Offshoreonly.com

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   Drilling a Hole in Intake manifod (https://www.offshoreonly.com/forums/general-q/203713-drilling-hole-intake-manifod.html)

qaberdeen 02-24-2009 11:33 AM

Thanks for all the responses..

The thing is that i Live in Bermuda and it's hard to find quality mechanics because most people down here run out boards and it's only a few stern drive performance boats.. which r efi's or running the cross over system.
i was running a 7.4l MPI and the engine builder built this motor like the 7.4l so i guess i could swap over things. the only thing is i have to finish the plumbing..and i don't want to drill anything..

but it sounds like i don't have to..thanks for the advive. bear with me if i don't comprehen everything, but in a nut shell.. i can plumb the engine as is. i just block off the top of the cir pump and run the hoses the same way..coming up from oil cooler to front right T- housing- out thru d other side to the bottom left side of the cir pump, which puts water into motor. the other two smaller opening r for the hoses from the exhaust manifolds. what temp would i use for the thermonstat 142, 160, 180.. i think i might be a visual learner..lol but correct me if i wrong, is this right or am i close.
thanks
q

qaberdeen 02-25-2009 01:39 PM

Nordicflame,

did u build those motors in the pics

Nordicflame 02-25-2009 01:54 PM

1 Attachment(s)
Yes we did...
And two of these....
It's been a busy winter! I'm ready to go play:ernaehrung004:

Dave

qaberdeen 02-25-2009 02:09 PM

wow, I want to go and play as well. i spent the past summer on dry docks so u know i'm itching to go..:-)

am i close in post #21 because i ready to start building..

q

qaberdeen 02-27-2009 09:48 AM

NordicRage
can u send me the link for the flow diagram..i tried to go to the pervious page but it's not allowing me..

q

MrCIG 02-28-2009 08:40 AM

Plug the circulating pump and drill a 1/8" hole on the thermostat. works fine on mone for 2 years now.

Mark

offthefront 02-28-2009 09:07 AM


Originally Posted by MrCIG (Post 2810602)
Plug the circulating pump and drill a 1/8" hole on the thermostat. works fine on mone for 2 years now.

Mark

If you have the merc style Thermsotat housings where the water comes the the raw water pump to the Thermostat housing then out to the circ pump that should work ....not sure why you would even need the 1/8' hole ...m

jeffswav 02-28-2009 09:52 AM

I have the EMI crossover system with thermostat and bypass. I was told to drill the hole in the thermostat to relieve water pressure. Also supposed to decrease temp fluctuation. I drilled the hole and everything works perfect.

qaberdeen 03-01-2009 07:15 PM

thanks for all the input thus far..

Next question what would be a good option for an electric fuel pump min. 6 PSI's or would the stock one work just fine..
i was thinking of going with a Holley Blue pump

thanks

offthefront 03-01-2009 08:10 PM


Originally Posted by qaberdeen (Post 2811619)
thanks for all the input thus far..

Next question what would be a good option for an electric fuel pump min. 6 PSI's or would the stock one work just fine..
i was thinking of going with a Holley Blue pump

thanks

you cant run more 7-8 pounds on the carb ....your going to have to regulate it down if your running the stock MPI pump ..m


All times are GMT -5. The time now is 04:49 AM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.