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Discussion Starter · #1 ·
Hello forum .

I dont ride too much at night but recently I noticed the rear cylinder "Y pipe " was dull red .

I've done a search and read some threads but haven't come to a final conclusion.

I've read this is normal ? It cant be ......check engine light is off . Thunder Max diagnostic page is saying everything is OK .
Bike runs good as far as I can tell .

Auto Mapped it anyway but pipe still glows in the dark . I may be sparking a debate here ( again ) but those kind of EGT's can't be good for turbo - can't be good for anything .

Can anyone recommend a base MAP or solution to this issue ?

2013 vrod - trask turbo w/intercooler
 

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Discussion Starter · #3 ·
It'll glow dull at 4000 rpm ( approx . 60 mph ) and appears to get brighter the more throttle I throw at it .

Pretty new to the thundermax but please explain and I'll try to follow along .

Thanks fella
 

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Discussion Starter · #5 · (Edited)
Thanks Ron ,

All you are saying makes sense......well sorta ?
With all the R&D put into HD's first overhead cam motor the issue of glowing exhaust on the rear cylinder only just cant be something the design team could have over looked.

HD paying attention to every possible detail on ALL their bikes ( & charge a premium dollar ) this issue had to come up and a plausible solution or conclusion has had to of been made .

I've read several threads with non turbo vrods involving this same very issue . I'm not saying you're wrong Ron .

Just a hard pill to swallow

Edit : bike works well ....always has
 

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Discussion Starter · #17 ·
My V&H shows little glow too when the bike is ridden like it should( 0ver 5000rpm) for a longer period - not just a quick 1/4 mile run. I take that as a result of a well built engine with a decent power output, not at all as a design fault of factory.
EGT directly relates to exhaust gas velocity, in that as the exhaust temperature rises, the gas moves at a higher velocity. With an internal combustion engine , the EGT will rise as the engine makes more power (or as the air/fuel mixture leans out, but I don´t see Gevarliks situation that way). Some builders even wrap the turbocharger with insulating hood to get the higher EGT to boost the power even more.

On a carbureted V8 engine I used slightly larger air jets (Weber IDA carbs) for warmer mid summer days to lift up the EGT a tad to gain more power. On the dyno session that street driven L88 engine - by the way -heated the Hooker headers up so intensely I was thinking they will melt down and slither to sewer . The headers were over red glow and almost yellow at WOT.
So, glowing headers = Power:cool:
slowly ......im starting to see it that way but I still have some fight left in me ! Great reply
 
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