Injector cupless lb7 heads!!
- Thread starter Diesel Technology Source
- Start date
Just started it this year.. Ive heard rumor that you have them already?? someone said that Buck had them is that you?
as Paint said Buck is my brother, he has been running some modded heads from TTS for a few seasons,they seem to have fixed the issue.
sounds like a no brainer for the guys with high hp lb7's. if i had a high output lb7 and was fighting constant cup issues, id pay twice what you're charging to never worry about it again. good work. doubt i'll be building a motor anytime soon, but when i do i have to fit these into the build budget somehow.
Great work! Interested in a set of your heads. truck now has 157,000 miles. I have a problem with my 01 lb7. 2-3 years ago, about 30.000 miles ago, I had a dealer in west plains, mo install a new fuel pump and regulator. After I pick up the truck, driving home, it went pow and blew white smoke and quit running. The dealer towed back, replaced injectors on drivers bank and fuel pump. He test drove and did the same thing again. He said both times it blew the tops of the injectors. Took left head off and it checked ok. Found out banjo bolt for return line on left head bottomed out and no fuel returned. Shimmed bolt and has run since. 6 months later in winter when below 40degrees, it misses and smokes white. Did a compression check and #4 and #8 cylinder have 280 lbs and rest have 360lbs. when above 40 degrees, the compression in those two cylinders come up to 310 and 320 lbs. Since the cylinders were overfueled, could it possible be the cups. If it probably is the cups, what are the symptoms of bad cups. When 45-50 degrees and above, everything seems normal.. If it sounds like cups, I would be very interested in purchasing a set of head. I will be pulling engine this spring when warmer. I'm thinking it could be a broken ring in whose 2 cylinders. Thanks rob
the idea sounds great , but how would you keep the threaded cup from being to deep or shallow , hence changing the spray pattern of the injector on the piston ??
Just the bottom of the cup is threaded...Keeps injector in stock location.
Your best bet is to call David. Shoot me a text and I will get you his number.
