Ok ok I have a mikuni side draft carb on a 13B4-port with a SP. Now I've heard 4-6 psi with this carb and I need to replace my fuel pump ASAP. Now would a Holley fuel pump be ok? Or do I need a regulator?

 

if you purchase a holley blue you get a regulator with it... Otherwise.. yes you do need a reg.with a holley, most of them work at about 15psi

-James

 

Check Paul Yaw's website. He sugests a Carter pump and a regulator that will work great and be cheaper than a Holly Blue. I had a holly blue and it was just too much pump for my Dellorto, which I run at 2.5 psi.

 

you could get a holley red. they pump 7psi.

 

You can also get a Redline Weber pump. They run at 6psi and they fit in the stock location very nicely and you can re-install the cover over it..

 

Whats the ill effects of running to high of a pressure? Whats optimal pressure for 13b?

Thanks, Ed
SE 13b
Dellorto
Holley blue
purolator regulator

 

I forgot to mention I have 38mm venturis....if that matters any.

 

I forgot to mention I have 38mm venturis....if that matters any. I also heard something about GPH matters a lot as well.

 

just grab you a holley red and 0 - 7psi regulator and your set. no worries. you'll be fine OH YEA, and a fuel pressure GAUGE! don't be like me, YOU MUST HAVE A GAUGE!!!!!!!!!!!

 

yea I bought a fuel pressure gauge off ebay, the guy said it's from the company that makes greddy's but it doesn't have the name on it. http://cgi.ebay.com/ebaymotors/ws/eB...tem=2470196299 there's the item. I'm getting an isolator as well and mounting it in my car. It's gonna be sweet.

 

should be sweet.

 

do you think I can use an autometer fuel isolator with this gauge?

 

i dont see why not