It is currently May 13th, 2024, 5:24 am

LIGHTENING A FLYWHEEL on late 56 cu in omc

View active topics

All times are UTC - 5 hours [ DST ]


Post new topic Reply to topic  [ 6 posts ] 
Author Message
 PostPosted: October 19th, 2015, 6:34 pm   
Member
User avatar

Joined: September 15th, 2015, 2:35 pm
Posts: 392
Location: Slough, England UK
Has anyone here lightened a flywheel from a late model 56 cu in omc (oval port)
I have an idea these flywheels are cast, they are pretty heavy and wondered about making it a touch lighter.
I don't want to go changing the flywheel and all the gubbings under there.
But a touch lighter might give it a bit more zing for pull away.
I know it wont idle as good as a heavy one, but these are VERY heavy for a small motor.

this is the type of flywheel I want to lighten if its possible.

.
Image


Top
 Profile Send private message  
 PostPosted: October 19th, 2015, 9:48 pm   
Member
User avatar

Joined: August 12th, 2012, 8:37 pm
Posts: 2699
Location: lake Muskoka
you would have to run a scatter shield.. :P

_________________
Image
89 excel 91 valero,81mph sold
1988 baja x 15, chopped to 13'11" modvp Bridgeport 91mph
19' tempest picklefork 84 mod vpcarb 102mph


Top
 Profile Send private message  
 PostPosted: October 20th, 2015, 7:33 am   
Member
User avatar

Joined: September 15th, 2015, 2:35 pm
Posts: 392
Location: Slough, England UK
what the f*** is a scatter shield :shock:

or do you mean it would break up if I try to cut a bit off ?

maybe best left alone on that idea then


Top
 Profile Send private message  
 PostPosted: October 20th, 2015, 8:26 am   
Member
User avatar

Joined: August 12th, 2012, 8:37 pm
Posts: 2699
Location: lake Muskoka
:lol: i was wondering the same thing :lol: iv seen some 56er flywheels cut. i noticed one had half the ring gear milled off 1 and tapered off the top of the flywheel i tiny bit.. it did not look the exact same as yours tho.. :? it was on an sst60.

_________________
Image
89 excel 91 valero,81mph sold
1988 baja x 15, chopped to 13'11" modvp Bridgeport 91mph
19' tempest picklefork 84 mod vpcarb 102mph


Top
 Profile Send private message  
 PostPosted: October 20th, 2015, 1:49 pm   
Team Member
User avatar

Joined: April 3rd, 2012, 7:53 pm
Posts: 406
Location: Lakeport, MI
the 1972 49ci had a 9 lbs flywheel that fits in place of the stock 10 lbs one. I have also seen them turned/chamferred down on the top outer ring so the ring gear is left with 1/4" teeth.


Top
 Profile Send private message WWW  
 PostPosted: October 20th, 2015, 2:52 pm   
Member
User avatar

Joined: September 15th, 2015, 2:35 pm
Posts: 392
Location: Slough, England UK
the 1972 flywheel from the old 49cu in wont go on my engine without lots of mods.
different underneath the flywheel.
the older 56 cu in ,yes they could go on those but not on these ones.
different stator altogether.

the later sst60 should be the same as my flywheel, I have not seen any of those cut yet.
some sst60 have flywheel with teeth about 1 inch thick.

some of the older ones were either alloy with the steel inserts or a steel flywheel.
I am pretty sure this one is made of cast iron .

lightening it was just a thought, and just a pound lighter is not worth the hassle.

probably best left alone until I find someone who has done one of these very same
wheels and see what their results were/are.
But if only a pound I wont bother.
.


Top
 Profile Send private message  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 14 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  


Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Style originally created by Volize © 2003 • Redesigned SkyLine by MartectX © 2008 - 2010