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  1. ROCK HARVEY

    Rear lift block question

    I D60 swapped my 89 f-250 last weekend, and now I’m looking at rear lift blocks to raise the back end since the swap raised the front end by 2ish inches. I’m seeing a lot of conflicting info online regarding whether I should get tapered lift blocks or flat ones. It appears that at least from...
  2. ROCK HARVEY

    Intake manifold gaskets on Amazon

    I check Amazon and Rock Auto from time to time to see if they have intake manifold gaskets back in stock, and it looks like Amazon finally does: https://a.co/d/1Y6pUld For those who haven’t been following, these all went out of stock back in 2020 and for a while you couldn’t get them anywhere...
  3. ROCK HARVEY

    Custom instrument cluster build

    I’ve been kicking around the idea of a custom gauge cluster for a couple years, and I decided recently to go ahead and attempt it. I learned some things along the way, so I thought I’d make a post to help anyone else wanting to tackle this project. My reason for doing this is that the flexible...
  4. ROCK HARVEY

    CDD injection line issues

    I ran into a frustrating issue tonight and I wanted to see if anyone else has heard of it. My #1 injection hardline has been messed up and leaking for a while, so I bit the bullet and got a whole new set from Classic Diesel Designs. I was warned ahead that new lines aren’t bent accurately and...
  5. ROCK HARVEY

    Head gasket ruined?

    I’m doing some work on my truck, including head gaskets, and at the end of a long hot day I realized I torqued down one of the heads without checking whether I put the gasket on right side up or not. I’m definitely pulling the head off again to make sure, but is the head gasket OK to flip and...
  6. ROCK HARVEY

    Reuse this injector?

    I’m doing my head gaskets this weekend, and ran into my first trouble when pulling the injectors. One of them came out in half, which stinks but I know what to do. The one I have a question about is this one. Is this a sign the injector isn’t sealed internally or something like that? Would you...
  7. ROCK HARVEY

    Exhaust manifold bolts discontinued

    Hey guys I’m gathering parts to do my head gaskets, and it appears that the exhaust manifold bolts (Part F4TZ-9S425-B) have been discontinued. Have you guys had luck re-using your old ones? I understand that the bolts are a special interference thread to keep them from backing out. Has anyone...
  8. ROCK HARVEY

    IDI marine engine questions

    I came across a 7.3 IDI boat engine locally for $250. The guy is selling it because the water-cooled exhaust manifold cracked and apparently they are impossible to find. I’m interested in building an engine to drop in my truck, but I want to ask the group whether it would be a mistake to pick a...
  9. ROCK HARVEY

    Water leaking into cab

    Since I patched my floorboards and replaced the carpet, I’ve been chasing and sealing water leaks into the cab. I re-sealed my drip rails that were leaking down the pillars, and I re-sealed the cowl that was leaking next to the trans tunnel. I thought I had everything sealed, but last time it...
  10. ROCK HARVEY

    IDI to Allison adapter valuable?

    I’ve been on the lookout for a spare IDI engine to rebuild, and I came across a 7.3 out of a school bus. It had an Allison mt643 transmission behind it, and the engine still has the adapter for that transmission. Are these adapters valuable? Interestingly the engine also has a turbo exhaust...
  11. ROCK HARVEY

    ZD-29 glow plugs?

    Apparently ZD-9 glow plugs are being superseded with part # ZD-29. Has anybody bought the new ones? Do you notice any physical difference between them? ZD-9 plugs are still available, so I’m debating whether I should buy a set, or trust that the new ones will be just as good (or better?). What...
  12. ROCK HARVEY

    What is this part?

    I was getting ready to do some testing to see why my cold idle isn’t working, and I saw this small box-looking thing just behind the thermostat housing. It has 4 wires going into it, is it a relay? I’d like to know what it is because it looks semi-melted and I’d like to replace it.
  13. ROCK HARVEY

    Intake gaskets in stock

    Just wanted to let you all know that rockauto has intake gaskets in stock right now! They are listed as “wholesaler closeout” so who knows how many they actually have. Get ‘em while you can!
  14. ROCK HARVEY

    How to check motor mounts?

    Just like the title says I’d like to know if there’s any way to check whether my motor mounts are bad. I’m replacing a zf5 transmission with a cracked housing, and I’ve heard that bad motor and transmission mounts can be partly to blame. I’m putting in a new transmission mount with the...
  15. ROCK HARVEY

    4x4 zf5 output seal PSA

    Just wanted to share a lesson I learned putting a new output shaft seal in my 4x4 zf5-S42. Some brands add a lip around the seal to make sure the seal seats parallel to the bore. On my transmission this put the sealing surface in the wrong place, where the output shaft is starting to taper...
  16. ROCK HARVEY

    Running new motor oil vs waste motor oil?

    Like many others I’ve been tempted to save on fuel costs by running a waste oil mix, but I’ve never done it because the carbon in it is bad for the fuel system. But now I found a shop closing down near me that’s selling 325 gallon bulk containers of clean, new Valvoline 5w-30 motor oil for $650...
  17. ROCK HARVEY

    Zf clutch fork pivot ball

    I’m buying parts to rebuild my zf5, and I’m having a heck of a time finding a clutch fork pivot ball/stud. It’s ZF part #1307-301-011, Ford part # E7TZ 7B602A. It’s been discontinued by Ford for years. Several companies claimed to have it in stock online, but none of them actually did. Has...
  18. ROCK HARVEY

    Timing at 8.5 or 9.5 degrees BTDC?

    I have a Kent Moore timing setup on the way, so I was reading the tech article on how to to set the timing on our trucks. The article mentions how some people prefer to set their timing at 9.5* BTDC rather than 8.5. What’s the advantage to this? Does slightly advanced timing give more power, or...
  19. ROCK HARVEY

    Damage inside differential, what to do next?

    I bought my truck a couple months ago, and have been doing all the fluid changes and routine maintenance stuff. When I went to change the differential fluid, I found some strange damage inside. The cover has a deep dent from the inside, and one of the pinion teeth is chipped (pics in next post)...
  20. ROCK HARVEY

    Zf5 from a 460 truck

    I bought a non-running truck (89 f-250 4x4 5 speed) exactly 2 months ago, and have been going through the process of getting it fixed up. I got the engine running, but have only driven it a couple times for short distances. The transmission seemed loud to me, but it has a solid flywheel...
  21. ROCK HARVEY

    Make door striker bushings from PEX tube

    I apologize if this is already common knowledge, but I discovered that you can make new door striker bushings from 1/2” pex tubing. It fits tightly on the striker; I had to tap it on with a 1/2” deep socket. My doors don’t rattle anymore, and I don’t have to slam them closed anymore either...
  22. ROCK HARVEY

    New air cleaner lid?

    I decided to re-paint my rusty air cleaner housing, and when I took a wire wheel to the pitted areas I discovered that it had rusted all the way through. Does anyone know of an aftermarket lid that will fit on the stock housing? I could fill the holes with my welder, but if there’s a drop-in lid...

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