View Full Version : 40hp mercury custom twin carbs
tyst67
03-23-2014, 04:23 PM
567365673756738 all custom build ready to bolt on, any opinions?
let me know if u selling it. i might able to get use of it. wirawira100@hotmial.com . regard david.
Fastjeff57
03-24-2014, 05:59 AM
Is this unit made by sawing off one cylinder's worth of intake from a triple?
Jeff
tyst67
03-24-2014, 06:22 AM
Is this unit made by sawing off one cylinder's worth of intake from a triple?
Jeff
Yes sir Jeff! I just finished it yesterday. I hope it gives me some gain over my single carb setup. What do you think it will do Jeff?
tyst67
03-24-2014, 06:26 AM
let me know if u selling it. i might able to get use of it. wirawira100@hotmial.com . regard david.
I can always make another one if your interested! What is your motor and the specs of it?
im running mercury 40hp sea pro 2 cylinder with single carburetor against yamaha 30hp 3 cylinder.but seems the yamahas way too fast.........
im race a mercury 40hp sea pro single carb against yamaha 30hp 3 cylinder....but seems the yamahas way too fast....i hope the twin carb setup can wake the sea pro...
tyst67
03-24-2014, 09:12 AM
im running mercury 40hp sea pro 2 cylinder with single carburetor against yamaha 30hp 3 cylinder.but seems the yamahas way too fast.........
I have a 30hp mercury sea pro with the 40 upgrade! So we are running the same motor!! I can make yours fly! What is your speed, prop size and boat?
Fastjeff57
03-24-2014, 09:32 AM
..."What do you think it will do Jeff?"
Go like a bat outta hell!
Jeff
tyst67
03-24-2014, 09:48 AM
..."What do you think it will do Jeff?"
Go like a bat outta hell!
Jeff
I sure hope so Jeff
i run it on a hoffman 45ss hull....props is quicksilver 18" mini chopper....speed is 55mph on gps....but the smaller yamahas 30hp 3 cylinder smoke me in every race.......tyst67 i need your help...
mine is original 40hp sea pro 2 cylinder lost foam type block.engine is bone stock.is yours ported? i just wonder how to high the compression on this one..hm...
tyst67
03-24-2014, 11:44 AM
mine is original 40hp sea pro 2 cylinder lost foam type block.engine is bone stock.is yours ported? i just wonder how to high the compression on this one..hm...
Ok my email is tyst67@hotmail.com and my Facebook is https://m.facebook.com/tyler.storey.16 add me up and we can do some tuning! I tried to email you but the email said the address was wrong. 55 is working good but these motors are incredible
tyst67
03-24-2014, 12:12 PM
i have sent u an email
I got it
nhpoplin
04-04-2014, 10:40 AM
Did you get a chance to test it out tyst67? My friend has the same motor and we are thinking about doing the same thing to it!! Please post results when you get it up and running!!
tyst67
04-04-2014, 05:49 PM
Did you get a chance to test it out tyst67? My friend has the same motor and we are thinking about doing the same thing to it!! Please post results when you get it up and running!!
The rivers are stil froze in but I should be able to try it in a few weeks! I'll let you know when I try it
The rivers are stil froze in but I should be able to try it in a few weeks! I'll let you know when I try it
crikey ,it must get pretty cold where you live.we sook like a bunch of school girls when theres just a frost over here.
Fastjeff57
04-05-2014, 05:22 AM
This has been a dog of a winter here in the north eastern USA. Last year I was running prop tests in March; this year I'll be happy of I can hit the lake in April!
Jeff
tyst67
04-06-2014, 08:07 AM
This has been a dog of a winter here in the north eastern USA. Last year I was running prop tests in March; this year I'll be happy of I can hit the lake in April!
Jeff
Yeah it is a really bad winter! Where about do you live in the north east? How far from New Brunswick canada ?
Fastjeff57
04-06-2014, 10:27 AM
Far as I can get! (It's cold enough here, thank you!)
Eastern, PA, near Allentown.
Jeff
nhpoplin
04-07-2014, 07:51 AM
Wow i wouldnt know what to do if it got that cold here in SC. I enjoy running and testing the boat when its cold. Well "cold". If it gets in the 40s the river will be a ghost town. No spectators to witness a little testing hehe. Actually prefer it a little cold. When it gets in the 80s or more the river gets so packed with boats you can hardly run. Nothing like a 20ft center console running half throttle meeting you in a turn when you're mid race. Talk about an oh @%$# moment
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