Mark75H Question

[87hydro]

Got a question. Just talked to a guy who has a 115 Merc. inline and these are the #,s Serial# 2485286 On the block it says 836-3260 Tiger Is this a special motor? Tryin' to find out the year etc. Thanx- 87Hydro (Todd)

[bubba]

the guy is me . any help would be great .

i`m a rookie at this so just tell me where to start .

thanks,

BUBBA

[Raceman]

I don't know where Sam is tonight, but I'm gonna answer the question this way: There were never any special 115's..........not ever. The first year of the 1150 was 1970 and it stayed in this basic configuration through 1972. 72 was the only year the 1150 was offered as a short shaft engine and the reason was that the new 1400 had a different powerhead bolt pattern at the bottom and it initially came out as a longshaft only. There was no way to make it short to run on the tunnels early in the year and Merc first said there would be no short 1400's. Some of the racers even built the transoms up to run 20" motors. Later in the year Merc did build the short 1400 and of course in 73 the "new" 1500 came out in both short and long (20"). There were some changes in the 1150 and it got the new powerhead bolt pattern also in 73, but was never again offered shortshaft. Even though the engine changed some with the new model year (reed stops, etc), there were never any differences within a given model year.

As far as the Tiger question, I'm unfamiliar with the designation although I think Sam has addressed it before. I'd be surprised to find that it was actually on a 115 block of any model year.

[Mark75H]

Looks like you have a transplant.

The first year beginning serial number for 115 hp is 2836019.

2485286 appears to be for a 1969 100 hp which is correct for the Tiger name. Tiger means 89ci. Panther means 93ci, no name means either 76ci (which was a much smaller 80 hp motor with point ignition and 2 ignition coils) or 99ci.

The first Tiger was made in 1963, so unless you can find the actual block serial number I can only tell you it was made between 63 and 69. 68 and 69 have the good Thunderbolt ignition; earlier models have points. This could also be part of the transplant.

The block serial number is usually lightly stamped into the top of the block behind the flywheel. Look for a 7 digit number starting with 2.

[bubba]

i checked again and that is the number , it is located on the starter mounting bracket , this is also the same number on the mounting bracket. there was no numbers on the top of the block. the only numbers i seen was on the head #836-3260 and below that was the word tiger. next to the # 5 plug is the number#1011-2484 . what are these?

the motor is a mariner 115 ,at least thats what is on the motor shroud. so i guess i`m still lost on just what i have lol.

thanks for the help,

BUBBA

[David_L6]

Originally posted by Mark75H

2485286 appears to be for a 1969 100 hp which is correct for the Tiger name. Tiger means 89ci. Panther means 93ci, no name means either 76ci (which was a much smaller 80 hp motor with point ignition and 2 ignition coils) or 99ci.




So there is a 6 cyl "Panther" as well as a 4 cyl "Panther"?

What's the displacement of the 4 cyl?

[bubba]

this is a inline 6cyl. 115 HP.

so just what in sam hell do i have ? 63-69 ? the guy i got it from thought it was an 80-82. this is why i`m lost. any ideas for sure,was it a possible rebuild at one time ? where all the parts interchangable for these years . if it is a 100 HP from the late 60`s does that mean it going to be hard to find parts for it and why would it say 115 on the motor?


please help a rookie out.

thanks,

BUBBA

[crazy horse]

Hey Bubba, What color is the powerhead? I think around 1972 is when Merc started painting there powerheads black. Before that they were silver. I think thats the right time line.

[bubba]

the powerhead is silver.

i`m about half of an eye blink from chunkin the whole thing in the lake .lol

anyone looking for a motor i dont know the age or the HP ,hell i dont even know if it`s really a boat motor. lol

thanks,

BUBBA

[Raceman]

Okay, one more shot at this. All 115's were 70 or newer. If it's a silver powerhead it's 73 or older unless it's a 73 1500 which was the first black one. If it's a pre 70 engine it has transfer port covers on the starboard side of the powerhead that are about 1" wide and 3 inches tall with a bolt in each end. If it's 70 or newer it has a bigger cover with fins that covers 2 cylinders. If it's 70 or newer it is direct charge. If it's 69 or older it's a crossflow. Merc never made a 115 in the crossflow configuration. Hope this helps.

As far as it being a Mariner, I overlooked that detail originally and can't remember when Merc came with them, but they were well after the time frame we're talking about for silver powerheads. I think it was probably late 70's before Merc came with the Mariner line, but I can't remember for sure. They definately were not pre 75.

[bubba]

thanks RACEMAN

any idea how i can track down the numbers on this motor? i don`t know where it was purchesed or when. is there some place i can contact for this info ?


thanks,
BUBBA

[Raceman]

Bubba, I don't have any information by serial number. I've always just looked at the configuration for stuff I was interested in, which almost always is black powerheads. Sam or one of the dealers can probably be more help.

[bubba]

thanks

i`ll keep looking for the info. atleast i know it`s a mid to late 70`s model. now if i can just find the right info i`ll be all set.

BUBBA

[ggarland]

David:

You were wondering about the 4 cylinder Panther block. Well Merc used it with the early 4 cyl 65 H.P. engine, I think around 66 cubes. You can look that up in the specs to be sure. It was a hell of an engine, and was a fine ski engine for the 15 ft. runabouts in it's day.

[crazy horse]

Bubba, Your engine is older than mid to late 70's, If it's silver. Raceman my serial# guide shows 1977 as the first year for a Mariner 115hp six. It shows some small engine's as early as 1974. But none would be silver.

[Mark75H]

The 4 cylinder 65's are 60 and 62 ci. The 4 cylinder 80hp and 85hp are 66 ci and say "Super Marathon" on the side as do the older 66ci 6 cylinders. I am pretty certain the 4 cylinder 65's marked Panther share bore and stroke with the 93ci 6 cylinder blocks marked Panther making the 4 cylinder Panthers 62ci. There was no need to mark the early 65 as Tiger to match its 6 cylinder brother because the 4cyl 65 is easy on the eye to tell from the 44ci 4 that was made at the same time. With the almost 3" bore Merc decreased the compression ratio to give them a good saftey margin on detonation and they are waaay down on compression for racing


If bubba's block says Tiger, he has an 89ci block NOT a 99ci block.......this excludes any need to check the transfer port covers etc.


the motor is a mariner 115 ,at least thats what is on the motor shroud With all the bolt patterns the same and shrouds interchangable there are 100's of possible combinations. The decal on the shroud doesn't mean as much as the Tiger name on the block. Tigers have thin 3 screw transfer port covers (about and inch wide and 6 inches tall) and probably have Tillotson KC series carbs (the newer 115's, like Mariners, should have Mercarbs). Newer ones have one lumpy orange ignition coil, older ones have 2 black or silver can shaped coils (actually the last ones have 6 coils, right?).

[bubba]

i just checked it and it has KC 14at carbs ( i hope thats the number hrd to see them). it also has the lumpy orange coil. and it does have the three transfer port covers.

i dont race this boat ,all i need it for is to fish and to hunt waterfowl.

so is this thing worth my time to fix up or am i better off getting another ? if it is worth fixing up what can i expect to have in it when i`m done? i can put 7-8 hundred in it but that is all i`ll do .anymore than that i buy a different motor.

you guy have been alot of help and i thank each and eveeryone of you.


any more info please post ,

BUBBA

[Clams Canino]

So are you saying that the 1962 89ci block did not say Tiger and that they added the name in 63?

-W


[QUOTE]Originally posted by Mark75H


Tiger means 89ci.

The first Tiger was made in 1963, so unless you can find the actual block serial number I can only tell you it was made between 63 and 69.

[Clams Canino]

What you'll have when done is a quite nice 100hp motor that's practically bullet-proof. It will easily handle fish & ski use on a reasonable size / weight boat.

Just get the compression tested - if that's OK, then any repairs should be fairly cheap to make.

-W


QUOTE:
so is this thing worth my time to fix up or am i better off getting another ? if it is worth fixing up what can i expect to have in it when i`m done? i can put 7-8 hundred in it but that is all i`ll do .anymore than that i buy a different motor.

you guy have been alot of help and i thank each and eveeryone of you.


any more info please post ,

BUBBA [/B][/QUOTE]

[Mark75H]

A single orange coil probably means this is a 68 or 69 100 hp.


My finger musta slipped on the 62/63 thing.....Tigers start in 62



Shouldn't cost too much if it just needs to be freshened up and turn out to be exactly what Bubba is looking for.

[Clams Canino]

Thanks for the clarification.

Ironicly - todays job is a 1965 100hp with points. "Make it run" said the lady.....

-W <off to the driveway with tools>

[kspradling]

Hi,

I've got two '66 1100s and they have Tiger on the side of the block. Both are 93.5 ci motors as well. It could *possibly* be one of these, too. Mine has been troublefree and reliable even with the hybrid ignition system. Starts immediately and every time. I could look at the block to see the numbers.

Kirk

[kspradling]

Hi,

Parts list shows 836-3260A3 block as 66-67 950 or 68-69 1000.

Kirk

[Mark75H]

Krik, could you check the name and casting numbers on your 110's? I thought 110's said "Panther". Lets see if your cats agree with the parts book.


I have an old 100 in my basement with Tiger and 836-2486 casting number on it.

[bubba]

ok i give up lol who wants to rebuild this motor lol. if you do you`ll have to figure out what i have . good luck!

losing my head here,

BUBBA

[Clams Canino]

Who says it needs rebuilding? Get a compression test done - then talk about it.

-W

[CrayzKirk]

One is at the lake and the other is in parts in the basement. Here is the casting number of the one in the basement:

836-2485 and the word Tiger is on the block as well.

My parts list shows the block as that part as well. I am positive this is an 1100 unless the dealer sold my father something else in 1100SS trim in '66. It always seem to have a bit more than our friends '68 1000SS did.

Haven't seen Panther on any of my blocks.

I'm 99.95 percent sure his motor is an 1000SS of '68 or '69 vintage. The wraparound cowls and trim pieces fix from most years of inline sixes.

Kirk