Coolant flush

For those not wanting to read my ramblings; blue or green for a 97 750?

Hey all, I’m back once again. Been working on my grandfather’s r36 again. After tracking down a fuel leak when the bike starts, I’d gone through rebuilding the carbs which led to the culprit being the prongs in the fuel cross over tubes. She runs now with 0 leaks. First time in something like 8 years. Not bad for my first time ever working on carbs. (Gotta brag, 24 year old working on “ancient” tech. No big deal to you more experienced folks, right?)
So she sounds like she’s running fine and dandy, but picked up some balancing gauges to double check. However, before I even let the bike run long enough to get to operating temperature and blah blah blah-
I’m wanting to do a coolant and oil change.
I’ve seen guys on here argue over OEM, Engine I’ve, this that and the next… I personally have settled on trying out Engine Ice. The one thing no one mentioned that I saw, was what color coolant? I figure it’s either blue or green, definitely not orange.


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I'm old school and stay green. Just make sure it is a non-silicate formula, which most are. I think Honda Coolant at the car dealerships switched to blue color at some point. Not sure if it still is.

Oh, good job on the bike!!

 

I wasn’t aware of the color change. From my understanding the main difference between the colors is the chemical composition and how it’d react with the material the engine block is made of. Am I mistaken? Can blue and green be interchanged?
My confusion comes from seeing in forums it’s blue, yet the owner manual calls for green. Wanting to cover my bases rather than risk ruining this heirloom.


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The bike came with green. Pretty sure Honda Coolant is now blue. Everything I've read is that they are compatible and can be mixed. I buy high quality green coolant at the Auto Parts store.

 

Gotcha. Thanks a ton Captain.


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it's kinda awkward getting to them, but there are two drain bolts [ten mm] on the engine just behind the front header pipes that need to be removed for a really thorough coolant flush.

 

Now that sir, sounds just like how my dad and grandfather would’ve said it.
It’s cool if it’s old school.
Why else would we all be keeping these bikes on the road?
Well…except for growing old. Getting old sucks. I’m 24 and my back is killing me. Please tell me it gets better guys…
Guys?
x,D
In all seriousness, thanks for the reply. It’s a silly question but better to ask than to assume.


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My dad says,

"The Red Zone in life is hard."

But to your point, I think it does get better. There are pluses and minuses to getting older, but wisdom and lessons learned go a long way. And being in a better place financially doesn't hurt either.

Happy Friday.

 

Oh, and "ancient" tech...

Fuck off.

;-)

 

x,D hey, I have to live with the fact that 05 kids are 18 now. Already heard a couple kids asking what a cassette tape is and even dvds… Yeesh. I grew up in a house that still had 8tracks, laser discs, the film reel projectors and so on.
Over all, without the folks like you guys on these forums, us younger guys and even future generations wouldn’t have the info we need to do these sorts of things. In all seriousness, we couldn’t do it without you.


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I had two friends that I met a about a year ago thru this forum over a few months ago for a "Carb School". Splitting, completely disassembling, replacing all o-rings, re-assembling and bench synching. It took HOURS going thru each step and explaining little tricks and why you do certain things. They said it was invaluable, and you just don't get the chance to learn shit like that. I kinda hit me and made me feel really good.

 

No fooling. Dying relics will be forgotten and neglected if we don’t learn from one another. Hell, I figured out how to split and clean the carbs on my own just by taking pictures and reverse engineering. The one thing I couldn’t figure out was how to remove the needle from the diaphragm to replace those tiny orings. Then one of the jets required a specially tool to access its oring.. at least I think that’s what it was based off the diagram I was looking at. My generation and even the newer ones take it for granted what wisdom the folks before us hold. Who knows, if there’s ever a wwiii and we go back to carbs, how will we know how to work on them on our own? Even then, learning how mechanical AF ratios work helps to understand the concept of what’s happening with electrical AF. It can help to diagnose in modern cars a lien or rich mixture as an example. My uncle says “we stand on the shoulders of giants.” We innovate off our ancestors. Each generation works to better the next, so on and so fourth. It’s a never ending cycle. We have it so bad now? How was it for you guys, your your grandparents? How will it be for our grandkids? It’s relative, sure, but it’s an indisputable fact that we work with and off of eachother through out the years. It’s how we learn, it’s how we evolve. One of the many problems I have with society these days is that we don’t have each others backs and our communication and social interaction is all based on publicity and self gain. Damn social media. This is getting off topic, but it’s people like you that give me hope and shows that not everyone out there is a mindless sheep following the heard.


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This is super confusing. What o-rings in the diaphragm? And are you talking about the pilot screws with the "D" shaped head?

And FUCK FB.

 

And get off my lawn!! It's my Frisbee now!!

 

Yes sir, that’s the one.
And yea, fair. Screw all social medias really..they’ve got their goods and their “oh god burn it all to hell”. But mostly the last one


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It is best to get that screw out so you can blow that circuit clear, but it sounds like you are ok.

I think somebody said they took a 22 shell and smashed a flat side on it. When I went thru the carbs on the ST1100 I spent the dough on the Honda Special Tool with the bendy shaft so I could adjust after the carbs are installed. On my 95 VFR, I used an adapter out my 90 degree screwdriver synch tool kit.

 

A 22 shell huh? If that’s not the most jankiest redneck way of doing it, I dunno what is. Lmfao if it works, it works. Love that, but don’t really have a 22just laying around. I’ll likely have to splurge for the proper tools at some point. Mainly want to get the bike running and ensure there’s no major problems. I’m already anticipating taking the carbs apart again at some point since I’m wanting to get an ultrasonic bath to make sure I’m able to properly clean them out.


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You don't need an ultrasonic to do that. But it's a nice tool to have. If you are starting, idling, and pulling thru the rev range, you're just fine.