell.com/partscatalog/collections/index.cfm?fuseaction=collectdetails&colid=04 <br /><br />Go to the 4.3L (GEN +) (2 BBL.) GM 262 V-6 1998 link for engine parts and use the ALPHA ONE (GEN.II) 1998 link for the drive parts.<br /><br />PS: Please don't misunderstand, I don't mind helping find a specific part now and then, but I'm not going to become a parts lookup service for everything.

 

[damie]

Re: 4.3l 4.3lx 4.3lh??

Thanks Don s<br />ill take a look.