Null


Burnt intake valve question

  • 1 Replies
  • 233 Views

Carreraelite509

  • Join Date: Aug 2018
  • Location: texas
  • *
  • Newbie
  • *
  • Posts: 1
  • Karma: +0/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 0
« on: August 29, 2018, 09:42:39 PM »
I recently had a fresh valve job and new valves put in my bbc

After about 10 hours of use
I noticed a drop in performance.
I performed a leak down test and found out I had a bad burnt intake valve.
 Pulled the head and confirmed the intake valve/seat let gasoline come out when poured in intake.

Jetting is correct
Timing is set at 32 total
Never gets above 150 degrees
And has about 4 psi water pressure at idle.
Itís a hydraulic roller motor and valves were lashed correctly 
Any one know of another reason the valve could get burnt ?

Thanks for any help



Tahiti1971

  • Join Date: Jun 2018
  • Location: Central Ohio
  • *
  • Newbie
  • *
  • Posts: 37
  • Karma: +1/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 0
« Reply #1 on: August 30, 2018, 07:18:47 AM »
What brand of valves were used?


Sent from my iPhone using SoCal Jet Boats
  • Boat #1: 1971 Tahiti

 


Website Security Test
Powered by EzPortal
Website Security Test