Vacuum pump, high altitude, methanol

Old 06-11-2019, 07:26 PM
  #1  
jmbr0828
Junior Member
SHOW GUEST
Thread Starter
 
Join Date: Jun 2019
Posts: 1
Default Vacuum pump, high altitude, methanol

Hey guys, I'm running a 606 Ford, 15:1 compression, trick flow heads and intake. I had an aerospace components vacuum pump locked up on me, and replaced it with a moroso 3 vane vacuum pump. I didn't have a vacuum gauge when I was running the old pump. When I first put the moroso one on, I ran the fastest pass I've ever made,7.765 at 6400 ft DA, but since then, it has slowed up to around 8.0. in similar conditions. My Max vacuum reading is 7 inHg. It looks to be fluctuating while going down the track, and it seems like it is not pulling vacuum at idle.

My question is, what is a normal amount of vacuum to pull with the moroso 3 vane pump on methanol? I can't seem to find any information on how much it'll pull.
jmbr0828 is offline  
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -