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Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

right, and that is what i was looking for....a bit rich on the truck. just plugged everything back in the boat. verified timing marks...

Aug 9, 2025
Zyen reacted to jimmbo's post in the thread Engine, Carb or Prop? need suggestions or ideas please. with Like.

Marine Carbs are generally Calibrated richer than a Street Legal Carb, as the Engines they are on, run under a completely different...

Aug 9, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

i was wrong about the secondary rods i had installed. they were DR, not DP. since i was getting pig rich at wot on secondarys, i...

Aug 8, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

next update. im sure i'll get some bs for this, but here goes anyway. i wanted a good way to check the carb and be able to verify it...

Aug 8, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

yeah, it does sound like a limiter, compared to yours. however, there is nothing like that on this mill. the rpm drop was me cutting...

Aug 3, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

UPDATE: took the boat out today to test. got a 4 blade 17p stainless (renegade 176575) in yesterday, so installed it to try first. temp...

Aug 3, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

yeah, internals should be quite similar for the 090m block. i've looked at a lot of boats in this size/weight range with the 4.3l. it...

Jul 29, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

Scott, yes, the coupler is for a pre-1986 stringer drive. the couplers changed in 1986.

Jul 28, 2025
Zyen reacted to jimmbo's post in the thread Engine, Carb or Prop? need suggestions or ideas please. with Like.

Okay I was curious, cause Time and Time Again, I have come across those who drop Auto-Truck Engines into a Boat, and the Performance is...

Jul 28, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

marine shortblock from a marine engine builder in Florida. everything i put in is marine rated. (edit: except for the sla battery for...

Jul 28, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

i researched the sh!t outta the coupling when i got the new shortblock. it required the staggered-bolt starter, which requires the 14"...
Jul 28, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

hey kenny. the base timing of 6° is for 93 octane and 1° for 87. im running 87 non-ethanol (it's cheap and close). pressure is ~7# at...

Jul 28, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

hey scott. i hoped you'd see this. :) the boat originally came with a mercruiser 470 and 23p prop. that was gone long before i got it...

Jul 28, 2025
Zyen replied to the thread Engine, Carb or Prop? need suggestions or ideas please..

i had thought that too, but everything i've read (on forums with well-respected experts) say that the 4.3 is already on the edge of...

Jul 28, 2025
Zyen posted the thread Engine, Carb or Prop? need suggestions or ideas please. in OMC I/O & Inboard Engines & Outdrives.

hello fellow iBoaters. this is long post, as i want to convey as much info as possible on problems, what i've tried, and specifics on...

Jul 28, 2025

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