Briggs 5HP Flathead to Mikuni VM22 Intake manifold
- Thread starter skyler97
- Start date
whats the bolt spacing on the mikuni....the stock intakes for the briggs bowl carbs is roughly 1 7/8" http://rover.ebay.com/rover/1/711-5...0001&campid=5335845805&icep_item=312859656283
whats the bolt spacing on the mikuni....the stock intakes for the briggs bowl carbs is roughly 1 7/8" http://rover.ebay.com/rover/1/711-5...0001&campid=5335845805&icep_item=312859656283
center hole on a mikuni 22 carb is also off set down little from the bolt pattern.
that plastic intake madifold would of came off a engine like this.
they also used them on the Industrial plus 5hp engines. For example this thread shows a shot of the cover off exposing the intake and also show the engines model number https://oldminibikes.com/forum/index.php?threads/nos-briggs-and-stratton-industrial-plus-5hp.111069/
Using the engine model number and looking at carburetor section you will see its Part #50 (Which is also listed in the ebay listing above) and if you click on that you will see that the description/model fit list shows they used it on a 90000 series (3.5 and 13000 series 5hp) they all had matching port/bolt pattern on the block. https://www.jackssmallengines.com/jacks-parts-lookup/part/briggs-stratton/691922
Using the engine model number and looking at carburetor section you will see its Part #50 (Which is also listed in the ebay listing above) and if you click on that you will see that the description/model fit list shows they used it on a 90000 series (3.5 and 13000 series 5hp) they all had matching port/bolt pattern on the block. https://www.jackssmallengines.com/jacks-parts-lookup/part/briggs-stratton/691922
I thought Mikuni made a carb with the bolt holes centered on the flange?
Could be wrong but i thought @joshua. c. told me about it?
Could an adaptor be made?
when i did a search i found that same part number and plastic intake but i don’t have a Briggs here that i can measure
Could be wrong but i thought @joshua. c. told me about it?
Could an adaptor be made?
when i did a search i found that same part number and plastic intake but i don’t have a Briggs here that i can measure
ok ,got this engine and the intake and a big block 5hp
from what I can see the intake will not bolt up to a older big block briggs.
maybe on the newer models they might?but that just means the ports will also be much smaller too.
i get about .080 smaller, thats lot smaller.
I don't have any of my mikuni carb's off to measure. I do have some pictures save from my hs-40 build and ran a mikuni on that and you can see my adapter plate i have it outline with the mikuni on it and the center hole is much larger and it drops quite a bit.
from what I can see the intake will not bolt up to a older big block briggs.
maybe on the newer models they might?but that just means the ports will also be much smaller too.
i get about .080 smaller, thats lot smaller.
I don't have any of my mikuni carb's off to measure. I do have some pictures save from my hs-40 build and ran a mikuni on that and you can see my adapter plate i have it outline with the mikuni on it and the center hole is much larger and it drops quite a bit.
OP has a late model Fun power, as stated in his first post, it will have the wider pattern as its past when they went to wider pattern on newer style carbs in the 80's. I would not have suggested as a possible option if he had stated it was an old model engine with the smaller patterns......
Left is a 5 right is a 3 (and still a solid front square shaped early style block which is the only reason its still in my garage and not in the landfill )
Left is a 5 right is a 3 (and still a solid front square shaped early style block which is the only reason its still in my garage and not in the landfill )
Yes it was built up pretty big.....It was done in the late 80/early90's by a machinist. Ports are too big for my liking but It came with a bunch of really cool long gone out of production racing parts that were all new and unused since it got shelved back after its last refresh and setup in the early 90's