Master Hack
Well-known member
The date on that fixit thread is Nov '25. It has worked flawlessly since. Don't be sceered weld it.
Anyone have a genuine Comet 40 series driver they want to sell?
- Thread starter Edwin Spangler
- Start date
Whitetrashrocker
Inmate #952016
The twisting theory makes sense.
Master Hack
Well-known member
I tried to figger a way to make it less perminent. Maybe pin it, key it, lock tite, anything.
in the end there was only one way. lt was junk anyway, nothing to lose. I'm curious to see just how long it lasts.
I thought about making a double D washer and welding it to the bell. Essentually doubling the thrust surface area. (Thicker) But that cuts the threads by that amount.
in the end there was only one way. lt was junk anyway, nothing to lose. I'm curious to see just how long it lasts.
I thought about making a double D washer and welding it to the bell. Essentually doubling the thrust surface area. (Thicker) But that cuts the threads by that amount.
panchothedog
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I think you nailed it on the used speed equipment ( hop up parts ). I have built 10 or 11 of these things ( lost count ) over the last 6 years. 196's, 212's 224's a 301, and a 420.
All of them full of speed parts. Rods, cams, fly wheels, flat top pistons, SS valves, springs ect. I have boxes of stock parts that came out of the engines ( that I will probably just throw away some day ) but practically nothing of good stuff left over.
It's all in the engines. Also, don't think I have ever seen any good stuff for sale used.
Not at all like building a popular V-8, where you could build an entire engine from used goodies. Different market for sure.
Edwin Spangler
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So Ive come to the conclusion that a billet flywheel just isnt happening right now. Just too damn expensive. Maybe I could justify the cost if I could retain my charging system but Im not finding one of those. Anyone know of something I dont?
So the next best solution I came up with is getting a genuine gx390 flywheel, the older style, and keep the "blast sheild" that I made in place. Im comfortable with that. No danger to the kids, just the engine. Whatever, maybe itll blow up and I can put something crazy in there. Im learning a little bit about these Polaris engines... Hmm.
Anyway, you know how much a new, genuine 390 flywheel is? More than an ARC flywheel. Lol
I guess the goal now is lots more power and taller gearing to keep the engine speed down.
A word of caution, because I never thought of this until AI learned me yesterday... You CANNOT remove the GOV/increase power and add RPM to a 420 just willy-nilly like you can with a small block. LOTS more mass and LOTS more kinetic energy so LOTS more chance for their 'less than optimum' quality control to become apparent in the form of an exploded flywheel.
I was under the assumption that, the 212 Ghost spins a stock flywheel at 5k, why not the 420? Turns out that even the Ghost engine has an upgraded flywheel. Its not billet but its designed to spin faster than a stock 212 flywheel.
Who knew such a hassle could be so much fun!
So the next best solution I came up with is getting a genuine gx390 flywheel, the older style, and keep the "blast sheild" that I made in place. Im comfortable with that. No danger to the kids, just the engine. Whatever, maybe itll blow up and I can put something crazy in there. Im learning a little bit about these Polaris engines... Hmm.
Anyway, you know how much a new, genuine 390 flywheel is? More than an ARC flywheel. Lol
I guess the goal now is lots more power and taller gearing to keep the engine speed down.
A word of caution, because I never thought of this until AI learned me yesterday... You CANNOT remove the GOV/increase power and add RPM to a 420 just willy-nilly like you can with a small block. LOTS more mass and LOTS more kinetic energy so LOTS more chance for their 'less than optimum' quality control to become apparent in the form of an exploded flywheel.
I was under the assumption that, the 212 Ghost spins a stock flywheel at 5k, why not the 420? Turns out that even the Ghost engine has an upgraded flywheel. Its not billet but its designed to spin faster than a stock 212 flywheel.
Who knew such a hassle could be so much fun!
Master Hack
Well-known member
No, but lemme see if I can find the one I took off. How 'bout a used one?