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  1. Scott06

    Carbed Mercruiser 260 5.7L Missing Above 4000 RPMs

    No need for a new carb just clean and rebuild yours. places like mikes carb parts have rebuild kits (gaskets needle seat and accelerator pump). If this carb only worked 3-4 times then had issues you have fuel system contamination , buy a new carb and its passages will be plugged soon too. Need...
  2. Scott06

    Carbed Mercruiser 260 5.7L Missing Above 4000 RPMs

    Heres a tuning guide that shows the theory of operations. Yes siphoned through the jets and out the venturis primary during low speed and as rpm increases as airflow requires the secondaries start to get airflow the sediment you see is probably clogging and causing some of your issues...
  3. Scott06

    1992 Mercruiser 4.3 w/ balance shaft and 1 piece rear main seal swap to newer year Vortec.

    Yeah based on that info if your engine compartment and stringers are set up for a 5.7 go that route. You will not regret doing that.
  4. Scott06

    Overhauling my 1988 Alpha One Drive Train

    No what hardware are you missing ? Its a 1/2” x20 bolt that goes in there so its a clearance hole for that size
  5. Scott06

    2012 Starcraft Limited 2000 I/O Question

    Willing to bet if it is a carburated 190 hp you have a 1.81 drive, if you have an mpi a 1.62 drive but chris is right before you go prop buying whats your current prop design (aluminum or stainless 3 or 4 blade) and pitch plus current wot rpm. Are you looking for a replacement or to solve an...
  6. Scott06

    2000 Searay vapor lock

    What the guys are looking for is an engine serial number or is the engine carb, efi, or mpi the answer you get will depend on what fuel system you have
  7. Scott06

    2016 4.5L mercruiser i/o Very weak performance

    What is current prop a 3 blade aluminum? Agreed staying with a 19” three blade or a 18” 4 blade like this if you want more hoelshot or focus on water sports http://boatpropellers.iboats.com/Michigan_Wheel-Vortex_XHS-Propellers/992203/?cart_id=252814407
  8. Scott06

    Flame Arrestor w/Fuel Vent Connection

    Bout halfway down this page shows the location of the overflow tube on a marine 4160 https://marinecarburetor.com/Y41-4160MercruiserOMCVolvoPenta.htm
  9. Scott06

    Flame Arrestor w/Fuel Vent Connection

    Normally the fuel pump vent line goes on a barb on the carb around the airhorn Not on the flame arrestor If your carb doesnt have a barb it is possible that some one swapped in a non marine carb which is hazzardous. Do you have a pic the your carb without the flame arrestor on it
  10. Scott06

    1992 Mercruiser 4.3 w/ balance shaft and 1 piece rear main seal swap to newer year Vortec.

    As others have said the 5.7 swap is very doable if you have 5” additional space in front of the engine. and the side motor mounts move forward bout 4.5” I did a 4.3 5.0 swap. Took all accessories over wiring harness etc used a partial engine package from michigan motorz and added exhaust...
  11. Scott06

    Power steering fluid leak

    Had the same thing on my neighbors volvo 4.3 last summer couldnt find the PS leak every hose clamp on that engine was loose.
  12. Scott06

    Engine struggles to turn over

    Great
  13. Scott06

    Mercruiser 4.3 cracked intake manifold

    I believe michigan motorz sells that intake
  14. Scott06

    Mercruiser 4.3 cracked intake manifold

    Is that a water passageway or exhaust cross over? If that has raw water in it then yes that is what did you in. At this point get the sludge out and replace with kero and oil as quickly as possible, likely you will be ok bearing wise. Only one way to find out... be prepared to do 3-4 oil changes...
  15. Scott06

    Carbed Mercruiser 260 5.7L Missing Above 4000 RPMs

    A couple of troubleshooting thoughts come to mind. - measure fuel pressure when this happens - you mention the new carb worked for three times then started acting the same- possible that debris in fuel system pugged this carb same as the Q-jet? Might be worth lifting the fuel bowl cover to...
  16. Scott06

    Difference between 4.3 engine 090 block and 090M block

    this is more like GM inching its way to insanity. I can understand one or the other system but to have some fasteners metric and some inch on the same block is goofy.
  17. Scott06

    Head gasket? Cracked head?

    Did you look at michigan motorz re lead time? i think you will be wasting your time jb welding that crack
  18. Scott06

    Head gasket? Cracked head?

    I would replace all of it including the manifolds. Not much cost diff between a short and long block .
  19. Scott06

    Holley carb on Volvo Penta 3.0 GSM-A will not idle

    Did you adjust the throttle linkage to close all the way or disconnect it ? At 1000 rpm youll be off the idle circut and into the transition circuit so the idle mix adjustment wont matter not sure if these holleys have a idle air bleed that bypasses air around the throttle blades ? Did you...
  20. Scott06

    1998 4.3gl engine replacement with Edelbrock 4B carb

    Since these double flare fittings are the same as brake lines probably a decent auto parts store would have them or...
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