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Old 16-11-2013, 05:32 PM   #1
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What Merc has WH22 carbs?

What engine is supposed to have WH22 carbs jetted with .074 on carbs 1,3,4,6 and .076 on carbs 2 and 5.

Thought I had a 150hp blackmax with an ancient midsection and a mariner gearbox lol its a real Quasimodo lol (that was because of the serial number on the transom bracket)

It was given to me as part payment (£100 worth) so cant complain.

After a quick Google search the Americans seem to think WH22 are larger and found on V225s and 2.4's. Does anyone have a book answer for WH22? my books cover 1992+ v6's 135, 150, 175, 200, 225.
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Old 16-11-2013, 07:01 PM   #2
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The old 2.4 225 had WH15's on them, or WH 20's on some.

What is your ser no, on top of the block on the frost plug.
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Old 16-11-2013, 07:06 PM   #3
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no serial numbers on the block
the one on the leg is a 45**** (**** = cant remember lol).
was the 2.4 any good?
I know they have chrome ports so porting and polishing is difficult.
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Old 17-11-2013, 12:04 AM   #4
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WALBRO WH 22 carb

Mercury outboard using WALBRO WH 22 are only V6 135/200hp range for the year 1990.
per the serial numbeer you give your engine sems to be in the 175hp range, anyway the jet size you gave doesn't match exactly, may be better to use a Wen to check the small engraved numbers on the jets, 175 for this year seems to use 0.74 & 0.78, or you say 0.74 & 0.76....
May be I'm wrong either.
2.4 liter use nikasil treatment on the cylinder liners.
I've a complete set of WH carbs for 2.4liters merc 200HP at home.
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Old 17-11-2013, 12:38 AM   #5
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No 2.4 in 1990 they had moved to 2.5 by then and 2.4's were chrome, didn't start nicasil until 2.5's came out! Although there's exceptions, I have a 2.4 F1 Bridgeport block stamped 1995 with nic cylinders and a big bearing crank! Weird one and a very strong motor!!
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Old 17-11-2013, 10:14 AM   #6
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Quote:
Originally Posted by Frenchbruno View Post
Mercury outboard using WALBRO WH 22 are only V6 135/200hp range for the year 1990.
per the serial numbeer you give your engine sems to be in the 175hp range, anyway the jet size you gave doesn't match exactly, may be better to use a Wen to check the small engraved numbers on the jets, 175 for this year seems to use 0.74 & 0.78, or you say 0.74 & 0.76....
May be I'm wrong either.
2.4 liter use nikasil treatment on the cylinder liners.
I've a complete set of WH carbs for 2.4liters merc 200HP at home.
All the books I have here state that 1990-1993 use WHM or WMV. The 175 with that jetting and year is a WHM 22 not a WH 22.

I'm thinking 2.4 200.
I think velocity stack and exhaust mod for noise and just live with 200hp until I can afford a better engine. Thanks guys for your help.
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Old 17-11-2013, 02:03 PM   #7
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Here the document to show they still manufacture 2.4 liter in 1990 year's.
And the other document to show the period they had the WH carbs on V6 merc for the 1990year.
I can scan you the 8 pages of WH WALBRO carb if you're really interested.
But Alan is right too, I've a 1989 200 using WH carb too !!! may be one of the first 1989 using this WH carb before the 1990 batch.
To be clear on the subject I'm not speaking on 2.4 bridgeport racing engine , but blackmax serie, which is is the Cream marine starting question.
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Old 17-11-2013, 03:06 PM   #8
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this should make things easier,

I cleaned all the crap off the block today and found an ebossed number which isn't a part number. being 7 figures im guessing the missing serial number.

6328802. serial number on powerhead.

also this engine has 7 petal reed valves.

kind regards.

Fench- my names Nick.
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Old 17-11-2013, 03:50 PM   #9
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7 petals reeds are only on 1991 V6 engine! your engine seems to built with many elementscoming from différents engines. Can you determine the bore and stroke of your engine, I guess it's not a 2.4, or you're using a 2.4 block from a pro max something like this.
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Old 17-11-2013, 05:24 PM   #10
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Quote:
Originally Posted by Frenchbruno View Post
7 petals reeds are only on 1991 V6 engine! your engine seems to built with many elementscoming from différents engines. Can you determine the bore and stroke of your engine, I guess it's not a 2.4, or you're using a 2.4 block from a pro max something like this.
Still speaking about black max engine, not racing one of the same period, of course.
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Old 17-11-2013, 05:56 PM   #11
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the power head looks untouched. I don't think its ever been split down.

the transom bracket has the separate trim/tilt unit that you mount in the boat.

the gear box is defo a EZ from merc v200, it was my spare for no fear.

Definite bits are serial number on block is 6328802, 7 pettle horizontal reeds, Wh22 with .074 +.076 jets, lightweight flywheel.

I thought promax was EFI
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Old 17-11-2013, 06:43 PM   #12
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It sounds like a 2.4 and with 7 petal reeds will be a 225hp and a great engine.

The 91 only 7 petal v6 that Bruno States was the first on the 2.5 carb motors (steel bores) and a rare engine as they went to 5 petal after 91 although the race 245hp and 260 hp were always 7 petal.
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Old 17-11-2013, 07:29 PM   #13
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It sounds like a 2.4 and with 7 petal reeds will be a 225hp and a great engine.

The 91 only 7 petal v6 that Bruno States was the first on the 2.5 carb motors (steel bores) and a rare engine as they went to 5 petal after 91 although the race 245hp and 260 hp were always 7 petal.
any of the above would be a nice suprize. I could only wish it was a 260hp lol, the steel bores would be nice so it could be ported and polished but being 260 out of a 2.5 I would imagine that's already done.

I think its defo a V225. even the separate pump and bracket design matches in the diagrams. the 7 petal reed valve setup same, all looks the same. no mention of wh22. mentions the ones hydro was going on about.

were the bracket below any good or should I maintain in the hunt for a 15" mid and cle box
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Old 17-11-2013, 08:35 PM   #14
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Your serial number 6328802 - V200 from 1983
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Old 17-11-2013, 08:50 PM   #15
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Your serial number 6328802 - V200 from 1983
is that a 2.0 or 2.4?
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Old 17-11-2013, 09:35 PM   #16
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For the serial number 6328802 it's a possibility, but these 2 serial numbers of engines doesn't use WH22 carbs!! per 2 parts finder I use...
Look like the carbs are not original one's.
And does the reeds are vertical or horizontal?
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Old 17-11-2013, 10:52 PM   #17
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Quote:
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For the serial number 6328802 it's a possibility, but these 2 serial numbers of engines doesn't use WH22 carbs!! per 2 parts finder I use...
Look like the carbs are not original one's.
And does the reeds are vertical or horizontal?
horizontal. see diagram below.

its a strange one but after it was suggested a 2.4 v225 I looked at my parts catalogue and all the parts are the same apart from the wh22 carbs, it says they should be wh5 or wh20 but the jetting is almost the same (.072).
I'm more convinced its a v225 than anything else. I just wish it had a definitive serial number on the leg and plug. but we have a 44***** number and a 63*****.
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Old 17-11-2013, 11:33 PM   #18
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My parts is coming back with a 4/4.5Hp for that ser no.

Easy to know if its a V225, it will have old style heads with blots on cylinders not out on the block, which changed in 1983 to new style. The V225 also had WH 15 or WH 20 wide bore carbs. I have 2 of these engines, one came on my 1981 hydrostream as original engine.

The old 225 wont have finger ports either.

Take a head off and post a pic.

Also, what boat is it on? On a Phantom 18, you could cut the exhaust chest slightly, bump compression, deck the front half and fit carbon reeds and have a pretty strong motor.
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Old 17-11-2013, 11:49 PM   #19
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Quote:
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My parts is coming back with a 4/4.5Hp for that ser no.

Also, what boat is it on? On a Phantom 18, you could cut the exhaust chest slightly, bump compression, deck the front half and fit carbon reeds and have a pretty strong motor.
that's what I had on serial number search on Brunswick.

may go on the phantom 18 or ring 20.

do you have a pic of a cut exhaust chest so I can see how much you take?
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Old 18-11-2013, 12:29 AM   #20
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I have but most of the ones I have are pretty heavily cut.I wouldnt go too far on a heavy boat, it kills low end so you would want to know which boat its going on. Very different weights on the phantom and ring.
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