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  1. vroom ZOOM

    yamaha F250 DERATE to F225

    Hello, curious if it is possible to turn a yamaha F250 (3.3L) into a F225. The reason I want to do this is there aren't much F225s around for sale, but quite a few F250s. My boat is only rated for a 225.
  2. vroom ZOOM

    Vinyl ester filler over epoxy and gelcoat questoin

    Hi, two unrelated questions here for two different seadoos First question is can I use vinyl ester filler over an epoxy fiberglass repair? I have a bunch of the 3M marine filler and I really like how it cures fast and I can sand it and throw another layer on in 20 minutes or so. Epoxy with...
  3. vroom ZOOM

    axius TVM issues

    Hello everyone Looking for my next project boat, I came across a very nice 2009 searay 310. I might go look at it in person. Keep in mind, this is a PROJECT boat. It didn't sink or crash, but does have a TVM FAULT NONCRITICAL and TVMDRIVEFAILURE error. For those that are familiar with axius...
  4. vroom ZOOM

    MEFI 3 diacom capabilities

    Hi, will diacom allow me to check for spark on a MEFI 3 motor? The issue im chasing is no/intermittent spark while cranking. Its a late 90s 350 mpi with mefi3 and thunderbolt 5. The dizzy sensor is original but i'd like to check that the ecm is firing the coil alright before chucking parts at...
  5. vroom ZOOM

    Gateway not storing fuel used

    Hello, I decided to add an nmea 2000 gateway to my motor (115 optimax). The lowrance now displays fuel flow rate, and all kinds of other engine stuff, but the fuel remaining always shows 0. I tried hitting refuel to no avail, fuel remaining is still stuck at 0. There is a data field for fuel...
  6. vroom ZOOM

    1995 5.7 Mercruiser no start, no fire.

    Hello Ive been scratching my head over this one. 1995 5.7 with 4bbl carb and thunderbolt ignition. I am not too familiar with these things but I still am surprised why it won't run. The boat ran fine last week. This time it cranks and intermittently fires, but won't run. The accelerator pump...
  7. vroom ZOOM

    Velvet drive dipstick tool

    Hello once again. I was doing a bunch of oil changes on velvet drives and they all have the stupid screen that tapers down around the dipstick, which means I have to use a really thin tube to suck the trans fluid out. It takes a really long time with the thin tube, and I'd like to buy the...
  8. vroom ZOOM

    Oil filter socket

    Hey everyone I found myself doing a bunch of oil changes on mercruisers this year. (about 4 per day). A strap wrench doesn't always work the best. Does anyone remember what size oil filter socket mercruiser oil filters use? Thanks.
  9. vroom ZOOM

    Any tricks for wire corrosion

    Hi, I am working on the wiring on my boat. Some plugs got wet and the wires started to tarnish. No green corrosion, but the wires do have that black oxide coating on them. 1. Is there some kind of crap I can buy that will soak up the wire and stop the corrosion? 2. How long will these wires...
  10. vroom ZOOM

    I will settle all arguments once and for all! I BOUGHT A DYNO

    Ok, so when I saw a marine dyno for cheap I couldn't help but buy it. Yeah I know a thousand bucks is a lot for a tool for working on a boat, but a new one is 14 grand around here - so I had to buy it. Its a dynomite water brake actually meant for measuring power levels, so now I can actually...
  11. vroom ZOOM

    yamaha fourstroke crank bearings

    Hello, Im rebuilding a 2004 yamaha f150, can anyone please advise where to get new rod and crank bearings? Yamaha ones are NLA.
  12. vroom ZOOM

    Ignition system common failures? 1994 7.4GL

    Hi, this one has me stumped. Seems like im better at diagnosing efi motors than the carbed ones. I don't know the exact model number, because the sticker is long gone, but it is a 1994 7.4GL. The ignition system is NOT the EST, or the EEM version. Here is a pic of the motor: This thing...
  13. vroom ZOOM

    crank question

    Hello I got a bunch of free motors (3x 20MLHU, 1x 30MLHU). the 20s are pretty trashed, but I was thinking I could make 2 good ones out of 3. All the crank needs is the bearings on the crank replaced. How do I go about doing this? pic of one of the cranks: the 30 hp motor has good everything...
  14. vroom ZOOM

    Mystery corrosion. 2007 F150

    I found a free motor at the scrapyard (2007 F150). The lower unit looked good, without any corrosion at all, so it was a no brainer to load it up. It was partially disassembled, but with all the parts there. The oil was all milky. I pulled the head and found this: Funny that the anodes aren't...
  15. vroom ZOOM

    Need seat recommendations

    Hello! The seats on my tuffy are all ripped. I can't decide which ones are better. I'd like to stay within $200 USD if possible. Everyone says the centric II SAS is the best, but they don't make those anymore. So option 1 is the tempress probax. Looks nice, although the thing that puts me off...
  16. vroom ZOOM

    HELP - trying to drive in inner bearing race... NEED TRICKS

    Hi, im trying to drive in the inner bearing race and it won't go in. The outer one did, but I can't seem to get the inner one started. I tap one side in, and the other pops out. I need something from someone's sack of tricks!
  17. vroom ZOOM

    Boat TLC questions

    Hello! Well, the boat that stupid me tried to bring on a flatbed car hauler is finally here... albeit not on a car hauler. A boat trailer did the trick. Anyways, I thought I was buying a boat that was totaled for being rear ended so the engine was all messed up and the bow of the boat as...
  18. vroom ZOOM

    Transporting a 20' boat on a flatbed.

    Hello I got another boat... it was too good a deal to pass 🤪. No trailer on it tho. The boat is pretty far from me, so now I have 2 things: A boat without a trailer (2010 alumacraft 205 trophy) A flatbed truck that will pick it up. Question is: what is the best way to put the boat on the...
  19. vroom ZOOM

    Question about LU rebuild + getting ripped off on sale.

    Hello I am selling my boat (the tuffy) and it seems like I have milky oil. A buyer asked about it and I, like a dummy, told him it was milky when I drained it a month ago. Well now he calls me and asks me to drop 4k on the price so he can get a brand new lower unit. I'm pretty sure everyone...
  20. vroom ZOOM

    Can someone fix the homemade outdrive pressure tester links?

    ^^^^^^
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