PDA

View Full Version : Merc 1000 Super BP Direct Charge



Mark75H
11-02-2006, 09:53 PM
Well, Dick Davis pointed out that he just got a motor to rob the early short mid section from and it is a 1969 89ci 100 hp. The block says Typhoon, just like a 99ci 125.

This stumped me until I figured out that the difference between the 89ci and 99ci motors is not in the bore, just the stroke ... the late 1960's blocks can be (and most likely are) from the same casting.

This would have allowed Merc to make an 89 ci Direct Charge version of the 1969 1000 Super BP with the only special parts being pistons, rods and some machine work to the ports and a short stroke 89 ci crank as far as differences from the Direct Charge 99ci 1250 Super BP

Early 89 ci owners don't get your hopes up ... the Tiger block with the same 2.88 bore doesn't have the clearance for the 2.56" stroke crank.

Mark75H
11-03-2006, 07:38 AM
I know the 1000BP had a special crank, pistons etc. for sure because a friend had a 1000BP that came with extra stuff...and its all different. He had a new crank, 6 new pistons, and enought stuff to make another 1000 BP powerhead from a direct charge block.
Yep, that is what I always heard but didn't understand. I was especially stumped by the special rods ... I could easily see why it would need the other parts but the rods stumped me ... until now. Thanks for being one of the few people who kept bringing it up. :)

Ray Lumpkin is one of the others who mentioned the special pistons. He says they are funny looking because the skirts are so short.

raymar
11-05-2006, 03:41 PM
Does anyone out there have some 1000bp parts such as rods, pistons & crankshaft you can post some photos of??? I have never been into a 1000bp block and I would like to see some pics of the internals.:confused:

Raceman
11-05-2006, 08:02 PM
Let's not lose track of the fact that Merc built BOTH 1000 BP's and 1000 Super BP's just like they did with 1250's. Obviously the pistons would've been different between the 2, just like they were with the 1250's.

AirRide
11-06-2006, 09:13 AM
Just as Merc did with all the V-6 Merc block castings for both the 122 & 142 ci blocks. In the eighties, the blocks had "V-225" cast in most of them, no matter what the size/horsepower rating. AirRide

4amsoil
11-08-2006, 09:59 PM
I was just directed to this site and have a question or two. I have a 1969 1000, how do I find out which engine I have (BP or super)?
4amsoil

Raceman
11-08-2006, 10:09 PM
I was just directed to this site and have a question or two. I have a 1969 1000, how do I find out which engine I have (BP or super)?
4amsoil

Is it a BP (race engine) or a consumer type 1000?

Read through this:
http://forums.screamandfly.com/forums/showthread.php?t=47325&highlight=1250+Super

Although it deals with 1250's instead of 1000's, externally they look essentially the same, and the differences between the BP and Super BP are described in depth.

4amsoil
11-10-2006, 06:12 PM
Raceman-What you are telling me is that I have a consumer 1000 and they didn't have a super BP in 1969. It has been a very reliable engine for me since '75. It still runs extremely well. Where can I get an owners manuel for it? Thanks 4amsoil

Raceman
11-10-2006, 06:44 PM
they had a super BP in 69, i just dont know if you had one



If you looked at the pictures on the link I posted, the BP's (both Super and non-Super BP's) had a fat mid section and racing type gearcase that was pointed in front. In '69 the only BP availble WAS the Super and it was basically the second generation BP.

If your engine has a std. looking mid and lower, then it's simply a 1000. By the way, on the old engines BP stood for Blueprinted. To confuse the issue more, Merc made some Bridgeport V6's in the '80's that are commonly referred to as BP's.

Back to the '69 question, Merc offered the 1000's in long shaft (for a 20" transom}, shortshaft (for a 15" transom) and BP's which were the racing versions.

4amsoil
11-11-2006, 09:24 PM
Thanks Raceman for the info. I really appreciate it. 4amsoil

Dave S
11-13-2006, 10:24 PM
BP stands for Burnt Piston....... also see high dome or dcharge.:D

raymar
11-17-2006, 03:48 PM
4amsoil,
If your 100 h.p.block says "Tiger" cast in the starboard side it is a standard consumer engine.

4amsoil
11-17-2006, 10:25 PM
Raymar
Thanks, it does have tiger cast on the starboard side. 4amsoil

Mark75H
11-17-2006, 10:29 PM
4amsoil,
If your 100 h.p.block says "Tiger" cast in the starboard side it is a standard consumer engine.


The motor that started this thread was a standard consumer engine as well ... and it says Typhoon. This may just mean that both blocks were used in 89ci motors during 1969.

This just occured to me as well .... if a 1969 1000 block says Typhoon it is a consumer block too. The 1000 Super BP was based on the no name 135 Direct Charge block.

raymar
11-21-2006, 07:31 PM
Inline Six, I appreciate your taking the time to post the pics!! If not too much trouble, I need to know the exact distance from the connecting rod hole centers and the rod forging numbers. (I have plans for a Frankenstein Merc using a 1250 Typhoon block)
Thanks, Raymar:D

Mark75H
12-07-2006, 06:49 PM
The correct rods for a 1000 Super BP are

622-3666-A5

I'll bet some other rods will fit, but are slightly different length ... the reason Raymar is asking about the forging numbers/marks and center to center length

The part number for the 1250 Super BP rods is 622-3666-A4, no dot shown on the parts list (not a new Merc part). Since only the suffix number after the A is different, the rods are very very close to the same thing. They may actually be the same casting but have some slightly different machine work to finish them ... but without side by side comparison it is a Tootsie Pop question ... "Mr. Wise Old Owl, how many licks does it take to get to the center of a Tootsie Pop?" ... "The world may never know"

Mark75H
12-07-2006, 06:52 PM
Eyeball comparison could miss something such as an eighth inch difference ... which would throw the porting and compression off by a mile

Raceman
12-07-2006, 08:31 PM
Eyeball comparison could miss something such as an eighth inch difference ... which would throw the porting and compression off by a mile

Hell, I'd think that .040 or .050 would throw the compression off by a mile on an inline.