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Thanks for the compliments. Unfortunately I’ve sold that boat as of last year. You should be able to look up a belt routing for the 5.7 Mercruiser. Try iBoats.com and the forums there.

Was that a quicksilver kit? Mine came with all kinds of extra stuff. Picked it up from my local marina maintenance shop.

chris ciraldo I did have gaskets left over. Only gasket I used was the one with the small brass contacts in it plus the o-ring and the plastic sleeve.

Doesn't a gasket go on top also for the cap?

chris ciraldo Not sure what “cap” you’re talking about. I only had to use the o-ring and plastic sleeve inside the housing and one gasket where the thermostat housing bolts to the engine.

You are missing the block off gasket for the top plate that comes off

chris ciraldo Hmmmm... Not sure ours are exactly the same then. Been running mine this way for 3 years, no issues, no leaks.

It only did that on the initial thermostat openings. Boat has run perfectly for three years since this video and I’ve never seen it above 180°. We use it about three times a month from May to October in Georgia.

Justin Sullivan You’re welcome, glad it was useful...

MaxSpeed Track Days Garage quick question though, my buzzer (alarm)is going off what would be the cause of that? Do you know? I see my thermometer is not getting the right reading since I put a thermostat in..

Justin Sullivan I’d check that the washer with the copper grommets in it is good. Make sure you’re getting good conductivity through there so the temp sensor can give you an accurate reading. If the temp sensor is bad, change that and see if you continue to get the alarm...

MaxSpeed Track Days Garage thanks! Update the alarm was another issue but it went away but now the temp gauge is not reading right. It’s reading 190-200 degrees as soon as you start it up. After checking with a IR thermometer the temp at the sensor gets bout 155ish when at its hottest. Then the gauge will read closer to 240. May be a issue with the sender. Thanks for the help!

Justin Sullivan could be that your gauge is bad as well. There’s a way to check that by grounding the temp sensor wire... I can’t remember the correct procedure off the top of my head, but I found it originally on the iBoats forums. Hope you get it figured out...

You are exactly right. Mine does too. I would be interested to see if it does the same off the hose?

so my 5.7 mercruiser goes up to like 180 i was dondering if that is too hot. book says 160 and i belive i installed a 160 tstat

It’s been working perfectly since I installed it. Keep in mind I have the thermostat housing upside down on the video. Thanks for the input...

@@_FlyingScotsman_ That may very well be the case; however, anyone else who wants to follow this video, should know that the proper way to install a MerCruiser thermostat is opposite to the way that you show in the video.

@@Jazzy4now Sorry Jazzy but you are wrong. The spring portion of the stat is the bottom, the short part that comes to a point is the top. Max is working with the housing upside down so the point would go in first. When turned right side up and installed point will be on top, spring on the bottom just as it should be.

andrew andreou - The thermostat is installed properly and the boat has been running great for two years!

@@_FlyingScotsman_ No according to this manual it li the right way. www.mercruisermotor.com/files/5_7LEFI_01_B.pdf Page 28 #5

This is 100% correct. Gaskets installed improperly

Mike Dodd Cool, I guess that’s why they provide multiple options inside the kit. Nice to not have to make multiple trips to the parts guy. 👍🏻

nelaco1 Thanks for the compliments! Yes, boat is running great, temp stays rock solid at 180 degrees when running at 30-35 mph (gps) If your thermostat is 9 years old I definitely recommend replacing it. Along with the impeller and such.

@@_FlyingScotsman_ , great to hear. Yes, I've replaced all the hoses, raw water pump, and impeller. Today I'll replace the thermostat. The temp fluctuation has me a little worried so I am hoping a new thermostat will take care of it. I don't know yet how she is doing on plane since I haven't launched for the new season yet. Take care.

Mel Robinson Thanks for the compliment and I hope the video helps you out...

Foulmouthflicks - I just hooked up to the flush and tested that the thermostat was operating properly... No bleeding involved...

Lake Ontario Boater - I had read a lot and spoken to guys on my Chaparral Forum, so I expected the sleeve/spacer to be stuck or that I would have to break it to get it out. They’re cheap, so I had one on stand by. I didn’t expect mine to be missing which explained the erratic temp readings when I first put the boat on the water. Happy to report that a year into ownership she’s doing great and we’ve enjoyed a lot of use out of her!

Jerrit Tyler - Thanks! I don’t know who Danny McBride is but I’ll look him up! Glad I could be of some help for you...

LOL... I hear that a lot!

Glad I could be of some help Steve!

Mike Haley - I did not use any sealant. Your design may be slightly different, but in mine sealant is not recommended due to the brass rivets in the gasket that aid in electrical conductivity for the temp sender and the alarm temp sensor.

Use a film of grease on each side of the gasket

Marty - Sure! You can Facebook message me if you want. I actually don't have this bike any longer, but it was awesome and I loved building and riding it!

Fix it with Phil Hey Phil what's up buddy. I messaged you a while back about your bike and you told me to Facebook you but I don't really do the Facebook thing but I will try, so what name will I find you under? I kinda really need to talk to you because I have to do that same setup on my Fatboy so I really need to know what parts you used as far as the mounting studs on the fender rails that hold the saddlebags and the trunk mount and also how you mounted the trunk to the luggage rack. I'm sure I can figure it all out but it would be so much easier if I could pick your brain a little bit. I would more than appreciate it!!! Thanks again bro 👍 Btw, did you ever get another bike after you got rid of this one? I don't know if you are aware of this but we are attempting the Guinness book of world record for the longest Harley-Davidson only parade. Right now Greece holds the record, wtf, Greece??? Lol Thought you might want to join in if you have the time. (and a bike) lol