Engine specs between years and making a big bore kit work.

Boost_Junkiee · Post by **Boost_Junkiee** » Sat Sep 20, 2008 11:19 am

So I have the * of Elites. A 1989 Elite SA50. I have not quite figuired out why i can't make a big bore kit work thats for an earlier or later engine and make something to allow to do so.

Anyone have pics or maybe know why this wouldn't be possible? Have pics of differences side by side or specs? I have acces to a machine shop and I am able to fab or machine anything that is needed. Maybe possibly make an adapter to allow it to be possible. But If its something that is way too difficult or costly I would rather not waste the money on a big bore kit to find out there is no way it can happen. I was guessing probably stroke diffences? piston dia. differences? head bolt location differences? Anyone:?:

Kenny_McCormic · Post by **Kenny_McCormic** » Sat Sep 20, 2008 1:03 pm

You have what is commonly referred to as a "SE50" motor, any pre 94 elite bore kit will bolt up. VTcycles just got in a shipment, run a high oil mix (25:1) and it will last a long time.

eclypse · Post by **eclypse** » Sat Sep 20, 2008 1:50 pm

Heres some info here on the differences.. http://www3.telus.net/dougsimpson/gasket.html

Also theres the trans gears that are also slightly different and the prob that you can only buy a upgraded gear set for 94+ SA50 Dio motors as well.. Though there are 1-2 guys that have machined some gears to work with the older motors.. though i believe they still used Dio stock gears and machined them to work with the SE50 motor.

FInd more info here: http://hondaspree.net/phpBB2/viewtopic.php?t=5275

Am i correct saying that putting a big bore into a pre 94 motor wont do much without an upgrade to the trans gears as well?

Dac · Post by **Dac** » Sat Sep 20, 2008 2:07 pm

eclypse wrote:Heres some info here on the differences.. http://www3.telus.net/dougsimpson/gasket.html

Also theres the trans gears that are also slightly different and the prob that you can only buy a upgraded gear set for 94+ SA50 Dio motors as well.. Though there are 1-2 guys that have machined some gears to work with the older motors.. though i believe they still used Dio stock gears and machined them to work with the SE50 motor.

FInd more info here: http://hondaspree.net/phpBB2/viewtopic.php?t=5275

Am i correct saying that putting a big bore into a pre 94 motor wont do much without an upgrade to the trans gears as well?

i had a 92 elite, same motor as the poster. i did a bore kit alone. Massive take off. The thing pulled like you wouldn't believe, but the top speed hardly went up. Then i added a high speed pulley. my top speed went up like 5mph or so, and the take off was still just as good.
I never did put gears in my bike. So i do know personally know how well that works.

PimpinSpree · Post by **PimpinSpree** » Sat Sep 20, 2008 4:55 pm

big bore/variator/gears

big bore 200ish
variator/gears 120ish
stock dio gears 130ish

that adds up to about 450, and it make your scooter pin the speedo all the way down. I have the same motor. Im still getting it tuned in, but its still pretty darn fast

Boost_Junkiee · Post by **Boost_Junkiee** » Sat Sep 20, 2008 7:49 pm

So I am confused. I have what is called a SE50 but my bike is a SA50? Doesn't make since but i know you have been around awhile Kenny so I will tke your word. Anyone have a link of the exact kit? Oh and thanks for the links eclypse

eclypse · Post by **eclypse** » Sat Sep 20, 2008 8:03 pm

http://www.vtcycles.com/news.php THey dont have it listed so you'll have to email or call them and tell them exactly what you have and what you want.

Boost_Junkiee · Post by **Boost_Junkiee** » Sat Sep 20, 2008 8:07 pm

eclypse wrote:http://www.vtcycles.com/news.php They dont have it listed so you'll have to email or call them and tell them exactly what you have and what you want.

I have heard good things of them but their website is * poor. I hope this is no reflection of the business. I will give them a call and get started.

eclypse · Post by **eclypse** » Sat Sep 20, 2008 8:15 pm

Let me know how it goes... I was hoping to score a 94-01 Dio motor for a nice winter project. Though i didnt know someone had a bore kit for a pre 94 motor for sale. Hopefully by the time i'm ready for it they will still have one for me.

Dac · Post by **Dac** » Sat Sep 20, 2008 8:42 pm

Boost_Junkiee wrote:So I am confused. I have what is called a SE50 but my bike is a SA50? Doesn't make since but i know you have been around awhile Kenny so I will tke your word. Anyone have a link of the exact kit? Oh and thanks for the links eclypse

your bike is a SA50, but since your bike is a 88-93 sa50, it had the same motor as a SE50. its just slang.

but yeah, VT is not the best when it comes to the web. but call them up and there awesome. when calling them you just tell them the year and the make and they will help you with everything. they are top of the line.

PimpinSpree · Post by **PimpinSpree** » Sat Sep 20, 2008 9:10 pm

Boost_Junkiee wrote:So I am confused. I have what is called a SE50 but my bike is a SA50? Doesn't make since but i know you have been around awhile Kenny so I will tke your word. Anyone have a link of the exact kit? Oh and thanks for the links eclypse

pre-94 sa50, se50 and nb50 are all the same motor. But if you just say you have an sa50 people will automatically think your talking about a 94-01 sa50 (dio)

Boost_Junkiee · Post by **Boost_Junkiee** » Sat Sep 20, 2008 10:12 pm

PimpinSpree wrote:
Boost_Junkiee wrote:So I am confused. I have what is called a SE50 but my bike is a SA50? Doesn't make since but i know you have been around awhile Kenny so I will tke your word. Anyone have a link of the exact kit? Oh and thanks for the links eclypse
pre-94 sa50, se50 and nb50 are all the same motor. But if you just say you have an sa50 people will automatically think your talking about a 94-01 sa50 (dio)

Gotcha, I am still learning the slang

Thanks for the help fellas!

scooterwerx · Post by **scooterwerx** » Mon Oct 13, 2008 3:06 am

malossi makes a big bore kit for the european vision, known in the usa as the aero 50 or elite lx. it bolted right up to my 87 aero 50, and i do believe it is the same motor as the elite lx. roselle imports in new york is one of malossi's usa distributors. http://www.malossi.com/Catalogo/Cata_Ma ... =31%206405

Post by **noiseguy** » Mon Oct 13, 2008 10:12 am

PimpinSpree wrote:big bore/variator/gears

big bore 200ish
variator/gears 120ish
stock dio gears 130ish

Keep in mind those gears will require machine work to fit them into pre '94 cases; read up on this site for details about the work involved. No big deal but they're not a drop in.

Dac · Post by **Dac** » Mon Oct 13, 2008 12:50 pm

PimpinSpree wrote:big bore/variator/gears

big bore 200ish
variator/gears 120ish
stock dio gears 130ish

that adds up to about 450, and it make your scooter pin the speedo all the way down. I have the same motor. Im still getting it tuned in, but its still pretty darn fast

dear god, i know you build up what you got, but $450?!?!?!?