Logo
FULL SITE MENU

Search results

  1. 8

    Trim Cyl Piston (help)

    Got a buddy with a bravo1. Trim cylinder has been leaking. After pulling the ram apart he found a broken/cracked piston. Been told you can’t buy just the piston and need to buy a whole new ram. Is there any truth to this? I’m finding it hard to believe!
  2. 8

    Old school steering

    My buddy has a 1983 Eliminator Monaco, it’s got a 350 with a Penta 280 drive. The threads on the adjustment tube of his steering actuator (boat has power steering) stripped out and nearly sent him into the beach. The threads are beyond repair and parts are nearly impossible to find. This is...
  3. 8

    Bravo leak question

    Have a friend with a 1999 Shockwave, 454 with a bravo drive who is having a issue with water leaking into the boat from the transom. Personally I suspect his bellows but he swears the leak is coming in from what I am assuming are two hoses for hydraulic fluid (one low press and one high press)...
  4. 8

    Lacking Mid Range Power (454)

    '87 Cobalt 454 w/ alpha1 Boat is lacking mid range power almost like a "dead zone" between 2000-3500 RPM. Like a misfire but way more subtle, more of a slight stutter or hesitation. When I push through it I can get passed said "dead zone" and she runs great in the top end. No backfires, carb...
  5. 8

    High oil PSI

    1987 cobalt 454 w/ alpha1 just replaced the engine with a new one (used). Engines in good shape, everything looked great. Real clean. fired up and am getting 70+ psi oil at idle. Replaced the pressure sender, still high. Should I be overly concerned about this?
  6. 8

    10.5” exhaust riser stud hunt!

    Got a 1987 cobalt, 454, alpha1. With GLM exhaust manifolds, 3 inch risers and elbows. I’m on the hunt for a 10.5” riser/ elbow stud. Normally the studs for the risers are 9.5” but I need two of them to be 10.5” to mount my remote oil filter off the elbow. My old one have toasted threads...
  7. 8

    Oil cooler fit issue!

    So I’m assembling a new engine for the boat. Gen4 454 1987 cobalt with alpha1 drive I Just realized this block has a “shallow lip” where the adapter goes. Meaning it’s not deep enough to seat the adapter for the remote oil filter. I’m assuming this is just a difference between blocks and...
  8. 8

    Ignition control module

    what’s up guys! ‘87 cobalt alpha1 drive 454 BBC Boat runs great till I stop and hang out floating or beached for a while, then it has a misfire condition around 1500 rpm. Now here’s the interesting part. If I keep the engine hatch open while hanging out (floating or beached) the misfire...
  9. 8

    Bravo3 XR question

    Recently rebuilt a bravo3 for a guy, once installed back on the boat I noticed it wouldn’t go into forward (throttle will not budge at all). Reverse and neutral are fine. Odd thing is, when I removed the rear cover off the drive to expose the “shift mechanism” the drive will shift into forward...
  10. 8

    Weird!

    New engine in the boat, (454 mercruiser in a ‘87 cobalt). Having a slight issue. Once the engine warms up I get what im assuming is a misfire (engine studders) between 1500-2000 RPM while at the same time the needle on the voltage gauge bounces around like crazy. Any ideas? Where would you...
  11. 8

    Bravo 3 question!

    Bravo 3 drive removed from boat, What position should the shift linkage be in for neutral? All the way out, all the way in, half way? been playing around with it but can’t seem to find neutral. Wondering if there is a issue and couldn’t find anything online. thanks in advance!
  12. 8

    Oil cooler

    Can a bad but seemingly not blocked oil cooler cause a slight over heat condition??
  13. 8

    Hoist fears

    Got a fully dressed 454 on the stand ready to go back into the boat.. (aluminum intake manifold) would you guys trust a intake mounted lift plate? Or go with a chain bolted to the heads? the lift plate says 1000+ lbs, even with an aluminum intake. Seems sketchy to me, just curious how you...
  14. 8

    Bravo 3 killing me!

    Took on a project for a buddy and it’s been a nightmare. Bravo 3 XR Long story short we ended up ordering new housings and swapping the internals from the old ones to the new ones. The “new” upper was used and showed up looking like someone drilled out the top vertical shaft bearing race. I...
  15. 8

    Penta 280, what’s it worth?

    Recently gutted a old boat with a vovol Penta 280 out drive. This is the older drive, single prop with electric tilt and no power steering. question is, what would you value the transom assembly, drive and flywheel housing at? Everything is in decent shape, needs a little love but everything...
  16. 8

    454 to 350 question

    Looking for advice on what it’s going to take to go from a 454 down to a 350, what should I be expecting on both install and performance? Can it be done or is it going to be a major headache as far as mounting? Will it line up with the old foot print of the 454 Boat is a 23 foot cobalt with a...
  17. 8

    Rebuild question

    So I’ve decided to rebuild my engine, for no other reason then piece of mind. Got a ‘87 cobalt with a 454 and alpha1. She’s a mature lady but she runs well. I pulled the engine and tore it all down, no signs of hot spots, cracks or anything like that. So things look good. The plan is to have...
  18. 8

    454 upgrades, worth it?

    So I have my engine pulled apart, basically just trying to freshen it up. Bearings, rings, seals etc. Been wondering what upgrades are out there that will offer a little more power that are worthwhile. Is there any point changing out to a mild cam? Intake manifold? Heads? Not trying to build a...
  19. 8

    Auto vs marine circulating pump

    Can a automotive circulating pump be used instead of a marine pump? 454 with a alpha1
  20. 8

    Stumped

    Merc 454 alpha 1 still overheating with thermostat installed. Remove thermostat and it runs perfectly @ 160* with no overheating at all. New impeller impeller housing thermostat housing exhaust manifolds risers and elbows circulating pump Verified no obstructions along the water path from...
Back
Top