1800cc F3

[nslowmotion]

Math

2+2-1=3 , NOW TAKE THAT !!!!!!!!!!!!:banghead::banghead::banghead::banghead:

 

[Bob Denman]

Bob, here's an easier one; .7854 X bore squared X stroke X number of cylinders. This was published in Hot Rod in the late '50s, works.

john

Thanks! :thumbup:
They're using some different manipulations around the entire bore (diameter), than I use with the radius....
We get to the same place!

 

[Bob Denman]

I was never much of a Math Whiz, and I'm certainly NO mechanic; but I DO enjoy practical applications for playing with numbers.
My most recent exercise involved building a 686cc engine, and putting it into my 660 Grizzly. (Yamaha came out with their own 686 with fuel injection, but it only had a 4-valve head...)
The 660s had the magical 5-valve on top of it, so after looking at all of the oversized parts that I could get; I went with a +2mm JB piston with a 10:1 squeeze, and a Raptor Bumpstick... (Cam)
This combination ran on 87 octane without a hint of pre-ignition, and it pulled like a freight train...
An earlier game involved turning a 439cc two-stroke snowmobile engine, into a 513cc monster.
That one required that the mounts for the connecting rods be moved out 1.5mm (for a 3mm stroke increase), and I had to overbore from 67.75mm, to 72mm. I knew that the cylinders had enough meat for this project, because they used it as the basis for other 72mm-pistoned machines.
We added over 40 horsepower to THAT one! :bowdown:
And it still runs today!

 

[SPYD3R]

BOB BOB BOB

Yup! I'm sure that he "heard about" a kit...


Probably from his ex-neighbor's Brother-in-law's eldest Son's ex-wife's Divorce attorney's maid's sister... :shocked:

Going from a 1330, to even a "nominal" 1800cc displacement would require that a whole lot more than just bigger pistons be stuffed into the engine...
In order to reach that displacement just with pistons; you'd need to be up in the 97mm size.
(Stock is 84mmm...)
There's just not enough room in the cylinder walls for that much slug!
Now; you either change the crankshaft, or at least change the mounting point of the connecting rods...
This is getting to be a mighty large project!

the KIT would come with larger jugs.... no boring out of existing jugs....
let's get back to the original question; HAS ANYONE HEARD ABOUT THIS KIT...?
dp

 

[PMK]

the KIT would come with larger jugs.... no boring out of existing jugs....
let's get back to the original question; HAS ANYONE HEARD ABOUT THIS KIT...?
dp

I have not heard about it. Did some searching in the Sea Doo world and did not see it either.

PK

 

[Bob Denman]

You're talking about perhaps a half-inch of increased bore diameter...
Will the bore centers even allow for that much extra slug, without going to a custom crankcase?
Sorry... I've got to throw the bull:cus: card on this kit's existence. :shocked:

 

[PrairieSpyder]

1800cc would be something that a lot of current owners may be interested in.

If its non-BRP modification, that is going to slim down the takers. Good by warranty and it is probably going to mess with other things as well.

I will have to adopt a wait and see on this one. But--I'm a waitin. :yes:

Me, too!

 

[pegasus1300]

Not for the 1330 but check these people out for the 900 series engines. http://zipperbigbore.com/

 

[GA-SPYDER]

If it's a kit, it probably includes bore liners, pistons, rods, and a stroker crank. Again, cubic money. Reminds me of when I was building engines, first question would be, how fast do you want to go, second would be, how much money do you have?

john

That was exactly what the local H-D Service Department said. About $3200.00 later, I have a '13 Roadglide with a stage 4 kit installed and tuned to 114 HP, 117 foot lbs. of touque! :thumbup:

 

[bscrive]

That was exactly what the local H-D Service Department said. About $3200.00 later, I have a '13 Roadglide with a stage 4 kit installed and tuned to 114 HP, 117 foot lbs. of touque! :thumbup:

Come on, if your touque was that tight on your head it would squish your brains out. :roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack:

 

[chris56]

just look on the ROTAX homepage .. you find this one :

https://www.rotax.com/en/products/rotax-powertrains/details/rotax-1503-ho-4-tec.html

 

[DrewNJ]

They have had the 1503 inline 3 since 2003 in the jetskis and still use it today. You'll never see it in the spyder and it will likely go away in the ski too. Everthing is slowely transitioning over to the ACE motors.

Sent from my SCH-I545 using Tapatalk

 

[Bob Denman]

Drew,
PM sent...

 

[GA-SPYDER]

Come on, if your touque was that tight on your head it would squish your brains out. :roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack::roflblack:

Where did I go to school? Tork, correct?
:roflblack::roflblack:

 

[DrewNJ]

Where did I go to school? Tork, correct?
:roflblack::roflblack:

Try again....[emoji38]

Sent from my SCH-I545 using Tapatalk

 

[Bob Denman]

That answer is okay...
If you were a fan of the Monkees!