Changing Intake ports to a D shape for better flow.

The more I look at that gap, the less I like it. the cam shoulder is resting against the inner race. The housings press against the outer race. When you tighten those housings down, your going to introduce some serious side loading on the bearings.

Did you mean my photo or that from your post? My photos are not with correct gaps. I take it only for demonstration...
 
The problem I see sprungle is that it's an unknown variable. The gasket might or might not squish enough to side load the bearings. You're in uncharted territory. It might be OK, but might isn't really good enough when the consequences could be drastically shortened bearing life if the bearings are side loaded.
At least that's the way I see it.
 
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Did you mean my photo or that from your post? My photos are not with correct gaps. I take it only for demonstration...
No, just the idea of a gap there is unsettling to me.
 
Hm, how I said, I'm not an expert in any means:whistle: Do need this bearings side load or did it damage it? I see your point of tighten as much so the gasket areas squeeze the gasket real hard:heart: This shiti bearing/gasket area thing on this head drives me crazyo_O
 
I have an idea for a "relatively" easy fix that will guarantee no side loading. You said there's a .03mm gap at each housing. Just remove .03mm from the inner flange on each housing. That would guarantee that with a gasket, there would be no side loading. Got access to a lathe or mill?
 
I have an idea for a "relatively" easy fix that will guarantee no side loading. You said there's a .03mm gap at each housing. Just remove .03mm from the inner flange on each housing. That would guarantee that with a gasket, there would be no side loading. Got access to a lathe or mill?

That's sounds like to easy. Is there a reason it's not a common mod? Many driver have leaks on points /advance... The how to's of bearing / camshaft assembly remind me sometimes of brutal dental operations, only to be sure it seals right. If the mill do the trick it would be very pleasend...
 
If the mill do the trick it would be very pleasend...
Milling the flanges will fix the worry about side loading, but it won't address the chronic problem of leaking at the seals these engines have. All that's going to do is pull the housings in where they should be in the first place.
I've noticed that the engine I built last year has taken to weeping at those seals... my SG. I have an idea for a permanent fix for that. If it works, I'll put a thread up detailing it. Here's a hint... :rolleyes: ;)

24x40x7mm seals.jpg
 
Dang Chris, you didn't waste any time did you:bike:. Just give that head a few cold and hot cycles to acclimate the epoxy to the aluminum.
Engine combination sounds real good, smooth and throaty, hopefully the jetting will be close enough allowing you to break the engine in.
Again Thanks for allowing me to port you a one off experimental head. Happy riding my friend and be safe out there.
 
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Thanks:)
Today I'm doing the Alto mod on my clutch...
That's a wise upgrade. Just a tip for ya, with your long motor combination you're gonna need bigger and longer air filters for increased air volume
because when you combine the pull of the long rods on the ports at mid stroke, BDC and D port flow capacity, there might be an issue starving the engine of air in the upper RPMs and we both know the temptations will be hard to resist with that engine package:rolleyes: Long rod 533 motors pull much harder up top, so be prepared for huge head rush:thumbsup:
 
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