Thunder Jet

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Feb 4, 2020 | 07:49 AM

#21

natural gasser

Thread Starter

Road Master

Joined: Jul 2008

Posts: 859

Likes: 416

From: In the mountains

Quote:

Originally Posted by Dr.Hess

Lean pop is out the carb.

So your saying the pop out of the exhaust is not a lean condition? Not doubting you, just clarifying.

Feb 4, 2020 | 10:05 AM

#22

Dr.Hess

Seasoned HDF Member

Joined: Aug 2007

Posts: 8,198

Likes: 3,087

From: NW AR

That's correct. Pop out the exhaust is not a lean sign. An exhaust leak will do that. Overly rich, perhaps. Inspect the area of the exhaust from where it exits the head down to the right pipe. Pull all the chrome covers off to inspect. They will crack there. I will refrain from showing my pic of what happens when you miss that.

Feb 4, 2020 | 10:38 AM

#23

98hotrodfatboy

Seasoned HDF Member

Joined: Mar 2010

Posts: 21,092

Likes: 7,618

From: Poolville

Quote:

Originally Posted by Racepres

granted the thunderjet itself can only affect the carburetion at higher RPM
if you are remiss in utilizing it as a System in order to enhance the midrange with the other jets/airbleed
you have wasted time and effort even fooling with the Thunderjet

Don't quite follow what your saying..

Feb 5, 2020 | 07:58 AM

#24

Racepres

Seasoned HDF Member

Joined: Jul 2014

Posts: 8,590

Likes: 3,361

From: Cental, MI

Quote:

Originally Posted by 98hotrodfatboy

Don't quite follow what your saying..

if you follow the original instructions you should come to understand that the thunderjet system is designed to enhance the midrange performance, and the actual thunder jet picks up what was taken away from WOT in order to enhance midrange.
Keep firmly in mind that All Jets are cumulative at WOT and higher RPM
study and learn from this
https://www.zippersperformance.com/w...stallation.pdf

Last edited by Racepres; Feb 5, 2020 at 08:03 AM.