Just wondering if it is possible to do a change over from the bottom mount starter on a 86 gsl 13b to a top mount without major changes and if so are they or can they be a good set up .

Reason for wanting to change over is the bottom mount starter tends to stick out a bit more than I would like . Also being out that far on a cross mount setup tends to make the bike center of gravity to far off ..

Everything seems to balance out nice with the starter sitting on top. Thanks Gerald m.

 

Wait... You have a 13B in a motorbike?
HD frame and transmisson?




Sorry if I am off topic.

 

Some of the early rotaries (-pre '78) had top mount starters, that's what the odd cutout above the oil filter pedestal is for, they kept it in the castings.

Isaac

 

 

Ahaha ^ I agree completely, I clicked on the thread just to see pictures!

 

[QUOTE=DivinDriver;11093315][/QUOT[


Be nice it's easy , have a good one Gerald m.

 

No your not off topic not to far anyway .. I suppose you want pictures too well here's two years worth https://www.rx7club.com/old-school-other-rotary-63/bike-dirt-drags-13b-na-936752/ enjoy I'm the boy that builds the boat and I'm the boy that sails her .

 

https://www.rx7club.com/showthread.php?t=936752
there's two years worth for you too. Have a good one

 

I'm plenty nice... I just want me some pictures.

"Dragon's Breath;" nice!

 

Ahhh Canadian drinking songs! But you gotta pronounce "boy" as "by".

sorry... I got a Newfie friend.

 

That's Stompin Tom's song .. Hey what's with those guys anyway the only time they admit to being a newfie is when there drunk or wwwhatever . In know a few of them , if your with more than one at a time it is almost overwhelming .

And I'm the BY that catches the fish and sends em home to Lizer

 

Too many Newfie jokes out there... Makes 'em shy unless they are in groups.

I live in SoCal and even I've heard of Newfie jokes.

 

That intake looks nice, but with the Carb on it, doesn't it interfere with something? Seems very tall.
Also, a two barrel Holley is going to perform very poorly on a 13B. Simply not enough air and fuel.

Perhaps you could go with Fuel Injection and save alot of room, and make much more power?
Congrats on the build so far.

 

The carb is a little high but the engine is very low so no it won't be a bother .As far as volume I have changed everything inside , there are no jets left power valve is blocked and there has been an enriching kit installed , check out carb enriching kit in my videos . According to the charts of air volume and air flow it should work fine . for a stock engine. This setup up has been used in the aircraft industry where guys are building their own light aircraft . It is a trial so we will see how it works ,, There will be no top tube for the frame so everything is open at the top , engine comes straight out the top .. Yes I have stated more than once that next build will be injection . But what about the top mount starter I can't believe how little the community knows about the subject ?? Thanks for the input Gerald m.

 

Not even I know about top mount starters, unless it's for the old twin dizzy 12A, which has a ring gear that is about 10mm forward or rearward of all 74 and later flywheels (can't recall which direction but remember it makes it incompatible). So I'd ask Atkins since they do top mounted starters on 74 and later engines for boats and what not. Also some race cars back in the 80s had small top mount starters. j9fd3s may have seen some.

 

I have had a few top mount setups. I still have a 4 speed gearbox with top mount starter (bell housing is removable like the later turbo models). The starters were very large and heavy. The automatic transmission starters were the heaviest of the two as the field coils were larger so they spun faster.