Search results

  1. M

    No Fuel Pressure!!!!!

    HI ALL,<br />I had the boat out on the lake this weekend to start the break-in procedure. The fuel pressure was 6 psi when I launched it on Saturday. I ran the engine for 10 minutes then the pressure dropped to 5.5 psi. That's fine. I started the engine today for another run, the pressure was...
  2. M

    1985 454 7.4L TIMING

    hi,this engine has been through hell and back, 3 rebuilds in two summers.i just need some advice on setting the timing.in going to buy a timing light tomorrow .on the thunderbolt iv there is a stamp that says V824. the last two digits [24] <br /> is this my total timing? 8 deg TDC + 16 deg=...
  3. M

    HIGH FUEL PRESSOUR

    HI,how do i fix a high fuel pressour problem? The fuel pressour is 7psi to 6.5psi .The max fuel pressour for the 1410 edelbrock is 5.5 PSI.could some one help .......THANKS
  4. M

    timeing setting for 454 7.4L

    HI all, the engine was fired up 2 hours ago,the michanic set the timeing at 12 degrees.is this the correct timeing for this engine? there is a thunderbolt IV and a mds blaster 2 coil ,edelbrock preformer 2 intake ,and the 1410 edelbrock 750cfm carb .i also used the A/C MR43T that bondo...
  5. M

    breaking in the 454 7.4L engine

    hi, im geting the engine installed,the michanic changed the bearings,new rings and pistons ,and valveseals,and a goob 4 main block .he said that he also changed the 1.7ratio aluminum rockers to stainless rockers ? i also noticed that the water jackets were silver ,should thise water jackets be...
  6. M

    ALPHA ONE ALIGNMENT TOOL

    hi, im looking to buy an alignment tool for my alpha one, i found one on e bay with a part #91-805475 A1 would this tool work on the alpha one? I FOUND THIS #ON THE OUTDRIVE 6758232 i dont know if this will help. i got a set of bell housing gasket with the # 27-94996T2.......thanks
  7. M

    rebuilding engine

    hi all, had the boat on the niagera river this weekend doing 4500 rpm when the engine came to an abrupt stop sounded like a conecting rod came lose. the water level came up and in to the new 1410 carb.its going in to the shop in the morning to pull the engine .would it be cheaper to buy a...
  8. M

    spark plug question

    I was running the 1980 454 bb 7.4L on NGK R5673-6 with a .035 gap, my plugs were always wet with gas, not to mention the gas in crankcase problem. I was reading some of the posts on this forum about spark plugs and found that BR6FS NGK are used on these big engines. I bought a set of these...
  9. M

    FUEL PRESSOUR

    HI, the engine is a 454 7.4L V8 GM 1975 i hooked a fuel pressour gague to the fuel line to the carb. my question is, the pressour in the fuel line should stay up after the engine has been shut down?......THANKS
  10. M

    GAS IN OIL CRANKCASE

    Hello Again,<br />I've just about run out of options on what's causing the gas to enter the crankcase. I replaced the carb, replaced the fuel filter/water separater, replaced the fuel pump, custom made fuel lines, new MSD 8.5MM plug wires, new distributor cover, new 14" air filter, new spark/...
  11. M

    FUEL FILTER/WATER SEPERATOR LOCATION

    i was wondering if it matters if i install the fuel filter water seperator at any location in the engine compartment ? or does it have to be a set distance from the gas tank and height with the fuel pump?/OR GAS TANK the boat is a 23ft wellcraft 454bb 7.4L ......THANKS
  12. M

    boging @4000rpm

    hi all my 454 gm1975 7.5l bogs @4000rpm then snaps out of it the boging last for around 2 seconds then it's fine.is this a gas or an electrical problem?how do i check the sparkplug wires [the safe way] for a spark?
  13. M

    454 Big Block 7.4L Gasoline in Oil

    Hello,<br />I finally got my boat in the water after having the lower portion of my engine rebuilt and last weekend I replaced the oil and filter and went out on the lake to try different prop sizes. On Sunday I checked my oil level and it was 2-3mm above the oil level mark on the dipstick and...
  14. M

    stainless 4 blade proper

    hi all, I have a problem finbing the correct prop for my 23' WELLCRAFT 1980 ,454 7.5L ,ALPHA 1 OUTDRIVE. this boat came with a 4 blade stainless prop 22pitch ,this prop gives 5000rpm and 53.9mph at WOT.cruse speed 3200rpm and 33.7 mph gps.a friend lent me a 25pitch marag stainless 3 blade to...
  15. M

    holley 3310-4 secondary not opening

    What would stop the secondeary from opening? We tested the diaphram by creating a avacume[by mouth] and noticed the diaphran's arm moveing up and staying up as long as we kept vacume. even at short high rev it would not open .all the links are free for every thing to move .thanks
  16. M

    interrupt switch and cabel adjustment alpha 1

    i have an 86-89 alpha 1 im trying to adjust the cable's .i went to mercstuff.com and did the lower shift cable adjustment.but their is another cable next to the shift cable, this cable has a barell adjustment and a stud bolt goes through it how do i adjust this cable. and what is that cable...
  17. M

    Wiring Diagram for Trim Sender Limit Switch

    Hello all,<br />I had the mechanic install 2 trim sender limit switches thinking that he would install the wiring. What I have is on the dash is the gauge with 3 wires, 1) purple which goes to ignition key, 2) a grey wire that goes to the killswitch on the transom plate (this is the switch that...
  18. M

    454 bb low oil pressure

    hellow all , i had this engine rebuilt twise. the first time when i bought the boat last year the oil line broke ,ran with out oil for 20min to get to land.the michanic said he's going to change all the bearings in the bottom half of the enging .took the boat out today,the oil reading is 40 psi...
  19. M

    Thunderbolt V Ignition Hook-Up to Coil

    Hello,<br />I just finished doing some transom work on my 23 ft Wellcraft and I forgot where the wires go from the Thunderbolt V to the Coil. The Thunderbolt V has 5 wires two of which go to the distributor, one is a ground pigtail which is grounded to the body of the thunderbolt 5 (black) and...
  20. M

    bleeding hydrolics system and powerstering

    i removed the hydrolic's from my 23 ft wellcraft to do a transom repair.whats the procedure to bleed the system hydrolics and the powerstering?
Top