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Thread: 1985 mod vp or not
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08-05-2019, 06:52 PM #16
after you posted another pic on your other post don't believe that to be a cle?.. looks ta be early factory.. does it have for better words, a "trough" on both sides that look like it will better water direction to tha little inlets?.... if so it probably came on tha original motor/clamp/down housing.
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08-05-2019, 07:16 PM #17The Historic Photo Master
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stock modvp's were carb motors.
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08-05-2019, 07:35 PM #18
that serial number doesn't come up as mod-vp.. doesn't even come up as hi perf.. jus 2.4 (merc. site).. but its definitely early hi perf efi..
mod-vp... efi.. they did in tha '87 horn motor.. don't know 'bout tha earlier up-draft?
https://www.mercruiserparts.com/merc-mod-vp-efi
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08-05-2019, 08:13 PM #19
I'll be the first to admit I don't know everything. I'm usually not surprised by Mercury V6 outboard stuff but there's not any hi-po stuff around here. Somebody school me on the "updraft" front...
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08-05-2019, 08:25 PM #20
look at tha pics of his motor.. pre horn tha front plenum has a big hole and throttle plate on tha bottom for air intake... sucks air "up" thus tha "up draft".. its sometimes mistakenly called a down draft..
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08-05-2019, 10:28 PM #21
tlwjkw, I've been a member here for 7 years + and lurked for several years before that. never seen or heard of this before and I know how ti search...
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08-06-2019, 07:25 AM #22
picture of tha thing with original ecu… some of us here are gettin' "really old"..
Last edited by tlwjkw; 08-06-2019 at 07:28 AM.
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nitro_rat thanked for this post
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08-06-2019, 07:41 AM #23
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08-06-2019, 08:12 AM #24
I don't remember any efi's back then (pre horn) being tha oval port?.. later, anything with tha bleed stuff could have been either and no way ta tell from outside appearance that I recall.. don't remember much about tha "hot rod" oval port (efi and carb) till around '87 up...
if they didn't have bleed nipples at cyl's 99.9% chance of it bein' a BP as tha oval port is really justa naked production block..they also built a "formula" motor that was seven petal carb BP that gets mistaken for a mod-vp... its not a well known motor...
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08-07-2019, 06:49 PM #25The Historic Photo Master
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08-07-2019, 07:11 PM #26
think that one will be either tha efi or tha 5 petal carb motor maybe?.. tha seven petal carb came straight off tha "TRUCK" (like tha laser injected BP).. was originally a lefty, powerhead only... been a very long time ago...….
Last edited by tlwjkw; 08-08-2019 at 04:50 AM.
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08-07-2019, 08:22 PM #275000 RPM
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Well Let,s start with lower Yes 2 eye lits above center of c/l center line , mid single ram w j1171 pump, have not check other marking
but will , no pulse lines on block, aluminum old school flywheel , has hour clock reading 136 but i have 2 hours on it.
That i know, your guess, heads 1 pc ??
Thanks A bad ass sounding engine, need to get on a lite boat.
Need compression numbers, see what we have Thanks again O yes told this engine is from Tennessee and S&F
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08-07-2019, 11:33 PM #28
My 85 Mod VP doesn't have bosses on the top cylinder and its "naked"
If I don't ask any questions, I'll never learn anything.
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08-08-2019, 09:37 AM #29Member
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08-08-2019, 10:27 AM #305000 RPM
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Thanks xp300 great pic,s
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