Hello All, I've been lurking on this forum for some time now and I finally have something to post about I recently bought an Ultima 131 and I'd like to change a few things 1.Lifters 2.Rocker Arms 3.Push Rods 4.Carb And have the heads ported and polished! I'd like to run a D carb definitely, my concern is who's parts should I change the ultima parts out for? Thanks

 

Ultima rocker arms are a more aggressive ratio and will need to replace the cam unless you use the same ratio of rocker arms.

As far as replacement parts for a big cube engine, S&S comes to mind for performance and best chance of holding up.

 

I can't give any advice on your question but I respect the general statement:

"I just bought a monster engine, now help me spend more money to make it go even faster"

Good luck brother

 

Call Scott over at Hillside cycles and he will set you straight

http://www.hillsidecycle.com/

 

Thanks for the suggestions and i'll contact Scott @ Hillside and see what can be done to keep this Monster together Thanks

 

+1 on giving Scott a call....Also look at a tubo for it, as that may help bring it to life.

 

Isn't a Ultima 131 already full of power?

 

I have been in yr boat.mine is the 127 . I put in Jims tappet blocks redshift 656 cam re-used ultima / crane adj. pushrods. the johnson roller rockers are good but Jims are the bomb. I wouldnt reccomend the d carb unless you are just wide open drag racing. The D carb doesnt have an accelerator pump = shitty in town 2k-3k riding use a super G or a mikuni 48. throw the thunder start battery away if you orered one from Jireh. Get the "lightning start" 500 cca for that beat {ebay 113$ delivered) what frame are you using?

 

It's all going in a 98 roadglide, so Brad75raiders you say the Ultima pushrods are a keeper I'm going to follow those suggestions! As far as the starter I was gonna use the factory starter I've been told they'll crank this beast just fine. Now as far as cam choices I was thinking of using a Leinweber E9 and using his springs and changing out the Ultima coil and using a dyna 2000i and after all of this is done I might as well use the Mik 48 because I shouldn't notice the Hp/Tq loss from the switch from the D carb,by the brad75raiders how's your monster running any issues? Oh yeah Traildog it has owner but for my own comfort I'd like t change out the parts mentioned! Thanks everyone pls keep the suggestion coming

 

@ GraemeR I'm really aiming for a naturally aspirated Beast hey but if it's not enough which I'm sure it will be you never know Thanks