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  1. P

    9007 Series l.e.d bulbs

    Got the best pattern on 9004 with HID's so will try same for 9007. Backup is Morimoto stroke 2 which switches LED from low to hi beam instead of moving whole bulb like some HID's.
  2. P

    Building a better db2

    Did the math, not as good as it looked. (13.5/2 +1tblsp)/32{tblsp/pint}=1/4 pint in 30 secs cranking NG
  3. P

    Building a better db2

    Well, no more IP questions from me, I hope, found a later manual for download which included good explanation of torque screw adjustment. Thanks all for bearing with me thru these. Also, only got 1/2 cup in 30 secs from filter inlet so will install check valves, when I find my tubing cutter.
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    Building a better db2

    Thank you and is this manual useful for just short of overhaul use? DB 2AJ 3AJ 4AJ 6AJ FUEL INJECTION PUMP no/for D-166, D-188 ENGINES And warmer fuel on truck vs test stand reduces flow because it increases leakage where, only in IP, or also injector return flow?
  5. P

    Building a better db2

    Test bench has only one delivery valve? Per injection line? In addition to IP? Piping diagram of test bench would be elucidating. As to leaking pintle, I though they all leak after some use, it's just a matter of how much. At some point it affects start rpm, no? Blocked return displaces...
  6. P

    Building a better db2

    1-I guess if I had a test stand and planned to put the IP on my truck I would try some runs with the truck injectors (on the stand). Unless I was paying for test time. Comment only because of noted stand/truck difference. 2-Are delivery valves just check valves and don't need balancing? Is...
  7. P

    Fan clutch upgrade...

    ifrythings,I guess what confused me is u said 6.4 shaft much bigger. That's what we want, right? So we bush down to IDI shaft. Found a 6.4 WP 20M away, will look at today, honeydo list willing, and get shaft diameter.
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    Fan clutch upgrade...

    Check this out, tell me that's not a bigash bushing on shaft. https://shop.advanceautoparts.com/p/carquest-new-premium-water-pump-t3127/10244781-P?searchTerm=water+pump
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    Fan clutch upgrade...

    ifrythings, I found and remember reading your post @ 6.4 hub which is why I checked one at Oreillys. The Murray version they had used ~ 1" shaft and I don't recall bushing but some Airtex pumps on ebay show bushing between smaller shaft and hub. Sizes look about right. Looking for a bushed 6.4...
  10. P

    Fan clutch upgrade...

    Thanks ifrythings, did not know @ edit vs new post and for 6.4 pulley info. i missed hub info I guess, will search. Was looking at bare pumps in Oreillys. I am not too proud to braze or tack the 7.3 pulley to 6.4 hub and press on to correct depth if needed. Have a new FORD WP on the way for...
  11. P

    Building a better db2

    Actually I planned to input that port. Later.
  12. P

    Stuck on water pump change

    Two wrenches with one slipping off was a pain. Managed to wedge some foam insulation between clutch and one on bolt heads to hold in place while holding tension on nut and beating on wrench, first time with Oreillys wrenches. Next time with Autozone set it started rounding off nut due to wear...
  13. P

    Sucking air/Losing prime

    Diaphragm leak and early detection of same is what stop valve after LP is for. Manual or solenoid stop and gauge between will show leak down which has to be visible or into crankcase :)
  14. P

    Fan clutch upgrade...

    Really, no response, am I preaching to the choir or off my rocker or what? If not tried/failed before will let you all know how it comes out.
  15. P

    Stuck on water pump change

    removed double post
  16. P

    Stuck on water pump change

    If you find it hard to push on one wrench and pull on other, like I did, try tying one down over fender to tie rod and pulling on breaker with both hands. I did not put locktite on when reinstalling last time :rolleyes:
  17. P

    Leaky 6.4 Water Pump

    Yes, but only a bad/leaky one and not the suction/discharge casting, only the pump and really only the HUB & PULLEY. Need one to mock up/measure and build an adapter for 6.4 fan clutch to 7.3 WP:)
  18. P

    Stuck on water pump change

    What worked for me (after I put locktite blue on it):eek: was leave belts on and tighten belt with breaker bar on tension pulley, beat hell out of wrench on 1-7/8" (not 48mm as in autozone rental tool set) nut. If rounded use pipe wrench on it. Thought about tack welding flat bar to nut if...
  19. P

    Sucking air/Losing prime

    I think will try external check valves to see if flow improves from weak LP. Pics to follow.
  20. P

    Building a better db2

    Thanks ifrythings, was hoping that was the case, have a somewhat outside the box use for that port.
  21. P

    Some injector trivia

    "Similar pressure" kind of implies near transfer pump pressure but seems like plugged injector return system o rings would not sustain anywhere near that before IP is shut down, unless TP pressure low at idle (20-50psi WAG). Ok, it does not take much of a blockage of IP housing return to...
  22. P

    Building a better db2

    I guess I should have worded it how I thought it. Can I measure transfer pressure on stock db2 without drilling the case? It would seem that IP delivery valves would isolate TP from any differences between test stand and truck but obviously not. A small accumulator in pressure test line would...
  23. P

    Building a better db2

    Found this looking for db2 internal operation and your mention of transfer pump spikes generates this question. Can transfer pump pressure be measured external to a stock db2. Can case be drilled/taped to access this pressure. If so, why would not a small accumulator absorb spikes and prevent...
  24. P

    Sucking air/Losing prime

    Ok, getting a handle on this system I think. Since I have a OEM style LP with minimum, measured, flow and still working on good epump, plan to install early LP leakage detection and flow increase system. Details with pics AFTER installation/testing.
  25. P

    Some injector trivia

    Hope this is not a useless bump. So, in between injections (POPs) is there any constant pressure in the injection lines and thus constant flow in return? Not just flow on injection pulse. Why is injection stopped if return blocked, seems like only would retard time, maybe a lot? So smoke, no...

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