lifted club cars - lifted ezgo
Home FAQDonate Who's Online
Go Back   Buggies Gone Wild Golf Cart Forum > Modified Golf Carts > Big Block Talk!
Big Block Talk! Everything about swapping a big block engine into your cart!



Post New Thread  Reply
Thread Tools Display Modes
Unread 12-29-2015, 08:07 AM   #1
??????
 
LostHusker's Avatar
E-Z-GO
 
Join Date: Sep 2009
Location: South TX
Posts: 8,617
Default 18HP Briggs

Ok, you all know that I have this motor in my cart. Here is what has been done to it so far.
High performance cam
Billit rods
advanced timing key
high rev kit
two barrel conversion
copper gaskets

Now on that note, a while back a member gave me a set of 16HP heads with aluminum rockers. I have read it seems that I would need to run premium gas on this setup but I would like some opinions on this setup and if there would be any concerns in regards to this? Currently the backlash on is set at .004 and .006, would this remain if the 16hp heads were installed as well?
LostHusker is offline   Reply With Quote
Alt Today
BGW

Golf car forum Sponsored Links

__________________
This advertising will not be shown in this way to registered members.
Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum
   
Unread 12-29-2015, 08:49 AM   #2
Gone Wild
 
Join Date: Oct 2010
Posts: 6,730
Default Re: 18HP Briggs

Quote:
Originally Posted by LostHusker View Post
I have read it seems that I would need to run premium gas on this setup but I would like some opinions on this setup and if there would be any concerns in regards to this?
87-octane is fine.
Depending on the cam, you may have to get creative with the valve adjusters.


Quote:
Originally Posted by LostHusker View Post
Currently the backlash on is set at .004 and .006, would this remain if the 16hp heads were installed as well?
I run .004" on both valves.
1989Marathon is offline   Reply With Quote
Unread 12-29-2015, 08:55 AM   #3
??????
 
LostHusker's Avatar
E-Z-GO
 
Join Date: Sep 2009
Location: South TX
Posts: 8,617
Default Re: 18HP Briggs

Quote:
Originally Posted by 1989Marathon View Post
87-octane is fine.
Depending on the cam, you may have to get creative with the valve adjusters.




I run .004" on both valves.
No enough room for the valves to lift?
LostHusker is offline   Reply With Quote
Unread 12-29-2015, 09:29 AM   #4
Gone Wild
 
Join Date: Oct 2010
Posts: 6,730
Default Re: 18HP Briggs

There is room.

If you look at Boke's build thread, you'll see what I did with the adjusters.
It depends on the cam grind.

1989Marathon is offline   Reply With Quote
Unread 12-29-2015, 10:48 AM   #5
??????
 
LostHusker's Avatar
E-Z-GO
 
Join Date: Sep 2009
Location: South TX
Posts: 8,617
Default Re: 18HP Briggs

The lope on the cam is right at .300.
LostHusker is offline   Reply With Quote
Unread 12-29-2015, 01:44 PM   #6
Gone Wild
 
Join Date: Oct 2010
Posts: 6,730
Default Re: 18HP Briggs

It's not so much the amount of lift that causes the issue.
It's how the cam is ground to achieve the lift that causes the issue.

You can grind a cam with the same base circle as a stock cam, but that will only allow a certain amount of lift until interferences occur.

To get around the interference issue, a cam is given more lift by reducing the base circle diameter. What this can cause is that the pushrods(while on the low side of the cam) are not long enough to reach the adjusters in the stock configuration.

1989Marathon is offline   Reply With Quote
Unread 12-29-2015, 01:51 PM   #7
Gone Wild
 
Vinny73's Avatar
Club Car
 
Join Date: Jun 2014
Location: San Diego,CA
Posts: 608
Default Re: 18HP Briggs

Nice rockers!!! Are the 16hp heads hard to come by?
Vinny73 is offline   Reply With Quote
Unread 12-29-2015, 01:57 PM   #8
Gone Wild
 
Join Date: Oct 2010
Posts: 6,730
Default Re: 18HP Briggs

16hp heads are easy to find.
16hp heads with aluminum rockers are harder to find.
1989Marathon is offline   Reply With Quote
Unread 12-29-2015, 09:25 PM   #9
VC 460 CLONE GONE WILD
 
raydhd's Avatar
Yamaha
 
Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 6,249
Default Re: 18HP Briggs

Quote:
Originally Posted by 1989Marathon View Post
It's not so much the amount of lift that causes the issue.
It's how the cam is ground to achieve the lift that causes the issue.

You can grind a cam with the same base circle as a stock cam, but that will only allow a certain amount of lift until interferences occur.

To get around the interference issue, a cam is given more lift by reducing the base circle diameter. What this can cause is that the pushrods(while on the low side of the cam) are not long enough to reach the adjusters in the stock configuration.

Would longer pushrods work?
raydhd is offline   Reply With Quote
Unread 12-29-2015, 09:29 PM   #10
Gone Wild
 
Join Date: Oct 2010
Posts: 6,730
Default Re: 18HP Briggs

Quote:
Originally Posted by raydhd View Post
Would longer pushrods work?
Yes. You can buy adjustable pushrods, made-to-length pushrods, or just move the adjuster lock nuts.
1989Marathon is offline   Reply With Quote
Reply
Go Back   Buggies Gone Wild Golf Cart Forum > Modified Golf Carts > Big Block Talk!


Thread Tools
Display Modes


Similar Threads
Thread Forum
What to look for when buying a Briggs 18hp Big Block Talk!
18hp Briggs Bogging Big Block Talk!
what clutch for 18hp briggs Big Block Talk!
briggs 18hp wiring Big Block Talk!
18hp Briggs for sale Big Block Talk!


All times are GMT -5. The time now is 08:36 AM.


Club Car Electric | EZGO Electric | Lifted Golf Carts | Gas EZGO | Used Golf Carts and Parts

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.