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07-29-2022, 10:45 AM #16
Try your xr2 carbs on your 2.4
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07-29-2022, 12:20 PM #17Team Member
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Subscribed.
I hate tough mysteries when it comes to motors that I have myself, and am always hoping it gets fixed so I can learn from it.
-Peter"padded wonder"
__________
the wet:
Hydrostream Viper, 140 v4 crossflow, some Raker props
16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
17' boston whaler alert, 90 merc fourstroke
13' boston whaler, 40hp yamaha
the dry:
2003 bmw ///M5
1993 mustang/griggs racing road race car
and a handful of clunkers
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07-29-2022, 08:24 PM #18Screaming And Flying!
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i had a 88 xr2 i took in trade on a 200 efi for a guy who had way too much boat for a 150 it was a23 ft center consol from the coast they had wh40 on them i still have them thy had 80 mains in all of the carbs
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07-29-2022, 08:30 PM #19
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07-29-2022, 11:00 PM #20
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07-30-2022, 12:40 AM #21
Yes the carbs are the same. Your mains on your xr2 carbs are probably 64's if stockish. They will work on your 175 for a quick pull. Bottom to mid is what your looking to correct, you can add main jets sizes for the big end if these carbs correct your issues
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08-02-2022, 02:11 PM #225000 RPM
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08-03-2022, 06:07 AM #23Screaming And Flying!
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Yellow Melllow....... Goood to see ya still ckin' around here....rcKid
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01-23-2023, 09:49 PM #24
UPDATE: I know this is an old thread but I thought I'd let you know what was found. It looks like the starboard side head up by #1 is warped enough to let exhaust leak into the water jacket. Would this cause it to run like described above? Now I'm looking for someone to machine the mating surface flat or find good used UNWARPED heads. Thanks for posting any further thoughts on this. Peace.
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01-24-2023, 01:31 AM #25
Bunches of folks can cut your heads. JSRE Jay Smith Racing does a lot down here in TX
1990 Shadow bass boat w/ 2.4 200 Merc. Totally resto'd boat and love it!
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OnPad liked this post
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01-24-2023, 02:33 AM #26
I doubt it would cause the rattle, unless it was sucking water, and killing the spark. Or had done some damage to rings, rods, or bearings?
It usually takes alot of heat to warp a head.
Possibly enough to melt glue or demagnatize flywheel magnets, or make cylinders out of round?
I would still recommend running a timing light on all cylinders. Make marks on flywheel with white paint and label 2-6.
Compression test isn't going to tell you if you have a broken reed, unless it did damage.
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01-25-2023, 02:16 AM #27
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01-25-2023, 02:58 AM #28Screaming And Flying!
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Make sure ya not using 2.0 head gaskets on a 2.4..........Also on early 2.0/// or any merc.... make sure the choke enricher bolt is not tooo long.... will give a vacume leek........
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rgsauger liked this post
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01-25-2023, 10:30 PM #29
Some clarification: The warpage had to have been caused before I got the motor. My engine builder did not notice any warpage, but... He said there was no indication of water intrusion into the comb chamber, BUT some of the plugs when I pulled them looked really clean. If any amount of water was getting into a comb chamber it would clean the plug, and make it run like s--- at low rpm, and even make it die at idle. If the leak were not really bad it would still run at high throttle positions. Me just speculating...
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01-26-2023, 10:06 AM #30
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