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Thread: Yamaha 2.6L Frankenstein build
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06-06-2014, 09:25 AM #16
Sounds like you are fighting with the mid to engine bolts. I have yet to have problems there, I have heard if they loosen some then getting in with a saw and cutting the base of the threads.
Issue with the corrosion along the shaft is a mechanical grip so the penetrante may not work.
I live up in a fresh water region so I have not learned all the nasty tricks.
With head bolts if things go well the threads can be saved. Otherwise a helicoil is needed. I just did 4 holes on my Excel and one wandered so it got an insert.Regards,
Charlie North
If it ain't broke, modify it.
80 21' Superboat with Yamaha 225 Excel power
76 Glastron to be powered by a 6.2 L92 with surface drive
87 Glastron CVX20 Hull
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06-06-2014, 09:43 AM #17
I could afford to damage the mid section that came with the excel powerhead so I ran a drill through it and the bolt and it eventually broke free. I cannot do that with the remaining mid sections so will need to be very delicate, something I am not good at .
I will use my rattle gun at medium strength and see if I can shake them out .Last edited by 225XCL; 06-06-2014 at 10:06 AM.
Sold the old Formula 233.
Now have a 22ft Whittley Sea Legend powered by 225 Excel with Pro-V 200 covers.
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07-11-2014, 08:39 AM #18
Update on rebuild for those that may be interested.
First engine has had the 3 head bolts drilled out and helicoiled.
Engine has been reassembled and is ready to be put on the boat.
All standard components apart from Chris Carson reeds and the heads surface ground (small shave).
Carbs rebuild.
Just have to get the old power head off, that will be fun.
Second motor, block has had the exhaust ports ground out to match the 225 block, cleaned, prepped and ready for rebuild.
Small issue with the piston rings that came in the kit, they are ,25 over while the pistons are standard. Replacement parts on their way.
I need a number of parts of the 1 of the 150's to finish this one, starter motor, fly wheel, ignition and so on.
Sold the old Formula 233.
Now have a 22ft Whittley Sea Legend powered by 225 Excel with Pro-V 200 covers.
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07-11-2014, 11:01 AM #19
You can use your original starter, just the top mount of the starter needs to be swapped for the proper one from a horizontal intake.
Similar on the ignition, you can run the original from the 150, just need to make a few little changes on the throttle control arm to suit the new intake.Regards,
Charlie North
If it ain't broke, modify it.
80 21' Superboat with Yamaha 225 Excel power
76 Glastron to be powered by a 6.2 L92 with surface drive
87 Glastron CVX20 Hull
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07-12-2014, 02:27 AM #20
Thanks Charlie for the tips.
Cheers
Sold the old Formula 233.
Now have a 22ft Whittley Sea Legend powered by 225 Excel with Pro-V 200 covers.
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07-27-2014, 02:24 AM #21
Holly Sh1t, what a pain in the a$$ getting the Powerhead off form the midsection but finally its off and with out breaking anything.
Sold the old Formula 233.
Now have a 22ft Whittley Sea Legend powered by 225 Excel with Pro-V 200 covers.
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07-27-2014, 09:39 AM #22
Heat heat and more heat. I only had access to map gas but it worked. Heat it until it cant get any hotter then use a blunt point in a small air chisel to vibrate the bolt.
WHen you put it back together, coat the bolts with grease with a little dab if silicone under the bolt head.13' Biel tunnel AKA "Flight Risk"
13" Modified Yamaha V4 - 101 mph
21' Paramount
Mercury 300 Promax
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07-27-2014, 10:20 AM #23
Chris,
You prefer grease rather than antiseize compound?
Your salt is different than what I deal with is why I ask.Regards,
Charlie North
If it ain't broke, modify it.
80 21' Superboat with Yamaha 225 Excel power
76 Glastron to be powered by a 6.2 L92 with surface drive
87 Glastron CVX20 Hull
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07-28-2014, 04:14 AM #24
I had considered putting in grease nipples on each one. But have decided that I will crack them every year and clean then up and re-grease as part of my annual maintenance.
Timing couldn't have been better, the gear box shift rod is almost rusted out so they will be replaced. Would have annoyed me if I had to do this juts to replace those.Last edited by 225XCL; 07-28-2014 at 04:47 AM.
Sold the old Formula 233.
Now have a 22ft Whittley Sea Legend powered by 225 Excel with Pro-V 200 covers.
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07-28-2014, 05:41 AM #25
How are the tiller arms, any rust on them? Or are you lucky and have the stainless ones?
Regards,
Charlie North
If it ain't broke, modify it.
80 21' Superboat with Yamaha 225 Excel power
76 Glastron to be powered by a 6.2 L92 with surface drive
87 Glastron CVX20 Hull
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07-28-2014, 06:10 PM #26
Sold the old Formula 233.
Now have a 22ft Whittley Sea Legend powered by 225 Excel with Pro-V 200 covers.
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07-28-2014, 06:23 PM #27
If only we could figure out some reasonable shipping (that's not on an actual ship!!) because I have a few really clean freshwater 25" mids and swivels. Saltwater is not kind to these motors..i feel for ya!
'08 SRV
Yamaha 3.1 Phase III
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07-28-2014, 08:13 PM #28
I will keep that in mind.
I have a box waiting to be picked up at the Post office, hopefully its the parts you sent.
I think the current tillers will cleanup OK. BTW is there a tick to getting these off, none of my sockets have a thin enough wall to slide in and over the nut.
Sold the old Formula 233.
Now have a 22ft Whittley Sea Legend powered by 225 Excel with Pro-V 200 covers.
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07-28-2014, 08:14 PM #29
Use a wrench..
'08 SRV
Yamaha 3.1 Phase III
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07-28-2014, 10:02 PM #30
I thought about that but don't like my chances with a spanner/wrench. Can only use an open end and I think the nuts will round before they move.
I will give it a try on the spare I have first.
Sold the old Formula 233.
Now have a 22ft Whittley Sea Legend powered by 225 Excel with Pro-V 200 covers.