this is the block to be used, solid mold bridge port.:cool:
Printable View
this is the block to be used, solid mold bridge port.:cool:
Dang Fred, you couldn't find a block in better shape?
Document us a build on that motor Fast Fred, from start to finish, after all it's going to be another long winter.
P.S. Did you find it at the bottom of Chesapeake Bay? Not that there is anything wrong with that.
she was a hard worker, she'll clean up just fine, be a looker...................
We used to call power heads like that "submarines". But, like the man said, it's gonna be a loooong winter (dang it!)
Jeff
ok then, i've tryed to buy a good used cases, got told for 400 bucks you get what you get and thats what you get. so no sale. i've used new, but the cost is big, and in the end i don't think the customer was happy because of the over all cost. any ways once cleaned and .020 over she will be at a good fees-able cost . rules to be followed - what ever i feel like. the goal- to make as much HP as there is to make , to run with and /or by a 31M-FT
Cool, keep us up to date on the build Fred.
I have an 87 block on the bench that I will tackle this winter, got a home made SST60 tuner, 15" mid., Pro 50 swivel bracket with trim and nitro gear case to play with.
been soakin the case for a wile, goin to setup a straight in power head (56er) on a SST/ FT / Stinger mid, tray and hood. see what that looks like, see what i gots to do to make it fit..............
Any progress Fast?
roundin up all my parts still, did get some good notes off a thred hear, see if she will 9000 and hold it, sittin next to it on a tiller
first problem to over come is the bracket, :cool:,
Fred, do you know where I can buy a intake manifold for the angled mod 50 front half? Thanks
Hey Fred - Do you have that block sitting on a 49ci adapter plate for mocking it up or a 56? Not sure how much extra you need but if it's sitting on the 49 plate now, you'll gain about 5/16" clearance if you run a stock style 56ci adapter plate... Only reason I say that is from the pics it looks too short to be a 56 plate
Hey fred do you have anymore straight fronts ?
i would think Sea way would have some on the shelf. you can buy this one but you have to take the whole thing, when i'm done. with my standard warranty witch reads " you buy it you own it , no matter what it brings, and this agreement stands no matter of law ect.............
goin to change the bracket
I know this is a bit early do you have any plans on porting and the cast in exhaust passages? I'm interested in how this turns out.
it's not to early, it's best to have a plan. i will install the Straight-in port map. the exhaust will stand as it is. i've heard of Dyno tails of 115hp out of an SST 60 with stock carbs and no finger ports. not seein it. 110-115 hp is were i think she will end up, not seein the sst60 makin more than 100hp with finger ports............
see about puttin a copy of that map up, then yous can in stall it in one of your own
Would be nice to see that. Fred, you mentioned before about 2 barrel carbs being different for a mod 50 than carbs off an engine that feeds 2 cylinders like a V4 or v6. Other than jetting, and linkages, what would be different in making a v4 and v6 carb work in that application? I have 3 carbs here that look like the ones in your pics that I'd like to use on a similar project. Not sure what they were originally from but they were pulled off a 49.7 that someone had modified.
Kevin
the throttle plates are different, one cyl carbs only have the slot at the bottom of the plate. it will idle at like 7000rpms with "V" carb plates.
the main nozzle is also different, the older Mod50 carbs had a smaller center hole in the main nozzle, newer mod50 carbs have a jet in the bottom of the nozzle
gots a Mod50 straight in , seems unmolested, so i'll use it to get the port map and transfer it to the 56er and or the jest of it
Yes sir, that's what I'm talking about, finger ports looks kind of short though.
Nice to see this thread rolling again.
What would a power head like this cost?
i don't have that number for you at this time MGR, i am keepin notes on it.
talk about deck height, soon. later, got to go do stuff,:cool:
so, one of the things needed to build such a moda is, a 56er motor, or the sum of those parts. so when you get that power head back to shop, pull the head. note where each piston crown lands at TDC, most will be flush with the deck, what i want is for the crown to clear the deck by .020, deck as needed. SST 60 spec i have is 6.375 deck height to min. 6.363
exhaust port transfer, the mapping ink is called DYKEM, get some................
the exhaust port is huge on the Mod 50 block..................... that bein why i'm lookin to uses it
subscribed keep the cards and letters coming
gots a caliper hear, usein the back side for inside diameter= id, the height of the port is locked in,
so gots the port height locked in, and take it over to the 56er, from the bottom of the port, ( not goin to lower the port at any time ) set the lower finger of the caliper on the bottom of the port (sill) and make a scribe mark with the the other finger of the caliper
this is what i do hear on this, works on the 19-s front half as well............
same deal on the intake side, i'll get some numbers so yous can measure out a port map, be lookin to send it out for machined finger ports,
Hi Fred
If you are copying the port map are you going to use the long rods as well?
minimum run of pistons is 2500 bucks, that gets 4 sets, not seein it, 56er rods are .100 longer stock, than the 49er or so i was told (i'll check that my self) 56er seems to carry 10hp more cuzz of bore and and rod over the 49er. if i could buy three trick pistons i would......... gots sets of mod50 rods on hand.
So your building it with 56 rods and 56 style pistons?
I dont think the pistons are that expensive Phil McDaniel does 100 and then on sells them for 100 each I seem to remember ( 49 ones for the long rod that is)
Without the long rod your porting will be advanced compared to the Mod 50
the gain in mechanical leverage is not enuff to out way the cost, it's minimal, been a wiseco dealer for about 25years now. there is not a big dif' in the mod 50 rod over the 56er
if there is a new set of long rod 56er +.020 or +.030 over pistons would be interested ..............
so, some notes, the long rod with the trick piston gives the power head a mechanical advantage, over the stock set up. the piston crown vary much does the same thing at the same times give or take no mater which set up. if i was runnin in a class and could use them, i'd be runnin them. i run a set of McDaniels top pin Mod50 pistons now.
some notes on temp, no thermo, no springs, no guts at all, yup, sounds wrong, "thay" the factory, wanted the power head to run at 145deg F for regular racin, and 180deg F for kilo, temp gauge is a good idea, maybe a choker in the water exit toob to keep the temp up, if she is cold, she Bogs................
notes i've picked up along the way, did the facyory say them things, ????? don't know, sounds about right.