Help guys (?) on 175hp. Mariner

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With the numbers on this motor can some one tell me what year it is.Its a 175hp.Mariner #(5580346) I would like to know if its a :confused: (2.0L) or a (2.4L) and is this motor called a (XR-6) and if the gearcase is also a (XR-6) and if its a 1.78 gear ratio??? Thx...:D ;) :p

[rock]

An XR6 is a 2.5. The XR6 gearcase is small diameter. That # didn't translate to Midas. Get serial number off clamp bracket. As long as it hasn't been changed that will get you some info.
Rock

[FrenchPhil]

Look at Port side block : 2.4 left & 2.5 right :

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Thx.Rock for your time and input.That answered my (?) about the XR6.I still need to know If its a (2.0L) or a (2.4L) and the year.As for getting the serial number off the clamp I did.The numbers are #(5580346) this motor is from the 80's to mid 80's Thx.

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Thx.FrenchPhil.I know its not a (2.5L) Its either a (2.0L)or (2.4L)...

[rock]

As best I can tell there were only 2 175 models that the serial # did NOT start with oc, og, od, etc. The V-1750 goes from 4301235 thru oc****** and the V-175 goes from 5190663 thru oc******. The V1750 was the first 175 back in the late 70's and the V175 was the next model after that, I think. That still doesn't tell you if it's a 2.0 or 2.4. Most serial numbers entered into Midas will yeild results. Did the number you posted come off a tag on the clamp bracket? I ran that number a second time and unless I have some sort of glitch it is not a serial number.
Rock

[YELLOWSS]

has it ever been apart?? heads changed??? the older 2 piece heads have the measurements of the bore on them. the 2.0 has 3 1/8 on them and 2.4 has 3 3/8 on them. anybody could have changed them though over the years.

check the SN# where the block and the front half meets behind the timing linkage. also there could be a date on the block just to the right of that to tell you the month/ day / year it was borned..

roy

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Hey Rock whats up.The numbers I posted came off a tag that was on the clamp bracket.I think the motor is a 1981 I bought a power head gasket. And I gave them my old one and they gave me a gasket for a 1981 But I still dont know if its a (2.0L) or (2.4)Thx..

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Hey Roy Thx...For your info.I dont know if its ever been apart.It has the older 2 piece heads but no measurement on them.The head that goes on the block the 1st. piece has for nombers #79714 The 2nd.piece that are diamond shaped has for numbers #1026-7261 As for checking for the SN# where the block and the front half meets behind the timing linkage.I knew about that I just cant make out the numbers to well.The 1st.set of numbers I can see good #7 6 9 The 2nd.set not so hot#01681 The 0 and the 8 I cant see to good I think that what it is not to sure.Thx..

[rock]

Check the heads. RWR is correct on the 3 1/8 and 3 3/8 cast into the heads. An 81 would likely be a V175 and the number you posted definitely falls into that range. Why the disk wouldn't give me that info is beyond me. Good luck.
Rock

[FrenchPhil]

Checked my files, probably a 2.0 from the first 175 vertical reed block, from '76 up, considering serial # (4301235-6618571).
Can u post a pic from port side block.

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Rock I did check the heads like RWR told me but I dont see anything cast on them like that.But thx.anyways for all your help and time.

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I can take some pic's of the port side of the block for you.But can I get your e-mail add.So that I can send to you I don't know how to post them on here. Thx...:D

[FrenchPhil]

It's easy clic "post reply" & clic "manage attachments" then clic "browse" & find your pic & clic "upload".