Hawk Talk

[pete]

Originally Posted by Ariel Red Hunter

Oh? Maybe they up-graded to aluminum. The earlier ones had a plastic (phenolic?) spacer, from what I've seen on various youtube videos.

I think you are talking about the heat riser.... nylon block to help stop the heat from
the head migrating in to the carb body...
rubber intake boots , manifolds don't need them as the rubber works as a barrier...



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[Ariel Red Hunter]

Originally Posted by pete

I think you are talking about the heat riser.... nylon block to help stop the heat from
the head migrating in to the carb body...
rubber intake boots , manifolds don't need them as the rubber works as a barrier...



...

Yes, that's what I think as well. And you put it very well. A side benefit is that it makes the intake tract longer. I think some engines needed rubber intake boots in order to reduce or stop fuel frothing in the float bowl from engine vibration. Or so we were told.

[Weldangrind]

Originally Posted by Jmcgee

Tinkering, I found a massive restriction in the little "carb to head" intake runner, felt like 3/16 at the top that port match would open up for more flow.

Please show us.

[Jmcgee]

Yep aluminum

[pete]

scribe a line around it remove the manifold... use a dremal or die grinder...
put a rag down the head & have a vacume cleaner sucking as you
grind it off..

Or if theres a lip on the other side in the other direction..
I may be possable the slot the mounting holes to centre the manifold
on the head....



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[Jmcgee]

Originally Posted by pete

scribe a line around it remove the manifold... use a dremal or die grinder...
put a rag down the head & have a vacume cleaner sucking as you
grind it off..

Or if theres a lip on the other side in the other direction..
I may be possable the slot the mounting holes to centre the manifold
on the head....



...

The intake tube is what has the issue, I am going to pull it off and put Dykem on it, re install and use a hooked scriber to scribe it. then pull it off and grind it to the line.

[Ariel Red Hunter]

Originally Posted by Jmcgee

The intake tube is what has the issue, I am going to pull it off and put Dykem on it, re install and use a hooked scriber to scribe it. then pull it off and grind it to the line.

Looking at your picture, is that a casting flaw in there, or just a stain of some kind in the intake tube.

[Jmcgee]

Not sure yet, didn't feel it and the camera works better than my eyes at that angle. I'm going to pull it off later tonight and get some more pics of it and the work as I do it.

[Jmcgee]

Two aluminum parts are fused together with a rubber isolator between them. the flaw that's in the pic was in the rubber.

[Ariel Red Hunter]

Originally Posted by Jmcgee

Two aluminum parts are fused together with a rubber isolator between them. the flaw that's in the pic was in the rubber.

Well, I'd buy a new inlet tube, myself. Or make a new one. Unless you can find a substance to fix it with that absolutely won't come loose.

[Jmcgee]

https://www.amazon.com/GOOFIT-Perfor...&keywords=42mm

thinking about this filter, the cover will protect it from the elements while increasing airflow.

[pete]

looks very restrictive



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[hertz9753]

It looks like a double bagger and it wouldn't work for the intended purpose.

All kidding aside, You really should put the air filter in a box or have something to restrict the hot air coming from the engine and exhaust...

[Jmcgee]

Originally Posted by pete

looks very restrictive



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Even if it as restrictive as the original airbox. at least I can access it... that is my major issue, why they made it like that did stumps me
These last couple of post should have been posted in the magician issues, not hawk talk. sorry guys my bad.

[Ariel Red Hunter]

Originally Posted by Jmcgee

Even if it as restrictive as the original airbox. at least I can access it... that is my major issue, why they made it like that did stumps me
These last couple of post should have been posted in the magician issues, not hawk talk. sorry guys my bad.

No, I think that issues with the engine, gearing and intake-exhaust systems should be here because these issues go across all C/B's using this engine. So, you aren't bad!