Running hot with yics box removed

[garyS-NJ]

I didn't notice it exactly when I removed my yics box (yes I plugged the ports and it does generally run well).. But my '84 venture runs a little hot. 2 up on a very hot day in traffic it was very hot, near the hot line but still regular riding it runs between midway and the high temp warning mark. When I removed my yics, I also pulled this square thing (see pic) which I believe helps the fan pull air through the radiator. Without the yics box, I don't see how to easily reinstall the square thing. Thoughts?? Oh and I haven't checked exhaust ports to see if its running hotter than expected on one or more ports (will check but figured I would get some thoughts here asap) and my carbs and airbox are stock with mixture screws set 2 & 1/8 turns out.. Note that I did cut off the muffler tips and punch holes In the muffler (see pic). With the exhaust mod I did not rejet because I thought the intake would govern how it breathes.. However, with the exhaust mod, I got a noticeable muffler pop (sounds like unburnt fuel being ignighted in the collector) at idle and at low engine load cruising between 1500 and 2200 rpm. This appears to be a rich condition in the idle/intermediate circuit which I guess might be leaned out with the mixture screws or a main jet needle shim but one would think that with the exhaust flowing more air, if anything it would be running more lean. Its not popping out the carbs and I don't think leaking air but will check that too) http://uploads.tapatalk-cdn.com/20161030/8656c72cffa654db30502445d97d24ee.jpghttp://uploads.tapatalk-cdn.com/20161030/eb481ef1fd1996878c6d09ae03a44fea.jpg

 

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[bongobobny]

Yes, that heat shield will help direct airflow through the radiator from what I remember,as well as keeping water out of the spark plug area from the front tire. One known fact is that on the MK1, the temp gauge normally reads high. Also, if your carbs are not sync'ed it will run hotter...

[garyS-NJ]

Thanks! So I should zip tie it in or fabricate a shroud?? I would think many members are removing the yics and doing something for a shroud.

 

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[luvmy40]

That shroud went right back in on my gen one after pulling the YICS box. Is there something missing on yours? It doesn't bolt in, just kind of rests in place with the rubber sides.

[bongobobny]

Yah! it is sort of suspended there, sort of wedges itself in place...

[garyS-NJ]

I did just today but it doesn't look to help much to make the fan pull across radiator

 

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